RecNo	LongDec	LatDec	LongDeg	LongMin	LongSec	West	LatDeg	LatMin	LatSec	North	Country	State	County	QuadScale	QuadName	SampSour	RockName	Descrip	Labs	Compiled	DateComp	LocPrec	LocComm	Ref	Ref2
1	-109.208333	41.041667	109	12	30	W	41	2	30	N	US	WY	Sweetwater	24000	Richards Gap	Outcrop or artificial surface exposure	Sandstone	BLACK SANDSTONE UNIT AT BASE OF ROCK SPRINGS FORMATION	USGS Reston	"Marvin, R.F."	74 06	Accurate to within 1 minute (~1 mile)	"SAMPLE FROM RED CREEK IN SEC. 22, T. 12 N., R. 105 W."	"Houston, R.S., and Murphy, J.F., 1965, Age and distribution of sedimentary zircon as a guide to provenance:  U.S. Geological Survey Professional Paper 525D, p. D22-D26"	
2	-110.566667	41.541667	110	34	0	W	41	32	30	N	US	WY	Uinta	24000	Cumberland Gap	Outcrop or artificial surface exposure	Sandstone	BLACK SANDSTONE UNIT IN LOWER PART OF FRONTIER FORMATION	USGS Reston	"Marvin, R.F."	74 06	Accurate to within 1 minute (~1 mile)	"SAMPLE FROM CUMBERLAND GAP IN SEC. 18, T. 18 N., R. 116 W."	"Houston, R.S., and Murphy, J.F., 1965, Age and distribution of sedimentary zircon as a guide to provenance:  U.S. Geological Survey Professional Paper 525D, p. D22-D26"	
3	-109.350000	42.466667	109	21	0	W	42	28	0	N	US	WY	Sublette	24000	Leckie Reservoir	Core or cutting	Adamellite	BASEMENT CORE SAMPLE	USGS Reston	"Marvin, R.F."	74 06	Accurate to within 1 minute (~1 mile)	DRILL CORE FROM 3140-3148 FOOT INTERVAL IN COSDEN NO. 1 STATE WELL	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
4	-106.583333	43.500000	106	35	0	W	43	30	0	N	US	WY	Johnson	24000	Wall Creek	Core or cutting	Quartz diorite	BASEMENT CORE SAMPLE	USGS Reston	"Marvin, R.F."	74 06	Accurate to within 1 minute (~1 mile)	"DRILL CORE FROM 4016-4017.5 FOOT INTERVAL IN TIDEWATER NO. 74-21 WELL IN SEC. 21, T. 41 N., R. 81 W."	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
5	-104.641667	42.383333	104	38	30	W	42	23	0	N	US	WY	Goshen	24000	Hell Gap	Outcrop or artificial surface exposure	Adamellite	FINE- TO COARSE-GRAINED; GNEISSIC; CATACLASIS	USGS Reston	"Marvin, R.F."	74 06	Accurate to within 1 minute (~1 mile)	"HARTVILLE UPLIFT; SEC. 22, T. 28 N., R. 65 W."	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
6	-109.250000	43.833333	109	15	0	W	43	50	0	N	US	WY	Park	Unk	(Not given)	Core or cutting	Quartz monzonite	"QUARTZ MONZONITE DIKE INTRUDES WIGGINS FORMATION, ASSOCIATED WITH PORPHYRY COPPER-TYPE MINERALIZATION"	"Geochron (Krueger of Cambridge, MA)"	"Marvin, R.F."	74 06	Accurate to within 30 minutes (~30 miles)	"CORE FROM DRILL HOLE DH-1, KIRWIN MINING DISTRICT; LOCATION NOT PRECISELY GIVEN"	"Schassberger, H.T., 1972, A K-Ar Age Of a Quartz Monzonite Dike In The Kerwin Mining District, Park County, Wyoming: Isochron/West, No. 4, p. 31."	
7	-110.825000	44.650000	110	49	30	W	44	39	0	N	US	WY	Teton	62500	Madison Junction	Outcrop or artificial surface exposure	Ignimbrite	VITRIC CRYSTAL IGNIMBRITE	"Yale, Brookhaven"	"Marvin, R.F."	74 06	Accurate to within 1 minute (~1 mile)	TUFF CLIFF EXHIBIT IN YELLOWSTONE NATIONAL PARK	"Armstrong, R.L., 1966, K-Ar Dating Using Neutron Activation For Ar Analysis: Granitic Plutons Of The Eastern Great Basin, Nevada and Utah: Geochimica Et Cosmochimica Acta, v. 30, p. 565-600."	
8	-110.580556	43.855556	110	34	50	W	43	51	20	N	US	WY	Teton	24000	Moran	Outcrop or artificial surface exposure	Rhyolitic ash		USGS Denver	"Marvin, R.F."	74 07	Accurate to within 0.1 minute (~500 feet)	"NW1/4 NE1/4 SEC. 19, T45N, R114W, SIGNAL MOUNTAIN"	"Naeser, C.W., Izett, G.A., and Wilcox, R.E., 1973, Zircon Fission-Track Ages Of Pearlette Family Ash Beds In Meade County, Kansas: Geology, v.1, p. 187-189."	
9	-110.633333	44.833333	110	38	0	W	44	50	0	N	US	WY	Park	62500	Mammoth	Outcrop or artificial surface exposure	Rhyolite		USGS Denver	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	"BUFFALO FORK OF TIMOTHY CREEK, YELLOWSTONE NATIONAL PARK"	"Naeser, C.W., Izett, G.A., and Wilcox, R.E., 1973, Zircon Fission-Track Ages Of Pearlette Family Ash Beds In Meade County, Kansas: Geology, v.1, p. 187-189."	
10	-107.450000	44.766667	107	27	0	W	44	46	0	N	US	WY	Sheridan	24000	Skull Ridge	Outcrop or artificial surface exposure	Quartz monzonite		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"8000 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
11	-107.300000	44.700000	107	18	0	W	44	42	0	N	US	WY	Sheridan	24000	Walker Mountain	Outcrop or artificial surface exposure	Quartz monzonite		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"8000 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
12	-107.500000	44.650000	107	30	0	W	44	39	0	N	US	WY	Sheridan	24000	Woodrock	Outcrop or artificial surface exposure	Quartz monzonite		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"9000 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
13	-107.383333	44.783333	107	23	0	W	44	47	0	N	US	WY	Sheridan	24000	Skull Ridge	Outcrop or artificial surface exposure	Quartz diorite		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"8000 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
14	-107.300000	44.733333	107	18	0	W	44	44	0	N	US	WY	Sheridan	24000	Walker Mountain	Outcrop or artificial surface exposure	Quartz diorite		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"7600 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
15	-107.250000	44.633333	107	15	0	W	44	38	0	N	US	WY	Sheridan	24000	Beckton	Outcrop or artificial surface exposure	Quartz diorite		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"7800 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
16	-107.300000	44.616667	107	18	0	W	44	37	0	N	US	WY	Sheridan	24000	Dome Lake	Outcrop or artificial surface exposure	Quartz diorite		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"8500 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
17	-107.200000	44.566667	107	12	0	W	44	34	0	N	US	WY	Sheridan	24000	Park Reservoir	Outcrop or artificial surface exposure	Quartz diorite		Yale	"Marvin, R.F."	74 06	Accurate to within 1 minute (~1 mile)	"8200 FOOT  ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
18	-107.450000	44.566667	107	27	0	W	44	34	0	N	US	WY	Big Horn	24000	Shell Reservoir	Outcrop or artificial surface exposure	Quartz diorite		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"8700 FOOT  ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
19	-107.433333	44.483333	107	26	0	W	44	29	0	N	US	WY	Big Horn	24000	Spanish Point	Outcrop or artificial surface exposure	Quartz diorite		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"9500 FOOT   ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
20	-107.350000	44.433333	107	21	0	W	44	26	0	N	US	WY	Big Horn	24000	Shell Lake	Outcrop or artificial surface exposure	Quartz diorite		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"9600 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
21	-107.550000	44.766667	107	33	0	W	44	46	0	N	US	WY	Sheridan	24000	Burguss Junction	Outcrop or artificial surface exposure	Quartz monzonite		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"8200 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
22	-107.450000	44.800000	107	27	0	W	44	48	0	N	US	WY	Sheridan	24000	Skull Ridge	Outcrop or artificial surface exposure	Quartz monzonite		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"8300 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
23	-107.400000	44.633333	107	24	0	W	44	38	0	N	US	WY	Sheridan	24000	Woodrock	Outcrop or artificial surface exposure	Quartz diorite		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"9200 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
24	-107.116667	44.500000	107	7	0	W	44	30	0	N	US	WY	Johnson	24000	Little Goose Peak	Outcrop or artificial surface exposure	Quartz diorite		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"10,200 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
25	-107.250000	44.500000	107	15	0	W	44	30	0	N	US	WY	Johnson	24000	Park Reservoir	Outcrop or artificial surface exposure	Quartz diorite		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"9000 FOOT  ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
26	-107.133333	44.450000	107	8	0	W	44	27	0	N	US	WY	Johnson	24000	Cloud Peak	Outcrop or artificial surface exposure	Quartz diorite		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"9200 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
27	-106.983333	44.450000	106	59	0	W	44	27	0	N	US	WY	Johnson	24000	Stone Mountain	Outcrop or artificial surface exposure	Gneiss		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"8500 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
28	-106.983333	44.366667	106	59	0	W	44	22	0	N	US	WY	Johnson	24000	Hunter Mesa	Outcrop or artificial surface exposure	Gneiss		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"8100 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
29	-106.900000	44.366667	106	54	0	W	44	22	0	N	US	WY	Johnson	24000	Hunter Mesa	Outcrop or artificial surface exposure	Gneiss		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"7000 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
30	-107.150000	44.350000	107	9	0	W	44	21	0	N	US	WY	Johnson	24000	Lake Helen	Outcrop or artificial surface exposure	Gneiss		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"10,800 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
31	-107.066667	44.283333	107	4	0	W	44	17	0	N	US	WY	Johnson	24000	Lake Angeline	Outcrop or artificial surface exposure	Gneiss		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"10,200 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
32	-107.233333	44.283333	107	14	0	W	44	17	0	N	US	WY	Big Horn	24000	Lake Helen	Outcrop or artificial surface exposure	Gneiss		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"10,200 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
33	-107.000000	44.266667	107	0	0	W	44	16	0	N	US	WY	Johnson	24000	Lake Angeline	Outcrop or artificial surface exposure	Gneiss		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"8500 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
34	-107.216667	44.216667	107	13	0	W	44	13	0	N	US	WY	Big Horn	24000	Meadowlark Lake	Outcrop or artificial surface exposure	Gneiss		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"8800 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
35	-107.083333	44.133333	107	5	0	W	44	8	0	N	US	WY	Johnson	24000	Powder River Pass	Outcrop or artificial surface exposure	Gneiss		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"9200 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
36	-106.966667	44.116667	106	58	0	W	44	7	0	N	US	WY	Johnson	24000	Hazelton	Outcrop or artificial surface exposure	Gneiss		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"8100 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
37	-106.950000	44.066667	106	57	0	W	44	4	0	N	US	WY	Johnson	24000	Hazelton	Outcrop or artificial surface exposure	Gneiss		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"7900 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
38	-106.950000	44.016667	106	57	0	W	44	1	0	N	US	WY	Johnson	24000	Hazelton	Outcrop or artificial surface exposure	Gneiss		Yale	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"8000 FOOT ELEVATION, BIGHORN MOUNTAINS"	"Heimlich, R.A., and Armstrong, R.L., 1972, Variance Of Precambrian K-Ar Biotite Dates, Bighorn Mountains, Wyoming: Earth and Planetary Science Letters, v. 14, p. 75-78."	
39	-104.451389	44.479167	104	27	5	W	44	28	45	N	US	WY	Crook	62500	Sundance	Outcrop or artificial surface exposure	Porphyritic syenite	"PHENOCRYSTS OF ORTHOCLASE, HORNBLENDE, AEGIRINE-AUGITE, BIOTITE (RARE); GROUNDMASS OF ORTHOCLASE AND SERICITE"	Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 0.1 minute (~500 feet)	"JUST SOUTH OF OBSERVATION TOWER NEAR END OF PAVED ROAD; NW1/4,SE1/4, SEC. 20, T52N, R63W, BEAR LODGE MTNS., BEAR LODGE PLUTON"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
40	-104.436111	44.458333	104	26	10	W	44	27	30	N	US	WY	Crook	62500	Sundance	Outcrop or artificial surface exposure	Porphyritic syenite	"PHENOCRYSTS OF PLAGIOCLASE, HORNBLENDE, AND AUGITE; GROUNDMASS OF FELDSPAR, SERCITE, BIOTITE AND MAGNETITE"	Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"SW1/4,SW1/4,SEC. 28, T52N, R63W, BEAR LODGE MTNS, BEAR LODGE PLUTON"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
41	-104.263889	44.298611	104	15	50	W	44	17	55	N	US	WY	Crook	62500	Sundance	Outcrop or artificial surface exposure	Porphyritic monzonite	"PHENOCRYSTS OF ORTHOCLASE,  PLAGIOCLASE, AUGITE IN GROUNDMASS OF ORTHOCLASE AND AUGITE"	Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"HEAD OF FISH CANYON; SE1/4,SW1/4,SEC.23, T50N, R62W, BLACK BUTTES STOCK"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
42	-104.765000	44.625000	104	45	54	W	44	37	30	N	US	WY	Crook	62500	Devils Tower	Outcrop or artificial surface exposure	Porphyritic phonolite	"PHENOCRYSTS OF ORTHOCLASE, NEPHELINE, AND AEGIRINE IN A GROUNDMASS OF SERICITE"	Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 0.1 minute (~500 feet)	"NW SIDE OF MISSOURI BUTTES, MISSOURI BUTTES PLUTON"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
43	-108.941667	41.793056	108	56	30	W	41	47	35	N	US	WY	Sweetwater	62500	Superior	Outcrop or artificial surface exposure	Porphyritic orendite	"PHLOGOPITE PHENOCRYSTS IN GROUNDMASS OF LEUCITE, DIOPSIDE, SANIDINE"	Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"NW1/4,SE1/4, SEC. 15, T21N, R102W, ZIRKEL MESA, LEUCITE HILLS PLUTON"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
44	-108.816667	42.554167	108	49	0	W	42	33	15	N	US	WY	Fremont	24000	Louis Lake	Outcrop or artificial surface exposure	Mafic dike	DIKE COMPOSITION IS ANDESINE AND PYROXENE.	Socony Mobil	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"NEAR LOUIS LAKE ROAD, WIND RIVER RANGE"	"Spall, H., 1971, Paleomagnetism and K-Ar Age Of Mafic Dikes From The Wind River Range, Wyoming: Geological Society of America Bulletin, v. 82, p. 2457-2472."	
44	-108.812500	42.550000	108	48	45	W	42	33	0	N	US	WY	Fremont	24000	Louis Lake	Outcrop or artificial surface exposure	Mafic dike	DIKE COMPOSITION IS ANDESINE AND PYROXENE.	Socony Mobil	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"NEAR LOUIS LAKE ROAD, WIND RIVER RANGE"	"Spall, H., 1971, Paleomagnetism and K-Ar Age Of Mafic Dikes From The Wind River Range, Wyoming: Geological Society of America Bulletin, v. 82, p. 2457-2472."	
46	-108.820833	42.575000	108	49	15	W	42	34	30	N	US	WY	Fremont	24000	Louis Lake	Outcrop or artificial surface exposure	Mafic dike	DIKE IS COMPOSED OF ANDESINE AND PYROXENE	Socony Mobil	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"NEAR LOUIS LAKE ROAD, WIND RIVER RANGE"	"Spall, H., 1971, Paleomagnetism and K-Ar Age Of Mafic Dikes From The Wind River Range, Wyoming: Geological Society of America Bulletin, v. 82, p. 2457-2472."	
47	-109.950000	43.729167	109	57	0	W	43	43	45	N	US	WY	Fremont	24000	Kisinger Lakes	Outcrop or artificial surface exposure	Andesite	BOULDER WITHIN THE VOLCANIC MUDFLOW CONGLOMERATE IN THE WIGGINS FORMATION	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"SW1/4, SEC.33, T44N, R109W, PINNACLE BUTTES,"	"Rohrer, W.L., and Obradovich, J.D., 1969, Age and Stratigraphic Relations Of The Tepee Trail and Wiggins Formation, Northwestern Wyoming: U.S. Geological Survey Professional Paper 650B, p. B57-B62."	
48	-109.950000	43.729167	109	57	0	W	43	43	45	N	US	WY	Fremont	24000	Kisinger Lakes	Outcrop or artificial surface exposure	Andesite	LAVA FLOW OR SILL AT THE BASE OF THE WIGGINS FORMATION	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"SW1/4, SEC. 33, T44N, R109W, PINNACLE BUTTES"	"Rohrer, W.L., and Obradovich, J.D., 1969, Age and Stratigraphic Relations Of The Tepee Trail and Wiggins Formation, Northwestern Wyoming: U.S. Geological Survey Professional Paper 650B, p. B57-B62."	
49	-99.920000	44.132778	99	55	12	W	44	7	58	N	US	SD	Lyman	24000	Joe Creek NW	Outcrop or artificial surface exposure	Bentonite	6-CM BENTONITE BED IN THE 'DIDYMOCERAS NEBRASCENSE' ZONE IS 16.5 METERS BELOW THE TOP OF THE DEGREY MEMBER OF THE PIERRE SHALE	USGS Denver	"Marvin, R.F."	77 04	Accurate to within 1 minute (~1 mile)	"NW1/4 SEC.26, T108N, R76W"	"Obradovich, J.D., and Cobban, W.A., 1975, A Time-Scale For The Late Cretaceous Of The Western Interior Of North America 'In' Caldwell, W.G.E., ed., The Cretaceous System In The Western Interior Of North America, Geological Association of Canada, Special Paper No. 13, p. 31-54"	"'In' Caldwell, W.G.E., ed., The Cretaceous System In The Western Interior Of North America, Geological Association of Canada, Special Paper No. 13, p. 31-54"
50	-109.591667	44.991667	109	35	30	W	44	59	30	N	US	WY	Park	62500	Beartooth Butte	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
51	-109.508333	44.941667	109	30	30	W	44	56	30	N	US	WY	Park	62500	Beartooth Butte	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
52	-109.483333	44.950000	109	29	0	W	44	57	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
53	-109.433333	44.966667	109	26	0	W	44	58	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
54	-109.491667	44.950000	109	29	30	W	44	57	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
55	-109.641667	44.933333	109	38	30	W	44	56	0	N	US	WY	Park	62500	Beartooth Butte	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
56	-106.983333	44.083333	106	59	0	W	44	5	0	N	US	WY	Johnson	24000	Hazelton	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	BIGHORN RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
57	-106.950000	44.283333	106	57	0	W	44	17	0	N	US	WY	Johnson	24000	Hunter Mesa	Outcrop or artificial surface exposure	Tholeiitic diabase		University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	BIGHORN RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
58	-107.383333	44.766667	107	23	0	W	44	46	0	N	US	WY	Sheridan	24000	Skull Ridge	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	BIGHORN RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
59	-107.783333	44.800000	107	47	0	W	44	48	0	N	US	WY	Sheridan	24000	Bald Mountain	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	BIGHORN RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
60	-107.866667	44.800000	107	52	0	W	44	48	0	N	US	WY	Big Horn	24000	Bald Mountain	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	BIGHORN RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
61	-107.483333	44.700000	107	29	0	W	44	42	0	N	US	WY	Sheridan	24000	Skull Ridge	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	BIGHORN RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
62	-106.933333	44.300000	106	56	0	W	44	18	0	N	US	WY	Johnson	24000	Hunter Mesa	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	BIGHORN RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
63	-106.950000	44.233333	106	57	0	W	44	14	0	N	US	WY	Johnson	24000	Caribou Creek	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	BIGHORN RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
64	-108.825000	43.618056	108	49	30	W	43	37	5	N	US	WY	Hot Springs	24000	Bargee	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	WESTERN OWL CREEK MOUNTAINS	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
65	-108.825000	43.616667	108	49	30	W	43	37	0	N	US	WY	Hot Springs	24000	Bargee	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	WESTERN OWL CREEK MOUNTAINS	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
66	-108.830556	43.620833	108	49	50	W	43	37	15	N	US	WY	Hot Springs	24000	Bargee	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	WESTERN OWL CREEK MOUNTAINS	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
67	-108.830556	43.627778	108	49	50	W	43	37	40	N	US	WY	Hot Springs	24000	Anchor Reservoir	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	WESTERN OWL CREEK MOUNTAINS	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
68	-108.825000	43.605556	108	49	30	W	43	36	20	N	US	WY	Hot Springs	24000	Bargee	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	WESTERN OWL CREEK MOUNTAINS	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
69	-108.650000	42.466667	108	39	0	W	42	28	0	N	US	WY	Fremont	24000	Atlantic City	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	SOUTHERN WIND RIVER RANGE.  SAMPLE TAKEN FROM SAME DIKE AS SAMPLE DESCRIBED IN RECORD NUMBER 0000070.	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
70	-108.650000	42.466667	108	39	0	W	42	28	0	N	US	WY	Fremont	24000	Atlantic City	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	SOUTHERN WIND RIVER RANGE.  SAMPLE TAKEN FROM SAME DIKE AS SAMPLE DESCRIBED IN RECORD NUMBER 0000069.	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
71	-108.791667	42.520833	108	47	30	W	42	31	15	N	US	WY	Fremont	24000	Louis Lake	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE IS EXTENSIVELY CHLORIZITED.  SAMPLE TAKEN FROM CHILLED CONTACT ZONE.	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	SOUTHERN WIND RIVER RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
72	-108.812500	42.550000	108	48	45	W	42	33	0	N	US	WY	Fremont	24000	Louis Lake	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE.	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN WIND RIVER RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
73	-108.816667	42.554167	108	49	0	W	42	33	15	N	US	WY	Fremont	24000	Louis Lake	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE.	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN WIND RIVER RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
74	-108.820833	42.575000	108	49	15	W	42	34	30	N	US	WY	Fremont	24000	Louis Lake	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN  FROM CHILLED CONTACT ZONE AND IS MODERATELY CHLORITIZED.	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN WIND RIVER RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
75	-108.966667	42.416667	108	58	0	W	42	25	0	N	US	WY	Fremont	24000	Anderson Ridge	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	SOUTHERN WIND RIVER RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
76	-108.508333	42.425000	108	30	30	W	42	25	30	N	US	WY	Fremont	24000	Radium Springs	Outcrop or artificial surface exposure	Tholeiitic diabase	SAMPLE TAKEN FROM CHILLED CONTACT ZONE.	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	SOUTHERN WIND RIVER RANGE	"Condie, K.C., Leech, A.P., and Baadsgaard, H., 1969, Potassium-Argon Ages Of Precambrian Mafic Dikes In Wyoming: Geological Society of America Bulletin, v. 80, p. 899-905."	
77	-108.843333	42.592500	108	50	36	W	42	35	33	N	US	WY	Fremont	24000	Louis Lake	Float	Granodiorite	"SLIGHT SERICITIZATION OF PLAGIOCLASE AND MICROCLINE, LOUIS LAKE BATHOLITH"	California Institute of Technology	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"A TALUS BLOCK ABOUT 30 M FROM SHORE OF LAKE ALONG ACCESS ROAD AT LOUIS LAKE CAMPGROUND, WIND RIVER MOUNTAINS"	"Naylor, R.S., Steiger, R.H., and Wasserburg, G.J., 1970, U-Th-Pb and Rb-Sr Systematics In 2700-Million-Year-Old Plutons From The Southern Wind River Range, Wyoming: Geochimica Et Cosmochimica Acta, v. 34, p. 1133-1159."	
78	-108.854167	42.605000	108	51	15	W	42	36	18	N	US	WY	Fremont	24000	Louis Lake	Outcrop or artificial surface exposure	Granodiorite	"SLIGHT SERICITIZATION OF PLAGIOCLASE AND MICROCLINE, LOUIS LAKE BATHOLITH"	California Institute of Technology	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"ALONG LOUIS LAKE ROAD 800 M NORTH OF LOUIS LAKE, WIND RIVER MOUNTAINS"	"Naylor, R.S., Steiger, R.H., and Wasserburg, G.J., 1970, U-Th-Pb and Rb-Sr Systematics In 2700-Million-Year-Old Plutons From The Southern Wind River Range, Wyoming: Geochimica Et Cosmochimica Acta, v. 34, p. 1133-1159."	
79	-108.875833	42.670833	108	52	33	W	42	40	15	N	US	WY	Fremont	24000	Cony Mountain	Outcrop or artificial surface exposure	Aplite	SOME PATCHES OF INTENSE PLAGIOCLASE SERICITIZATION.  LOUIS LAKE GRANODIORITE PLUTON.	California Institute of Technology	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"LOUIS LAKE ROAD, SOUTHERN WIND RIVER MOUNTAINS"	"Naylor, R.S., Steiger, R.H., and Wasserburg, G.J., 1970, U-Th-Pb and Rb-Sr Systematics In 2700-Million-Year-Old Plutons From The Southern Wind River Range, Wyoming: Geochimica Et Cosmochimica Acta, v. 34, p. 1133-1159."	
80	-108.854167	42.728333	108	51	15	W	42	43	42	N	US	WY	Fremont	24000	Fossil Hill	Outcrop or artificial surface exposure	Granodiorite	HALF OF THE MICROCLINE AND PLAGIOCLASE GRAINS ARE MODERATELY SERICITIZED.  LOUIS LAKE GRANODIORITE PLUTON.	California Institute of Technology	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"LOUIS LAKE ROAD AT LOWEST SWITCHBACK, SOUTHERN WIND RIVER MOUNTAINS"	"Naylor, R.S., Steiger, R.H., and Wasserburg, G.J., 1970, U-Th-Pb and Rb-Sr Systematics In 2700-Million-Year-Old Plutons From The Southern Wind River Range, Wyoming: Geochimica Et Cosmochimica Acta, v. 34, p. 1133-1159."	
81	-108.948333	42.440000	108	56	54	W	42	26	24	N	US	WY	Fremont	24000	Anderson Ridge	Outcrop or artificial surface exposure	Pegmatite		California Institute of Technology	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN WIND RIVER MOUNTAINS	"Naylor, R.S., Steiger, R.H., and Wasserburg, G.J., 1970, U-Th-Pb and Rb-Sr Systematics In 2700-Million-Year-Old Plutons From The Southern Wind River Range, Wyoming: Geochimica Et Cosmochimica Acta, v. 34, p. 1133-1159."	
82	-108.979167	42.437500	108	58	45	W	42	26	15	N	US	WY	Fremont	24000	Anderson Ridge	Outcrop or artificial surface exposure	Quartz monzonite		California Institute of Technology	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN   WIND RIVER MOUNTAINS	"Naylor, R.S., Steiger, R.H., and Wasserburg, G.J., 1970, U-Th-Pb and Rb-Sr Systematics In 2700-Million-Year-Old Plutons From The Southern Wind River Range, Wyoming: Geochimica Et Cosmochimica Acta, v. 34, p. 1133-1159."	
83	-109.085000	42.900833	109	5	6	W	42	54	3	N	US	WY	Fremont	62500	Moccasin Lake	Outcrop or artificial surface exposure	Quartz monzonite	MODERATE SERICITIZATION OF PLAGIOCLASE AND MICROCLINE	California Institute of Technology	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"ON SOUTH SIDE OF ACCESS ROAD TO MOCCASIN LAKE ABOUT 1.5 KM EAST OF LAKE, BEARS EAR PLUTON, WIND RIVER MOUNTAINS"	"Naylor, R.S., Steiger, R.H., and Wasserburg, G.J., 1970, U-Th-Pb and Rb-Sr Systematics In 2700-Million-Year-Old Plutons From The Southern Wind River Range, Wyoming: Geochimica Et Cosmochimica Acta, v. 34, p. 1133-1159."	
84	-108.854167	42.728333	108	51	15	W	42	43	42	N	US	WY	Fremont	24000	Fossil Hill	Outcrop or artificial surface exposure	Aplite	SOME SERICITIZATION.  LOUIS LAKE GRANODIORITE PLUTON.	California Institute of Technology	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"LOUIS LAKE ROAD  AT LOWEST SWITCHBACK, SOUTHERN WIND RIVER MOUNTAINS."	"Naylor, R.S., Steiger, R.H., and Wasserburg, G.J., 1970, U-Th-Pb and Rb-Sr Systematics In 2700-Million-Year-Old Plutons From The Southern Wind River Range, Wyoming: Geochimica Et Cosmochimica Acta, v. 34, p. 1133-1159."	
85	-108.854167	42.728333	108	51	15	W	42	43	42	N	US	WY	Fremont	24000	Fossil Hill	Outcrop or artificial surface exposure	Aplite	SOME SERICITIZATION.  LOUIS LAKE GRANODIORITE PLUTON.	California Institute of Technology	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"LOUIS LAKE ROAD AT  LOWEST SWITCHBACK, SOUTHERN WIND RIVER MOUNTAINS."	"Naylor, R.S., Steiger, R.H., and Wasserburg, G.J., 1970, U-Th-Pb and Rb-Sr Systematics In 2700-Million-Year-Old Plutons From The Southern Wind River Range, Wyoming: Geochimica Et Cosmochimica Acta, v. 34, p. 1133-1159."	
86	-108.979167	42.437500	108	58	45	W	42	26	15	N	US	WY	Fremont	24000	Anderson Ridge	Outcrop or artificial surface exposure	Quartz monzonite		California Institute of Technology	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN WIND RIVER MOUNTAINS	"Naylor, R.S., Steiger, R.H., and Wasserburg, G.J., 1970, U-Th-Pb and Rb-Sr Systematics In 2700-Million-Year-Old Plutons From The Southern Wind River Range, Wyoming: Geochimica Et Cosmochimica Acta, v. 34, p. 1133-1159."	
87	-108.979167	42.437500	108	58	45	W	42	26	15	N	US	WY	Fremont	24000	Anderson Ridge	Outcrop or artificial surface exposure	Quartz monzonite		California Institute of Technology	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN WIND RIVER MOUNTAINS	"Naylor, R.S., Steiger, R.H., and Wasserburg, G.J., 1970, U-Th-Pb and Rb-Sr Systematics In 2700-Million-Year-Old Plutons From The Southern Wind River Range, Wyoming: Geochimica Et Cosmochimica Acta, v. 34, p. 1133-1159."	
88	-108.875833	42.670833	108	52	33	W	42	40	15	N	US	WY	Fremont	24000	Cony Mountain	Outcrop or artificial surface exposure	Aplite	SOME PATCHES OF INTENSE PLAGIOCLASE SERICITIZATION.  LOUIS LAKE GRANODIORITE PLUTON.	California Institute of Technology	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"LOUIS LAKE ROAD,  SOUTHERN WIND RIVER MOUNTAINS"	"Naylor, R.S., Steiger, R.H., and Wasserburg, G.J., 1970, U-Th-Pb and Rb-Sr Systematics In 2700-Million-Year-Old Plutons From The Southern Wind River Range, Wyoming: Geochimica Et Cosmochimica Acta, v. 34, p. 1133-1159."	
89	-108.854167	42.605000	108	51	15	W	42	36	18	N	US	WY	Fremont	24000	Louis Lake	Outcrop or artificial surface exposure	Granodiorite	SLIGHT SERICITIZATION OF   PLAGIOCLASE AND MICROCLINE.  LOUIS LAKE BATHOLITH.	California Institute of Technology	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"ALONG LOUIS LAKE ROAD, 800 M NORTH OF LOUIS LAKE, SOUTHERN WIND RIVER MOUNTAINS."	"Naylor, R.S., Steiger, R.H., and Wasserburg, G.J., 1970, U-Th-Pb and Rb-Sr Systematics In 2700-Million-Year-Old Plutons From The Southern Wind River Range, Wyoming: Geochimica Et Cosmochimica Acta, v. 34, p. 1133-1159."	
90	-109.433333	44.966667	109	26	0	W	44	58	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Quartz dolerite	"DIKE CONTAINING PLAGIOCLASE (AN 53-57), CLINOPYROXENE, OPAQUE MINERALS, HORNBLENDE, QUARTZ, ORTHOPYROXENE"	University of Minnesota	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	WEST OF CHRISTMAS LAKE IN BEARTOOTH MOUNTAINS	"Hanson, G.N., and Gast, P.W., 1967, Kinetic Studies In Contact Metamorphism Zones: Geochimica Et Cosmochimica Acta, v. 31, p. 1119-1153."	
91	-109.433333	44.966667	109	26	0	W	44	58	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Amphibolite	"WELL-FOLIATED, PARA-AMPHIBOLITE CONTAINING PLAGIOCLASE (AN23-28), HORNBLENDE, QUARTZ, BIOTITE-CHLORITE, EPIDOTE, SPHENE, RARE MICROCLINE"	University of Minnesota	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	WEST OF CHRISTMAS LAKE IN BEARTOOTH MOUNTAINS.  COUNTRY ROCK SAMPLE WAS COLLECTED 0.2M FROM NORTH CONTACT OF CHRISTMAS LAKE DIKE.	"Hanson, G.N., and Gast, P.W., 1967, Kinetic Studies In Contact Metamorphism Zones: Geochimica Et Cosmochimica Acta, v. 31, p. 1119-1153."	
92	-109.433333	44.966667	109	26	0	W	44	58	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Amphibolite	"WELL-FOLIATED, PARA-AMPHIBOLITE CONTAINING PLAGIOCLASE (AN23-28) HORNBLENDE, QUARTZ, BIOTITE-CHLORITE, EPIDOTE, SPHENE, RARE MICROCLINE."	University of Minnesota	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	WEST OF CHRISTMAS LAKE IN BEARTOOTH MOUNTAINS.  COUNTRY ROCK SAMPLE WAS COLLECTED 0.6M FROM NORTH CONTACT OF CHRISTMAS LAKE DIKE.	"Hanson, G.N., and Gast, P.W., 1967, Kinetic Studies In Contact Metamorphism Zones: Geochimica Et Cosmochimica Acta, v. 31, p. 1119-1153."	
93	-109.433333	44.966667	109	26	0	W	44	58	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Amphibolite	"WELL-FOLIATED, PARA-AMPHIBOLITE CONTAINING     PLAGIOCLASE (AN23-28), HORNBLENDE, QUARTZ, BIOTITE-CHLORITE, EPIDOTE, SPHENE, RARE MICROCLINE"	University of Minnesota	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	WEST OF CHRISTMAS LAKE IN BEARTOOTH MOUNTAINS.  COUNTRY ROCK SAMPLE WAS COLLECTED 2.1M FROM NORTH CONTACT OF CHRISTMAS LAKE DIKE.	"Hanson, G.N., and Gast, P.W., 1967, Kinetic Studies In Contact Metamorphism Zones: Geochimica Et Cosmochimica Acta, v. 31, p. 1119-1153."	
94	-109.433333	44.966667	109	26	0	W	44	58	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Amphibolite	"WELL-FOLIATED, PARA-AMPHIBOLITE CONTAINING PLAGIOCLASE  (AN23-28), HORNBLENDE, QUARTZ, BIOTITE-CHLORITE, EPIDOTE, SPHENE, RARE MICROCLINE"	University of Minnesota	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	WEST OF CHRISTMAS LAKE IN BEARTOOTH MOUNTAINS.  COUNTRY ROCK SAMPLE COLLECTED 3.4 M FROM NORTH CONTACT OF CHRISTMAS LAKE DIKE.	"Hanson, G.N., and Gast, P.W., 1967, Kinetic Studies In Contact Metamorphism Zones: Geochimica Et Cosmochimica Acta, v. 31, p. 1119-1153."	
95	-109.433333	44.966667	109	26	0	W	44	58	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Amphibolite	"WELL-FOLIATED, PARA-AMPHIBOLITE CONTAINING PLAGIOCLASE (AN23-28) , HORNBLENDE, QUARTZ, BIOTITE-CHLORITE, EPIDOTE, SPHENE, RARE MICROCLINE"	University of Minnesota	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	WEST OF CHRISTMAS LAKE IN BEARTOOTH MOUNTAINS.  COUNTRY ROCK SAMPLE COLLECTED 4.1M FROM NORTH CONTACT OF CHRISTMAS LAKE DIKE.	"Hanson, G.N., and Gast, P.W., 1967, Kinetic Studies In Contact Metamorphism Zones: Geochimica Et Cosmochimica Acta, v. 31, p. 1119-1153."	
96	-109.433333	44.966667	109	26	0	W	44	58	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Amphibolite	"WELL-FOLIATED, PARA-AMPHIBOLITE CONTAINING PLAGIOCLASE  (AN23-28), HORNBLENDE, QUARTZ, BIOTITE-CHLORITE, EPIDOTE, SPHENE, RARE MICROCLINE"	University of Minnesota	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	WEST OF CHRISTMAS LAKE IN BEARTOOTH MOUNTAINS.  COUNTRY ROCK SAMPLE COLLECTED 5.3 M FROM NORTH CONTACT OF CHRISTMAS LAKE DIKE.	"Hanson, G.N., and Gast, P.W., 1967, Kinetic Studies In Contact Metamorphism Zones: Geochimica Et Cosmochimica Acta, v. 31, p. 1119-1153."	
97	-109.433333	44.966667	109	26	0	W	44	58	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Amphibolite	"WELL-FOLIATED, PARA-AMPHIBOLITE CONTAINING PLAGIOCLASE (AN 23-28), HORNBLENDE, QUARTZ, BIOTITE-CHLORITE, EPIDOTE, SPHENE, RARE MICROCLINE"	University of Minnesota	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	WEST OF CHRISTMAS LAKE IN BEARTOOTH MOUNTAINS.  COUNTRY ROCK SAMPLE COLLECTED 7M FROM NORTH CONTACT OF CHRISTMAS LAKE DIKE.	"Hanson, G.N., and Gast, P.W., 1967, Kinetic Studies In Contact Metamorphism Zones: Geochimica Et Cosmochimica Acta, v. 31, p. 1119-1153."	
98	-109.433333	44.966667	109	26	0	W	44	58	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Amphibolite	"WELL-FOLIATED, PARA-AMPHIBOLITE CONTAINING PLAGIOCLASE (AN 23-28), HORNBLENDE, QUARTZ, BIOTITE-CHLORITE, EPIDOTE, SPHENE, RARE MICROCLINE"	University of Minnesota	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	WEST OF CHRISTMAS LAKE IN BEARTOOTH MOUNTAINS.  COUNTRY ROCK SAMPLE COLLECTED 10.2M FROM NORTH CONTACT OF CHRISTMAS LAKE DIKE.	"Hanson, G.N., and Gast, P.W., 1967, Kinetic Studies In Contact Metamorphism Zones: Geochimica Et Cosmochimica Acta, v. 31, p. 1119-1153."	
99	-109.433333	44.966667	109	26	0	W	44	58	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Amphibolite	"WELL-FOLIATED, PARA-AMPHIBOLITE CONTAINING PLAGIOCLASE (AN 23-28), HORNBLENDE, QUARTZ, BIOTITE-CHLORITE, EPIDOTE, SPHENE, RARE MICROCLINE"	University of Minnesota	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	WEST OF CHRISTMAS LAKE IN BEARTOOTH MOUNTAINS.  COUNTRY ROCK SAMPLE COLLECTED 19M FROM NORTH CONTACT OF CHRISTMAS LAKE DIKE.	"Hanson, G.N., and Gast, P.W., 1967, Kinetic Studies In Contact Metamorphism Zones: Geochimica Et Cosmochimica Acta, v. 31, p. 1119-1153."	
100	-107.383333	43.304167	107	23	0	W	43	18	15	N	US	WY	Natrona	24000	Badwater	Outcrop or artificial surface exposure	Siltstone	TUFFACEOUS SILTSTONE DIRECTLY ABOVE THE CHANNELED CONTACT WITH THE GREEN AND BROWN MEMBER IN THE HENDRY RANCH MEMBER	"Geochron (Krueger of Cambridge, MA)"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"SE1/4, SEC. 34, T39N, R88W"	"Riedel, D.W., 1969, Geology Of The Tepee Trail Formation, Badwater Area, Fremont and Natrona Counties, Wyoming: Symposium On Tertiary Rocks Of Wyoming, Wyoming Geologic Association Guidebook, 21st field conference, p. 39-41."	
101	-107.400000	43.325000	107	24	0	W	43	19	30	N	US	WY	Natrona	24000	Badwater	Outcrop or artificial surface exposure	Vitric tuff	100 FT ABOVE GRADATIONAL CONTACT IN HENDRY RANCH MEMBER	"Geochron (Krueger of Cambridge, MA)"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"NE1/4, SEC. 28, T39N, R88W"	"Riedel, D.W., 1969, Geology Of The Tepee Trail Formation, Badwater Area, Fremont and Natrona Counties, Wyoming: Symposium On Tertiary Rocks Of Wyoming, Wyoming Geologic Association Guidebook, 21st field conference, p. 39-41."	
102	-107.458333	43.341667	107	27	30	W	43	20	30	N	US	WY	Natrona	24000	Badwater	Outcrop or artificial surface exposure	Vitric tuff		"Geochron (Krueger of Cambridge, MA)"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"NE 1/4, SEC. 24, T39N, R89W"	"Riedel, D.W., 1969, Geology Of The Tepee Trail Formation, Badwater Area, Fremont and Natrona Counties, Wyoming: Symposium On Tertiary Rocks Of Wyoming, Wyoming Geologic Association Guidebook, 21st field conference, p. 39-41."	
103	-107.383333	43.304167	107	23	0	W	43	18	15	N	US	WY	Natrona	24000	Badwater	Outcrop or artificial surface exposure	Tuff	TEPEE TRAIL FORMATION	"Geochron (Krueger of Cambridge, MA)"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"SEC. 34, T39N, R88W, BADWATER CREEK AREA"	"Black, C.C., 1969, Fossil Vertebrates From The Late Eocene and Oligocene, Badwater Creek Area, Wyoming, and Some Regional Correlations: Symposium On Tertiary Rocks Of Wyoming, 21st Field Conference, 1969 Wyoming Geological Association Guidebook, p. 43-47."	"Symposium On Tertiary Rocks Of Wyoming, 21st Field Conference, 1969 Wyoming Geological Association Guidebook, p. 43-47."
104	-107.458333	43.341667	107	27	30	W	43	20	30	N	US	WY	Natrona	24000	Badwater	Outcrop or artificial surface exposure	Vitric tuff		"Geochron (Krueger of Cambridge, MA)"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"SEC. 24, T39N, R89W, BADWATER CREEK AREA"	"Black, C.C., 1969, Fossil Vertebrates From The Late Eocene and Oligocene, Badwater Creek Area, Wyoming, and Some Regional Correlations: Symposium On Tertiary Rocks Of Wyoming, 21st Field Conference, 1969 Wyoming Geological Association Guidebook, p. 43-47."	"Symposium On Tertiary Rocks Of Wyoming, 21st Field Conference, 1969 Wyoming Geological Association Guidebook, p. 43-47."
105	-107.233333	44.350000	107	14	0	W	44	21	0	N	US	WY	Big Horn	24000	Lake Helen	Outcrop or artificial surface exposure	Gneiss	"QUARTZOFELDSPATHIC - - QUARTZ, PLAGIOCLASE, BIOTITE, MICROCLINE AT TIMES"	Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIGHORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
106	-106.950000	44.150000	106	57	0	W	44	9	0	N	US	WY	Johnson	24000	Caribou Creek	Outcrop or artificial surface exposure	Gneiss	"QUARTZOFELDSPATHIC--QUARTZ, PLAGIOCLASE, BIOTITE, AND SOMETIMES MICROCLINE."	Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIGHORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
107	-107.050000	44.183333	107	3	0	W	44	11	0	N	US	WY	Johnson	24000	Powder River Pass	Outcrop or artificial surface exposure	Gneiss	"QUARTZOFELDSPATHIC--Q0ARTZ, PLAGIOCLASE, BIOTITE, AND SOMETIMES MICROCLINE."	Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIGHORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
108	-106.950000	44.508333	106	57	0	W	44	30	30	N	US	WY	Sheridan	24000	Big Horn	Outcrop or artificial surface exposure	Gneiss	"QUARTZOFELDSPATHIC - - QUARTZ, PLAGIOCLASE, BIOTITE, AND SOMETIMES MICROCLINE."	Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIGHORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
109	-107.166667	44.150000	107	10	0	W	44	9	0	N	US	WY	Washakie	24000	Meadowlark Lake	Outcrop or artificial surface exposure	Gneiss	"QUARTZOFELDSPATHIC - - QUARTZ, PLAGIOCLASE, BIOTITE, AND SOMETIMES MICROCLINE"	Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIGHORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
110	-106.850000	44.266667	106	51	0	W	44	16	0	N	US	WY	Johnson	24000	North Ridge	Outcrop or artificial surface exposure	Gneiss	"QUARTZOFELDSPATHIC--QUARTZ, PLAGIOCLASE, BIOTITE, AND SOMETIMES MICROCLINE"	Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIGHORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
111	-107.066667	44.066667	107	4	0	W	44	4	0	N	US	WY	Johnson	24000	Hazelton Peak	Outcrop or artificial surface exposure	Gneiss	"QUARTZOFELDSPATHIC--QUARTZ, PLAGIOCLASE, BIOTITE, AND SOMETIMES MICROCLINE"	Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIGHORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
112	-107.000000	44.416667	107	0	0	W	44	25	0	N	US	WY	Johnson	24000	Stone Mountain	Outcrop or artificial surface exposure	Gneiss	"QUARTZOFELDSPATHIC--QUARTZ, PLAGIOCLASE, BIOTITE, AND SOMETIMES MICROCLINE"	Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIGHORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
113	-107.100000	44.400000	107	6	0	W	44	24	0	N	US	WY	Johnson	24000	Willow Park Reservoir	Outcrop or artificial surface exposure	Gneiss	"QUARTZOFELDSPATHIC--QUARTZ, PLAGIOCLASE, BIOTITE, AND SOMETIMES MICROCLINE"	Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIGHORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
114	-107.183333	44.283333	107	11	0	W	44	17	0	N	US	WY	Big Horn	24000	Lake Helen	Outcrop or artificial surface exposure	Gneiss	"QUARTZOFELDSPATHIC - - QUARTZ, PLAGIOCLASE, BIOTITE, AND SOMETIMES MICROCLINE"	Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIGHORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
115	-107.300000	44.333333	107	18	0	W	44	20	0	N	US	WY	Big Horn	24000	Lake Solitude	Outcrop or artificial surface exposure	Gneiss	"QUARTZOFELDSPATHIC -- QUARTZ, PLAGIOCLASE, BIOTITE, SOMETIMES MICROCLINE"	Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIGHORN    MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
116	-106.950000	44.266667	106	57	0	W	44	16	0	N	US	WY	Johnson	24000	Hunter Mesa	Outcrop or artificial surface exposure	Gneiss	"QUARTZOFELDSPATHIC--QUARTZ, PLAGIOCLASE, BIOTITE, AND SOMETIMES MICROCLINE"	Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIGHORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
117	-107.250000	44.450000	107	15	0	W	44	27	0	N	US	WY	Johnson	24000	Shell Lake	Outcrop or artificial surface exposure	Agmatite	MIGMATITE THAT LOOKS LIKE A BRECCIA	Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIGHORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
118	-106.950000	44.516667	106	57	0	W	44	31	0	N	US	WY	Johnson	24000	Story	Outcrop or artificial surface exposure	Quartz diorite		Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIGHORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
119	-107.333333	44.550000	107	20	0	W	44	33	0	N	US	WY	Johnson	24000	Dome Lake	Outcrop or artificial surface exposure	Quartz diorite		Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIGHORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
120	-107.333333	44.333333	107	20	0	W	44	20	0	N	US	WY	Big Horn	24000	Lake Solitude	Outcrop or artificial surface exposure	Quartz diorite		Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIG HORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
121	-107.083333	44.566667	107	5	0	W	44	34	0	N	US	WY	Sheridan	24000	Little Goose Creek	Outcrop or artificial surface exposure	Quartz diorite		Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIG HORN  MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
122	-107.766667	44.700000	107	46	0	W	44	42	0	N	US	WY	Big Horn	24000	Leavitte Reservoir	Outcrop or artificial surface exposure	Quartz monzonite		Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIG HORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
123	-107.400000	44.783333	107	24	0	W	44	47	0	N	US	WY	Sheridan	24000	Skull Ridge	Outcrop or artificial surface exposure	Quartz monzonite		Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIG HORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
124	-107.466667	44.800000	107	28	0	W	44	48	0	N	US	WY	Sheridan	24000	Skull Ridge	Outcrop or artificial surface exposure	Quartz monzonite		Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIG HORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
125	-107.383333	44.750000	107	23	0	W	44	45	0	N	US	WY	Sheridan	24000	Woodrock	Outcrop or artificial surface exposure	Schist	A SKIALITH	Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIGHORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
126	-107.100000	44.250000	107	6	0	W	44	15	0	N	US	WY	Johnson	24000	Powder River Pass	Outcrop or artificial surface exposure	Quartz diorite	LAKE MCLAIN QUARTZ DIORITE	Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIGHORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
127	-107.233333	44.400000	107	14	0	W	44	24	0	N	US	WY	Big Horn	24000	Cloud Peak	Outcrop or artificial surface exposure	Peridotite		Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIGHORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
128	-107.866667	44.833333	107	52	0	W	44	50	0	N	US	WY	Big Horn	24000	Bald Mountain	Outcrop or artificial surface exposure	Dolerite		Gulf Research	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BIG HORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
129	-107.483333	44.683333	107	29	0	W	44	41	0	N	US	WY	Sheridan	24000	Woodrock	Outcrop or artificial surface exposure	Quartz monzonite		Gulf Research	"Marvin, R.F."	74 08	Accurate to within 5 minute (~5 miles)	BIG HORN MOUNTAINS	"Heimlich, R.A., and Banks, P.O., 1968, Radiometric Age Determinations, Bighorn Mountains, Wyoming: American Journal of Science, v. 266, p. 180-192."	
130	-106.166667	41.183333	106	10	0	W	41	11	0	N	US	WY	Albany	24000	Albany	Outcrop or artificial surface exposure	Granite	"SHERMAN TYPE GRANITE--MASSIVE, GREYISH-   ORANGE-PINK, MEDIUM GRAINED, HORNBLENDE-BIOTITE GRANITE. PLAGIOCLASE IS CALCIC OLIGOCLASE TO ANDESINE WITH SLIGHTLY SERICITIZED CORE ZONES."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
131	-106.133333	41.179167	106	8	0	W	41	10	45	N	US	WY	Albany	24000	Albany	Outcrop or artificial surface exposure	Adamellite	"SHERMAN-TYPE GRANITE.  MASSIVE, MEDIUM-GRAINED, PORPHYRITIC, PALE REDDISH-BROWN, HORNBLENDE ADAMELLITE.  PLAGIOCLASE MODERATELY ALTERED TO KAOLINITE(?) AND EPIDOTE.  HORNBLENDE PARTIALLY REPLACED BY CHLORITE, EPIDOTE, AND MAGNETITE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
132	-106.050000	41.166667	106	3	0	W	41	10	0	N	US	WY	Albany	24000	Lake Owen	Outcrop or artificial surface exposure	Granite	"SHERMAN-TYPE GRANITE.    MASSIVE, MODERATE -ORANGE-PINK, MEDIUM-GRAINED, HORNBLENDE-BIOTITE GRANITE; PLAGIOCLASE MODERATELY REPLACED BY SERICITE AND EPIDOTE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
133	-106.083333	41.095833	106	5	0	W	41	5	45	N	US	WY	Albany	24000	Woods Landing	Outcrop or artificial surface exposure	Pegmatite		"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
134	-106.150000	41.083333	106	9	0	W	41	5	0	N	US	WY	Albany	24000	Foxpark	Outcrop or artificial surface exposure	Tonalite	"SHERMAN-TYPE GRANITE.  MASSIVE, MEDIUM-TO-COARSE GRAINED TONALITE. PLAGIOCLASE BENT AND MICROFAULTED.  PRIMARY MAFIC MINERALS TOTALLY REPLACED BY CHLORITE, EPIDOTE, PLAGIOCLASE, AND MAGNETITE"	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
135	-106.291667	41.100000	106	17	30	W	41	6	0	N	US	WY	Albany	24000	Horatio Rock	Outcrop or artificial surface exposure	Pegmatite		"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
136	-106.716667	41.279167	106	43	0	W	41	16	45	N	US	WY	Carbon	24000	Cow Creek	Outcrop or artificial surface exposure	Adamellite	"MEDIUM-GRAINED, PORPHYRITIC, YELLOWISH-GRAY, MUSCOVITE-BIOTITE ADAMELLITE.  BAGGOT ROCKS GRANITE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
137	-106.733333	41.275000	106	44	0	W	41	16	30	N	US	WY	Carbon	24000	Cow Creek	Outcrop or artificial surface exposure	Adamellite	"BAGGOT ROCKS GRANITE.  MEDIUM-GRAINED, PORPHYRITIC, YELLOWISH-GRAY, BIOTITE ADAMELLITE.  MINOR MUSCOVITE.  EPIDOTE AND SERICITE IN CORE OF PLAGIOCLASE CRYSTALS."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
138	-106.708333	41.266667	106	42	30	W	41	16	0	N	US	WY	Carbon	24000	Cow Creek	Outcrop or artificial surface exposure	Adamellite	"BAGGOT ROCKS GRANITE. MEDIUM-GRAINED, GRAYISH-YELLOW, BIOTITE ADAMELLITE.  MINOR HORNBLENDE AND EPIDOTE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
139	-106.733333	41.275000	106	44	0	W	41	16	30	N	US	WY	Carbon	24000	Cow Creek	Outcrop or artificial surface exposure	Adamellite	"BAGGOT ROCKS GRANITE.  MASSIVE MEDIUM-GRAINED, PALE-YELLOWISH-BROWN, HORNBLENDE-BIOTITE ADAMELLITE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
140	-106.741667	41.308333	106	44	30	W	41	18	30	N	US	WY	Carbon	24000	Cow Creek	Outcrop or artificial surface exposure	Adamellite	"BAGGOT ROCKS GRANITE.  WEATHERED, MEDIUM-GRAINED, FLUORITE-BIOTITE ADAMELLITE.  MINOR MUSCOVITE; PLAGIOCLASE CONTAINS 15-20% ANORTHITE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
141	-106.733333	41.279167	106	44	0	W	41	16	45	N	US	WY	Carbon	24000	Cow Creek	Outcrop or artificial surface exposure	Adamellite	"BAGGOT ROCKS GRANITE.  MEDIUM-GRAINED, PORPHYRITIC, BIOTITE ADAMELLITE.  MINOR MUSCOVITE, EPIDOTE, SPHENE, APATITE, AND ZIRCON. PLAGIOCLASE CONTAINS 18-25% ANORTHITE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
142	-106.733333	41.279167	106	44	0	W	41	16	45	N	US	WY	Carbon	24000	Cow Creek	Outcrop or artificial surface exposure	Adamellite	"BAGGOT ROCKS GRANITE.  MEDIUM-GRAINED, PORPHYRITIC, BIOTITE ADAMELLITE.  MINOR MUSCOVITE, EPIDOTE, SPHENE, APATITE, AND ZIRCON. PLAGIOCLASE CONTAINS 18 - 25% ANORTHITE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
143	-106.491667	41.209722	106	29	30	W	41	12	35	N	US	WY	Carbon	24000	Overlook Hill	Outcrop or artificial surface exposure	Adamellite gneiss	"MEDIUM-GRAINED, MUSCOVITE - BIOTITE ADAMELLITE GNEISS.  SLIGHT DEVELOPMENT OF MORTAR STRUCTURE. BIOTITE LOOKS SHREDDED."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
144	-106.495833	41.211111	106	29	45	W	41	12	40	N	US	WY	Carbon	24000	Overlook Hill	Outcrop or artificial surface exposure	Adamellite gneiss	"MEDIUM-GRAINED, BIOTITE ADAMELLITE GNEISS.  SOME CATACLASIS.  BIOTITE PARTIALLY REPLACED BY MAGNETITE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
145	-106.500000	41.211111	106	30	0	W	41	12	40	N	US	WY	Carbon	24000	Overlook Hill	Outcrop or artificial surface exposure	Adamellite gneiss	"MEDIUM-GRAINED,  BIOTITE-MUSCOVITE ADAMELLITE-GNEISS.  PLAGIOCLASE IS VERY SLIGHTLY ALTERED TO KAOLINITE(?)."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
146	-106.516667	41.208333	106	31	0	W	41	12	30	N	US	WY	Carbon	24000	Barcus Peak	Outcrop or artificial surface exposure	Leucogranite	"FINE-TO-MEDIUM GRAINED, NEARLY MASSIVE LEUCOGRANITE.  MAJOR DARK MINERAL IS MAGNETITE, LESS THAN 1% OF ROCK."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
147	-106.516667	41.208333	106	31	0	W	41	12	30	N	US	WY	Carbon	24000	Barcus Peak	Outcrop or artificial surface exposure	Leucogranite	"FINE-TO MEDIUM GRAINED, NEARLY MASSIVE LEUCOGRANITE.  MAJOR DARK MINERAL IS MAGNETITE, LESS THAN 1% OF ROCK."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
148	-106.516667	41.208333	106	31	0	W	41	12	30	N	US	WY	Carbon	24000	Barcus Peak	Outcrop or artificial surface exposure	Adamellite gneiss	"MEDIUM-GRAINED, BIOTITE ADAMELLITE GNEISS."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
150	-106.708333	41.358333	106	42	30	W	41	21	30	N	US	WY	Carbon	24000	Cow Creek	Outcrop or artificial surface exposure	Adamellite gneiss	"MEDIUM-GRAINED WHITE, MUSCOVITE-BIOTITE-GARNET ADAMELLITE GNEISS"	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
151	-106.700000	41.400000	106	42	0	W	41	24	0	N	US	WY	Carbon	24000	Finley Reservoir	Outcrop or artificial surface exposure	Adamellite gneiss	"MEDIUM-GRAINED, VERY LIGHT GRAY, GARNET-MUSCOVITE-BIOTITE ADAMELLITE GNEISS"	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
152	-106.725000	41.308333	106	43	30	W	41	18	30	N	US	WY	Carbon	24000	Cow Creek	Outcrop or artificial surface exposure	Adamellite gneiss	"MEDIUM-GRAINED, VERY-LIGHT-GRAY, MUSCOVITE-BIOTITE ADAMELLITE GNEISS."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
153	-106.233333	41.591667	106	14	0	W	41	35	30	N	US	WY	Carbon	24000	Arlington	Outcrop or artificial surface exposure	Adamellite gneiss	"MEDIUM-GRAINED, GARNET-BIOTITE-MUSCOVITE ADAMELLITE GNEISS. MODERATELY CATACLASTIC TEXTURE WITH WIDELY-SPACED THIN-SHEAR ZONES.  BIOTITE IS BADLY ALTERED."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
154	-106.233333	41.600000	106	14	0	W	41	36	0	N	US	WY	Carbon	24000	Arlington	Outcrop or artificial surface exposure	Gneiss	"MEDIUM-GRAINED, YELLOWISH -GRAY, QUARTZ-OLIGOCLASE GNEISS.  MICROCLINE COMPRISES LESS THAN 10% OF ROCK.  BIOTITE ALMOST COMPLETELY REPLACED BY CHLORITE.  STRONG CATACLASTIC TEXTURE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
155	-106.225000	41.600000	106	13	30	W	41	36	0	N	US	WY	Carbon	24000	Arlington	Outcrop or artificial surface exposure	Adamellite gneiss	"MEDIUM-GRAINED, GARNET-BIOTITE-MUSCOVITE ADAMELLITE GNEISS. NO CATACLASIS TEXTURE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
156	-106.733333	41.279167	106	44	0	W	41	16	45	N	US	WY	Carbon	24000	Cow Creek	Outcrop or artificial surface exposure	Adamellite	"BAGGOT ROCKS GRANITE.  MEDIUM-GRAINED, PORPHYRITIC, BIOTITE ADAMELLITE WITH MINOR MUSCOVITE, EPIDOTE, SPHENE, APATITE, AND ZIRCON.  PLAGIOCLASE HAS 18-25% ANORTHITE"	"University of Minnesota, Yale University, Lamont (Columbia University)"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
157	-106.741667	41.308333	106	44	30	W	41	18	30	N	US	WY	Carbon	24000	Cow Creek	Outcrop or artificial surface exposure	Adamellite	"BAGGOT ROCKS GRANITE. WEATHERED, MEDIUM-GRAINED, FLUORITE-BIOTITE ADAMELLITE. MINOR MUSCOVITE; PLAGIOCLASE CONTAINS 15-20% ANORTHITE."	"University of Minnesota, Yale University, Lamont (Columbia University)"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTIANS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
158	-106.233333	41.350000	106	14	0	W	41	21	0	N	US	WY	Albany	24000	Centennial	Outcrop or artificial surface exposure	Slate	"FRENCH SLATE; DARK-GRAY, GRAPHITIC SLATE COMPRISED OF WHITE MICA, CHLORITE, QUARTZ, ALBITE AND GRAPHITE PLUS VERY POIKILITIC, SUBHEDRAL PORPHYROBLASTS OF ALBITE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
159	-106.233333	41.350000	106	14	0	W	41	21	0	N	US	WY	Albany	24000	Centennial	Outcrop or artificial surface exposure	Slate	"FRENCH SLATE; DARK-GRA, GRAPHITIC SLATE CONSISTING OF WHITE MICA, CHLORITE, QUARTZ, ALBITE,  AND GRAPHITE PLUS VERY POIKILITIC, SUBHEDRAL PORPHYROBLASTS OF ALBITE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
160	-106.233333	41.350000	106	14	0	W	41	21	0	N	US	WY	Albany	24000	Centennial	Outcrop or artificial surface exposure	Slate	"FRENCH SLATE; DARK-GRAY, GRAPHITIC SLATE CONSISTING OF WHITE MICA, CHLORITE, QUARTZ, ALBITE, AND GRAPHITE"	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
161	-106.233333	41.350000	106	14	0	W	41	21	0	N	US	WY	Albany	24000	Centennial	Outcrop or artificial surface exposure	Slate	"FRENCH SLATE; DARK-GRAY, GRAPHITIC SLATE CONSISTING OF WHITE MICA, CHLORITE, QUARTZ, ALBITE, AND GRAPHITE"	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
162	-106.233333	41.350000	106	14	0	W	41	21	0	N	US	WY	Albany	24000	Centennial	Outcrop or artificial surface exposure	Slate	"FRENCH SLATE;  DARK-GRAY, GRAPHITIC SLATE CONSISTING OF WHITE MICA, CHLORITE, QUARTZ, ALBITE, AND GRAPHITE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
163	-106.233333	41.350000	106	14	0	W	41	21	0	N	US	WY	Albany	24000	Centennial	Outcrop or artificial surface exposure	Slate	"FRENCH SLATE;  DARK-GRAY, GRAPHITIC SLATE CONSISTING OF WHITE MICA, CHLORITE, QUARTZ, ALBITE, AND GRAPHITE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
164	-106.325000	41.333333	106	19	30	W	41	20	0	N	US	WY	Carbon	24000	Medicine Bow Peak	Outcrop or artificial surface exposure	Slate	"LOOKOUT SCHIST;   FLAGGY SLATE CONSISTING OF QUARTZ, WHITE MICA, CHLORITE, AND ALBITE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
165	-106.325000	41.333333	106	19	30	W	41	20	0	N	US	WY	Carbon	24000	Medicine Bow Peak	Outcrop or artificial surface exposure	Slate	"LOOKOUT SCHIST;   FLAGGY SLATE CONSISTING OF QUARTZ, WHITE MICA, CHLORITE, AND ALBITE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
166	-106.325000	41.333333	106	19	30	W	41	20	0	N	US	WY	Carbon	24000	Medicine Bow Peak	Outcrop or artificial surface exposure	Slate	"LOOKOUT SCHIST;   FLAGGY SLATE CONSISTING OF QUARTZ, WHITE MICA, CHLORITE, AND ALBITE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
167	-106.325000	41.333333	106	19	30	W	41	20	0	N	US	WY	Carbon	24000	Medicine Bow Peak	Outcrop or artificial surface exposure	Calc-silicate	"LOOKOUT SCHIST; HORNFELS CONSISTING OF QUARTZ, CALCITE (50%), CHLORITE, SPHENE, ALBITE, AND SCARCE WHITE MICA OR TALC."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
168	-106.325000	41.333333	106	19	30	W	41	20	0	N	US	WY	Carbon	24000	Medicine Bow Peak	Outcrop or artificial surface exposure	Slate	"LOOKOUT SCHIST; FLAGGY SLATE CONSISTING OF QUARTZ, WHITE MICA, CHLORITE, AND ALBITE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
169	-106.358333	41.337500	106	21	30	W	41	20	15	N	US	WY	Carbon	24000	Medicine Bow Peak	Outcrop or artificial surface exposure	Phyllite	"HEADQUARTERS SCHIST;  FINELY LAMINATED, SPOTTED, DARK-GREENISH-GRAY PHYLLITE CONSISTING OF QUARTZ, WHITE MICA, CHLORITE, ALBITE, EPIDOTE, AND BIOTITE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
170	-106.233333	41.570833	106	14	0	W	41	34	15	N	US	WY	Carbon	24000	Arlington	Outcrop or artificial surface exposure	Schist	"DEEP LAKE FORMATION; STRONGLY CRINKLED, FINE-GRAINED, GARNET-MUSCOVITE-BIOTITE SCHIST PLUS MINOR PLAGIOCLASE (2-5%)."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
171	-106.233333	41.570833	106	14	0	W	41	34	15	N	US	WY	Carbon	24000	Arlington	Outcrop or artificial surface exposure	Schist	"DEEP LAKE FORMATION; STRONGLY CRINKLED, FINE-GRAINED, GARNET-MUSCOVITE-BIOTITE SCHIST PLUS MINOR PLAGIOCLASE (2-5%)."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
172	-106.316667	42.733333	106	19	0	W	42	44	0	N	US	WY	Natrona	24000	Crimson Dawn	Quarry	Pegmatite		"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"SE CORNER OF SEC. 17, T32N, R79W IN A QUARRY ON CASPER MOUNTAIN"	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
173	-106.491667	41.206944	106	29	30	W	41	12	25	N	US	WY	Carbon	24000	Overlook Hill	Outcrop or artificial surface exposure	Pegmatite		"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"MEDICINE BOW MOUNTAINS, PLATTE PROSPECT"	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
174	-106.587500	41.283333	106	35	15	W	41	17	0	N	US	WY	Carbon	24000	Ryan Park	Outcrop or artificial surface exposure	Pegmatite		"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
175	-106.225000	41.600000	106	13	30	W	41	36	0	N	US	WY	Carbon	24000	Arlington	Outcrop or artificial surface exposure	Adamellite gneiss	"MEDIUM-GRAINED, GARNET-BIOTITE-MUSCOVITE ADAMELLITE GNEISS.  NO CATACLASIS TEXTURE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
176	-106.733333	41.279167	106	44	0	W	41	16	45	N	US	WY	Carbon	24000	Cow Creek	Outcrop or artificial surface exposure	Adamellite	"BAGGOT ROCKS GRANITE.  MEDIUM-GRAINED, PORPHYRITIC, BIOTITE ADAMELLITE.  MINOR MUSCOVITE, EPIDOTE, SPHENE, APATITE, AND ZIRCON. PLAGIOCLASE CONTAINS 18-25% ANORTHITE."	"University of Minnesota, Yale University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	MEDICINE BOW MOUNTAINS	"Hills, F.A., Gast, P.W., Houston, R.S., and Swainbank, I.G., 1968, Precambrian Geochronology Of The Medicine Bow Mountains, Southeastern Wyoming: Geological Society of America Bulletin, v. 79, P.1757-1783."	
177	-108.937500	41.788889	108	56	15	W	41	47	20	N	US	WY	Sweetwater	62500	Superior	Outcrop or artificial surface exposure	Wyomingite	PHENOCRYSTS OF LEUCITE AND PHLOGOPITE WITH MINOR DIOPSIDE AND HORNBLENDE; GROUNDMASS IS A GRAY-GREEN GLASS.	"Brookhaven, University of Minnesota"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"NE1/4 SE1/4 SE1/4 SEC. 15, T21N, R102W, LEUCITE HILLS"	"Bradley, W.H., 1964, Geology of the Green River Formation and associated Eocene rocks in southeastern Wyoming and adjacent Parts of Colorado and Utah:  U.S. Geological Survey Professional Paper 496A, p. A57-A58"	
178	-109.016667	41.908333	109	1	0	W	41	54	30	N	US	WY	Sweetwater	62500	Boars Tusk	Outcrop or artificial surface exposure	Wyomingite	PHENOCRYSTS OF LEUCITE AND PHLOGOPITE WITH MINOR DIOPSIDE AND HORNBLENDE; GROUNDMASS IS A GRAY-GREEN GLASS.	"Brookhaven, University of Minnesota"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"SE1/4 SE1/4 NW1/4 SEC 1, T22N, R103W, LEUCITE HILLS"	"Bradley, W.H., 1964, Geology of the Green River Formation and associated Eocene rocks in southeastern Wyoming and adjacent Parts of Colorado and Utah:  U.S. Geological Survey Professional Paper 496A, p. A57-A58"	
179	-109.858333	43.837500	109	51	30	W	43	50	15	N	US	WY	Fremont	24000	Shoshone Pass	Outcrop or artificial surface exposure	Basalt	"LIGHT-COLORED, PLATY FLOW.  CRESCENT HILL BASALT."	"Geochron (Krueger of Cambridge, MA)"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"NORTHWEST FLANK OF CRESCENT MOUNTAIN ON CONTINENTAL DIVIDE, ABSAROKA MOUNTAINS"	"Blackstone, D.L., Jr., 1966, Pliocene Volcanism, Southern Absaroka Mountains, Wyoming: Contributions To Geology, University of Wyoming, Department of Geology, v. 5, p. 21-30."	
180	-106.466667	42.766667	106	28	0	W	42	46	0	N	US	WY	Natrona	24000	Goose Egg	Outcrop or artificial surface exposure	Bentonite	3-FOOT THICK BED OF BENTONITE NEAR BASE OF MOWRY SHALE	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"ROADCUT ON HIGHWAY #220, 10 MILES SOUTHWEST OF CASPER AT EMIGRANT GAP ANTICLINE."	"Folinsbee, R.E., Baadsgaard, H., and Cummings, G.L., 1963, Dating of volcanic ash beds (bentonites) by the K-Ar method:  Nuclear Science Series, Report No. 38, p. 70-82"	
181	-106.466667	42.766667	106	28	0	W	42	46	0	N	US	WY	Natrona	24000	Goose Egg	Outcrop or artificial surface exposure	Bentonite	2-FOOT THICK BED OF BENTONITE ABOUT 12 FEET ABOVE BASE OF MOWRY SHALE.	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"ROADCUT ON HIGHWAY #220, 10 MILES SOUTHWEST OF CASPER AT EMIGRANT GAP ANTICLINE."	"Folinsbee, R.E., Baadsgaard, H., and Cummings, G.L., 1963, Dating of volcanic ash beds (bentonites) by the K-Ar method:  Nuclear Science Series, Report No. 38, p. 70-82"	
182	-106.466667	42.766667	106	28	0	W	42	46	0	N	US	WY	Natrona	24000	Goose Egg	Outcrop or artificial surface exposure	Bentonite	2-FOOT THICK BED OF BENTONITE ABOUT 30 FEET ABOVE BASE OF MOWRY SHALE.	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"ROADCUT ON HIGHWAY #220, 10 MILES SOUTHWEST OF CASPER AT EMIGRANT GAP ANTICLINE."	"Folinsbee, R.E., Baadsgaard, H., and Cummings, G.L., 1963, Dating of volcanic ash beds (bentonites) by the K-Ar method:  Nuclear Science Series, Report No. 38, p. 70-82"	
183	-106.466667	42.766667	106	28	0	W	42	46	0	N	US	WY	Natrona	24000	Goose Egg	Outcrop or artificial surface exposure	Bentonite	"CLAYSPUR BENTONITE, 8-FOOT THICK BED AT TOP OF MOWRY SHALE"	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"ROADCUT ON HIGHWAY #220, 10 MILES SOUTHWEST OF CASPER AT EMIGRANT GAP ANTICLINE."	"Folinsbee, R.E., Baadsgaard, H., and Cummings, G.L., 1963, Dating of volcanic ash beds (bentonites) by the K-Ar method:  Nuclear Science Series, Report No. 38, p. 70-82"	
184	-106.466667	42.766667	106	28	0	W	42	46	0	N	US	WY	Natrona	24000	Goose Egg	Outcrop or artificial surface exposure	Bentonite	ONE-FOOT BED OF BENTONITE NEAR BASE OF FRONTIER FORMATION	University of Alberta	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"ROADCUT ON HIGHWAY #220, 10 MILES SOUTHWEST OF CASPER AT EMIGRANT GAP ANTICLINE."	"Folinsbee, R.E., Baadsgaard, H., and Cummings, G.L., 1963, Dating of volcanic ash beds (bentonites) by the K-Ar method:  Nuclear Science Series, Report No. 38, p. 70-82"	
185	-106.741667	42.637500	106	44	30	W	42	38	15	N	US	WY	Natrona	24000	Clarkson Hill	Outcrop or artificial surface exposure	Ash	"LONE TREE GULCH ASH B, EARLY CHADRONIAN MAMMAL STAGE"	"University of California, Berkeley"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"NEAR CENTER OF SE1/4 SEC. 23, T31N, R83W"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
186	-106.741667	42.637500	106	44	30	W	42	38	15	N	US	WY	Natrona	24000	Clarkson Hill	Outcrop or artificial surface exposure	Ash	"LONE TREE GULCH ASH B, EARLY CHADRONIAN MAMMAL STAGE"	"University of California, Berkeley"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"NEAR CENTER OF SE1/4 SEC. 23, T31N, R83W"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
187	-106.741667	42.637500	106	44	30	W	42	38	15	N	US	WY	Natrona	24000	Clarkson Hill	Outcrop or artificial surface exposure	Ash	"LONE TREE GULCH ASH G, MIDDLE CHADRONIAN MAMMAL STAGE"	"University of California, Berkeley"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"NEAR CENTER OF SE1/4 SEC. 23, T31N, R83W"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
188	-106.741667	42.637500	106	44	30	W	42	38	15	N	US	WY	Natrona	24000	Clarkson Hill	Outcrop or artificial surface exposure	Ash	"LONE TREE GULCH ASH F, MIDDLE CHADRONIAN MAMMAL STAGE"	"University of California, Berkeley"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"NEAR CENTER OF SE1/4 SEC. 23, T31N, R83W"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
189	-106.741667	42.637500	106	44	30	W	42	38	15	N	US	WY	Natrona	24000	Clarkson Hill	Outcrop or artificial surface exposure	Ash	"LONE TREE GULCH ASH F, MIDDLE CHADRONIAN MAMMAL STAGE"	"University of California, Berkeley"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"NEAR CENTER OF SE1/4 SEC. 23, T31N, R83W"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
190	-106.741667	42.637500	106	44	30	W	42	38	15	N	US	WY	Natrona	24000	Clarkson Hill	Outcrop or artificial surface exposure	Ash	"LONE TREE GULCH ASH J, LATE CHADRONIAN MAMMAL STAGE"	"University of California, Berkeley"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"NEAR CENTER OF SE1/4 SEC. 23, T31N, R83W"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
191	-110.716667	43.566667	110	43	0	W	43	34	0	N	US	WY	Teton	24000	Gros Ventre Junction	Outcrop or artificial surface exposure	Obsidian	"TEEWINOT FORMATION, RELATED TO HEMPHILLIAN MAMMAL STAGE"	"University of California, Berkeley"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"800 FEET EAST OF WEST LINE, 200 FEET SOUTH OF NORTH LINE OF SEC. 36, T42N, R116W, NEAR JACKSON HOLE."	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
192	-108.283333	42.826389	108	17	0	W	42	49	35	N	US	WY	Fremont	24000	Bringolf Ranch	Outcrop or artificial surface exposure	Tuff	WIND RIVER FORMATION CONTAINING BIOTITE-BEARING TUFF RELATED TO LATE WASATCHIAN MAMMAL STAGE	"University of California, Berkeley"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"SEC SE1/4 SE1/4 SEC. 14, T33N, R96W, BEAVER CREEK OIL AND GAS FIELD."	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
193	-108.183333	42.716667	108	11	0	W	42	43	0	N	US	WY	Fremont	24000	Dishpan Butte	Outcrop or artificial surface exposure	Tuff	TUFF RELATED TO LATE BRIDGERIAN OR EARLY UINTAN MAMMAL STAGE.	"University of California, Berkeley"	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	"SW1/4 SEC. 28, T32N, R95W, ONE MILE NORTH OF WAGONBED SPRINGS (PROBABLY SEC. 27 INSTEAD OF SEC. 28)."	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
194	-108.266667	42.616667	108	16	0	W	42	37	0	N	US	WY	Fremont	24000	Red Canyon	Outcrop or artificial surface exposure	Bentonitic ash	ASH IS RELATED TO LATE WASATCHIAN OR EARLY BRIDGERIAN MAMMAL STAGE	"University of California, Berkeley"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"NE1/4 SE1/4 SEC. 35, T31N, R96W, GREEN COVE"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
195	-107.425000	43.325000	107	25	30	W	43	19	30	N	US	WY	Natrona	24000	Badwater	Outcrop or artificial surface exposure	Andesitic tuff	TUFF RELATED TO UINTAN MAMMAL STAGE	"University of California, Berkeley"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"NE1/4 SEC. 29, T39N, R88W"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
196	-109.700000	43.433333	109	42	0	W	43	26	0	N	US	WY	Fremont	24000	Simpson Lake	Outcrop or artificial surface exposure	Pegmatite	INTRUSIVE PEGMATITE	"Brookhaven, Oxford University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	NORTHWEST END OF THE WIND RIVER MOUNTAINS	"Bassett, W.A., and Giletti, B.J., 1963, Precambrian ages in the Wind River Mountains, Wyoming:  Geological Society of America Bulletin, v. 74, p. 209-212"	
197	-109.754167	43.425000	109	45	15	W	43	25	30	N	US	WY	Sublette	24000	Union Peak	Outcrop or artificial surface exposure	Pegmatite	INTRUSIVE PEGMATITE	"Brookhaven, Oxford University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	NORTHWEST END OF THE WIND RIVER MOUNTAINS.	"Bassett, W.A., and Giletti, B.J., 1963, Precambrian ages in the Wind River Mountains, Wyoming:  Geological Society of America Bulletin, v. 74, p. 209-212"	
198	-109.783333	43.408333	109	47	0	W	43	24	30	N	US	WY	Sublette	24000	Union Peak	Outcrop or artificial surface exposure	Pegmatite	INTRUSIVE PEGMATITE	"Brookhaven, Oxford University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	NORTHWEST END OF THE WIND RIVER MOUNTAINS	"Bassett, W.A., and Giletti, B.J., 1963, Precambrian ages in the Wind River Mountains, Wyoming:  Geological Society of America Bulletin, v. 74, p. 209-212"	
199	-109.754167	43.430556	109	45	15	W	43	25	50	N	US	WY	Sublette	24000	Union Peak	Outcrop or artificial surface exposure	Pegmatite	INTRUSIVE PEGMATITE	"Brookhaven, Oxford University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	NORTHWEST END OF THE WIND RIVER MOUNTAINS	"Bassett, W.A., and Giletti, B.J., 1963, Precambrian ages in the Wind River Mountains, Wyoming:  Geological Society of America Bulletin, v. 74, p. 209-212"	
200	-109.727778	43.416667	109	43	40	W	43	25	0	N	US	WY	Fremont	24000	Simpson Lake	Outcrop or artificial surface exposure	Pegmatite	INTRUSIVE PEGMATITE	"Brookhaven, Oxford University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	NORTHWEST END OF THE WIND RIVER MOUNTAINS	"Bassett, W.A., and Giletti, B.J., 1963, Precambrian ages in the Wind River Mountains, Wyoming:  Geological Society of America Bulletin, v. 74, p. 209-212"	
201	-109.700000	43.433333	109	42	0	W	43	26	0	N	US	WY	Fremont	24000	Simpson Lake	Outcrop or artificial surface exposure	Gneiss		"Brookhaven, Oxford University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	NORTHWEST END OF THE WIND RIVER MOUNTAINS	"Bassett, W.A., and Giletti, B.J., 1963, Precambrian ages in the Wind River Mountains, Wyoming:  Geological Society of America Bulletin, v. 74, p. 209-212"	
202	-109.783333	43.408333	109	47	0	W	43	24	30	N	US	WY	Sublette	24000	Union Peak	Outcrop or artificial surface exposure	Gneiss	MAFIC COMPOSITION	"Brookhaven, Oxford University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	NORTHWEST END OF THE WIND RIVER MOUNTAINS	"Bassett, W.A., and Giletti, B.J., 1963, Precambrian ages in the Wind River Mountains, Wyoming:  Geological Society of America Bulletin, v. 74, p. 209-212"	
203	-109.733333	43.444444	109	44	0	W	43	26	40	N	US	WY	Fremont	24000	Simpson Lake	Outcrop or artificial surface exposure	Gneiss		"Brookhaven, Oxford University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	NORTHWEST END OF THE WIND RIVER MOUNTAINS	"Bassett, W.A., and Giletti, B.J., 1963, Precambrian ages in the Wind River Mountains, Wyoming:  Geological Society of America Bulletin, v. 74, p. 209-212"	
204	-109.741667	43.383333	109	44	30	W	43	23	0	N	US	WY	Fremont	24000	Simpson Lake	Outcrop or artificial surface exposure	Gneiss		"Brookhaven, Oxford University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	NORTHWEST END OF THE WIND RIVER MOUNTAINS	"Bassett, W.A., and Giletti, B.J., 1963, Precambrian ages in the Wind River Mountains, Wyoming:  Geological Society of America Bulletin, v. 74, p. 209-212"	
205	-109.754167	43.434722	109	45	15	W	43	26	5	N	US	WY	Sublette	24000	Union Peak	Float	Gneiss		"Brookhaven, Oxford University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	NORTHWEST END OF THE WIND RIVER MOUNTAINS	"Bassett, W.A., and Giletti, B.J., 1963, Precambrian ages in the Wind River Mountains, Wyoming:  Geological Society of America Bulletin, v. 74, p. 209-212"	
206	-105.475000	41.025000	105	28	30	W	41	1	30	N	US	WY	Albany	62500	Sherman Mountains	Outcrop or artificial surface exposure	Olivine diorite	"DARK, MEDIUM-GRAINED, HYPIDIOMORPHIC-GRANULAR ROCK CONTAINING BIOTITE, OLIVINE, ORTHOPYROXENE, CLINOPYROXENE, ANDESINE, AND MAGNETITE."	"Geochron (Krueger of Cambridge, MA)"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"SEC. 9, T12N, R72W, SOUTHERN END OF LARAMIE RANGE"	"Ferris, C.S., Jr., and Krueger, H.W., 1964, New radiogenic dates on igneous rocks from southern Laramie Range, Wyoming:  Geological Society of America Bulletin, v. 75, p. 1051-1054"	
207	-105.450000	41.008333	105	27	0	W	41	0	30	N	US	WY	Albany	62500	Sherman Mountains	Outcrop or artificial surface exposure	Granite	"PINK, MEDIUM-GRAINED SHERMAN GRANITE"	"Geochron (Krueger of Cambridge, MA)"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"SEC. 15, T12N, R72W, SOUTHERN END OF THE LARAMIE RANGE"	"Ferris, C.S., Jr., and Krueger, H.W., 1964, New radiogenic dates on igneous rocks from southern Laramie Range, Wyoming:  Geological Society of America Bulletin, v. 75, p. 1051-1054"	
208	-105.475000	41.025000	105	28	30	W	41	1	30	N	US	WY	Albany	62500	Sherman Mountains	Outcrop or artificial surface exposure	Basalt	"BLACK, FINE-GRAINED ROCK CONSISTING OF BIOTITE, PLAGIOCLASE, AMPHIBOLE, CHLORITE, AND XENOLITHIC GRAINS OF QUARTZ AND ALKALI FELDSPAR."	"Geochron (Krueger of Cambridge, MA)"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"SEC. 9, T12N, R72W, SOUTHERN END OF LARAMIE RANGE"	"Ferris, C.S., Jr., and Krueger, H.W., 1964, New radiogenic dates on igneous rocks from southern Laramie Range, Wyoming:  Geological Society of America Bulletin, v. 75, p. 1051-1054"	
209	-104.716667	44.591667	104	43	0	W	44	35	30	N	US	WY	Crook	62500	Devils Tower	Outcrop or artificial surface exposure	Phonolite porphyry	CONTAINS SODA-RICH ORTHOCLASE PHENOCRYSTS; DEVILS TOWER PHONOLITE PORPHYRY	Berkeley Geochronology Center	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	DEVILS TOWER	"Bassett, W.A., 1961, Potassium-argon age of Devils Tower, Wyoming:  Science, v. 134, no. 3487, p. 1373"	
210	-106.166667	41.950000	106	10	0	W	41	57	0	N	US	WY	Carbon	62500	Como Ridge	Outcrop or artificial surface exposure	Siltstone	"GLAUCONITIC SILTSTONE, REDWATER SHALE MEMBER, SUNDANCE FORMATION"	MIT	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	"FLATTOP ANTICLINE, WEST END OF LARAMIE BASIN"	"Hurley, P.M., Cormier, R.F., Hower, J., Fairbairn, H.W., and Pinson, W.H., Jr., 1960, Reliability of glauconite for age measurement by K-Ar and Rb-Sr methods: American Association of Petroleum Geologists Bulletin, v. 44, p. 1793-1808"	
211	-106.100000	41.883333	106	6	0	W	41	53	0	N	US	WY	Carbon	62500	Como Ridge	Outcrop or artificial surface exposure	Siltstone	"GLAUCONITIC BASAL CLAY-SILTSTONE, REDWATER SHALE MEMBER, SUNDANCE FORMATION."	MIT	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	"COMO ANTICLINE, WEST END OF LARAMIE BASIN"	"Hurley, P.M., Cormier, R.F., Hower, J., Fairbairn, H.W., and Pinson, W.H., Jr., 1960, Reliability of glauconite for age measurement by K-Ar and Rb-Sr methods: American Association of Petroleum Geologists Bulletin, v. 44, p. 1793-1808"	
212	-108.150000	43.333333	108	9	0	W	43	20	0	N	US	WY	Fremont	Unk	(Not given)	Outcrop or artificial surface exposure	(Not given)	PROBABLY A PEGMATITE	Lamont (Columbia University)	"Marvin, R.F."	74 07	Location not given or only in terms less accurate than 30 minutes	WIND RIVER CANYON	"Carr, D.R., and Kulp, J.L., 1957, Potassium-argon method of geochronology:  Geological Society of America Bulletin, v. 68, p. 763-784"	
213	-109.425000	44.966667	109	25	30	W	44	58	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Pegmatite	PEGMATITE IS ABOUT 100 FEET LONG AND 10 FEET WIDE AND IS ESSENTIALLY CONFORMABLE.	Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"NEAR CHRISTMAS LAKE, BEARTOOTH MOUNTAINS"	"Gast, P.W., Kulp, J.L., and Long, L.E., 1958, Absolute age of early Precambrian rocks in the Bighorn Basin of Wyoming and Montana, and southeastern Manitoba:  Transactions of the American Geophysical Union, v. 39, p. 322-334"	
214	-109.425000	44.966667	109	25	30	W	44	58	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Pegmatite	PEGMATITE IS ABOUT 100 FEET LONG AND 10 FEET WIDE AND IS ESSENTIALLY CONFORMABLE.	Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"NEAR CHRISTMAS LAKE, BEARTOOTH MOUNTAINS"	"Gast, P.W., Kulp, J.L., and Long, L.E., 1958, Absolute age of early Precambrian rocks in the Bighorn Basin of Wyoming and Montana, and southeastern Manitoba:  Transactions of the American Geophysical Union, v. 39, p. 322-334"	
215	-109.466667	44.958333	109	28	0	W	44	57	30	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Pegmatite	DISCORDANT PEGMATITE CONTAINING BERYL CRYSTALS	Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"1/4 MILE SOUTH OF BLACKSTONE LAKE, BEARTOOTH MOUNTAINS"	"Gast, P.W., Kulp, J.L., and Long, L.E., 1958, Absolute age of early Precambrian rocks in the Bighorn Basin of Wyoming and Montana, and southeastern Manitoba:  Transactions of the American Geophysical Union, v. 39, p. 322-334"	
216	-109.483333	44.958333	109	29	0	W	44	57	30	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Gneiss	"BIOTITE GNEISS CONTAINING MICROCLINE PORPHYROBLASTS; COMPOSITION OF GNEISS IS QUARTZ, MICROCLINE, PLAGIOCLASE, BIOTITE.  ROCK IS ALSO LISTED AS AMPHIBOLITE."	Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"ROADCUT ON HIGHWAY 12 SOUTHWEST OF FROZEN LAKE, BEARTOOTH MOUNTAINS."	"Gast, P.W., Kulp, J.L., and Long, L.E., 1958, Absolute age of early Precambrian rocks in the Bighorn Basin of Wyoming and Montana, and southeastern Manitoba:  Transactions of the American Geophysical Union, v. 39, p. 322-334"	
217	-109.183333	44.501389	109	11	0	W	44	30	5	N	US	WY	Park	62500	Cody	Outcrop or artificial surface exposure	Pegmatite	BIOTITE VEIN IN PEGMATITE	Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	ABOUT 500 FEET WEST OF CODY DAM IN SHOSHONE GORGE	"Gast, P.W., Kulp, J.L., and Long, L.E., 1958, Absolute age of early Precambrian rocks in the Bighorn Basin of Wyoming and Montana, and southeastern Manitoba:  Transactions of the American Geophysical Union, v. 39, p. 322-334"	
218	-107.500000	44.783333	107	30	0	W	44	47	0	N	US	WY	Sheridan	24000	Skull Ridge	Float	Gneiss	"VERY COARSE-GRAINED, AUGEN GNEISS (MICROCLINE PORPHYROBLASTS) CONSISTING OF PLAGIOCLASE, MICROCLINE, QUARTZ, BIOTITE, AND HORNBLENDE."	Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	"COLLECTED ALONG U.S. HIGHWAY 14, BIGHORN MOUNTAINS"	"Gast, P.W., Kulp, J.L., and Long, L.E., 1958, Absolute age of early Precambrian rocks in the Bighorn Basin of Wyoming and Montana, and southeastern Manitoba:  Transactions of the American Geophysical Union, v. 39, p. 322-334"	
219	-106.150000	41.300000	106	9	0	W	41	18	0	N	US	WY	Albany	24000	Centennial	Outcrop or artificial surface exposure	Biotite gneiss		Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	WEST OF CENTENNIAL	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
220	-105.300000	41.116667	105	18	0	W	41	7	0	N	US	WY	Albany	62500	Sherman Mountains	Outcrop or artificial surface exposure	Granite		Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	BUFORD	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
221	-105.383333	41.133333	105	23	0	W	41	8	0	N	US	WY	Albany	62500	Sherman Mountains	Outcrop or artificial surface exposure	Granite	THIN-SECTION SHOWED CONSIDERABLE CHLORITIZATION OF THE BIOTITE WHICH CONTAINED INCLUSIONS OF SPHENE OR ZIRCON WITH PLEOCHROIC HALOS.	"Geophysics Lab, CIW"	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	"ROADCUT ON U.S. ROUTE 30, 18 MILES EAST OF LARAMIE"	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
222	-108.450000	43.166667	108	27	0	W	43	10	0	N	US	WY	Fremont or Hot Springs	24000	Boysen	Outcrop or artificial surface exposure	Granite	WIND RIVER GRANITE; THIN-SECTION SHOWED EXTENSIVE CHLORITIZATION OF THE BIOTITE WHICH OCCURS IN VEINS MIXED WITH MUSCOVITE.  HYDROTHERMAL MUSCOVITE PRESENT.	"Geophysics Lab, CIW"	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	WIND RIVER CANYON	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
223	-111.000000	43.000000	111			W	43			N	US	WY	(Not given)	Unk	(Not given)	Outcrop or artificial surface exposure	Sandstone	"GLAUCONITIC SANDSTONE, 50 FEET ABOVE GROS VENTRE SHALE (BASE OF MIDDLE CAMBRIAN)."	"University of California, Berkeley"	"Marvin, R.F."	74 07	Location not given or only in terms less accurate than 30 minutes	LOCATION IS INDEFINITE	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
224	-111.000000	43.000000	111			W	43			N	US	WY	(Not given)	Unk	(Not given)	Outcrop or artificial surface exposure	Shale	GROS VENTRE SHALE (BASE OF MIDDLE CAMBRIAN)	"University of California, Berkeley"	"Marvin, R.F."	74 07	Location not given or only in terms less accurate than 30 minutes	LOCATION IS INDEFINITE	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
225	-107.916667	43.416667	107	55	0	W	43	25	0	N	US	WY	Fremont or Hot Springs	24000	Guffy Peak	Outcrop or artificial surface exposure	Pegmatite		"Geophysics Lab, CIW"	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	"BRIDGER MOUNTAIN, BONNEVILLE - SAMPLE LOCATION IS INDEFINITE"	"Davies, G.L., 1954, Age of rocks  ""In"" Abelson, P.H., Annual Report Of The Director: Geophysical Laboratory, Carnegie Institution of Washington Year Book 53, p. 104-106"	
226	-110.875000	43.666667	110	52	30	W	43	40	0	N	US	WY	Teton	24000	Grand Teton	Outcrop or artificial surface exposure	Pegmatite	PEGMATITE CUTTING BRIGHTEYED GNEISS	Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	"DEATH CANYON, TETON RANGE"	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
227	-110.833333	43.666667	110	50	0	W	43	40	0	N	US	WY	Teton	24000	Grand Teton	Outcrop or artificial surface exposure	Gneiss	BRIGHTEYED GNEISS	Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	TETON RANGE	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
228	-110.500000	43.500000	110	30	0	W	43	30	0	N	US	WY	Teton	250000	Driggs	Outcrop or artificial surface exposure	Pegmatite		Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 30 minutes (~30 miles)	EAST OF JACKSON	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
229	-109.750000	43.416667	109	45	0	W	43	25	0	N	US	WY	Fremont	250000	Thermopolis	Outcrop or artificial surface exposure	Pegmatite		Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 30 minutes (~30 miles)	"PEAT LAKE, NORTHERN WIND RIVER RANGE"	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
230	-109.250000	42.750000	109	15	0	W	42	45	0	N	US	WY	Fremont	250000	Lander	Outcrop or artificial surface exposure	Quartz monzonite		Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	SOUTHERN WIND RIVER RANGE	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
231	-108.166667	43.450000	108	10	0	W	43	27	0	N	US	WY	Fremont	24000	Boysen	Outcrop or artificial surface exposure	Pegmatite		Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	WIND RIVER CANYON	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
232	-108.083333	43.416667	108	5	0	W	43	25	0	N	US	WY	Fremont	24000	Birdseye Pass	Outcrop or artificial surface exposure	Pegmatite		Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	NORTH OF BONNEVILLE	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
233	-107.083333	44.150000	107	5	0	W	44	9	0	N	US	WY	Johnson	24000	Powder River Pass	Outcrop or artificial surface exposure	Gneiss	BANDED GNEISS	Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"POWDER RIVER PASS, BIGHORN RANGE"	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
234	-106.316667	42.733333	106	19	0	W	42	44	0	N	US	WY	Natrona	24000	Crimson Dawn	Outcrop or artificial surface exposure	Gneiss	BIOTITE GNEISS	Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"CASPER MOUNTAIN , NEAR CASPER"	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
235	-106.750000	41.500000	106	45	0	W	41	30	0	N	US	WY	Carbon	250000	Rawlins	Outcrop or artificial surface exposure	Gneiss	BIOTITE  GNEISS	Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 30 minutes (~30 miles)	WESTERN MEDICINE BOW  RANGE	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
236	-106.491667	41.206944	106	29	30	W	41	12	25	N	US	WY	Carbon	24000	Overlook Hill	Outcrop or artificial surface exposure	Pegmatite		Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"PLATT PROSPECT, MEDICINE BOW MOUNTAINS"	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
237	-106.250000	41.250000	106	15	0	W	41	15	0	N	US	WY	Albany	250000	Rawlins	Outcrop or artificial surface exposure	Gneiss	BANDED GNEISS	Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 30 minutes (~30 miles)	EASTERN MEDICINE BOW RANGE	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
238	-105.375000	41.158333	105	22	30	W	41	9	30	N	US	WY	Albany	62500	Sherman Mountains	Outcrop or artificial surface exposure	Granite	SHERMAN GRANITE	Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	VEDAUVOO CAMP GROUND	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
239	-109.425000	44.966667	109	25	30	W	44	58	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Pegmatite		Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHEASTERN BEARTOOTH RANGE	"Giletti, B.J., 1968, Isotopic Geochronology Of Montana and Wyoming ""In"" Hamilton, E.I., and Farquhar, R.M., eds., Radiometric Dating For Geologists: New York, Interscience Publishers, p. 111-146"	
240	-109.425000	44.966667	109	25	30	W	44	58	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Pegmatite		Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHEASTERN BEARTOOTH RANGE	"Giletti, B.J., 1968, Isotopic Geochronology Of Montana and Wyoming ""In"" Hamilton, E.I., and Farquhar, R.M., eds., Radiometric Dating For Geologists: New York, Interscience Publishers, p. 111-146"	
241	-109.466667	44.958333	109	28	0	W	44	57	30	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Pegmatite		Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHEASTERN BEARTOOTH RANGE	"Giletti, B.J., 1968, Isotopic Geochronology Of Montana and Wyoming ""In"" Hamilton, E.I., and Farquhar, R.M., eds., Radiometric Dating For Geologists: New York, Interscience Publishers, p. 111-146"	
242	-109.483333	44.958333	109	29	0	W	44	57	30	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Amphibolite		Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHEASTERN BEARTOOTH RANGE	"Giletti, B.J., 1968, Isotopic Geochronology Of Montana and Wyoming ""In"" Hamilton, E.I., and Farquhar, R.M., eds., Radiometric Dating For Geologists: New York, Interscience Publishers, p. 111-146"	
243	-109.183333	44.501389	109	11	0	W	44	30	5	N	US	WY	Park	62500	Cody	Outcrop or artificial surface exposure	Pegmatite		Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"SHOSHONE RIVER GORGE, CODY"	"Giletti, B.J., 1968, Isotopic Geochronology Of Montana and Wyoming ""In"" Hamilton, E.I., and Farquhar, R.M., eds., Radiometric Dating For Geologists: New York, Interscience Publishers, p. 111-146"	
244	-107.500000	44.783333	107	30	0	W	44	47	0	N	US	WY	Sheridan	24000	Skull Ridge	Float	Gneiss		Lamont (Columbia University)	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	NORTHERN BIGHORN RANGE	"Giletti, B.J., 1968, Isotopic Geochronology Of Montana and Wyoming ""In"" Hamilton, E.I., and Farquhar, R.M., eds., Radiometric Dating For Geologists: New York, Interscience Publishers, p. 111-146"	
245	-110.833333	43.666667	110	50	0	W	43	40	0	N	US	WY	Teton	24000	Grand Teton	Outcrop or artificial surface exposure	Gneiss	BRIGHT EYED GNEISS	"Lamont (Columbia University), Brown University"	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	"TETON RANGE, DEATH CANYON"	"Giletti, B.J., 1968, Isotopic Geochronology Of Montana and Wyoming ""In"" Hamilton, E.I., and Farquhar, R.M., eds., Radiometric Dating For Geologists: New York, Interscience Publishers, p. 111-146"	
246	-110.833333	43.666667	110	50	0	W	43	40	0	N	US	WY	Teton	24000	Grand Teton	Outcrop or artificial surface exposure	Pegmatite	PEGMATITE CUTS BRIGHT-EYED GNEISS	"Lamont (Columbia University), Brown University"	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	TETON RANGE	"Giletti, B.J., 1968, Isotopic Geochronology Of Montana and Wyoming ""In"" Hamilton, E.I., and Farquhar, R.M., eds., Radiometric Dating For Geologists: New York, Interscience Publishers, p. 111-146"	
247	-110.833333	43.750000	110	50	0	W	43	45	0	N	US	WY	Teton	Unk	(Not given)	Outcrop or artificial surface exposure	Pegmatite	PEGMATITE CUTS BRIGHT-EYED GNEISS	"Lamont (Columbia University), Brown University"	"Marvin, R.F."	74 07	Accurate to within 30 minutes (~30 miles)	TETON RANGE	"Giletti, B.J., 1968, Isotopic Geochronology Of Montana and Wyoming ""In"" Hamilton, E.I., and Farquhar, R.M., eds., Radiometric Dating For Geologists: New York, Interscience Publishers, p. 111-146"	
248	-110.833333	43.750000	110	50	0	W	43	45	0	N	US	WY	Teton	Unk	(Not given)	Outcrop or artificial surface exposure	Quartz monzonite		"Lamont (Columbia University), Brown University"	"Marvin, R.F."	74 07	Accurate to within 30 minutes (~30 miles)	TETON RANGE	"Giletti, B.J., 1968, Isotopic Geochronology Of Montana and Wyoming ""In"" Hamilton, E.I., and Farquhar, R.M., eds., Radiometric Dating For Geologists: New York, Interscience Publishers, p. 111-146"	
249	-110.350000	44.916667	110	21	0	W	44	55	0	N	US	WY	Park	62500	Tower Junction	Outcrop or artificial surface exposure	Tuff	"LOST CREEK TUFF MEMBER,  SEPULCHER FORMATION, WASHBURN GROUP (LATE WASATCHIAN OR EARLY BRIDGERIAN PROVINCIAL AGE)."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	"SPECIMEN RIDGE, YELLOWSTONE NATIONAL PARK"	"Smedes, H.W., and Prostka, H.J., 1972, Stratigraphic Framework Of The Absaroka Volcanic Supergroup In The Yellowstone National Park Region: U.S. Geological Survey Professional Paper 729C, p. C10."	
250	-110.050000	44.466667	110	3	0	W	44	28	0	N	US	WY	Park	62500	Eagle Peak	Outcrop or artificial surface exposure	Tuff	"PACIFIC CREEK TUFF MEMBER, TROUT PEAK TRACHYANDESITE, SUNLIGHT GROUP (A RHYODACITE WELDED ASH-FLOW TUFF); EARLY BRIDGERIAN PROVINCIAL AGE."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	"YELLOWSTONE NATIONAL PARK, ABSAROKA RANGE"	"Smedes, H.W., and Prostka, H.J., 1972, Stratigraphic Framework Of The Absaroka Volcanic Supergroup In The Yellowstone National Park Region: U.S. Geological Survey Professional Paper 729C, p. C10."	
251	-110.216667	44.100000	110	13	0	W	44	6	0	N	US	WY	Teton	62500	Two Ocean Pass	Outcrop or artificial surface exposure	Tuff	PUMICEOUS TUFF ABOUT 20 FEET BELOW THE TOP OF THE TWO OCEAN FORMATION	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	WEST OF THE FALCON CREEK-MINK CREEK DIVIDE	"Smedes, H.W., and Prostka, H.J., 1972, Stratigraphic Framework Of The Absaroka Volcanic Supergroup In The Yellowstone National Park Region: U.S. Geological Survey Professional Paper 729C, p. C10."	
252	-110.033333	43.733333	110	2	0	W	43	44	0	N	US	WY	Fremont	24000	Kisinger Lakes	Outcrop or artificial surface exposure	Ash	BENTONITIC ASH IN TEPEE TRAIL FORMATION	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	PINNACLE BUTTES AREA	"Smedes, H.W., and Prostka, H.J., 1972, Stratigraphic Framework Of The Absaroka Volcanic Supergroup In The Yellowstone National Park Region: U.S. Geological Survey Professional Paper 729C, p. C10."	
253	-110.033333	43.733333	110	2	0	W	43	44	0	N	US	WY	Fremont	24000	Kisinger Lakes	Outcrop or artificial surface exposure	Ash	"BENTONITE ASH, TEPEE TRAIL FORMATION"	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	PINNACLE BUTTES AREA	"Smedes, H.W., and Prostka, H.J., 1972, Stratigraphic Framework Of The Absaroka Volcanic Supergroup In The Yellowstone National Park Region: U.S. Geological Survey Professional Paper 729C, p. C10."	
254	-110.066667	43.758333	110	4	0	W	43	45	30	N	US	WY	Teton	24000	Togwotee Pass	Outcrop or artificial surface exposure	Tuff	"AIR-FALL TUFF, TEPEE TRAIL FORMATION"	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	1/2 MILE NORTHWEST OF TOGWOTEE PASS	"Smedes, H.W., and Prostka, H.J., 1972, Stratigraphic Framework Of The Absaroka Volcanic Supergroup In The Yellowstone National Park Region: U.S. Geological Survey Professional Paper 729C, p. C10."	
255	-109.950000	43.729167	109	57	0	W	43	43	45	N	US	WY	Fremont	24000	Kisinger Lakes	Outcrop or artificial surface exposure	Andesite	LAVA FLOW OR SILL AT THE BASE OF THE WIGGINS FORMATION	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	PINNACLE BUTTES AREA	"Smedes, H.W., and Prostka, H.J., 1972, Stratigraphic Framework Of The Absaroka Volcanic Supergroup In The Yellowstone National Park Region: U.S. Geological Survey Professional Paper 729C, p. C10."	
256	-109.950000	43.729167	109	57	0	W	43	43	45	N	US	WY	Fremont	24000	Kisinger Lakes	Outcrop or artificial surface exposure	Andesite	"BOULDER WITHIN A VOLCANIC MUDFLOW CONGLOMERATE, WIGGINS FORMATIONS."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	PINNACLE BUTTES AREA	"Smedes, H.W., and Prostka, H.J., 1972, Stratigraphic Framework Of The Absaroka Volcanic Supergroup In The Yellowstone National Park Region: U.S. Geological Survey Professional Paper 729C, p. C10."	
257	-109.950000	43.729167	109	57	0	W	43	43	45	N	US	WY	Fremont	24000	Kisinger Lakes	Outcrop or artificial surface exposure	Tuff	AIR-FALL TUFF ABOUT 800  FEET ABOVE THE BASE OF THE WIGGINS FORMATION.	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	PINNACLE BUTTES AREA	"Smedes, H.W., and Prostka, H.J., 1972, Stratigraphic Framework Of The Absaroka Volcanic Supergroup In The Yellowstone National Park Region: U.S. Geological Survey Professional Paper 729C, p. C10."	
258	-109.400000	43.716667	109	24	0	W	43	43	0	N	US	WY	Fremont	24000	Castle Rock	Outcrop or artificial surface exposure	Ash	"ASH BED 500 TO 600 FEET ABOVE BASE OF WIGGINS FORMATION, THOROFARE CREEK GROUP."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	WIGGINS FORK AREA	"Smedes, H.W., and Prostka, H.J., 1972, Stratigraphic Framework Of The Absaroka Volcanic Supergroup In The Yellowstone National Park Region: U.S. Geological Survey Professional Paper 729C, p. C10."	
259	-109.400000	43.716667	109	24	0	W	43	43	0	N	US	WY	Fremont	24000	Castle Rock	Outcrop or artificial surface exposure	Ash	"ASH BED 500 TO 600 FEET ABOVE THE  BASE OF THE WIGGINS FORMATION, THOROFARE CREEK GROUP."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	WIGGINS FORK AREA	"Smedes, H.W., and Prostka, H.J., 1972, Stratigraphic Framework Of The Absaroka Volcanic Supergroup In The Yellowstone National Park Region: U.S. Geological Survey Professional Paper 729C, p. C10."	
260	-109.400000	43.716667	109	24	0	W	43	43	0	N	US	WY	Fremont	24000	Castle Rock	Outcrop or artificial surface exposure	Vitrophyre	"LAVA FLOW ABOUT  800 FEET FROM THE BASE OF THE WIGGINS FORMATION, THOROFARE CREEK GROUP."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 5 minute (~5 miles)	WIGGINS FORK AREA	"Smedes, H.W., and Prostka, H.J., 1972, Stratigraphic Framework Of The Absaroka Volcanic Supergroup In The Yellowstone National Park Region: U.S. Geological Survey Professional Paper 729C, p. C10."	
261	-109.516667	44.958333	109	31	0	W	44	57	30	N	US	WY	Park	62500	Beartooth Butte	Outcrop or artificial surface exposure	Diabase	SAMPLE FROM CHILLED  MARGIN OF THE DIKE.  PYROXENE MAY HAVE CONVERTED TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH  MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
262	-109.375000	44.991667	109	22	30	W	44	59	30	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Diabase	FINE-GRAINED SAMPLE.   PYROXENE MAY HAVE CONVERTED TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
263	-109.408333	44.483333	109	24	30	W	44	29	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Diabase	SAMPLE IS FROM CHILLED MARGIN OF THE DIKE.  PYROXENE MAY HAVE CONCERTED TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
264	-109.420833	44.991667	109	25	15	W	44	59	30	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Diabase	SAMPLE IS FROM CHILLED MARGIN OF THE DIKE.  PYROXENE MAY HAVE CONVERTED TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
265	-109.500000	44.954167	109	30	0	W	44	57	15	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Diabase	SAMPLE IS FROM FINE-GRAINED DIKE.   PYROXENE MAY HAVE CONVERTED TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
266	-109.491667	44.950000	109	29	30	W	44	57	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Diabase	SAMPLE IS FROM CHILLED MARGIN OF THE DIKE.  PYROXENE MAY HAVE CONVERTED TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
267	-109.491667	44.950000	109	29	30	W	44	57	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Diabase	SAMPLE IS FROM FINE-GRAINED DIKE.    PYROXENE MAY HAVE CONVERTED TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS.   LOCATION ASSUMED TO BE SAME AS FOR RECORD NUMBER 0000266.	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
268	-109.458333	44.975000	109	27	30	W	44	58	30	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Diabase	SAMPLE IS FROM CHILLED MARGIN OF MAFIC INTRUSION.  PYROXENE MAY HAVE CONVERTED TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
269	-109.525000	44.970833	109	31	30	W	44	58	15	N	US	WY	Park	62500	Beartooth Butte	Outcrop or artificial surface exposure	Diabase	SAMPLE IS FROM FINE-GRAINED DIKE.  PYROXENE MAY HAVE CONVERTED TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH  MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
270	-109.579167	44.983333	109	34	45	W	44	59	0	N	US	WY	Park	62500	Beartooth Butte	Outcrop or artificial surface exposure	Diabase	SAMPLE FROM CHILLED MARGIN OF DIKE. PYROXENE MAY HAVE CONVERTED TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH  MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
271	-109.608333	44.991667	109	36	30	W	44	59	30	N	US	WY	Park	62500	Beartooth Butte	Outcrop or artificial surface exposure	Diabase	SAMPLE FROM CHILLED MARGIN OF DIKE. PYROXENE MAY HAVE CONVERTED TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH  MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
272	-109.608333	44.987500	109	36	30	W	44	59	15	N	US	WY	Park	62500	Beartooth Butte	Outcrop or artificial surface exposure	Diabase	SAMPLE FROM CHILLED MARGIN OF DIKE. PYROXENE MAY HAVE CONVERTED TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH  MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
273	-109.608333	44.983333	109	36	30	W	44	59	0	N	US	WY	Park	62500	Beartooth Butte	Outcrop or artificial surface exposure	Diabase	SAMPLE FROM CHILLED MARGIN OF DIKE. PYROXENE MAY HAVE CONVERTED TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH  MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
274	-109.475000	44.970833	109	28	30	W	44	58	15	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Diabase	SAMPLE COLLECTED FROM CHILLED BORDER.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
275	-109.441667	44.975000	109	26	30	W	44	58	30	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Diabase	SAMPLE COLLECTED FROM CHILLED BORDER.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
276	-109.562500	44.991667	109	33	45	W	44	59	30	N	US	WY	Park	62500	Beartooth Butte	Outcrop or artificial surface exposure	Diabase	SAMPLE COLLECTED FROM CHILLED DIKE BORDER.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH  MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
277	-109.566667	44.991667	109	34	0	W	44	59	30	N	US	WY	Park	62500	Beartooth Butte	Outcrop or artificial surface exposure	Diabase	SAMPLE COLLECTED FROM CHILLED DIKE BORDER.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH  MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
278	-109.575000	44.991667	109	34	30	W	44	59	30	N	US	WY	Park	62500	Beartooth Butte	Outcrop or artificial surface exposure	Diabase	SAMPLE COLLECTED FROM CHILLED DIKE BORDER.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH  MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
279	-109.425000	44.975000	109	25	30	W	44	58	30	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Diabase	SAMPLE COLLECTED FROM CHILLED DIKE BORDER.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
280	-109.433333	44.975000	109	26	0	W	44	58	30	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Dolerite	COARSE-GRAINED DIKE WITH LARGE MAGNETITE PHENOCRYSTS CUT BY ILMENITE LAMELLAE.	"University of Alberta, Rice University"	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Larson, E.E., Reynolds, R., and Hoblitt, R., 1973, New Virtual and Paleomagnetic Pole Positions From Isotopically Dated Precambrian Rocks In Wyoming, Montana, and Arizona: Their Significance In Establishing A North American Apparent Polar Wandering Path: Geological Society of America Bulletin, v. 84, p. 3231-3248."	"Their Significance In Establishing A North American Apparent Polar Wandering Path: Geological Society of America Bulletin, v. 84, p. 3231-3248."
281	-109.483333	44.950000	109	29	0	W	44	57	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Metadolerite	ROCK SHOWS SIGNS OF RE-CRYSTALIZATION.	Unk (original code was AB RI)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	BEARTOOTH MOUNTAINS	"Larson, E.E., Reynolds, R., and Hoblitt, R., 1973, New Virtual and Paleomagnetic Pole Positions From Isotopically Dated Precambrian Rocks In Wyoming, Montana, and Arizona: Their Significance In Establishing A North American Apparent Polar Wandering Path: Geological Society of America Bulletin, v. 84, p. 3231-3248."	"Their Significance In Establishing A North American Apparent Polar Wandering Path: Geological Society of America Bulletin, v. 84, p. 3231-3248."
282	-109.491667	44.950000	109	29	30	W	44	57	0	N	US	WY	Park	62500	Deep Lake	Outcrop or artificial surface exposure	Metadolerite	ROCK SHOWS SIGNS OF RE-CRYSTALIZATION.	Unk (original code was AB RI)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	BEARTOOTH MOUNTAINS	"Larson, E.E., Reynolds, R., and Hoblitt, R., 1973, New Virtual and Paleomagnetic Pole Positions From Isotopically Dated Precambrian Rocks In Wyoming, Montana, and Arizona: Their Significance In Establishing A North American Apparent Polar Wandering Path: Geological Society of America Bulletin, v. 84, p. 3231-3248."	"Their Significance In Establishing A North American Apparent Polar Wandering Path: Geological Society of America Bulletin, v. 84, p. 3231-3248."
283	-109.508333	44.941667	109	30	30	W	44	56	30	N	US	WY	Park	62500	Beartooth Butte	Outcrop or artificial surface exposure	Metadolerite	ROCK SHOWS SIGNS OF RE-CRYSTALLIZATION.	Unk (original code was AB RI)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	BEARTOOTH MOUNTAINS	"Larson, E.E., Reynolds, R., and Hoblitt, R., 1973, New Virtual and Paleomagnetic Pole Positions From Isotopically Dated Precambrian Rocks In Wyoming, Montana, and Arizona: Their Significance In Establishing A North American Apparent Polar Wandering Path: Geological Society of America Bulletin, v. 84, p. 3231-3248."	"Their Significance In Establishing A North American Apparent Polar Wandering Path: Geological Society of America Bulletin, v. 84, p. 3231-3248."
284	-109.633333	44.941667	109	38	0	W	44	56	30	N	US	WY	Park	62500	Beartooth Butte	Outcrop or artificial surface exposure	Dolerite	ROCK HAS LARGE MAGNETITE PHENOCRYSTS CUT BY ILMENITE LAMELLAE.	Unk (original code was AB RI)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	BEARTOOTH MOUNTAINS	"Larson, E.E., Reynolds, R., and Hoblitt, R., 1973, New Virtual and Paleomagnetic Pole Positions From Isotopically Dated Precambrian Rocks In Wyoming, Montana, and Arizona: Their Significance In Establishing A North American Apparent Polar Wandering Path: Geological Society of America Bulletin, v. 84, p. 3231-3248."	"Their Significance In Establishing A North American Apparent Polar Wandering Path: Geological Society of America Bulletin, v. 84, p. 3231-3248."
285	-109.600000	44.975000	109	36	0	W	44	58	30	N	US	WY	Park	62500	Beartooth Butte	Outcrop or artificial surface exposure	Dolerite	ROCK HAS LARGE MAGNETITE PHENOCRYSTS CUT BY ILMENTITE LAMELLAE.	Unk (original code was AB RI)	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	BEARTOOTH MOUNTAINS	"Larson, E.E., Reynolds, R., and Hoblitt, R., 1973, New Virtual and Paleomagnetic Pole Positions From Isotopically Dated Precambrian Rocks In Wyoming, Montana, and Arizona: Their Significance In Establishing A North American Apparent Polar Wandering Path: Geological Society of America Bulletin, v. 84, p. 3231-3248."	"Their Significance In Establishing A North American Apparent Polar Wandering Path: Geological Society of America Bulletin, v. 84, p. 3231-3248."
286	-97.958056	48.760000	97	57	29	W	48	45	36	N	US	ND	Cavalier	24000	Hanks Corner	Outcrop or artificial surface exposure	Bentonite	15-CM BENTONITE BED IN THE 'DIDYMOCERAS NEBRASCENSE' ZONE IS 8 METERS ABOVE THE BASE OF DEGREY MEMBER OF THE PIERRE SHALE	USGS Denver	"Marvin, R.F."	77 04	Accurate to within 1 minute (~1 mile)	"NW1/4 NE1/4 SEC. 24, T161N, R57W (INCORRECTLY LISTED AS IN WYOMING--COMPILER)"	"Obradovich, J.D., and Cobban, W.A., 1975, A Time-Scale For The Late Cretaceous Of The Western Interior Of North America 'In' Caldwell, W.G.E., ed., The Cretaceous System In The Western Interior Of North America, Geological Association of Canada, Special Paper No. 13, p. 31-54"	"'In' Caldwell, W.G.E., ed., The Cretaceous System In The Western Interior Of North America, Geological Association of Canada, Special Paper No. 13, p. 31-54"
287	-110.759444	43.980556	110	45	34	W	43	58	50	N	US	WY	Teton	24000	Ranger Peak	Outcrop or artificial surface exposure	Gneiss	"FINE-GRAINED, LIGHT GRAY, QUARTZ-PLAGIOCLASE GNEISS ADJACENT TO WEBB CANYON GNEISS."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 second (~100 feet)	"WEBB CANYON,  TETON RANGE.  ALTITUDE 8100 FEET, NORTH SIDE OF MOOSE CREEK, 1.7 MILES DUE EAST OF OWL PEAK."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
288	-110.758333	43.971389	110	45	30	W	43	58	17	N	US	WY	Teton	24000	Ranger Peak	Outcrop or artificial surface exposure	Gneiss	"WEBB CANYON GNEISS.  MEDIUM-GRAINED, STRONGLY FOLIATED HORNBLENDE- AND BIOTITE-BEARING QUARTZ MONZONITE GNEISS."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 second (~100 feet)	"WEBB CANYON, TETON RANGE.  ALTITUDE 7800 FEET, NORTH SIDE OF MOOSE CREEK, 1.85 MILES S 77 DEGREES E OF OWL PEAK."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
289	-110.756111	43.974722	110	45	22	W	43	58	29	N	US	WY	Teton	24000	Ranger Peak	Outcrop or artificial surface exposure	Gneiss	"WEBB CANYON GNEISS.  MEDIUM-TO FINE-GRAINED, VERY STRONGLY FOLIATED HORNBLENDE-AND BIOTITE-BEARING QUARTZ MONZONITE GNEISS."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 second (~100 feet)	"WEBB CANYON, TETON RANGE.  ALTITUDE 7700 FEET, NORTH SIDE OF MOOSE CREEK, 1.9 MILES S 83 DEGREES E OF OWL PEAK."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
290	-110.904722	43.918889	110	54	17	W	43	55	8	N	US	WY	Teton	24000	Rammel Mountain	Outcrop or artificial surface exposure	Gneiss	"WEBB CANYON GNEISS.  MEDIUM- TO COARSE-GRAINED, FOLIATED HORNBLENDE- AND  BIOTITE-BEARING QUARTZ MONZONITE GNEISS."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 second (~100 feet)	"TETON RANGE.  ALTITUDE 8400 FEET, SOUTHEAST SIDE OF BEAR CANYON, 1.1 MILES N 90 DEGREES W OF RAMMEL MOUNTAIN."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
291	-110.832500	43.856944	110	49	57	W	43	51	25	N	US	WY	Teton	24000	Mount Moran	Outcrop or artificial surface exposure	Gneiss	"WEBB CANYON GNEISS.  MEDIUM-GRAINED, FOLIATED HORNBLENDE- AND BIOTITE-BEARING QUARTZ MONZONITE GNEISS."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 second (~100 feet)	"TETON RANGE.  NEAR UPPER FORKS OF MORAN CANYON, 1.05 MILES N 89 DEGREES E OF WINDOW PEAK."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
292	-110.797222	43.831389	110	47	50	W	43	49	53	N	US	WY	Teton	24000	Mount Moran	Outcrop or artificial surface exposure	Gneiss	"WEBB CANYON GNEISS.  COARSE-GRAINED, FOLIATED BIOTITE-BEARING QUARTZ MONZONITE GNEISS."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 second (~100 feet)	"TETON RANGE.  ALTITUDE 10,600 FEET, FOOT OF NORTH WALL OF THOR PEAK, 0.15 MILES N 74 DEGREES W OF SUMMIT."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
293	-110.855556	43.597222	110	51	20	W	43	35	50	N	US	WY	Teton	24000	Teton Village	Outcrop or artificial surface exposure	Metagabbro	"RENDEZVOUS METAGABBRO.  COARSE-GRAINED, NONFOLIATED METAGABBRO."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 0.1 minute (~500 feet)	"TETON RANGE.  EAST SLOPES OF RENDEZVOUS MOUNTAIN, ABOUT 1.6 MILES N 65 DEGREES W FROM LOWER  TERMINOUS OF AERIAL TRAMWAY IN TETON VILLAGE."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
294	-110.855556	43.597222	110	51	20	W	43	35	50	N	US	WY	Teton	24000	Teton Village	Outcrop or artificial surface exposure	Metagabbro	"RENDEZVOUS METAGABBRO.  COARSE-GRAINED, NONFOLIATED METAGABBRO."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 0.1 minute (~500 feet)	"TETON RANGE.  EAST SLOPES OF RENDEZVOUS MOUNTAIN, ABOUT 1.6 MILES N 65 DEGREES W FROM LOWER  TERMINUS OF AERIAL TRAMWAY IN TETON VILLAGE."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
295	-110.855556	43.597222	110	51	20	W	43	35	50	N	US	WY	Teton	24000	Teton Village	Outcrop or artificial surface exposure	Metagabbro	"RENDEZVOUS METAGABBRO.  COARSE-GRAINED, NONFOLIATED METAGABBRO"	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 0.1 minute (~500 feet)	"TETON RANGE.  EAST SLOPES OF RENDEZVOUS MOUNTAIN, ABOUT 1.6 MILES N 65 DEGREES W FROM LOWER TERMINOUS OF AERIAL TRAMWAY IN TETON VILLAGE."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
296	-110.808889	43.853056	110	48	32	W	43	51	11	N	US	WY	Teton	24000	Mount Moran	Outcrop or artificial surface exposure	Quartz monzonite	"MOUNT OWEN QUARTZ MONZONITE.  FINE-GRAINED, BIOTITE QUARTZ MONZONITE."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 second (~100 feet)	"TETON RANGE.  ALTITUDE 7900 FEET, SOUTH SIDE OF MORAN CANYON, 1.7 MILES N 25 DEGREES W OF THOR PEAK."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
297	-110.745278	43.765833	110	44	43	W	43	45	57	N	US	WY	Teton	24000	Jenny Lake	Outcrop or artificial surface exposure	Quartz monzonite	MOUNT OWEN QUARTZ MONZONITE.  FINE-GRAINED BIOTITE QUARTZ MONZONITE CONTAINING TRACE OF MUSCOVITE.	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 second (~100 feet)	"TETON RANGE.  ALTITUDE 6950 FEET, SOUTH SIDE OF CASCADE CREEK, 0.15 MILES S 41 DEGREES W OF  DOCK ON WEST SIDE OF JENNY LAKE."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
298	-110.915000	43.881389	110	54	54	W	43	52	53	N	US	WY	Teton	24000	Granite Basin	Quarry	Quartz monzonite	MOUNT OWEN QUARTZ MONZONITE.  MEDIUM- TO COARSE-GRAINED BIOTITE QUARTZ MONZONITE; SOME ALTERATION OF PLAGIOCLASE AND BIOTITE.	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 second (~100 feet)	"TETON RANGE.  SMALL ABANDONED QUARRY IN TETON CANYON, 0.13 MILES S 59 DEGREES E OF WEST ENTRANCE TO TETON CAMPGROUND."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
299	-110.778056	43.667500	110	46	41	W	43	40	3	N	US	WY	Teton	24000	Mount Moran	Outcrop or artificial surface exposure	Quartz monzonite	"MOUNT OWEN QUARTZ MONZONITE.  FINE-GRAINED, VERY FAINTLY FOLIATED BIOTITE QUARTZ MONZONITE."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 second (~100 feet)	"ALTITUDE 8000 FEET,  SOUTH SIDE OF LEIGH CANYON, 1.2 MILES S 5 DEGREES W OF MOUNT MORAN, TETON RANGE."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
300	-110.834722	43.746944	110	50	5	W	43	44	49	N	US	WY	Teton	24000	Grand Teton	Outcrop or artificial surface exposure	Quartz monzonite	"MOUNT OWEN QUARTZ MONZONITE.  FINE-GRAINED, VERY FAINTLY FOLIATED BIOTITE QUARTZ MONZONITE (SLIGHT ALTERATION)."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 second (~100 feet)	"ALTITUDE 8880 FEET,  ALONG TRAIL IN SOUTH FORK OF CASCADE CANYON, 1.9 MILES DUE WEST OF MOUNT OWEN, TETON RANGE."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
301	-110.837778	43.738889	110	50	16	W	43	44	20	N	US	WY	Teton	24000	Grand Teton	Outcrop or artificial surface exposure	Quartz monzonite	"MOUNT OWEN QUARTZ MONZONITE.  MEDIUM-GRAINED, NONFOLIATED MUSCOVITE-BIOTITE QUARTZ MONZONITE, (SLIGHT ALTERATION)."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 second (~100 feet)	"ALTITUDE 9100 FEET,  ALONG TRAIL IN SOUTH FORK OF CASCADE CANYON, 1.8 MILES S 85 DEGREES W  OF GRAND TETON, TETON RANGE."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
302	-110.770000	43.830000	110	46	12	W	43	49	48	N	US	WY	Teton	24000	Mount Moran	Outcrop or artificial surface exposure	Amphibolite	"SAMPLE TAKEN FROM COARSE-GRAINED, FOLIATED AMPHIBOLITE OR METAGABBRO FROMING PODS AND DISCONTINUOUS LAYERS IN LAYERED BIOTITE GNEISSES 0.7 FEET N OF DIABASE DIKE."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"TETON RANGE.  EAST SIDE OF MOUNT MORAN AT 9700 FOOT ALTITUDE, 1.85 MILES S 65 DEGREES E OF SUMMIT."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
303	-110.770000	43.830000	110	46	12	W	43	49	48	N	US	WY	Teton	24000	Mount Moran	Outcrop or artificial surface exposure	Amphibolite	"SAMPLE TAKEN FROM COARSE-GRAINED, FOLIATED AMPHIBOLITE OR METAGABBRO FORMING PODS AND DISCONTINUOUS LAYERS IN LAYERED BIOTITE GNEISSES 2.0 FEET N OF DIABASE DIKE."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"TETON RANGE.  EAST SIDE OF MOUNT MORAN AT 9700 FOOT ALTITUDE, 1.85 MILES S 65 DEGREES E OF SUMMIT."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
304	-110.770000	43.830000	110	46	12	W	43	49	48	N	US	WY	Teton	24000	Mount Moran	Outcrop or artificial surface exposure	Amphibolite	"SAMPLE TAKEN FROM COARSE-GRAINED, FOLIATED AMPHIBOLITE OR METAGABBRO FORMING PODS AND DISCONTINUOUS LAYERS IN LAYERED BIOTITE GNEISSES 10 FEET NORTH OF DIABASE DIKE."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"TETON RANGE.  EAST SIDE OF MOUNT MORAN AT ALTITUDE 9700 FEET, 1.85 MILES S 65 DEGREES E OF SUMMIT."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
305	-110.770000	43.830000	110	46	12	W	43	49	48	N	US	WY	Teton	24000	Mount Moran	Outcrop or artificial surface exposure	Amphibolite	"SAMPLE TAKEN FROM COARSE-GRAINED, FOLIATED AMPHIBOLITE OR METAGABBRO FORMING PODS AND DISCONTINUOUS LAYERS IN LAYERED BIOTITE GNEISSES 20 FEET NORTH OF DIABASE DIKE."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"TETON RANGE.  EAST SIDE OF MOUNT MORAN AT ALTITUDE 9700 FEET, 1.85 MILES S 65 DEGREES E OF SUMMIT."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
306	-110.770000	43.830000	110	46	12	W	43	49	48	N	US	WY	Teton	24000	Mount Moran	Outcrop or artificial surface exposure	Gneiss	"SAMPLE TAKEN 5 FEET NORTH OF DIABASE DIKE FROM FINE-GRAINED, LIGHT-GRAY, RUDELY LAYERED BIOTITE GNEISS."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"TETON RANGE.  EAST SIDE OF MOUNT MORAN AT ALTITUDE 9700 FEET, 1.85 MILES S 65 DEGREES E OF SUMMIT."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
307	-110.770000	43.830000	110	46	12	W	43	49	48	N	US	WY	Teton	24000	Mount Moran	Outcrop or artificial surface exposure	Gneiss	"SAMPLE TAKEN 40 FT. NORTH OF DIABASE DIKE FROM FINE-GRAINED, LIGHT-GRAY, RUDELY LAYERED BIOTITE GNEISS."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"TETON RANGE.  EAST SIDE OF MOUNT MORAN AT ALTITUDE 9700 FEET, 1.85 MILES S 65 DEGREES E OF SUMMIT."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
308	-110.770000	43.830000	110	46	12	W	43	49	48	N	US	WY	Teton	24000	Mount Moran	Outcrop or artificial surface exposure	Gneiss	"SAMPLE TAKEN 100 FT NORTH OF DIABASE DIKE FROM FINE-GRAINED, LIGHT-GRAY, RUDELY LAYERED BIOTITE GNEISS."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"TETON RANGE.  EAST SIDE OF MOUNT MORAN AT ALTITUDE 9700 FEET, 1.85 MILES S 65 DEGREES E OF SUMMIT."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
309	-110.770000	43.830000	110	46	12	W	43	49	48	N	US	WY	Teton	24000	Mount Moran	Outcrop or artificial surface exposure	Diabase	"SAMPLE FROM APHANITIC CHILL ZONE, 0-0.2 FEET FROM NORTH WALL OF DIABASE DIKE.  ABUNDANT FLOW-ORIENTED PHENOCRYSTS OF PLAGIOCLASE AND PYROXENE."	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"TETON RANGE.  EAST SIDE OF MOUNT MORAN AT ALTITUDE 9700 FEET, 1.85 MILES S 65 DEGREES E OF SUMMIT."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
310	-110.770000	43.830000	110	46	12	W	43	49	48	N	US	WY	Teton	24000	Mount Moran	Outcrop or artificial surface exposure	Diabase	"SAMPLE FROM CENTER OF DIKE, COARSE-GRAINED"	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"TETON RANGE.  EAST SIDE OF MOUNT MORAN AT ALTITUDE 9700 FEET, 1.85 MILES S 65 DEGREES E OF SUMMIT."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
311	-110.742500	43.827500	110	44	33	W	43	49	39	N	US	WY	Teton	24000	Jenny Lake	Outcrop or artificial surface exposure	Diabase	SAMPLE FROM NEAR THE CENTER OF THE DIABASE DIKE	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 minute (~1 mile)	"TETON RANGE.  EAST FACE OF MOUNT MORAN AT ALTITUDE 8100 FEET, 1.8 MILE S 68 DEGREES W OF OUTLET OF BEARPAW LAKE."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
312	-110.758333	43.971389	110	45	30	W	43	58	17	N	US	WY	Teton	24000	Ranger Peak	Outcrop or artificial surface exposure	Pegmatite	SEGREGATION PEGMATITE IN WEBB CANYON GNEISS	USGS Denver	"Marvin, R.F."	74 07	Accurate to within 1 second (~100 feet)	"ALTITUDE 7800 FEET, NORTH SIDE OF MOOSE CREEK, 1.85 MILES S 77 DEGREES E OF OWL PEAK."	"Reed, J.C., Jr., and Zartman, R.E., 1973, Geochronology Of Precambrian Rocks Of The Teton Range, Wyoming: Geological Society of America Bulletin, v. 84, p. 561-582."	
313	-107.266667	42.783333	107	16	0	W	42	47	0	N	US	WY	Natrona	24000	Garfield Peak	Outcrop or artificial surface exposure	Rhyodacite	"A MEDIUM-GRAINED, COARSELY PORPHYRITIC ROCK.  PHENOCRYSTS--COMPRISING 43% OF THE ROCK--CONSIST MAINLY OF OLIGOCLASE (35%) AND OXYHORNBLENDE (7%) WITH ACCESSORY APATITE AND SPHENE."	USGS Denver	"Madden, C.T."	75 01	Accurate to within 1 second (~100 feet)	"CENTER S1/2 SE1/4 SEC. 33, T32N, R87W., SUMMIT OF GARFIELD PEAK, ELEVATION 8244 FEET."	"Pekarek, A.H., Marvin, R.F., and Mehnert, H.H., 1974, K-Ar Ages Of The Volcanics In The Rattlesnake Hills, Central Wyoming: Geology, v. 2, p. 283-285."	
314	-107.290278	42.711111	107	17	25	W	42	42	40	N	US	WY	Natrona	24000	Barlow Gap	Outcrop or artificial surface exposure	Phonolite	"DARK-GRAY PORPHYRITIC ROCK WITH 11% PHENOCRYSTS.  THE LATTER ARE EVENLY DIVIDED BETWEEN SODA SANIDINE AND THE FELDSPATHOIDS, HAUYNE AND NOSEAN, WITH MINOR ACCESSORY AEGIRINE."	USGS Denver	"Madden, C.T."	75 01	Accurate to within 1 second (~100 feet)	"SE1/4 SE1/4 SEC. 30, T32N, R87W, SUMMIT OF TSR KNOB, ELEVATION 7014 FEET."	"Pekarek, A.H., Marvin, R.F., and Mehnert, H.H., 1974, K-Ar Ages Of The Volcanics In The Rattlesnake Hills, Central Wyoming: Geology, v. 2, p. 283-285."	
315	-156.535556	57.873611	156	32	8	W	57	52	25	N	US	AK	(Not given)	63360	Ugashik D-2	Outcrop or artificial surface exposure	Granodiorite	WEAKLY PORPHYRITIC; ANHEDRAL QUARTZ IN HYPIDIOMORPHIC-GRANULAR MATRIX; INTERSTITIAL K-FELDSPAR; PLAGIOCLASE SLIGHTLY SERICITIZED	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKAN PENINSULA; SOUTH SIDE OF BECHAROF LAKE.	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
316	-156.443889	58.035000	156	26	38	W	58	2	6	N	US	AK	(Not given)	63360	Naknek A-2	Outcrop or artificial surface exposure	Granodiorite	"FINE GRAINED; ALLOTRIOMORPHIC-GRANULAR, FOLIATED, BIOTITE-BEARING APLITIC DIKE THAT CUTS HORNBLENDE GABBRO; BIOTITE IS DEEP REDDISH-BROWN"	USGS Menlo Park	"Madden, C.T."	75 06	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
317	-155.475000	58.539722	155	28	30	W	58	32	23	N	US	AK	(Not given)	63360	Mount Katmai C-5	Outcrop or artificial surface exposure	Granodiorite	HYPIDIOMORPHIC-GRANULAR; INTERSTITIAL K-FELDSPAR; SERICITIZED PLAGIOCLASE; BIOTITE ALTERED TO IRON-RICH CHLORITE	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
318	-155.397500	58.685000	155	23	51	W	58	41	6	N	US	AK	(Not given)	63360	Mount Katmai C-5	Outcrop or artificial surface exposure	Granodiorite	HYPIDIOMORPHIC-GRANULAR; INTERSTITIAL K-FELDSPAR; SLIGHT SERICITIZATION OF PLAGIOCLASE; MINOR ALTERATION OF BIOTITE; NO HORNBLENDE	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
319	-154.891111	58.860000	154	53	28	W	58	51	36	N	US	AK	(Not given)	63360	Mount Katmai D-3	Outcrop or artificial surface exposure	Quartz diorite	MEDIUM- TO COARSE-GRAINED; HYPIDIOMORPHIC-GRANULAR; CHLORITIZED BIOTITE; HORNBLENDE PARTIALLY CHLORITIZED; SERICITIZED PLAGIOCLASE; SLIGHT CATACLASIS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
320	-154.845000	58.903611	154	50	42	W	58	54	13	N	US	AK	(Not given)	63360	Mount Katmai D-3	Outcrop or artificial surface exposure	Granodiorite	SERIATE; HORNBLENDE AND BIOTITE PARTIALLY ALTERED TO CHLORITE; MINOR EPIDOTE; SMALL DIORITIC INCLUSIONS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
321	-154.582778	58.871111	154	34	58	W	58	52	16	N	US	AK	(Not given)	63360	Mount Katmai D-2	Outcrop or artificial surface exposure	Granodiorite	SERIATE; MODERATE CATACLASIS; MINOR HORNBLENDE PARTIALLY ALTERED TO EPIDOTE; SLIGHT SERICITIZATION OF PLAGIOCLASE	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
322	-154.658611	59.052778	154	39	31	W	59	3	10	N	US	AK	(Not given)	63360	Iliamna A-4	Outcrop or artificial surface exposure	Quartz diorite	"MEDIUM- TO FINE-GRAINED; HYPIDIOMORPHIC GRANULAR, PLAGIOCLASE CORES ARE SERICITIZED; HORNBLENDE PARTIALLY ALTERED TO EPIDOTE; BIOTITE SLIGHTLY CHLORITIZED"	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
323	-154.490556	59.268056	154	29	26	W	59	16	5	N	US	AK	(Not given)	63360	Iliamna B-4	Outcrop or artificial surface exposure	Gabbro	"MEDIUM- TO FINE-GRAINED, ANHEDRAL HORNBLENDE IN A MATRIX OF SUBHEDRAL PLAGIOCLASE AND LATE MAGNETITE"	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
324	-154.304167	59.300000	154	18	15	W	59	18	0	N	US	AK	(Not given)	63360	Iliamna B-4	Outcrop or artificial surface exposure	Quartz diorite	HYPIDIOMORPHIC-GRANULAR	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
325	-157.450556	59.341667	157	27	2	W	59	20	30	N	US	AK	(Not given)	63360	Iliamna B-4	Outcrop or artificial surface exposure	Quartz diorite	WEAKLY PORPHYRITIC; ANHEDRAL QUARTZ LIES IN HYPIDIOMORPHIC-GRANULAR MATRIX	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
326	-154.466389	59.374722	154	27	59	W	59	22	29	N	US	AK	(Not given)	63360	Iliamna B-4	Outcrop or artificial surface exposure	Quartz diorite	"SERIATE, FOLIATED"	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
327	-154.308889	59.397222	154	18	32	W	59	23	50	N	US	AK	(Not given)	63360	Iliamna B-4	Outcrop or artificial surface exposure	Quartz diorite	"SERIATE, FOLIATED"	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
328	-153.847500	59.730556	153	50	51	W	59	43	50	N	US	AK	(Not given)	63360	Iliamna C-3	Outcrop or artificial surface exposure	Hornblendite	"VERY COARSE-GRAINED, PANIDIOMORPHIC-GRANULAR; CUT BY QUARTZ DIORITE; OLDEST PLUTONIC ROCK IN THE AREA"	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
329	-153.700000	59.701389	153	42	0	W	59	42	5	N	US	AK	(Not given)	63360	Iliamna C-2	Outcrop or artificial surface exposure	Quartz diorite	"SERIATE, FOLIATED; MAGNETITE IS A COMMON ACCESSORY"	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
330	-153.645000	59.773333	153	38	42	W	59	46	24	N	US	AK	(Not given)	63360	Iliamna D-3	Outcrop or artificial surface exposure	Diorite	HYPIDIOMORPHIC-GRANULAR; POIKILITIC HORNBLENDE ENCLOSES OPAQUE GRANULES; VERY LITTLE ALTERATION; HIGH COLOR INDEX	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
331	-153.915556	59.767778	153	54	56	W	59	46	4	N	US	AK	(Not given)	63360	Iliamna D-3	Outcrop or artificial surface exposure	Granodiorite	"SERIATE, SERICITIZED PLAGIOCLASE; INTERSTITIAL K-FELDSPAR; WEAKLY FOLIATED; SPHENE, CHLORITE AND EPIDOTE COMMON ACCESSORIES"	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
332	-153.858056	59.846111	153	51	29	W	59	50	46	N	US	AK	(Not given)	63360	Iliamna D-3	Outcrop or artificial surface exposure	Quartz diorite	"SERIATE, FAINT FOLIATION; SLIGHT SERICITIZATION OF PLAGIOCLASE CORES; MINOR HORNBLENDE ALTERED TO EPIDOTE; SLIGHT CATACLASIS; INTERSTITIAL K-FELDSPAR"	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
333	-153.745000	59.883889	153	44	42	W	59	53	2	N	US	AK	(Not given)	63360	Iliamna D-3	Outcrop or artificial surface exposure	Quartz diorite	"SERIATE, FAINT FOLIATION; EPIDOTE IS COMMON ACCESSORY"	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
334	-153.607778	59.920278	153	36	28	W	59	55	13	N	US	AK	(Not given)	63360	Iliamna D-2	Outcrop or artificial surface exposure	Granodiorite(?)	HYPIDIOMORPHIC-GRANULAR; EXTENSIVE ALBITIZATION AND SERICITIZATION; FAINT FOLIATION; SMALL BOOKS OF MUSCOVITE; MINOR EPIDOTE; NO MAFIC MINERALS IN MODE	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
335	-152.886111	60.252778	152	53	10	W	60	15	10	N	US	AK	(Not given)	63360	Kenai A-8	Outcrop or artificial surface exposure	Granodiorite	"SERIATE, EXTENSIVE SERICITIZATION OF PLAGIOCLASE; BIOTITE AND HORNBLENDE SLIGHTLY CHLORITIZED; MAFIC INCLUSIONS"	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
336	-154.245833	59.804444	154	14	45	W	59	48	16	N	US	AK	(Not given)	63360	Iliamna D-4	Outcrop or artificial surface exposure	Quartz monzonite	"COARSE-GRAINED; WEAKLY PORPHYRITIC; SUBHEDRAL POIKILITIC PERTHITE SURROUNDS PLAGIOCLASE, QUARTZ, AND HORNBLENDE; TWO GENERATIONS OF PLAGIOCLASE.  KNUTSON BAY INTRUSIVE"	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	"ALASKA PENINSULA, NORTH OF ILIAMNA LAKE"	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
337	-154.207222	59.827222	154	12	26	W	59	49	38	N	US	AK	(Not given)	63360	Iliamna D-4	Outcrop or artificial surface exposure	Quartz diorite	HYPIDIOMORPHIC-GRANULAR; INTERSTITIAL K-FELDSPAR; NO BIOTITE; SPHENE AND APATITE COMMON ACCESSORIES	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
338	-154.170000	60.041111	154	10	12	W	60	2	28	N	US	AK	(Not given)	63360	Lake Clark A-4	Outcrop or artificial surface exposure	Quartz monzonite	WEAKLY PORPHYRITIC; K-FELDSPAR IS INTERSTITIAL AND MAY RIM PLAGIOCLASE PHENOCRYSTS; MANY SMALL DIORITIC INCLUSIONS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
339	-154.069444	60.138889	154	4	10	W	60	8	20	N	US	AK	(Not given)	63360	Lake Clark A-3	Outcrop or artificial surface exposure	Granodiorite	MEDIUM- TO FINE-GRAINED; HYPIDIOMORPHIC-GRANULAR; PLAGIOCLASE SLIGHTLY SERICITIZED; INTERSTITIAL PERTHITE; MINOR EPIDOTE	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
340	-153.609444	60.415556	153	36	34	W	60	24	56	N	US	AK	(Not given)	63360	Lake Clark B-2	Outcrop or artificial surface exposure	Quartz monzonite	MERRILL PASS SEQUENCE. COARSE GRAINED; WEAKLY PORPHYRITIC; PERTHITE BOTH INTERSTITIAL AND IN ANHEDRAL CLOTS; INCLUSIONS OF QUARTZ DIORITE AND METAVOLCANIC ROCK; BIOTITE SLIGHTLY CHLORITIZED	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
341	-156.443889	58.035000	156	26	38	W	58	2	6	N	US	AK	(Not given)	63360	Naknek A-2	Outcrop or artificial surface exposure	Gabbro	"SERIATE, SLIGHTLY FOLIATED"	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
342	-153.800000	61.136111	153	48	0	W	61	8	10	N	US	AK	(Not given)	63360	Lime Hills A-3	Outcrop or artificial surface exposure	Granodiorite	FINE-GRAINED; HYPIDIOMORPHIC-GRANULAR; PLAGIOCLASE SLIGHTLY SERICITIZED; BROWNISH RED BIOTITE	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
343	-152.618889	61.216667	152	37	8	W	61	13	0	N	US	AK	(Not given)	63360	Tyonek A-7	Outcrop or artificial surface exposure	Quartz diorite	"SERIATE; WELL FOLIATED, EXTENSIVE CATACLASIS, SOME GRANOBLASTIC MORTAR TEXTURE; POIKILITIC HORNBLENDE ENCLOSES GRANULES OF PLAGIOCLASE; CUT BY APLITIC DIKES"	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
344	-152.382222	61.210556	152	22	56	W	61	12	38	N	US	AK	(Not given)	63360	Tyonek A-7	Outcrop or artificial surface exposure	Quartz monzonite	CRYSTAL CREEK SEQUENCE OF ROCKS. FINE- TO MEDIUM-GRAINED; ALLOTRIOMORPHIC-GRANULAR; LEUCOCRATIC; SLIGHT CATACLASIS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
345	-152.142778	61.032778	152	8	34	W	61	1	58	N	US	AK	(Not given)	63360	Tyonek A-6	Outcrop or artificial surface exposure	Quartz diorite	SUMMIT LAKE ROCKS.  HYPIDIOMORPHIC-GRANULAR; SOMEWHAT FOLIATED; STRONG PROGRESSIVE ZONING IN PLAGIOCLASE; MAGNETITE IS A COMMON ACCESSORY	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
346	-152.355556	60.803611	152	21	20	W	60	48	13	N	US	AK	(Not given)	63360	Kenai D-7	Outcrop or artificial surface exposure	Quartz monzonite	HYPIDIOMORPHIC-GRANULAR; INTERSTITIAL PERTHITE; DARK BROWN; SERICITIZED PLAGIOCLASE; CUTS METAVOLCANIC ROCK	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKAN PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
347	-151.477222	61.095000	151	28	38	W	61	5	42	N	US	AK	(Not given)	63360	Tyonek A-4	Core or cutting	Quartz diorite	HYPIDIOMORPHIC-GRANULAR; MODERATE CATACLASIS; SLIGHT SERICITIZATION OF PLAGIOCLASE CORES; THIN QUARTZ-EPIDOTE-CALCITE FILLED SHEAR FRACTURES	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	"ALASKA PENINSULA; E/2 SE/4 SW/4 SEC. 30, T12N, R12W;  7,452-7,459 FOOT INTERVAL;  PAN AMERICAN STEDATNA CREEK NO. 1 WELL"	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
348	-150.743611	61.463333	150	44	37	W	61	27	48	N	US	AK	(Not given)	63360	Tyonek B-2	Outcrop or artificial surface exposure	Granodiorite	"HYPIDIOMORPHIC GRANULAR, SOMEWHAT FOLIATED; CHLORITIZED BIOTITE; SLIGHT SERICITIZATION OF PLAGIOCLASE"	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Age and Chemistry Of Mesozoic and Tertiary Plutonic Rocks In South-Central Alaska: Geological Society of America Bulletin, v. 80, p. 23-44"	
349	-154.765278	58.854722	154	45	55	W	58	51	17	N	US	AK	(Not given)	63360	Mount Katmai D-3	Outcrop or artificial surface exposure	Quartz diorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
350	-154.729167	58.828889	154	43	45	W	58	49	44	N	US	AK	(Not given)	63360	Mount Katmai D-3	Outcrop or artificial surface exposure	Granodiorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
351	-154.629167	58.807500	154	37	45	W	58	48	27	N	US	AK	(Not given)	63360	Mount Katmai D-2	Outcrop or artificial surface exposure	Granodiorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
352	-154.582778	58.918333	154	34	58	W	58	55	6	N	US	AK	(Not given)	63360	Mount Katmai D-2	Outcrop or artificial surface exposure	Quartz diorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
353	-154.548611	58.974167	154	32	55	W	58	58	27	N	US	AK	(Not given)	63360	Mount Katmai D-2	Outcrop or artificial surface exposure	Quartz diorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
354	-154.633889	59.401389	154	38	2	W	59	24	5	N	US	AK	(Not given)	63360	Iliamna B-5	Outcrop or artificial surface exposure	Quartz diorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
355	-154.448333	59.420833	154	26	54	W	59	25	15	N	US	AK	(Not given)	63360	Iliamna B-4	Outcrop or artificial surface exposure	Quartz diorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
356	-154.322222	59.376944	154	19	20	W	59	22	37	N	US	AK	(Not given)	63360	Iliamna B-4	Outcrop or artificial surface exposure	Quartz diorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
357	-152.780000	60.590556	152	46	48	W	60	35	26	N	US	AK	(Not given)	63360	Kenai C-8	Outcrop or artificial surface exposure	Granodiorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
358	-152.627778	60.614167	152	37	40	W	60	36	51	N	US	AK	(Not given)	63360	Kenai C-8	Outcrop or artificial surface exposure	Quartz diorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
359	-152.450833	60.675833	152	27	3	W	60	40	33	N	US	AK	(Not given)	63360	Kenai C-7	Outcrop or artificial surface exposure	Granodiorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
360	-153.405278	60.598889	153	24	19	W	60	35	56	N	US	AK	(Not given)	63360	Lake Clark C-2	Outcrop or artificial surface exposure	Granodiorite	SUMMIT LAKE ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
361	-153.158611	60.642222	153	9	31	W	60	38	32	N	US	AK	(Not given)	63360	Lake Clark C-1	Outcrop or artificial surface exposure	Quartz diorite	SUMMIT LAKE ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
362	-153.538889	60.723056	153	32	20	W	60	43	23	N	US	AK	(Not given)	63360	Lake Clark C-2	Outcrop or artificial surface exposure	Granodiorite	MERRILL PASS SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
363	-153.336111	60.767500	153	20	10	W	60	46	3	N	US	AK	(Not given)	63360	Lake Clark D-1	Outcrop or artificial surface exposure	Granodiorite	MERRILL PASS SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
364	-153.279722	60.705556	153	16	47	W	60	42	20	N	US	AK	(Not given)	63360	Lake Clark C-1	Outcrop or artificial surface exposure	Granodiorite	MERRILL PASS SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
365	-153.102500	60.737222	153	6	9	W	60	44	14	N	US	AK	(Not given)	63360	Lake Clark C-1	Outcrop or artificial surface exposure	Quartz diorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
366	-152.958333	60.742778	152	57	30	W	60	44	34	N	US	AK	(Not given)	63360	Kenai C-8	Outcrop or artificial surface exposure	Granodiorite	SUMMIT LAKE ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
367	-152.811111	60.748611	152	48	40	W	60	44	55	N	US	AK	(Not given)	63360	Kenai C-8	Outcrop or artificial surface exposure	Diorite	SUMMIT LAKE ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
368	-152.581944	60.832222	152	34	55	W	60	49	56	N	US	AK	(Not given)	63360	Kenai D-7	Outcrop or artificial surface exposure	Quartz diorite	SUMMIT LAKE ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
369	-152.492222	60.805000	152	29	32	W	60	48	18	N	US	AK	(Not given)	63360	Kenai D-7	Outcrop or artificial surface exposure	Diorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
370	-152.679722	60.865000	152	40	47	W	60	51	54	N	US	AK	(Not given)	63360	Kenai D-8	Outcrop or artificial surface exposure	Granodiorite	SUMMIT LAKE ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
371	-152.861389	60.943056	152	51	41	W	60	56	35	N	US	AK	(Not given)	63360	Kenai D-8	Outcrop or artificial surface exposure	Granodiorite	SUMMIT LAKE ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
372	-153.031389	60.886944	153	1	53	W	60	53	13	N	US	AK	(Not given)	63360	Lake Clark D-1	Outcrop or artificial surface exposure	Granodiorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
373	-153.415000	60.867778	153	24	54	W	60	52	4	N	US	AK	(Not given)	63360	Lake Clark D-2	Outcrop or artificial surface exposure	Granodiorite	MERRILL PASS SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
374	-153.582222	60.838333	153	34	56	W	60	50	18	N	US	AK	(Not given)	63360	Lake Clark D-2	Outcrop or artificial surface exposure	Quartz monzonite	MERRILL PASS SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
375	-153.545556	60.946944	153	32	44	W	60	56	49	N	US	AK	(Not given)	63360	Lake Clark D-2	Outcrop or artificial surface exposure	Granodiorite	MERRILL PASS SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
376	-153.345556	60.929722	153	20	44	W	60	55	47	N	US	AK	(Not given)	63360	Lake Clark D-1	Outcrop or artificial surface exposure	Quartz monzonite	MERRILL PASS SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
377	-153.206667	61.072222	153	12	24	W	61	4	20	N	US	AK	(Not given)	63360	Lime Hills A-1	Outcrop or artificial surface exposure	Quartz monzonite	MERRILL PASS SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
378	-152.831944	61.083333	152	49	55	W	61	5	0	N	US	AK	(Not given)	63360	Tyonek A-8	Outcrop or artificial surface exposure	Quartz diorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
379	-152.396389	61.008889	152	23	47	W	61	0	32	N	US	AK	(Not given)	63360	Tyonek A-7	Outcrop or artificial surface exposure	Quartz diorite	SUMMIT LAKE ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
380	-152.279722	60.985556	152	16	47	W	60	59	8	N	US	AK	(Not given)	63360	Kenai D-7	Outcrop or artificial surface exposure	Quartz diorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKAN PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
381	-152.481944	61.102222	152	28	55	W	61	6	8	N	US	AK	(Not given)	63360	Tyonek A-7	Outcrop or artificial surface exposure	Quartz diorite	SUMMIT LAKE ROCKS	USGS Menlo Park	"Marvin, R.F."	75 07	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
382	-152.094444	61.162222	152	5	40	W	61	9	44	N	US	AK	(Not given)	63360	Tyonek A-6	Outcrop or artificial surface exposure	Granodiorite	SUMMIT LAKE ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
383	-152.025000	61.291111	152	1	30	W	61	17	28	N	US	AK	(Not given)	63360	Tyonek B-6	Outcrop or artificial surface exposure	Quartz monzonite	CRYSTAL CREEK SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
384	-152.513333	61.243889	152	30	48	W	61	14	38	N	US	AK	(Not given)	63360	Tyonek A-7	Outcrop or artificial surface exposure	Quartz monzonite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
385	-152.576667	61.331944	152	34	36	W	61	19	55	N	US	AK	(Not given)	63360	Tyonek B-7	Outcrop or artificial surface exposure	Quartz monzonite	CRYSTAL CREEK SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
386	-152.742500	61.340833	152	44	33	W	61	20	27	N	US	AK	(Not given)	63360	Tyonek B-8	Outcrop or artificial surface exposure	Quartz diorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
387	-152.703889	61.306111	152	42	14	W	61	18	22	N	US	AK	(Not given)	63360	Tyonek B-8	Outcrop or artificial surface exposure	Granodiorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
388	-152.763889	61.260833	152	45	50	W	61	15	39	N	US	AK	(Not given)	63360	Tyonek B-8	Outcrop or artificial surface exposure	Granodiorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
389	-152.918056	61.211111	152	55	5	W	61	12	40	N	US	AK	(Not given)	63360	Tyonek A-8	Outcrop or artificial surface exposure	Quartz monzonite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
390	-153.300000	61.203889	153	18	0	W	61	12	14	N	US	AK	(Not given)	63360	Lime Hills A-1	Outcrop or artificial surface exposure	Quartz monzonite	MERRILL PASS SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
391	-153.298333	61.286667	153	17	54	W	61	17	12	N	US	AK	(Not given)	63360	Lime Hills B-1	Outcrop or artificial surface exposure	Quartz monzonite	MERRILL PASS SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
392	-153.669167	61.256944	153	40	9	W	61	15	25	N	US	AK	(Not given)	63360	Lime Hills B-2	Outcrop or artificial surface exposure	Quartz monzonite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
393	-153.845833	61.282500	153	50	45	W	61	16	57	N	US	AK	(Not given)	63360	Lime Hills B-3	Outcrop or artificial surface exposure	Quartz monzonite	QUARTZ MONZONITE OF TIRED PUP	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
394	-154.050000	61.405000	154	3	0	W	61	24	18	N	US	AK	(Not given)	63360	Lime Hills B-3	Outcrop or artificial surface exposure	Quartz monzonite	QUARTZ MONZONITE OF TIRED PUP	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
395	-153.910833	61.484722	153	54	39	W	61	29	5	N	US	AK	(Not given)	63360	Lime Hills B-3	Outcrop or artificial surface exposure	Granodiorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
396	-153.687500	61.409167	153	41	15	W	61	24	33	N	US	AK	(Not given)	63360	Lime Hills B-2	Outcrop or artificial surface exposure	Quartz monzonite	SNOWCAP SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
397	-153.615556	61.381111	153	36	56	W	61	22	52	N	US	AK	(Not given)	63360	Lime Hills B-2	Outcrop or artificial surface exposure	Granodiorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
398	-153.247222	61.395278	153	14	50	W	61	23	43	N	US	AK	(Not given)	63360	Lime Hills B-1	Outcrop or artificial surface exposure	Quartz monzonite	MERRILL PASS SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
399	-153.233333	61.460000	153	14	0	W	61	27	36	N	US	AK	(Not given)	63360	Lime Hills B-1	Outcrop or artificial surface exposure	Granodiorite	MERRILL PASS SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
400	-153.072778	61.431667	153	4	22	W	61	25	54	N	US	AK	(Not given)	63360	Lime Hills B-1	Outcrop or artificial surface exposure	Quartz monzonite	CRYSTAL CREEK SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
401	-152.945000	61.365000	152	56	42	W	61	21	54	N	US	AK	(Not given)	63360	Tyonek B-8	Outcrop or artificial surface exposure	Quartz monzonite	CRYSTAL CREEK SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
402	-152.940278	61.439167	152	56	25	W	61	26	21	N	US	AK	(Not given)	63360	Tyonek B-8	Outcrop or artificial surface exposure	Quartz monzonite	CRYSTAL CREEK SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
403	-152.633333	61.457778	152	38	0	W	61	27	28	N	US	AK	(Not given)	63360	Tyonek B-8	Outcrop or artificial surface exposure	Granite	CRYSTAL CREEK SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
404	-152.411111	61.406111	152	24	40	W	61	24	22	N	US	AK	(Not given)	63360	Tyonek B-7	Outcrop or artificial surface exposure	Syenite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
405	-151.955000	61.425000	151	57	18	W	61	25	30	N	US	AK	(Not given)	63360	Tyonek B-6	Outcrop or artificial surface exposure	Quartz monzonite	CRYSTAL CREEK SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
406	-152.012500	61.497778	152	0	45	W	61	29	52	N	US	AK	(Not given)	63360	Tyonek B-6	Outcrop or artificial surface exposure	Quartz monzonite	CRYSTAL CREEK SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
407	-152.083333	61.666667	152	5	0	W	61	40	0	N	US	AK	(Not given)	63360	Tyonek C-6	Outcrop or artificial surface exposure	Quartz monzonite	CRYSTAL CREEK SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
408	-152.922500	61.705278	152	55	21	W	61	42	19	N	US	AK	(Not given)	63360	Tyonek C-8	Outcrop or artificial surface exposure	Granodiorite	GRANODIORITE OF MOUNT ESTELLE	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
409	-153.073611	61.068333	153	4	25	W	61	4	6	N	US	AK	(Not given)	63360	Lime Hills C-1	Outcrop or artificial surface exposure	Granodiorite	GRANODIORITE OF MOUNT ESTELLE	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
410	-153.012500	61.558056	153	0	45	W	61	33	29	N	US	AK	(Not given)	63360	Lime Hills C-1	Outcrop or artificial surface exposure	Quartz monzonite	CRYSTAL CREEK SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
411	-153.350000	61.574167	153	21	0	W	61	34	27	N	US	AK	(Not given)	63360	Lime Hills C-1	Outcrop or artificial surface exposure	Syenite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
412	-153.661111	61.627778	153	39	40	W	61	37	40	N	US	AK	(Not given)	63360	Lime Hills C-2	Outcrop or artificial surface exposure	Granodiorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
413	-153.819444	61.614722	153	49	10	W	61	36	53	N	US	AK	(Not given)	63360	Lime Hills C-3	Outcrop or artificial surface exposure	Quartz monzonite	QUARTZ MONZONITE OF TIRED PUP	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
414	-153.828611	61.681944	153	49	43	W	61	40	55	N	US	AK	(Not given)	63360	Lime Hills C-3	Outcrop or artificial surface exposure	Quartz monzonite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
415	-154.119444	61.709444	154	7	10	W	61	42	34	N	US	AK	(Not given)	63360	Lime Hills C-3	Outcrop or artificial surface exposure	Quartz monzonite	QUARTZ MONZONITE OF TIRED PUP	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
416	-153.863889	61.747778	153	51	50	W	61	44	52	N	US	AK	(Not given)	63360	Lime Hills C-3	Outcrop or artificial surface exposure	Quartz monzonite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
417	-153.838333	61.812500	153	50	18	W	61	48	45	N	US	AK	(Not given)	63360	Lime Hills D-3	Outcrop or artificial surface exposure	Granite(?)		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
418	-153.736111	61.910556	153	44	10	W	61	54	38	N	US	AK	(Not given)	63360	Lime Hills D-2	Outcrop or artificial surface exposure	Granite(?)		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
419	-153.485000	61.888889	153	29	6	W	61	53	20	N	US	AK	(Not given)	63360	Lime Hills D-2	Outcrop or artificial surface exposure	Granodiorite	HARTMAN SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
420	-153.405556	61.824167	153	24	20	W	61	49	27	N	US	AK	(Not given)	63360	Lime Hills D-2	Outcrop or artificial surface exposure	Granodiorite	MERRILL PASS SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
421	-152.896667	61.901944	152	53	48	W	61	54	7	N	US	AK	(Not given)	63360	Tyonek D-8	Outcrop or artificial surface exposure	Quartz monzonite	GRANODIORITE OF MOUNT ESTELLE	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
422	-152.450000	62.076667	152	27	0	W	62	4	36	N	US	AK	(Not given)	63360	"Talkeetna, A-5"	Outcrop or artificial surface exposure	Diorite	YENTNA SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
423	-152.916667	62.063333	152	55	0	W	62	3	48	N	US	AK	(Not given)	63360	"Talkeetna, A-6"	Outcrop or artificial surface exposure	Granodiorite	GRANODIORITE OF MOUNT ESTELLE	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
424	-153.993333	61.946389	153	59	36	W	61	56	47	N	US	AK	(Not given)	63360	Lime Hills D-3	Outcrop or artificial surface exposure	Granite	WINDY FORK PLUTON	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
425	-154.140556	62.025833	154	8	26	W	62	1	33	N	US	AK	(Not given)	63360	McGrath A-3	Outcrop or artificial surface exposure	Granite	WINDY FORK PLUTON	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
426	-154.090833	62.055000	154	5	27	W	62	3	18	N	US	AK	(Not given)	63360	McGrath A-3	Outcrop or artificial surface exposure	Granite	WINDY FORK PLUTON	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
427	-154.423611	62.226389	154	25	25	W	62	13	35	N	US	AK	(Not given)	63360	McGrath A-3	Outcrop or artificial surface exposure	Quartz monzonite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
428	-154.718056	62.514722	154	43	5	W	62	30	53	N	US	AK	(Not given)	63360	McGrath C-4	Outcrop or artificial surface exposure	Granite(?)		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
429	-153.668056	62.423611	153	40	5	W	62	25	25	N	US	AK	(Not given)	63360	McGrath B-2	Outcrop or artificial surface exposure	Granodiorite		USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
430	-152.785833	62.236667	152	47	9	W	62	14	12	N	US	AK	(Not given)	63360	"Talkeetna, A-6"	Outcrop or artificial surface exposure	Quartz monzonite	YENTNA SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
431	-152.813333	62.442500	152	48	48	W	62	26	33	N	US	AK	(Not given)	63360	"Talkeetna, B-6"	Outcrop or artificial surface exposure	Quartz monzonite	MCKINLEY SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
432	-152.188333	62.531111	152	11	18	W	62	31	52	N	US	AK	(Not given)	63360	"Talkeetna, C-5"	Outcrop or artificial surface exposure	Granodiorite	YENTNA SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
433	-151.545278	62.602222	151	32	43	W	62	36	8	N	US	AK	(Not given)	63360	"Talkeetna, C-4"	Outcrop or artificial surface exposure	Quartz monzonite	MCKINLEY SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
434	-151.174444	62.710278	151	10	28	W	62	42	37	N	US	AK	(Not given)	63360	"Talkeetna, C-3"	Outcrop or artificial surface exposure	Quartz monzonite	MCKINLEY SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
435	-150.607222	62.700556	150	36	26	W	62	42	2	N	US	AK	(Not given)	63360	"Talkeetna, C-2"	Outcrop or artificial surface exposure	Quartz monzonite	MCKINLEY SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
436	-150.572222	62.898611	150	34	20	W	62	53	55	N	US	AK	(Not given)	63360	"Talkeetna, D-2"	Outcrop or artificial surface exposure	Quartz monzonite	MCKINLEY SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
437	-150.397222	62.998056	150	23	50	W	62	59	53	N	US	AK	(Not given)	63360	"Talkeetna, D-1"	Outcrop or artificial surface exposure	Quartz monzonite	MCKINLEY SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
438	-150.903333	62.937500	150	54	12	W	62	56	15	N	US	AK	(Not given)	63360	"Talkeetna, D-2"	Outcrop or artificial surface exposure	Quartz monzonite	MCKINLEY SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
439	-151.414722	63.005278	151	24	53	W	63	0	19	N	US	AK	(Not given)	63360	Mount McKinley A-3	Outcrop or artificial surface exposure	Granodiorite	GRANODIORITE OF MOUNT FORAKER	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
440	-151.573889	62.873889	151	34	26	W	62	52	26	N	US	AK	(Not given)	63360	"Talkeetna, D-4"	Outcrop or artificial surface exposure	Granodiorite	GRANODIORITE OF MOUNT FORAKER	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
441	-151.655556	62.818611	151	39	20	W	62	49	7	N	US	AK	(Not given)	63360	"Talkeetna, D-4"	Outcrop or artificial surface exposure	Granodiorite	GRANODIORITE OF MOUNT FORAKER	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
442	-151.786944	62.886667	151	47	13	W	62	53	12	N	US	AK	(Not given)	63360	"Talkeetna, D-4"	Outcrop or artificial surface exposure	Quartz diorite	GRANODIORITE OF MOUNT FORAKER	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
443	-152.152778	62.797222	152	9	10	W	62	47	50	N	US	AK	(Not given)	63360	"Talkeetna, D-5"	Outcrop or artificial surface exposure	Granodiorite	GRANODIORITE OF MOUNT FORAKER	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
444	-152.201944	62.836944	152	12	7	W	62	50	13	N	US	AK	(Not given)	63360	"Talkeetna, D-5"	Outcrop or artificial surface exposure	Quartz monzonite	MCKINLEY SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
445	-151.452778	63.079167	151	27	10	W	63	4	45	N	US	AK	(Not given)	63360	Mount McKinley A-3	Outcrop or artificial surface exposure	Granite	MCKINLEY SEQUENCE OF ROCKS	USGS Menlo Park	"Madden, C.T."	74 11	Accurate to within 1 second (~100 feet)		"Reed, B.L., and Lanphere, M.A., 1969, Alaska-Aleutian Range Batholith: Geological Society of America Bulletin, v. 80, p. 2583-2610."	
446	-154.765278	58.854722	154	45	55	W	58	51	17	N	US	AK	(Not given)	63360	Mount Katmai D-3	Outcrop or artificial surface exposure	Quartz diorite		USGS Menlo Park	"Marvin, R.F."	75 07	Accurate to within 1 second (~100 feet)	ALASKAN PENINSULA	"Reed, B.L., and Lanphere, M.A., 1972, Generalized Geologic Map Of The Alaska-Aleutian Range Batholith Showing Potassium-Argon Ages Of The Plutonic Rocks: U.S. Geological Survey Miscellaneous Field Studies Map Mf-372"	
447	-154.729167	58.828889	154	43	45	W	58	49	44	N	US	AK	(Not given)	63360	Mount Katmai D-3	Outcrop or artificial surface exposure	Granodiorite		USGS Menlo Park	"Marvin, R.F."	75 07	Accurate to within 1 second (~100 feet)	ALASKAN PENINSULA	"Reed, B.L., and Lanphere, M.A., 1972, Generalized Geologic Map Of The Alaska-Aleutian Range Batholith Showing Potassium-Argon Ages Of The Plutonic Rocks: U.S. Geological Survey Miscellaneous Field Studies Map Mf-372"	
448	-154.629167	58.807500	154	37	45	W	58	48	27	N	US	AK	(Not given)	63360	Mount Katmai D-2	Outcrop or artificial surface exposure	Granodiorite		USGS Menlo Park	"Marvin, R.F."	75 07	Accurate to within 1 second (~100 feet)	ALASKAN PENINSULA	"Reed, B.L., and Lanphere, M.A., 1972, Generalized Geologic Map Of The Alaska-Aleutian Range Batholith Showing Potassium-Argon Ages Of The Plutonic Rocks: U.S. Geological Survey Miscellaneous Field Studies Map Mf-372"	
449	-154.582778	58.918333	154	34	58	W	58	55	6	N	US	AK	(Not given)	63360	Mount Katmai D-2	Outcrop or artificial surface exposure	Quartz diorite		USGS Menlo Park	"Marvin, R.F."	75 07	Accurate to within 1 second (~100 feet)	ALASKAN PENINSULA	"Reed, B.L., and Lanphere, M.A., 1972, Generalized Geologic Map Of The Alaska-Aleutian Range Batholith Showing Potassium-Argon Ages Of The Plutonic Rocks: U.S. Geological Survey Miscellaneous Field Studies Map Mf-372"	
450	-154.548611	58.974167	154	32	55	W	58	58	27	N	US	AK	(Not given)	63360	Mount Katmai D-2	Outcrop or artificial surface exposure	Quartz diorite		USGS Menlo Park	"Marvin, R.F."	75 07	Accurate to within 1 second (~100 feet)	ALASKAN PENINSULA	"Reed, B.L., and Lanphere, M.A., 1972, Generalized Geologic Map Of The Alaska-Aleutian Range Batholith Showing Potassium-Argon Ages Of The Plutonic Rocks: U.S. Geological Survey Miscellaneous Field Studies Map Mf-372"	
451	-154.633889	59.401389	154	38	2	W	59	24	5	N	US	AK	(Not given)	63360	Iliamna B-5	Outcrop or artificial surface exposure	Quartz diorite		USGS Menlo Park	"Marvin, R.F."	75 07	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1972, Generalized Geologic Map Of The Alaska-Aleutian Range Batholith Showing Potassium-Argon Ages Of The Plutonic Rocks: U.S. Geological Survey Miscellaneous Field Studies Map Mf-372"	
452	-154.448333	59.420833	154	26	54	W	59	25	15	N	US	AK	(Not given)	63360	Iliamna B-4	Outcrop or artificial surface exposure	Quartz diorite		USGS Menlo Park	"Marvin, R.F."	75 07	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1972, Generalized Geologic Map Of The Alaska-Aleutian Range Batholith Showing Potassium-Argon Ages Of The Plutonic Rocks: U.S. Geological Survey Miscellaneous Field Studies Map Mf-372"	
453	-154.322222	59.376944	154	19	20	W	59	22	37	N	US	AK	(Not given)	63360	Iliamna B-4	Outcrop or artificial surface exposure	Quartz diorite		USGS Menlo Park	"Marvin, R.F."	75 07	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1972, Generalized Geologic Map Of The Alaska-Aleutian Range Batholith Showing Potassium-Argon Ages Of The Plutonic Rocks: U.S. Geological Survey Miscellaneous Field Studies Map Mf-372"	
454	-152.780000	60.590556	152	46	48	W	60	35	26	N	US	AK	(Not given)	63360	Kenai C-8	Outcrop or artificial surface exposure	Granodiorite		USGS Menlo Park	"Marvin, R.F."	75 07	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1972, Generalized Geologic Map Of The Alaska-Aleutian Range Batholith Showing Potassium-Argon Ages Of The Plutonic Rocks: U.S. Geological Survey Miscellaneous Field Studies Map Mf-372"	
455	-152.627778	60.614167	152	37	40	W	60	36	51	N	US	AK	(Not given)	63360	Kenai C-8	Outcrop or artificial surface exposure	Quartz diorite		USGS Menlo Park	"Marvin, R.F."	75 07	Accurate to within 1 second (~100 feet)	ALASKA PENINSULA	"Reed, B.L., and Lanphere, M.A., 1972, Generalized Geologic Map Of The Alaska-Aleutian Range Batholith Showing Potassium-Argon Ages Of The Plutonic Rocks: U.S. Geological Survey Miscellaneous Field Studies Map Mf-372"	
456	-118.821667	37.626389	118	49	18	W	37	37	35	N	US	CA	Mono	62500	Mount Morrison	Outcrop or artificial surface exposure	Vitrophyre	RHYOLITE VITROPHYRE FROM RHYOLITE-OBSIDIAN DOME	USGS Menlo Park	"Dobson, S.W."	78 09	Accurate to within 1 minute (~1 mile)	"SW1/4 SEC. 6, T4S, R29E; NEAR WHITMORE HOT SPRINGS"	"Doell, R.R., Dalrymple, G.B., and Cox, A., 1966, Geomagnetic Polarity Epochs: Sierra Nevada Data, 3: Journal of Geophysical Research, v. 71, no. 2, p. 531-541."	
457	-120.166667	39.333333	120	10	0	W	39	20	0	N	US	CA	Nevada	24000	Truckee	Outcrop or artificial surface exposure	Latite	DENSE HOLOCRYSTALLINE OLIVINE LATITE; POLARIS OLIVINE LATITE	USGS Menlo Park	"Dobson, S.W."	78 09	Accurate to within 1 minute (~1 mile)	"SW1/4 SE1/4 SEC. 11, T17N, R16E; WEST OF POLARIS"	"Doell, R.R., Dalrymple, G.B., and Cox, A., 1966, Geomagnetic Polarity Epochs: Sierra Nevada Data, 3: Journal of Geophysical Research, v. 71, no. 2, p. 531-541."	
458	-120.088056	39.218889	120	5	17	W	39	13	8	N	US	CA	Placer	24000	Kings Beach	Outcrop or artificial surface exposure	Andesite	LOWER ANDESITE; DENSE FINE-GRAINED HOLOCRYSTALLINE FELDSPATHIC ANDESITE WITH SPARSE HYPERSTHENE PHENOCRYSTS	USGS Menlo Park	"Dobson, S.W."	78 09	Accurate to within 1 minute (~1 mile)	"NE1/4 SE1/4 SEC. 21, T16N, R17E; AT WATSON CREEK"	"Doell, R.R., Dalrymple, G.B., and Cox, A., 1966, Geomagnetic Polarity Epochs: Sierra Nevada Data, 3: Journal of Geophysical Research, v. 71, no. 2, p. 531-541."	
459	-113.840278	38.618056	113	50	25	W	38	37	5	N	US	UT	Millard	250000	Richfield	Outcrop or artificial surface exposure	Ignimbrite	"HIGHLY WELDED, CRYSTAL VITRIC IGNIMBRITE, WAH WAH MEMBER, NEEDLES RANGE FORMATION"	Yale	"Madden, C.T."	75 07	Accurate to within 1 minute (~1 mile)	HIGHWAY 21 ROADCUT NORTH OF NEEDLES RANGE	"Armstrong, R.L., 1966, K-Ar Dating Using Neutron Activation For Ar Analysis: Granitic Plutons Of The Eastern Great Basin, Nevada and Utah: Geochimica Et Cosmochimica Acta, v. 30, p. 565-600."	
460	-118.996944	37.609722	118	59	49	W	37	36	35	N	US	CA	Mono	62500	Mount Morrison	Outcrop or artificial surface exposure	Basalt	DENSE HOLOCRYSTALLINE PORPHYRITIC OLIVINE BASALT; MAMMOTH MINE BASALT	USGS Menlo Park	"Dobson, S.W."	78 09	Accurate to within 1 minute (~1 mile)	"SW1/4 SE1/4 SEC. 9, T4S, R27E; NEAR MAMMOTH MINE"	"Doell, R.R., Dalrymple, G.B., and Cox, A., 1966, Geomagnetic Polarity Epochs: Sierra Nevada Data, 3: Journal of Geophysical Research, v. 71, no. 2, p. 531-541."	
461	-118.581111	37.753611	118	34	52	W	37	45	13	N	US	CA	Mono	62500	Glass Mountain	Outcrop or artificial surface exposure	Basalt	DENSE HOLOCRYSTALLINE OLIVINE BASALT; BENTON RANGE BASALT	USGS Menlo Park	"Dobson, S.W."	78 09	Accurate to within 1 minute (~1 mile)	"SE1/4 SW1/4 SEC. 20, T2S, R31E; BENTON RANGE"	"Doell, R.R., Dalrymple, G.B., and Cox, A., 1966, Geomagnetic Polarity Epochs: Sierra Nevada Data, 3: Journal of Geophysical Research, v. 71, no. 2, p. 531-541."	
462	-119.082500	37.373333	119	4	57	W	37	22	24	N	US	CA	Fresno	62500	Kaiser Peak	Outcrop or artificial surface exposure	Basalt	PORPHYRITIC HOLOCRYSTALLINE OLIVINE BASALT; FOUR FORKS CREEK BASALT	USGS Menlo Park	"Dobson, S.W."	78 09	Accurate to within 1 minute (~1 mile)	1500 METERS S47E FROM BM 7069; SE OF FOUR FORKS CREEK	"Doell, R.R., Dalrymple, G.B., and Cox, A., 1966, Geomagnetic Polarity Epochs: Sierra Nevada Data, 3: Journal of Geophysical Research, v. 71, no. 2, p. 531-541."	
463	-120.000000	37.500000	120	0	0	W	37	30	0	N	US	CA	Mariposa	250000	Mariposa and San Jose	Outcrop or artificial surface exposure	Schist	"MARAPOSITE SCHIST COMPOSED OF MAGNESITE, FUCHSITE, QUARTZ, AND PYRITE"	"Shell Research Center, Houston"	"Dobson, S.W."	78 09	Accurate to within 30 minutes (~30 miles)	LOCATION VERY INDEFINITE --COMPILER	"Edwards, G., and Mclaughlin, W.A., 1972, Shell List No.1 - K-Ar and Rb-Sr Age Determinations Of California, Nevada and Utah Rocks and Minerals: Isochron/West, No. 3, p. 1-7."	
464	-113.208333	39.997500	113	12	30	W	39	59	51	N	US	UT	Tooele	24000	Dugway Range NW	Core or cutting	Tuff	MEDIUM-GRAINED QUARTZ AND ORTHOCLASE ANHEDRA IN A CRYPTOCRYSTALLINE MATRIX	"Shell Research Center, Houston"	"Dobson, S.W."	78 09	Accurate to within 1 minute (~1 mile)	"SEC. 33, T9S, R12W; DUGWAY RANGE; BOTTOM-HOLE SAMPLE FROM DRILL HOLE"	"Edwards, G., and Mclaughlin, W.A., 1972, Shell List No.1 - K-Ar and Rb-Sr Age Determinations Of California, Nevada and Utah Rocks and Minerals: Isochron/West, No. 3, p. 1-7."	
465	-115.558333	39.250000	115	33	30	W	39	15	0	N	US	NV	White Pine	62500	Green Springs	Outcrop or artificial surface exposure	Granodiorite	"MEDIUM-GRANINED BIOTITE GRANODIORITE, SELIGMAN STOCK"	Yale	"Madden, C.T."	75 07	Accurate to within 1 minute (~1 mile)	"SILVER BELL MINE CANYON, MOUNT HAMILTON"	"Armstrong, R.L., 1966, K-Ar Dating Using Neutron Activation For Ar Analysis: Granitic Plutons Of The Eastern Great Basin, Nevada and Utah: Geochimica Et Cosmochimica Acta, v. 30, p. 565-600."	
466	-113.208333	39.998056	113	12	30	W	39	59	53	N	US	UT	Tooele	24000	Dugway Range NW	Core or cutting	Trachyte	PORPHYRITIC TRACHYTE; MICROPERTHITIC PHENOCRYSTS OF PLAGIOCLASE IN A MATRIX OF ORTHOCLASE MICROLITE	"Shell Research Center, Houston"	"Dobson, S.W."	78 09	Accurate to within 1 minute (~1 mile)	"SEC. 33, T9S, R12W; DUGWAY RANGE; BOTTOM-HOLE SAMPLE FROM DRILL HOLE"	"Edwards, G., and Mclaughlin, W.A., 1972, Shell List No.1 - K-Ar and Rb-Sr Age Determinations Of California, Nevada and Utah Rocks and Minerals: Isochron/West, No. 3, p. 1-7."	
467	-113.208333	39.998611	113	12	30	W	39	59	55	N	US	UT	Tooele	24000	Dugway Range NW	Core or cutting	Granite	"FINE-GRAINED; ORTHOCLASE, QUARTZ, AND BIOTITE"	"Shell Research Center, Houston"	"Dobson, S.W."	78 09	Accurate to within 1 minute (~1 mile)	"SEC. 33, T9S, R12W; DUGWAY RANGE; BOTTOM-HOLE SAMPLE FROM DRILL HOLE"	"Edwards, G., and Mclaughlin, W.A., 1972, Shell List No.1 - K-Ar and Rb-Sr Age Determinations Of California, Nevada and Utah Rocks and Minerals: Isochron/West, No. 3, p. 1-7."	
468	-113.208333	39.996944	113	12	30	W	39	59	49	N	US	UT	Tooele	24000	Dugway Range NW	Core or cutting	Granodiorite	BIOTITE GRANODIORITE	"Shell Research Center, Houston"	"Dobson, S.W."	78 09	Accurate to within 1 minute (~1 mile)	"SEC. 33, T9S, R12W; DUGWAY RANGE; BOTTOM-HOLE SAMPLE FROM DRILL HOLE"	"Edwards, G., and Mclaughlin, W.A., 1972, Shell List No.1 - K-Ar and Rb-Sr Age Determinations Of California, Nevada and Utah Rocks and Minerals: Isochron/West, No. 3, p. 1-7."	
469	-119.188333	38.043889	119	11	18	W	38	2	38	N	US	CA	Mono	62500	Bodie	Outcrop or artificial surface exposure	Quartz monzonite	QUARTZ MONZONITE PORPHYRY	USGS Menlo Park	"Dobson, S.W."	78 09	Accurate to within 1 minute (~1 mile)	"SW1/4 SEC. 11, T2N, R25E"	"Kleinhampl, F.J., Davis, W.E., Silberman, M.L., Chesterman, C.W., Chapman, R.H., and Gray, C.H., Jr., 1975, Aeromagnetic and Limited Gravity Studies and Generalized Geology Of The Bodie Hills Region, Nevada and California: U.S. Geological Survey Bulletin 1384, p. 6-7"	"U.S. Geological Survey Bulletin 1384, p. 6-7"
470	-119.153889	38.093333	119	9	14	W	38	5	36	N	US	CA	Mono	62500	Bodie	Outcrop or artificial surface exposure	Andesite	PORPHYRITIC ANDESITE FLOW	USGS Menlo Park	"Dobson, S.W."	78 09	Accurate to within 1 minute (~1 mile)	"NW1/4 SEC. 30, T3N, R26E, BODIE MINING DISTRICT, BODIE HILLS"	"Kleinhampl, F.J., Davis, W.E., Silberman, M.L., Chesterman, C.W., Chapman, R.H., and Gray, C.H., Jr., 1975, Aeromagnetic and Limited Gravity Studies and Generalized Geology Of The Bodie Hills Region, Nevada and California: U.S. Geological Survey Bulletin 1384, p. 6-7"	"U.S. Geological Survey Bulletin 1384, p. 6-7"
471	-113.813889	39.847222	113	48	50	W	39	50	50	N	US	UT	Juab	250000	Delta	Outcrop or artificial surface exposure	Adamellite porphyry	"MEDIUM-GRAINED BIOTITE ADAMELLITE PORPHYRY, IBAPAH STOCK"	Yale	"Madden, C.T."	75 07	Accurate to within 1 minute (~1 mile)	"INDIAN FARM CANYON, DEEP CREEK MOUNTAINS"	"Armstrong, R.L., 1966, K-Ar Dating Using Neutron Activation For Ar Analysis: Granitic Plutons Of The Eastern Great Basin, Nevada and Utah: Geochimica Et Cosmochimica Acta, v. 30, p. 565-600."	
472	-119.166667	38.126389	119	10	0	W	38	7	35	N	US	CA	Mono	62500	Bodie	Outcrop or artificial surface exposure	Basalt	BASALT FLOW	USGS Menlo Park	"Dobson, S.W."	78 09	Accurate to within 1 minute (~1 mile)	"NORTH BORDER OF SEC. 13, T3N, R25E, BODIE MINING DISTRICT, BODIE HILLS"	"Kleinhampl, F.J., Davis, W.E., Silberman, M.L., Chesterman, C.W., Chapman, R.H., and Gray, C.H., Jr., 1975, Aeromagnetic and Limited Gravity Studies and Generalized Geology Of The Bodie Hills Region, Nevada and California: U.S. Geological Survey Bulletin 1384, p. 6-7"	"U.S. Geological Survey Bulletin 1384, p. 6-7"
473	-108.066667	32.791667	108	4	0	W	32	47	30	N	US	NM	Grant	24000	Santa Rita	Outcrop or artificial surface exposure	Intrusive	MINERALIZED ROCK	University of Minnesota	"Dobson, S.W."	78 09	Accurate to within 5 minute (~5 miles)	CHINO DISTRICT (LOCATION NOT DEFINITE --COMPILER)	"Schwartz, G.M., 1959, Hydrothermal alteration:  Economic Geology, v. 54, p. 161-183"	
474	-119.064444	38.099722	119	3	52	W	38	5	59	N	US	CA	Mono	62500	Bodie	Outcrop or artificial surface exposure	Tuff	BIOTITE-AUGITE LATITE TUFF	USGS Menlo Park	"Dobson, S.W."	78 09	Accurate to within 1 minute (~1 mile)	"SW1/4 SW1/4 SEC. 24, T3N, R26E, NORTH OF MONO LAKE"	"Dalrymple, G.B., Cox, A., Doell, R.R., and Gromme, C.S., 1967, Pliocene Geomagnetic Polarity Epochs: Earth and Planetary Science Letters, v. 2, p. 163-173."	
475	-119.200278	38.130556	119	12	1	W	38	7	50	N	US	CA	Mono	62500	Bodie	Outcrop or artificial surface exposure	Tuff	BIOTITE-AUGITE LATITE TUFF	USGS Menlo Park	"Dobson, S.W."	78 09	Accurate to within 0.1 minute (~500 feet)	"ROADCUT ON HWY. 395, 600 FT. DUE SOUTH OF BM 7594; NORTH OF CONWAY SUMMIT"	"Dalrymple, G.B., Cox, A., Doell, R.R., and Gromme, C.S., 1967, Pliocene Geomagnetic Polarity Epochs: Earth and Planetary Science Letters, v. 2, p. 163-173."	
476	-120.724722	41.478889	120	43	29	W	41	28	44	N	US	CA	Modoc	62500	Alturas	Outcrop or artificial surface exposure	Tuff	WELDED TUFF FROM THE LOWER UNIT OF THE ALTURAS FORMATION	USGS Menlo Park	"Dobson, S.W."	78 09	Accurate to within 0.1 minute (~500 feet)	"NW CORNER OF SE1/4 SEC. 17, T42N, R11E; 30 METERS SOUTH OF HWY. 299 AT ELEV. 4480 FT."	"Dalrymple, G.B., Cox, A., Doell, R.R., and Gromme, C.S., 1967, Pliocene Geomagnetic Polarity Epochs: Earth and Planetary Science Letters, v. 2, p. 163-173."	
477	-120.511944	39.855278	120	30	43	W	39	51	19	N	US	CA	Plumas	24000	Blairsden	Outcrop or artificial surface exposure	Andesite	HORNBLENDE ANDESITE INTRUSION	USGS Menlo Park	"Dobson, S.W."	78 09	Accurate to within 1 minute (~1 mile)	"NE1/4 SE1/4 SEC. 16 AND SW1/4 SEC. 15, T23N, R13E; NE OF BLAIRSDEN"	"Dalrymple, G.B., Cox, A., Doell, R.R., and Gromme, C.S., 1967, Pliocene Geomagnetic Polarity Epochs: Earth and Planetary Science Letters, v. 2, p. 163-173."	
478	-120.482778	40.206389	120	28	58	W	40	12	23	N	US	CA	Plumas	62500	Milford	Outcrop or artificial surface exposure	Basalt	HYPERSTHENE BASALT FLOW OF STONY RIDGE	USGS Menlo Park	"Dobson, S.W."	78 09	Accurate to within 0.1 minute (~500 feet)	"SE1/4 SW1/4 SEC. 11, T27N, R16E AT VABM 6998 (SHOULD BE R13E --COMPILER)"	"Dalrymple, G.B., Cox, A., Doell, R.R., and Gromme, C.S., 1967, Pliocene Geomagnetic Polarity Epochs: Earth and Planetary Science Letters, v. 2, p. 163-173."	
479	-119.778056	38.369167	119	46	41	W	38	22	9	N	US	CA	Tuolumne	62500	Dardanelles Cone	Outcrop or artificial surface exposure	Basalt	BASALT FLOW OF BALD PEAK (REFERENCE ALSO IDENTIFIES SAMPLE AS LATITE --COMPILER)	USGS Menlo Park	"Marvin, R.F."	78 11	Accurate to within 0.1 minute (~500 feet)	9200 FT. ELEV. ON SOUTH RIDGE OF BALD PEAK	"Dalrymple, G.B., Cox, A., Doell, R.R., and Gromme, C.S., 1967, Pliocene Geomagnetic Polarity Epochs: Earth and Planetary Science Letters, v. 2, p. 163-173."	
480	-111.615278	40.580556	111	36	55	W	40	34	50	N	US	UT	Salt Lake	24000	Brighton	Outcrop or artificial surface exposure	Granodiorite	"MEDIUM-GRAINED BIOTITE HORNBLENDE GRANODIORITE, ALTA STOCK"	Yale	"Madden, C.T."	75 07	Accurate to within 1 minute (~1 mile)	1 MILE SOUTH-EAST OF ALTA	"Armstrong, R.L., 1966, K-Ar Dating Using Neutron Activation For Ar Analysis: Granitic Plutons Of The Eastern Great Basin, Nevada and Utah: Geochimica Et Cosmochimica Acta, v. 30, p. 565-600."	
481	-111.658333	40.583333	111	39	30	W	40	35	0	N	US	UT	Salt Lake	24000	Brighton	Outcrop or artificial surface exposure	Granodiorite	"MEDIUM-GRAINED HORNBLENDE-BIOTITE GRANODIORITE, COTTONWOOD STOCK"	Yale	"Madden, C.T."	75 07	Accurate to within 1 minute (~1 mile)	"1 AND 1/2 MILES WEST-SOUTHWEST OF ALTA, COTTONWOOD CANYON, WASATCH MOUNTAINS"	"Armstrong, R.L., 1966, K-Ar Dating Using Neutron Activation For Ar Analysis: Granitic Plutons Of The Eastern Great Basin, Nevada and Utah: Geochimica Et Cosmochimica Acta, v. 30, p. 565-600."	
482	-119.778056	38.369167	119	46	41	W	38	22	9	N	US	CA	Tuolumne	62500	Dardanelles Cone	Outcrop or artificial surface exposure	Basalt	BASALT FLOW OF BALD PEAK (REFERENCE ALSO IDENTIFIES SAMPLE AS LATITE --COMPILER)	USGS Menlo Park	"Dobson, S.W."	78 09	Accurate to within 0.1 minute (~500 feet)	9200 FT. ELEV. ON SOUTH RIDGE OF BALD PEAK	"Dalrymple, G.B., Cox, A., Doell, R.R., and Gromme, C.S., 1967, Pliocene Geomagnetic Polarity Epochs: Earth and Planetary Science Letters, v. 2, p. 163-173."	
483	-167.458056	60.213056	167	27	29	W	60	12	47	N	US	AK	(Not given)	63360	Nunivak Island A-7	Outcrop or artificial surface exposure	Basalt		USGS Menlo Park	"Dobson, S.W."	78 09	Accurate to within 1 minute (~1 mile)	"NORTHWEST COAST, IKOOK POINT AT SEA LEVEL, NUNIVAK ISLAND"	"Dalrymple, G.B., Cox, A., Doell, R.R., and Gromme, C.S., 1967, Pliocene Geomagnetic Polarity Epochs: Earth and Planetary Science Letters, v. 2, p. 163-173."	
484	-113.206944	37.745833	113	12	25	W	37	44	45	N	US	UT	Iron	24000	Cedar City NW	Outcrop or artificial surface exposure	Granodiorite porphyry	"MEDIUM-GRAINED HORNBLENDE-PYROXENE-BIOTITE GRANODIORITE PORPHYRY, THREE PEAKS LACCOLITH"	Yale	"Madden, C.T."	75 07	Accurate to within 1 minute (~1 mile)	IRON SPRINGS DISTRICT	"Armstrong, R.L., 1966, K-Ar Dating Using Neutron Activation For Ar Analysis: Granitic Plutons Of The Eastern Great Basin, Nevada and Utah: Geochimica Et Cosmochimica Acta, v. 30, p. 565-600."	
485	-112.529167	39.941667	112	31	45	W	39	56	30	N	US	UT	Juab	250000	Delta	Outcrop or artificial surface exposure	Adamellite	"MEDIUM-GRAINED BIOTITE ADAMELLITE, SHEEPROCK MOUNTAIN STOCK"	Yale	"Madden, C.T."	75 07	Accurate to within 1 minute (~1 mile)	SHEEPROCK MOUNTAINS	"Armstrong, R.L., 1966, K-Ar Dating Using Neutron Activation For Ar Analysis: Granitic Plutons Of The Eastern Great Basin, Nevada and Utah: Geochimica Et Cosmochimica Acta, v. 30, p. 565-600."	
486	-114.358333	39.047222	114	21	30	W	39	2	50	N	US	NV	White Pine	62500	Sacramento Pass	Outcrop or artificial surface exposure	Adamellite	"MEDIUM-GRAINED BIOTITE ADAMELLITE, OSCEOLA STOCK"	Yale	"Madden, C.T."	75 07	Accurate to within 1 minute (~1 mile)	"3 1/2 MILES SOUTHEAST OF OSCEOLA, SOUTHERN SNAKE RANGE"	"Armstrong, R.L., 1966, K-Ar Dating Using Neutron Activation For Ar Analysis: Granitic Plutons Of The Eastern Great Basin, Nevada and Utah: Geochimica Et Cosmochimica Acta, v. 30, p. 565-600."	
487	-167.458056	60.213056	167	27	29	W	60	12	47	N	US	AK	(Not given)	63360	Nunivak Island A-7	Outcrop or artificial surface exposure	Basalt		USGS Menlo Park	"Dobson, S.W."	78 09	Accurate to within 1 minute (~1 mile)	"NORTHWEST COAST, IKOOK POINT, 20 METERS ABOVE UNIT AT SEA LEVEL, NUNIVAK ISLAND"	"Dalrymple, G.B., Cox, A., Doell, R.R., and Gromme, C.S., 1967, Pliocene Geomagnetic Polarity Epochs: Earth and Planetary Science Letters, v. 2, p. 163-173."	
488	-112.116667	40.519444	112	7	0	W	40	31	10	N	US	UT	Salt Lake	24000	Lark	Outcrop or artificial surface exposure	Monzonite porphyry	"FINE-GRAINED TO APHANITIC BIOTITE-AUGITE MONZONITE PORPHYRY, BINGHAM STOCK"	Yale	"Madden, C.T."	75 07	Accurate to within 0.1 minute (~500 feet)	"BINGHAM MINING DISTRICT, 550 N., 6800 E. IN DISTRICT COORDINATES"	"Armstrong, R.L., 1966, K-Ar Dating Using Neutron Activation For Ar Analysis: Granitic Plutons Of The Eastern Great Basin, Nevada and Utah: Geochimica Et Cosmochimica Acta, v. 30, p. 565-600."	
489	-167.431111	60.207778	167	25	52	W	60	12	28	N	US	AK	(Not given)	63360	Nunivak Island A-7	Outcrop or artificial surface exposure	Basalt	BASALT FLOW	USGS Menlo Park	"Dobson, S.W."	78 09	Accurate to within 1 minute (~1 mile)	"NORTHWEST COAST, IKOOKSMIUT, LOWER OF TWO BASALT FLOWS EXPOSED NORTH OF CREEK AT THIS LOCALITY, NUNIVAK ISLAND"	"Dalrymple, G.B., Cox, A., Doell, R.R., and Gromme, C.S., 1967, Pliocene Geomagnetic Polarity Epochs: Earth and Planetary Science Letters, v. 2, p. 163-173."	
490	-109.820833	44.961111	109	49	15	W	44	57	40	N	US	WY	Park	62500	Pilot Peak	Outcrop or artificial surface exposure	Sodic pegmatite	"ALBITE, QUARTZ, BIOTITE PEGMATITE WHICH IS SURROUNDED BY GRANITIC GNEISS"	Lamont (Columbia University)	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"10 MILES SOUTH OF COOKE CITY, MONTANA; 1 MILE NORTH OF THE CROSSING OF CLARKS FORK AND U.S. HWY. 12"	"Gast, P.W., Kulp, J.L., and Long, L.E., 1958, Absolute age of early Precambrian rocks in the Bighorn Basin of Wyoming and Montana, and southeastern Manitoba:  Transactions of the American Geophysical Union, v. 39, p. 322-334"	
491	-109.405556	45.033333	109	24	20	W	45	2	0	N	US	MT	Carbon	62500	Mount Maurice	Outcrop or artificial surface exposure	Pegmatite	PEGMATITE WITHIN QUAD CREEK METANORITE	Lamont (Columbia University)	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	ROADCUT 700 FEET SOUTH OF THE NORTHERN INTERSECTION OF ROUTE 12 AND THE QUAD CREEK NORITE BODY	"Gast, P.W., Kulp, J.L., and Long, L.E., 1958, Absolute age of early Precambrian rocks in the Bighorn Basin of Wyoming and Montana, and southeastern Manitoba:  Transactions of the American Geophysical Union, v. 39, p. 322-334"	
492	-109.405556	45.033333	109	24	20	W	45	2	0	N	US	MT	Carbon	62500	Mount Maurice	Outcrop or artificial surface exposure	Pegmatite	DISCORDANT PEGMATITE WITHIN THE QUAD CREEK METANORITE	Lamont (Columbia University)	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	ROADCUT 500 FEET SOUTH OF THE NORTHERN INTERSECTION OF ROUTE 12 AND THE QUAD CREEK NORITE BODY	"Gast, P.W., Kulp, J.L., and Long, L.E., 1958, Absolute age of early Precambrian rocks in the Bighorn Basin of Wyoming and Montana, and southeastern Manitoba:  Transactions of the American Geophysical Union, v. 39, p. 322-334"	
493	-82.129167	35.883333	82	7	45	W	35	53	0	N	US	NC	Mitchell	24000	Micaville	Unk	Pegmatite		Lamont (Columbia University)	"Madden, C.T."	75 03	Accurate to within 1 minute (~1 mile)	"HOOTOWL PEGMATITE, SPRUCE PINE DISTRICT"	"Carr, D.R., and Kulp, J.L., 1957, Potassium-argon method of geochronology:  Geological Society of America Bulletin, v. 68, p. 763-784"	
494	-82.125000	35.833333	82	7	30	W	35	50	0	N	US	NC	Mitchell	24000	Celo	Unk	Pegmatite		Lamont (Columbia University)	"Madden, C.T."	75 03	Accurate to within 5 minute (~5 miles)	"MCKINNEY PEGMATITE, SPRUCEPINE DISTRICT."	"Carr, D.R., and Kulp, J.L., 1957, Potassium-argon method of geochronology:  Geological Society of America Bulletin, v. 68, p. 763-784"	
495	-82.083333	35.933333	82	5	0	W	35	56	0	N	US	NC	Mitchell	24000	Spruce Pine	Unk	Pegmatite		Lamont (Columbia University)	"Madden, C.T."	75 03	Accurate to within 1 minute (~1 mile)	"MINPRO PEGMATITE, SPRUCE PINE DISTRICT"	"Carr, D.R., and Kulp, J.L., 1957, Potassium-argon method of geochronology:  Geological Society of America Bulletin, v. 68, p. 763-784"	
496	-82.083333	35.933333	82	5	0	W	35	56	0	N	US	NC	Mitchell	250000	Knoxville	Unk	Pegmatite		Lamont (Columbia University)	"Madden, C.T."	75 03	Accurate to within 5 minute (~5 miles)	"MARS HILL PEGMATITE, SPRUCE PINE DISTRICT"	"Carr, D.R., and Kulp, J.L., 1957, Potassium-argon method of geochronology:  Geological Society of America Bulletin, v. 68, p. 763-784"	
497	-81.150000	36.616667	81	9	0	W	36	37	0	N	US	VA	Grayson	24000	Sparta West	Unk	Gneiss	CRANBERRY GNEISS	Lamont (Columbia University)	"Madden, C.T."	75 03	Accurate to within 5 minute (~5 miles)	INDEPENDENCE	"Carr, D.R., and Kulp, J.L., 1957, Potassium-argon method of geochronology:  Geological Society of America Bulletin, v. 68, p. 763-784"	
498	-81.800000	36.216667	81	48	0	W	36	13	0	N	US	NC	Watauga	24000	Valle Circus	Unk	Gneiss	CRANBERRY GNEISS	Lamont (Columbia University)	"Madden, C.T."	75 03	Accurate to within 5 minute (~5 miles)	VALLE CRUCIS	"Carr, D.R., and Kulp, J.L., 1957, Potassium-argon method of geochronology:  Geological Society of America Bulletin, v. 68, p. 763-784"	
499	-82.125000	35.833333	82	7	30	W	35	50	0	N	US	NC	Mitchell	24000	Celo	Unk	Gneiss	CAROLINE GNEISS	Lamont (Columbia University)	"Madden, C.T."	75 03	Accurate to within 5 minute (~5 miles)	NEAR MCKINNEY MINE	"Carr, D.R., and Kulp, J.L., 1957, Potassium-argon method of geochronology:  Geological Society of America Bulletin, v. 68, p. 763-784"	
500	-82.000000	36.000000	82	0	0	W	36	0	0	N	US	NC	Unk	Unk	(Not known)	Unk	Gneiss	CAROLINA GNEISS	Lamont (Columbia University)	"Madden, C.T."	75 03	Accurate to within 30 minutes (~30 miles)	"BLUE RIDGE PARKWAY, OVERLOOK AT 237 MILE MARKER"	"Carr, D.R., and Kulp, J.L., 1957, Potassium-argon method of geochronology:  Geological Society of America Bulletin, v. 68, p. 763-784"	
501	-82.466667	35.316667	82	28	0	W	35	19	0	N	US	NC	Henderson	24000	Hendersonville	Unk	Gneiss	HENDERSON GNEISS	Lamont (Columbia University)	"Madden, C.T."	75 03	Accurate to within 5 minute (~5 miles)	NEAR HENDERSONVILLE	"Carr, D.R., and Kulp, J.L., 1957, Potassium-argon method of geochronology:  Geological Society of America Bulletin, v. 68, p. 763-784"	
502	-82.133333	36.083333	82	8	0	W	36	5	0	N	US	NC	Mitchell	250000	Johnson City	Core or cutting	Granite	BEECH GRANITE	Lamont (Columbia University)	"Madden, C.T."	75 03	Accurate to within 30 minutes (~30 miles)	"ON ROUTE 19E, 1 MI W OF ROAN MT. (THESE DIRECTIONS ARE IN CONFLICT--COMPILER"	"Carr, D.R., and Kulp, J.L., 1957, Potassium-argon method of geochronology:  Geological Society of America Bulletin, v. 68, p. 763-784"	
503	-83.450000	35.458333	83	27	0	W	35	27	30	N	US	NC	Swain	24000	Bryson City	Unk	Pegmatite		Lamont (Columbia University)	"Madden, C.T."	75 03	Accurate to within 5 minute (~5 miles)	"DEEP CREEK MINE NO. 1, BRYSON CITY"	"Carr, D.R., and Kulp, J.L., 1957, Potassium-argon method of geochronology:  Geological Society of America Bulletin, v. 68, p. 763-784"	
504	-74.004167	41.308333	74	0	15	W	41	18	30	N	US	NY	Orange	24000	Popolopen Lake	Outcrop or artificial surface exposure	Granite	STORM KING GRANITE	Lamont (Columbia University)	"Madden, C.T."	75 03	Accurate to within 1 minute (~1 mile)	BEAR MOUNTAIN	"Carr, D.R., and Kulp, J.L., 1957, Potassium-argon method of geochronology:  Geological Society of America Bulletin, v. 68, p. 763-784"	
505	-74.004167	41.308333	74	0	15	W	41	18	30	N	US	NY	Orange	24000	Popolopen Lake	Outcrop or artificial surface exposure	Pegmatite		Lamont (Columbia University)	"Madden, C.T."	75 03	Accurate to within 1 minute (~1 mile)	BEAR MOUNTAIN	"Carr, D.R., and Kulp, J.L., 1957, Potassium-argon method of geochronology:  Geological Society of America Bulletin, v. 68, p. 763-784"	
506	-74.004167	41.308333	74	0	15	W	41	18	30	N	US	NY	Orange	24000	Popolopen Lake	Outcrop or artificial surface exposure	Granite gneiss	CANADA HILL GRANITE GNEISS	Lamont (Columbia University)	"Madden, C.T."	75 03	Accurate to within 5 minute (~5 miles)	BEAR MOUNTAIN	"Carr, D.R., and Kulp, J.L., 1957, Potassium-argon method of geochronology:  Geological Society of America Bulletin, v. 68, p. 763-784"	
507	-74.004167	41.308333	74	0	15	W	41	18	30	N	US	NY	Orange	24000	Popolopen Lake	Outcrop or artificial surface exposure	Pegmatite	PEGMATITE IN CANADA HILL GRANITE GNEISS	Lamont (Columbia University)	"Madden, C.T."	75 03	Accurate to within 5 minute (~5 miles)	BEAR MOUNTAIN	"Carr, D.R., and Kulp, J.L., 1957, Potassium-argon method of geochronology:  Geological Society of America Bulletin, v. 68, p. 763-784"	
508	-103.452778	43.911111	103	27	10	W	43	54	40	N	US	SD	Pennington	24000	Mount Rushmore	Outcrop or artificial surface exposure	Pegmatite		Lamont (Columbia University)	"Madden, C.T."	75 03	Accurate to within 0.1 minute (~500 feet)	"INGERSOLL MINE, BLACK HILLS, NE1/4 NW1/4  SEC. 6, T2S, R6E"	"Carr, D.R., and Kulp, J.L., 1957, Potassium-argon method of geochronology:  Geological Society of America Bulletin, v. 68, p. 763-784"	
509	-87.883333	46.033333	87	53	0	W	46	2	0	N	US	MI	Dickinson	62500	Ralph	Unk	Pegmatite		Lamont (Columbia University)	"Madden, C.T."	75 03	Accurate to within 1 minute (~1 mile)	"SE1/4 SE1/4 SEC. 14, T42N, R29W"	"Carr, D.R., and Kulp, J.L., 1957, Potassium-argon method of geochronology:  Geological Society of America Bulletin, v. 68, p. 763-784"	
510	-106.625556	38.541667	106	37	32	W	38	32	30	N	US	CO	Gunnison	24000	Parlin	Outcrop or artificial surface exposure	Pegmatite		Lamont (Columbia University)	"Madden, C.T."	75 03	Accurate to within 0.1 minute (~500 feet)	BROWN DERBY MINE	"Carr, D.R., and Kulp, J.L., 1957, Potassium-argon method of geochronology:  Geological Society of America Bulletin, v. 68, p. 763-784"	
511	-109.683333	46.365556	109	41	0	W	46	21	56	N	US	MT	Wheatland	250000	Roundup	Outcrop or artificial surface exposure	Bentonite	BENTONITE CONTAINED WITHIN THE MOWRY SHALE	University of Alberta	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"WINNECOOK RANCH FOSSIL LOCALITY; SEC. 14, T7N, R16E"	"Folinsbee, R.E., Baadsgaard, H., and Cummings, G.L., 1963, Dating of volcanic ash beds (bentonites) by the K-Ar method:  Nuclear Science Series, Report No. 38, p. 70-82"	
512	-107.000000	47.550000	107	0	0	W	47	33	0	N	US	MT	Garfield	62500	Maloney Hill	Outcrop or artificial surface exposure	Bentonite	"CONTAINED WITHIN THE ""BIG DIRTY"" COAL SEAM OF THE BASAL FORT UNION FORMATION"	University of Alberta	"Cole, J.C."	75 08	Accurate to within 5 minute (~5 miles)	HELL CREEK AREA	"Folinsbee, R.E., Baadsgaard, H., and Cummings, G.L., 1963, Dating of volcanic ash beds (bentonites) by the K-Ar method:  Nuclear Science Series, Report No. 38, p. 70-82"	
513	-109.428333	45.023889	109	25	42	W	45	1	26	N	US	MT	Carbon	62500	Mount Maurice	Outcrop or artificial surface exposure	Quartz dolerite	"SOMEWHAT RECRYSTALLIZED, MAGNETITE REPLACED"	Unk (original code was AB RI)	"Cole, J.C."	75 08	Accurate to within 0.1 minute (~500 feet)	HIGHWAY 12 ROADCUT AT THE MOST SOUTHERLY SWITCHBACK AT ELEVATION 8640 FEET; BEARTOOTH MOUNTAINS	"Larson, E.E., Reynolds, R., and Hoblitt, R., 1973, New Virtual and Paleomagnetic Pole Positions From Isotopically Dated Precambrian Rocks In Wyoming, Montana, and Arizona: Their Significance In Establishing A North American Apparent Polar Wandering Path: Geological Society of America Bulletin, v. 84, p. 3231-3248."	"Their Significance In Establishing A North American Apparent Polar Wandering Path: Geological Society of America Bulletin, v. 84, p. 3231-3248."
514	-109.640278	45.012500	109	38	25	W	45	0	45	N	US	MT	Carbon	62500	Alpine	Outcrop or artificial surface exposure	Mafic	UNRECRYSTALLIZED MAFIC DIKE	Unk (original code was AB RI)	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"OUTCROP 1 KM NORTH OF TIEL LAKE, BEARTOOTH MOUNTAINS"	"Larson, E.E., Reynolds, R., and Hoblitt, R., 1973, New Virtual and Paleomagnetic Pole Positions From Isotopically Dated Precambrian Rocks In Wyoming, Montana, and Arizona: Their Significance In Establishing A North American Apparent Polar Wandering Path: Geological Society of America Bulletin, v. 84, p. 3231-3248."	"Their Significance In Establishing A North American Apparent Polar Wandering Path: Geological Society of America Bulletin, v. 84, p. 3231-3248."
515	-122.616667	40.420833	122	37	0	W	40	25	15	N	US	CA	Shasta	62500	Ono	Outcrop or artificial surface exposure	Quartz diorite	HORNBLENDE-RICH QUARTZ DIORITE FROM SHASTA BALLY BATHOLITH WHICH INTRUDES SEDIMENTS CONTAINING OXFORDIAN-KIMERIDGIAN FOSSILS AND IS OVERLAPPED NON-CONFORMABLY BY BEDS CONTAINING HAUTERIVIAN FAUNA	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 1 minute (~1 mile)	I MILE NORTH OF ONO	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
516	-121.116667	38.816667	121	7	0	W	38	49	0	N	US	CA	Placer	62500	Auburn	Quarry	Quartz diorite	FROM PLUTON WHICH INTRUDES ROCKS CONTAINING OXFORDIAN-KIMERIDGIAN FOSSILS	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 1 minute (~1 mile)	"QUARRY IN NE1/4 SEC. 18,T11N, R8E"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
517	-119.450000	38.433333	119	27	0	W	38	26	0	N	US	CA	Mono	62500	Fales Hot Springs	Outcrop or artificial surface exposure	Tuff	BIOTITE WELDED TUFF	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 5 minute (~5 miles)	"WEST WALKER RIVER CANYON (EAST SIDE), 9.7 MILES NORTH OF FALES HOT SPRINGS ON HIGHWAY 395"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
518	-119.241667	34.741667	119	14	30	W	34	44	30	N	US	CA	Ventura	24000	San Guillermo	Outcrop or artificial surface exposure	Tuff	RHYOLITIC CRYSTAL VITRIC TUFF WHICH IS 205 FEET BELOW TOP OF CALIENTE FORMATION. TUFF IS OF BARSTOVIAN LAND MAMMAL AGE.	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 1 minute (~1 mile)	"DRY CANYON, UPPER CUYAMA VALLEY"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
519	-114.916667	39.000000	114	55	0	W	39	0	0	N	US	NV	White Pine	Unk	(Not given)	Outcrop or artificial surface exposure	Tuff	BIOTITE RHYOLITIC WELDED TUFF	"University of California, Berkeley"	"Madden, C.T."	75 06	Location not given or only in terms less accurate than 30 minutes	"NEAR SUMMIT AT SHEEP PASS, EGAN RANGE"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
520	-120.300000	36.183333	120	18	0	W	36	11	0	N	US	CA	Fresno	62500	Coalinga	Core or cutting	Sandstone	BIOTITE-BEARING GLAUCONITIC SANDSTONE. BIOTITE APPEARS TO BE VOLCANIC IN ORIGIN	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 1 minute (~1 mile)	"CORE FROM 8092-8102 FOOT INTERVAL FROM STANDARD OIL WELL NO. 62-13C IN SEC. 13, T20S, R15E (M.D.B. AND M.)"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
521	-112.013889	46.465278	112	0	50	W	46	27	55	N	US	MT	Jefferson	62500	Jefferson City	Quarry	Granodiorite	"CLANCY GRANODIORITE, BOULDER BATHOLITH"	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 1 minute (~1 mile)	"KAIN QUARRY ON CLANCY CREEK, 1 MILE WEST OF CLANCY"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
522	-122.125000	38.750000	122	7	30	W	38	45	0	N	US	CA	(Not given)	Unk	(Not given)	Outcrop or artificial surface exposure	Bentonite	BENTONITE OCCURS IN A THICK SHALE (5000 FT. OR SO) UNDERLYING THE VENADO FORMATION. FOSSILS ABOUT 250 FT. ABOVE THE BENTONITE ARE CENOMANIAN-TURONIAN IN AGE	"University of California, Berkeley"	"Madden, C.T."	75 06	Location not given or only in terms less accurate than 30 minutes	CACHE CREEK	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
523	-118.900000	38.500000	118	54	0	W	38	30	0	N	US	NV	Mineral	62500	Aurora	Outcrop or artificial surface exposure	Tuff	"BIOTITE RHYOLITIC TUFF, BASAL TUFF IN COAL VALLEY FORMATION"	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 5 minute (~5 miles)	"APPROXIMATELY 20000 FT. WEST OF ALDRICH STATION, COAL VALLEY, SEC. 6, T7N, R28E."	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
524	-117.033333	35.000000	117	2	0	W	35	0	0	N	US	CA	San Bernardino	62500	Barstow 	Outcrop or artificial surface exposure	Tuff	BIOTITE DACITE TUFF NEAR MIDDLE OF BARSTOW FORMATION (TYPE LOCALITY)	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 5 minute (~5 miles)	"BARSTOW SYNCLINE, NORTH OF BARSTOW"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
525	-148.000000	62.166667	148	0	0	W	62	10	0	N	US	AK	(Not given)	250000	Talkeetna Mountains	Outcrop or artificial surface exposure	Diorite		"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 30 minutes (~30 miles)	"HEADWATERS OF THE OSHETNA RIVER, TALKEETNA MOUNTAINS"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
526	-104.583333	30.000000	104	35	0	W	30	0	0	N	US	TX	Presidio	Unk	(Not given)	Outcrop or artificial surface exposure	Tuff	RHYOLITIC TUFF	"University of California, Berkeley"	"Madden, C.T."	75 06	Location not given or only in terms less accurate than 30 minutes	4 MI. EAST OF RIO GRANDE RIVER	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
527	-86.966667	33.383333	86	58	0	W	33	23	0	N	US	AL	Jefferson	24000	Bessemer	Core or cutting	Tuff	"TUFF NEAR TOP OF CARTER'S LIMESTONE, STONE RIVER GROUP"	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 30 minutes (~30 miles)	"WENONAH NO. 8, BESSEMER"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
528	-120.266667	36.245833	120	16	0	W	36	14	45	N	US	CA	Fresno	62500	Coalinga	Core or cutting	Sandstone	"GLAUCONITIC SANDSTONE. UPPER EOCENE (LOWER KREYENHAGEN, A-2 ZONE OF LAIMING)"	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 1 minute (~1 mile)	"CORE FROM 8230 FOOT INTERVAL IN BANDINI WELL NO. 64-30B IN SEC. 30, T19S, R16E (M.D.B. AND M.)"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
529	-89.000000	34.500000	89	0	0	W	34	30	0	N	US	MS	(Not given)	Unk	(Not given)	Outcrop or artificial surface exposure	Sandstone	GLAUCONITIC SANDSTONE. RIPLEY FORMATION (MAESTRICHTIAN STAGE OF UPPER CRETACEOUS.	"University of California, Berkeley"	"Marvin, R.F."	75 08	Location not given or only in terms less accurate than 30 minutes	"LOCALITY IS IN DOUBT;  IT IS GIVEN AS ""GULF COAST, OUTCROP"""	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
530	-87.000000	34.500000	87	0	0	W	34	30	0	N	US	AL	(Not given)	Unk	(Not given)	Outcrop or artificial surface exposure	Sandstone	GLAUCONITIC SANDSTONE. RIPLEY FORMATION (MAESTRICHTIAN STAGE OF UPPER CRETACEOUS.	"University of California, Berkeley"	"Marvin, R.F."	75 08	Location not given or only in terms less accurate than 30 minutes	"LOCALITY IS IN DOUBT;  IT IS GIVEN AS ""GULF COAST, OUTCROP"""	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
531	-120.383333	36.187500	120	23	0	W	36	11	15	N	US	CA	Fresno	62500	Coalinga	Core or cutting	Sandstone	GLAUCONITIC SANDSTONE CORE FROM DOMENGINE FORMATION (VERY TOP OF MIDDLE EOCENE)	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 1 minute (~1 mile)	"CORE FROM 4579-4599 FOOT INTERVAL IN MAGNET OIL FEARRON WELL NO. 2 IN SEC. 18, T20S, R15E (M.D.B. AND M.)"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
532	-120.125000	36.500000	120	7	30	W	36	30	0	N	US	CA	Fresno	24000	Five Points	Core or cutting	Sandstone	GLAUCONITIC SANDSTONE FROM BASE OF UPPER EOCENE (BASAL KREYENHAGEN)	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 1 minute (~1 mile)	"CORE FROM 8012-8063 FOOT INTERVAL IN GENERAL PETROLEUM ESPE ROAD NO. 75-33 IN SEC. 33, T16S, R17E (M.D.B. AND M.)"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
533	-120.425000	36.100000	120	25	30	W	36	6	0	N	US	CA	Fresno	62500	Coalinga	Core or cutting	Sandstone	GLAUCONITIC SANDSTONE FROM THE BASE OF UPPER EOCENE (BASAL KREYENHAGEN)	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 1 minute (~1 mile)	"CORE FROM 10,790 FOOT INTERVAL IN ARTNELL HONOLULU KREYENHAGEN WELL NO. 81X IN SEC. 14, T21S, R14E (M.D.B. AND M.)"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
534	-87.250000	32.000000	87	15	0	W	32	0	0	N	US	AL	(Not given)	Unk	(Not given)	Outcrop or artificial surface exposure	Sandstone	"GLAUCONITIC SANDSTONE, MATHEWS' LANDING MARL"	"University of California, Berkeley"	"Marvin, R.F."	75 08	Location not given or only in terms less accurate than 30 minutes	"LOCATION IS IN DOUBT; IT IS LISTED AS ""GULF COAST, OUTCROP?"""	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
535	-90.000000	34.000000	90	0	0	W	34	0	0	N	US	MS	(Not given)	Unk	(Not given)	Outcrop or artificial surface exposure	Sandstone	"GLAUCONITIC SANDSTONE, WINONA SAND OF LOWER CLAIBORNE GROUP"	"University of California, Berkeley"	"Marvin, R.F."	75 08	Location not given or only in terms less accurate than 30 minutes	"LOCATION IS IN DOUBT; IT IS LISTED AS ""GULF COAST, OUTCROP?"""	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
536	-87.500000	31.750000	87	30	0	W	31	45	0	N	US	AL	(Not given)	Unk	(Not given)	Outcrop or artificial surface exposure	Sandstone	"GLAUCONITIC SANDSTONE, MOODY BRANCH FORMATION AT BASE OF THE JACKSON GROUP"	"University of California, Berkeley"	"Marvin, R.F."	75 08	Location not given or only in terms less accurate than 30 minutes	"LOCATION IS IN DOUBT; IT IS LISTED AS ""GULF COAST, OUTCROP?"""	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
537	-90.000000	32.500000	90	0	0	W	32	30	0	N	US	MS	(Not given)	Unk	(Not given)	Outcrop or artificial surface exposure	Sandstone	"GLAUCONITIC SANDSTONE, MOODY BRANCH FORMATION AT BASE OF THE JACKSON GROUP"	"University of California, Berkeley"	"Marvin, R.F."	75 08	Location not given or only in terms less accurate than 30 minutes	"LOCATION IS IN DOUBT; IT IS LISTED AS ""GULF COAST, OUTCROP?"""	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
538	-120.108333	36.508333	120	6	30	W	36	30	30	N	US	CA	Fresno	62500	Kerman	Core or cutting	Sandstone	GLAUCONITIC SANDSTONE	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 0.1 minute (~500 feet)	"CORE FROM 8150-8160 FOOT INTERVAL FROM AMERADA CLOVER WELL NO. 53-28 IN SEC. 28, T16S, R17E (M.D.B. AND M.)"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
539	-119.675000	35.400000	119	40	30	W	35	24	0	N	US	CA	Kern	24000	Belridge	Core or cutting	Sandstone	"GLAUCONTIC SANDSTONE (LOWER MIOCENE, LOWER ZEMORRIAN) WHICH INCLUDES BASE OF LOWER SANTOS SHALE-TOP OF PHACOIDES SAND."	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 1 minute (~1 mile)	"CORE FROM 5688-5716 FOOT INTERVAL IN HUB PETROLEUM CYMRIC WELL NO. 1 IN SEC. 22, T29S, R21E (M.D.B. AND M.)"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
540	-120.125000	36.500000	120	7	30	W	36	30	0	N	US	CA	Fresno	24000	Five Points	Core or cutting	Sandstone	GLAUCONITIC SANDSTONE	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 1 minute (~1 mile)	"CORE FROM 8092-8102 FOOT INTERVAL IN GENERAL PETROLEUM ESPE ROAD WELL NO. 75-33 IN SEC. 33, T16S, R17E (M.D.B. AND M.)"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
541	-120.300000	36.183333	120	18	0	W	36	11	0	N	US	CA	Fresno	62500	Coalinga	Core or cutting	Sandstone	GLAUCONITIC SANDSTONE	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 1 minute (~1 mile)	"CORE FROM 8092-8102 FOOT INTERVAL IN STANDARD OIL COMPANY WELL NO. 62-13C IN SEC. 13, T20S, R15E (M.D.B. AND M.)"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
542	-120.866667	35.366667	120	52	0	W	35	22	0	N	US	CA	San Benito	62500	Hernandez Valley	Outcrop or artificial surface exposure	Sandstone	GLAUCONITIC SANDSTONE AT THE BASE OF UPPER EOCENE (BASAL KREYENHAGEN)	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 30 minutes (~30 miles)	"ROAD CUT, HERNANDEZ VALLEY"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
543	-123.500000	39.500000	123	30	0	W	39	30	0	N	US	CA	Mendocino	Unk	(Not given)	Outcrop or artificial surface exposure	Sandstone	GLAUCONITIC SANDSTONE (UPPER MIOCENE OR LOWER PLIOCENE)	"University of California, Berkeley"	"Madden, C.T."	75 06	Location not given or only in terms less accurate than 30 minutes		"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
544	-87.875000	40.866667	87	52	30	W	40	52	0	N	US	IL	Vermilion	24000	Oakwood	Outcrop or artificial surface exposure	Clay	BULK SAMPLE OF FITHIAN ILLITE WHICH IS THE UNDERCLAY OF THE MACOUPIN CYCLOTHEM OF THE MCLEANSBURG GROUP (LOWER STEPHANIAN-MISSOURI SERIES)-LOWER UPPER PENNSYLVANIAN	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 1 minute (~1 mile)	"TYPE LOCALITY OF FITHIAN ILLITE, FITHIAN"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
545	-120.233333	36.170833	120	14	0	W	36	10	15	N	US	CA	Fresno	24000	Guijarrel Hill	Core or cutting	Sandstone	GLAUCONITIC SANDSTONE FROM THE BASE OF UPPER EOCENE (BASAL KREYENHAGEN)	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 1 minute (~1 mile)	"CORE FROM 9220 FOOT INTERVAL IN GUIJARRAL SERVICE WELL NO. 87X IN SEC. 21, T20S, R16E (M.D.B. AND M.)"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
546	-120.958333	35.916667	120	57	30	W	35	55	0	N	US	CA	Kings	24000	Los Viejos	Core or cutting	Sandstone	GLAUCONITIC SANDSTONE FROM THE BASE OF UPPER EOCENE (BASAL KREYENHAGEN)	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 1 minute (~1 mile)	"CORE FROM 12,175 FOOT INTERVAL IN KETTLEMAN M.D. CORP. WELL NO. 38-19 IN SEC. 19, T23S, R19E (M.D.B. AND M.)"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
547	-120.100000	36.633333	120	6	0	W	36	38	0	N	US	CA	Fresno	62500	Kerman	Core or cutting	Sandstone	GLAUCONITIC SANDSTONE FROM THE BASE OF THE UPPER EOCENE (BASAL KREYENHAGEN)	"University of California, Berkeley"	"Madden, C.T."	75 06	Accurate to within 1 minute (~1 mile)	"CORE FROM 6311 FOOT INTERVAL IN FEDERAL NOBLE WELL NO. 26 IN SEC. 10, T15S, R17E (M.D.B. AND M.)"	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
548	-97.250000	34.250000	97	15	0	W	34	15	0	N	US	OK	(Not given)	Unk	(Not given)	Unk	Shale	"BULK SAMPLE OF SHALY MEMBER IN OTTERVILLE LIMESTONE (WESTPHALIAN STAGE, LOWER PENNSYLVANIAN"	"University of California, Berkeley"	"Marvin, R.F."	75 08	Location not given or only in terms less accurate than 30 minutes	NO LOCATION GIVEN IN TEXT	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
549	-97.250000	34.250000	97	15	0	W	34	15	0	N	US	OK	(Not given)	Unk	(Not given)	Unk	Shale	"BULK SAMPLE OF SHALY MEMBER OF SYCAMORE LIMESTONE (LOWER TOURNAISIAN STAGE, LOWER MISSISSIPPIAN)"	"University of California, Berkeley"	"Marvin, R.F."	75 08	Location not given or only in terms less accurate than 30 minutes	NO LOCATION GIVEN IN TEXT	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
550	-97.250000	34.250000	97	15	0	W	34	15	0	N	US	OK	(Not given)	Unk	(Not given)	Unk	Shale	"BULK SAMPLE OF SHALY MEMBER OF HARAGAN LIMESTONE (GEDINNIAN STAGE, BASAL DEVONIAN)"	"University of California, Berkeley"	"Marvin, R.F."	75 08	Location not given or only in terms less accurate than 30 minutes	NO LOCATION GIVEN IN TEXT	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
551	-97.250000	34.250000	97	15	0	W	34	15	0	N	US	OK	(Not given)	Unk	(Not given)	Unk	Shale	"BULK SAMPLE OF SHALY MEMBER OF HARAGAN LIMESTONE (GEDINNIAN STAGE, BASAL DEVONIAN)"	"University of California, Berkeley"	"Marvin, R.F."	75 08	Location not given or only in terms less accurate than 30 minutes	NO LOCATION GIVEN IN TEXT	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
552	-96.500000	34.500000	96	30	0	W	34	30	0	N	US	OK	(Not given)	Unk	(Not given)	Unk	Shale	"BULK SAMPLE OF SHALY MEMBER OF CHIMNEY HILL LIMESTONE (LOWER LLANDOVERY STAGE, LOWER SILURIAN)"	"University of California, Berkeley"	"Marvin, R.F."	75 08	Location not given or only in terms less accurate than 30 minutes	NO LOCATION GIVEN IN TEXT	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
553	-96.500000	34.500000	96	30	0	W	34	30	0	N	US	OK	(Not given)	Unk	(Not given)	Unk	Shale	"BULK SAMPLE OF SHALY MEMBER OF CHIMNEY HILL LIMESTONE (LOWER LLANDOVERY STAGE, LOWER SILURIAN)"	"University of California, Berkeley"	"Marvin, R.F."	75 08	Location not given or only in terms less accurate than 30 minutes	NO LOCATION GIVEN IN TEXT	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
554	-97.250000	34.250000	97	15	0	W	34	15	0	N	US	OK	(Not given)	Unk	(Not given)	Unk	Shale	"BULK SAMPLE OF SHALY MEMBER OF BROMIDE LIMESTONE (MID-CHAMPLANIAN STAGE, MID-ORDOVICIAN)"	"University of California, Berkeley"	"Marvin, R.F."	75 08	Location not given or only in terms less accurate than 30 minutes	NO LOCATION GIVEN IN TEXT	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
555	-97.500000	34.500000	97	30	0	W	34	30	0	N	US	OK	(Not given)	Unk	(Not given)	Unk	Shale	BULK SAMPLE OF SHALY MEMBER OF BUTTERLY DOLOMITE (EARLY CAMBRIAN)	"University of California, Berkeley"	"Marvin, R.F."	75 08	Location not given or only in terms less accurate than 30 minutes	NO LOCATION GIVEN IN TEXT	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
556	-87.000000	32.000000	87	0	0	W	32	0	0	N	US	AL	(Not given)	Unk	(Not given)	Outcrop or artificial surface exposure	Sandstone	"GLAUCONITIC SANDSTONE, BASHI FORMATION"	"University of California, Berkeley"	"Marvin, R.F."	75 08	Location not given or only in terms less accurate than 30 minutes	"LOCATION IS IN DOUBT; IT IS LISTED AS ""GULF COAST, OUTCROP?""."	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
557	-89.000000	31.250000	89	0	0	W	31	15	0	N	US	MS	(Not given)	Unk	(Not given)	Outcrop or artificial surface exposure	Sandstone	"GLAUCONITIC SANDSTONE, BASHI FORMATION"	"University of California, Berkeley"	"Marvin, R.F."	75 08	Location not given or only in terms less accurate than 30 minutes	"LOCATION IS IN DOUBT; IT IS LISTED AS ""GULF COAST, OUTCROP?""."	"Evernden, J.F., Curtis, G.H., Obradovich, J.D., and Kistler, R.W., 1961, On the evaluation of glauconite and illite for dating sedimentary rocks by the potassium-argon method:  Geochimica et Cosmochimica Acta, v. 23, p. 78-99"	
558	-82.098611	35.968333	82	5	55	W	35	58	6	N	US	NC	Mitchell	24000	Spruce Pine	Mine	Pegmatite	ZONED	"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 1 second (~100 feet)	"SAMPLE FROM CHESTNUT FLAT MINE, ABOUT 6 MILES NORTH-NORTHWEST OF SPRUCE PINE"	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
559	-103.451667	43.911389	103	27	6	W	43	54	41	N	US	SD	Pennington	24000	Mount Rushmore	Mine	Pegmatite	LEPIDOLITE-MUSCOVITE PEGMATITE CONTAINING URANINITE; ZONED	"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 0.1 minute (~500 feet)	"COLLECTED FROM BOB INGERSOLL (HOLY SMOKE) MINE DUMP ADJACENT TO DIKE 1; TWO MILES NORTHWEST OF KEYSTONE IN SEC. 6, T2S, R6E"	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
560	-106.625556	38.541667	106	37	32	W	38	32	30	N	US	CO	Gunnison	24000	Parlin	Mine	Pegmatite	"86% ALBITE, 5% QUARTZ, 4% BIOTITE, 2.2% MONAZITE, 1.4% COLUMBITE-TANTALITE"	"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 1 second (~100 feet)	BROWN DERBY MINE SOUTHWEST OF OHIO CITY; SAMPLE COLLECTED FROM LOOSE BLOCKS AT PIT 11	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
561	-105.789167	36.193056	105	47	21	W	36	11	35	N	US	NM	Taos	24000	Trampas	Mine	Pegmatite	"CONTAINS LEPIDOLITE, WHILE AND PURPLE MUSCOVITE, YELLOW MICROLITE, AND DARK BROWN MICROLITE; ASSOCIATED WITH EMBUDO GRANITE"	"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 0.1 minute (~500 feet)	"HARDING MINE, DIXON; ABOUT 3.5 MILES E. OF U.S. HIGHWAY 64 ON NEW MEXICO HIGHWAY 75 BETWEEN APODACA AND PENASCO"	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
562	-113.173611	34.622222	113	10	25	W	34	37	20	N	US	AZ	Yavapai	62500	Bagdad	Outcrop or artificial surface exposure	Granite	LAWLER PEAK GRANITE CONTAINING PRIMIARY MUSCOVITE	"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	3/4 MILE NORTHEAST OF LAWLER PEAK NEAR BAGDAD	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
563	-106.666667	38.479167	106	40	0	W	38	28	45	N	US	CO	Gunnison	24000	Houston Gulch	Outcrop or artificial surface exposure	Granite	"QUARTZ CREEK GRANITE; BIOTITE AND SECONDARY MUSCOVITE; PINK, COARSE-GRAINED, PORPHYRITIC"	"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 5 minute (~5 miles)	"FROM QUARTZ CREEK DISTRICT NEAR GUNNISON; ROADCUT ON U.S. HIGHWAY 50 BETWEEN DOYLEVILLE AND PARLIN, ABOUT 5 MILES SOUTH OF BROWN DERBY MINE"	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
564	-98.445000	30.738889	98	26	42	W	30	44	20	N	US	TX	Llano	24000	Kingsland	Quarry	Granite	"DARK PINK, SOMEWHAT PORPHYRITIC AND COARSE-GRAINED"	"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 0.1 minute (~500 feet)	"PETRICK QUARRY, NORTH OF THE INTERSECTION OF TEXAS ROUTES 29 AND 261, 17 MILES EAST OF LLAN0"	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
565	-104.966667	38.833333	104	58	0	W	38	50	0	N	US	CO	El Paso	24000	Manitou Springs	Outcrop or artificial surface exposure	Granite	PIKE'S PEAK GRANITE; FELDSPAR KAOLINIZED AND BIOTITE EXTENSIVELY CHLORITIZED	"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 5 minute (~5 miles)	FROM ROADCUT BETWEEN MANITOU SPRINGS AND THE PIKE'S PEAK ROAD	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
566	-71.097222	44.019444	71	5	50	W	44	1	10	N	US	NH	Conway	62500	North Conway	Quarry	Hastingsite granite	"PHASE OF THE CONWAY GRANITE; GREENISH, CONTAINS HORNBLENDE, HASTINGSITE, APATITE, MAGNETITE AND RARE MINERALS"	"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 0.1 minute (~500 feet)	"REDSTONE QUARRY, REDSTONE"	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
567	-71.097222	44.019444	71	5	50	W	44	1	10	N	US	NH	Conway	62500	North Conway	Quarry	Granite	CONWAY GRANITE; TYPICAL PINK PHASE	"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 0.1 minute (~500 feet)	"REDSTONE QUARRY, REDSTONE"	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
568	-99.304167	34.902778	99	18	15	W	34	54	10	N	US	OK	Greer	24000	Lake Altus	Outcrop or artificial surface exposure	Granite		"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	ROADCUT 0.65 MILES SOUTH OF THE QUARTZ MOUNTAIN STATE PARK ON THE WEST SHORE OF THE LAKE ALTUS RESERVOIR	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
569	-98.644444	34.683333	98	38	40	W	34	41	0	N	US	OK	Comanche	24000	Quanah Mountain	Outcrop or artificial surface exposure	Pegmatite		"Geophysics Lab, CIW"	"Marvin, R.F."	75 09	Accurate to within 1 minute (~1 mile)	"QUANAH MOUNTAIN, WICHITA MOUNTAINS"	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
570	-107.997222	43.408333	107	59	50	W	43	24	30	N	US	WY	Fremont	24000	Guffy Peak	Outcrop or artificial surface exposure	Pegmatite		"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 0.1 minute (~500 feet)	"BRIDGER MOUNTAINS; NE 1/4 SEC. 28, T40N, R93W; DIKE 7 OR 11 OF MC LAUGHLIN (1940)"	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
571	-113.173611	34.622222	113	10	25	W	34	37	20	N	US	AZ	Yavapai	62500	Bagdad	Outcrop or artificial surface exposure	Pegmatite	ASSOCIATED WITH THE LAWLER PEAK GRANITE	"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"ABOUT 3/4 MILE NE OF LAWLER PEAK, NEAR BAGDAD"	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
572	-112.633333	33.883333	112	38	0	W	33	53	0	N	US	AZ	Maricopa	24000	Wickenburg	Outcrop or artificial surface exposure	Pegmatite		"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 5 minute (~5 miles)	SAMPLE FROM AN EXPOSURE ON THE FORK OF SAN DOMINGO WASH NEAR RILEY'S PLACE	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
573	-105.483333	35.869444	105	29	0	W	35	52	10	N	US	NM	San Miguel	24000	Rociada	Mine	Pegmatite	"ZONED, WITH OUTER MARGINS OF GRANITOID TEXTURE AND IRREGULAR INNER ZONES OF COARSE QUARTZ AND PERTHITE WITH LEPIDOLITE AND TOPAZ"	"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"PIDLITE MINE, ABOUT 5.5 MILES NW OF LOWER ROCIADA NEAR RAMINEZ RANCH, SOUTHERN SANGRE DE CRISTO MOUNTAINS"	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
574	-117.066667	33.383333	117	4	0	W	33	23	0	N	US	CA	San Diego	24000	Pechanga	Unk	Pegmatite		"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 5 minute (~5 miles)	INTERLABORATORY SERIES NUMBER A107	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
575	-108.750000	38.750000	108	45	0	W	38	45	0	N	US	CO	Mesa	250000	Moab	Outcrop or artificial surface exposure	Granite	UNCOMPAGHRE GRANITE; SLIGHTLY ALTERED WHITE MUSCOVITE GRANITE WITH BIOTITE AND ZIRCON	"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 30 minutes (~30 miles)	UNAWEEP CANYON	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
576	-106.516667	35.200000	106	31	0	W	35	12	0	N	US	NM	Bernalillo	24000	Alameda	Outcrop or artificial surface exposure	Granite	"SANDIA GRANITE, COMPOSED OF SERICITIZED PLAGIOCLASE, BIOTITE, APATITE, SPHENE, AND MINOR CHLORITE AND MAGNETITE"	"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 5 minute (~5 miles)	LOWER PART OF SANDIA ESCARPMENT NW OF ALBUQUERQUE	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
577	-112.043611	36.085833	112	2	37	W	36	5	9	N	US	AZ	Coconino	62500	Bright Angel	Outcrop or artificial surface exposure	Granite	"ZOROASTER GRANITE; MASSIVE-GNEISSIC, MEDIUM-GRAINED MUSCOVITE-BIOTITE GRANITE; SLIGHTLY CRUSHED"	"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 0.1 minute (~500 feet)	JUST W OF THE MOUTH OF ZOROASTER CREEK IN THE GRAND CANYON	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
578	-105.734722	39.694722	105	44	5	W	39	41	41	N	US	CO	Clear Creek	24000	Georgetown	Quarry	Granite	"SILVER PLUME GRANITE (QUARTZ MONZONITE); FINE-GRAINED, GRAY, MASSIVE, CONTAINS BIOTITE, MUSCOVITE, FLUORITE, AND SPHENE"	"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 0.1 minute (~500 feet)	SAMPLE FROM QUARRY 1/2 MILE W OF SILVER PLUME	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
579	-105.041667	38.840556	105	2	30	W	38	50	26	N	US	CO	El Paso	24000	Pikes Peak	Outcrop or artificial surface exposure	Granite	FINE-GRAINED RED GRANITE	"Geophysics Lab, CIW"	"Cole, J.C."	75 08	Accurate to within 0.1 minute (~500 feet)	"SAMPLE COLLECTED NEAR THE PARKING LOT AT THE END OF THE TOLL ROAD, SUMMIT OF PIKES PEAK"	"Aldrich, L.T., Wetherill, G.W., Davis, G.L., and Tilton, G.R., 1958, Radioactive ages of micas from granitic rocks by Rb-Sr and K-A methods:  Transactions of the American Geophysical Union, v. 39, p. 1124-1134"	
580	-102.900000	48.333333	102	54	0	W	48	20	0	N	US	ND	Williams	250000	Williston	Core or cutting	Gneiss	GARNET-BIOTITE GNEISS	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"AMERADA NORTH DAKOTA A UNIT 9, 14825-14827 FOOT INTERVAL; SEC. 16, T156N, R95W; WILLISTON BASIN"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
581	-103.408333	46.866667	103	24	30	W	46	52	0	N	US	ND	Billings	24000	Tracy Mountain	Core or cutting	Biotite quartz monzonite		USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"AMERADA NO. 8 SCORIA UNIT, 13645 FOOT DEPTH; SEC. 10, T139N, R101W; WILLISTON BASIN"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
582	-102.350000	45.425000	102	21	0	W	45	25	30	N	US	SD	Perkins	250000	Lemmon	Core or cutting	Adamellite	MEDIUM-GRAINED	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"SHELL NO. 1 VEAL, 8300-8317 FOOT INTERVAL; SEC. 7, T17N, R15E; WILLISTON BASIN"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
583	-102.166667	45.090278	102	10	0	W	45	5	25	N	US	SD	Perkins	250000	Lemmon	Core or cutting	Adamellite	MEDIUM-GRAINED	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"EVANS NO. 1 QUERBES-CAPP, 7310-7318 FOOT INTERVAL; SEC. 19, T13N, R16E; WILLISTON BASIN"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
584	-103.116667	44.737500	103	7	0	W	44	44	15	N	US	SD	Butte	24000	Volunteer NE	Core or cutting	Gneiss	FINE- TO MEDIUM-GRAINED BIOTITE-FELDSPAR-QUARTZ GNEISS	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"MOBIL NO. 1 SIPILA, 6328 FOOT DEPTH; SEC. 14, T9N, R8E; WILISTON BASIN"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
585	-103.419444	43.880833	103	25	10	W	43	52	51	N	US	SD	Custer	24000	Mount Rushmore	Mine	Pegmatite	ETTA PEGMATITE	USGS Reston	"Cole, J.C."	75 08	Accurate to within 0.1 minute (~500 feet)	"ETTA MINE, BLACK HILLS; 2 MILES DUE EAST OF MOUNT RUSHMORE"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
586	-103.541667	43.866667	103	32	30	W	43	52	0	N	US	SD	Custer	24000	Custer	Outcrop or artificial surface exposure	Granite	PEGMATITIC HARNEY PEAK GRANITE	USGS Reston	"Cole, J.C."	75 08	Accurate to within 5 minute (~5 miles)	"HARNEY PEAK, BLACK HILLS"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
587	-103.866667	43.200000	103	52	0	W	43	12	0	N	US	SD	Fall River	250000	Hot Springs	Core or cutting	Schist	FINE- TO MEDIUM-GRAINED GARNET-BIOTITE-FELDSPAR-QUARTZ SCHIST; FELDSPAR RB/SR IS 0.5 BY X-RAY FLUORESCENCE	USGS Reston	"Cole, J.C."	75 08	Accurate to within 5 minute (~5 miles)	"BLACK HILLS ORDNANCE DEPOT (PROVO) NO. 1, 3950-3999 FOOT INTERVAL, SEC. 3, T10S, R2E"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
588	-100.108333	45.283333	100	6	30	W	45	17	0	N	US	SD	Walworth	250000	McIntosh	Core or cutting	Schist	FINE-GRAINED BIOTITE-QUARTZ-ANDESINE SCHIST	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"PRAY NO. 1 KRANZLER, 3808 FOOT DEPTH; SEC. 14, T121N, R77W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
589	-100.233333	44.991667	100	14	0	W	44	59	30	N	US	SD	Potter	250000	Pierre	Core or cutting	Gneiss	BIOTITE-QUARTZ-OLIGOCLASE-HORNBLENDE GNEISS	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"CARTER NO. 1 WHITLOCK-SMITH, 3580-3611 FOOT INTERVAL; SEC. 34, T118N, R78W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
590	-100.933333	44.541667	100	56	0	W	44	32	30	N	US	SD	Stanley	250000	Pierre	Core or cutting	Adamellite	COARSE-GRAINED	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"SHAMROCK NO. 2 BARRICK, 4062-4070 FOOT INTERVAL; SEC. 23, T7N, R26E"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
591	-99.741667	43.144444	99	44	30	W	43	8	40	N	US	SD	Tripp	24000	Dallas NW	Core or cutting	Adamellite	MEDIUM- TO COARSE-GRAINED	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"GENERAL CRUDE NO. 1 SKIPPY, 2730-2750 FOOT INTERVAL; SEC. 5, T96N, R75W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
592	-99.958333	43.005556	99	57	30	W	43	0	20	N	US	SD	Tripp	250000	Mitchell	Core or cutting	Adamellite	COARSE-GRAINED	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"GENERAL CRUDE NO. 1 RURAL CREDIT, 2870-286 FOOT INTERVAL; SEC. 33, T95N, R77W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
593	-97.969444	45.712500	97	58	10	W	45	42	45	N	US	SD	Marshall	24000	Amherst	Core or cutting	Adamellite	MEDIUM-GRAINED	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"HARVEY CARR FARM WELL 927-927.2 FOOT INTERVAL; SEC. 19, T126N, R59W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
594	-96.525000	45.216667	96	31	30	W	45	13	0	N	US	SD	Grant	250000	Milbank	Quarry	Granite	"ORTONVILLE GRANITE; RED, COARSE, PORPHYRITIC GRANITE WITH QUARTZ DIORITE GNEISS INCLUSIONS AND ALIGNED MICROCLINE PHENOCRYSTS"	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"NEAR MILBANK; QUARRY NO. 1, HUNTER GRANITE CO., 1 MILE SOUTH OF U.S. HIGHWAY 12, BETWEEN MILBANK AND ORTONVILLE, MINN.; SEC. 13, T120N, R48W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
595	-96.516667	45.208333	96	31	0	W	45	12	30	N	US	SD	Grant	250000	Milbank	Quarry	Granite	PEGMATITIC PHASE	USGS Reston	"Cole, J.C."	75 08	Accurate to within 5 minute (~5 miles)	"HUNTER GRANITE QUARRY NO. 1, NEAR MILBANK"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
596	-97.300000	44.250000	97	18	0	W	44	15	0	N	US	SD	Kingsbury	250000	Watertown	Core or cutting	Quartz latite	PORPHYRY	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"HINKER NO. 1 GERALD TONSAGER, 1041 FOOT DEPTH; SEC. 15, T109N, R54W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
597	-97.916667	44.150000	97	55	0	W	44	9	0	N	US	SD	Sanborn	125000	De Smet	Core or cutting	Felsite porphyry	FINE- TO MEDIUM-GRAINED; SERICITIZED	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"JOE GRASSELL FARM WELL, 687-730 FOOT INTERVAL; SEC. 21, T108N, R59W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
598	-98.102778	43.694444	98	6	10	W	43	41	40	N	US	SD	Davison 	24000	Mitchell	Core or cutting	Granodiorite	"MEDIUM- TO COARSE-GRAINED; K-FELDSPAR RB/SR = 0.1, WHOLE-ROCK RB/SR = 0.2 BY X-RAY FLUORESCENCE"	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"SMITH AND DAVISON WELL, 500 FOOT DEPTH; SEC. 25, T103N, R61W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
599	-96.558333	42.611111	96	33	30	W	42	36	40	N	US	SD	Union	24000	Jefferson	Core or cutting	Adamellite	MEDIUM-GRAINED	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"SIOUX VALLEY NO. 1 LA FLEUR, 2416-2418 FOOT INTERVAL; SEC. 18, T90N, R48W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
600	-104.855556	39.850000	104	51	20	W	39	51	0	N	US	CO	Adams	24000	Sable	Core or cutting	Gneiss	"BIOTITE-MICROCLINE GNEISS; K-FELDSPAR RB/SR = 0.1, WHOLE ROCK RB/SR = 0.1 BY X-RAY FLUORESCENCE"	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"ROCKY MOUNTAIN ARSENAL TEST HOLE, 11,979 FOOT DEPTH; SEC. 26, T2S, R67W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
601	-103.344444	40.727778	103	20	40	W	40	43	40	N	US	CO	Logan	24000	Atwood NE	Core or cutting	Gneiss	FINE-GRAINED BIOTITE-PLAGIOCLASE-QUARTZ GNEISS	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"SHELL NO. A-16 GREEN, 7744-7802 FOOT INTERVAL; SEC. 30, T9N, R53W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
602	-103.308333	40.661111	103	18	30	W	40	39	40	N	US	CO	Logan	24000	Atwood NE	Core or cutting	Granodiorite	MEDIUM-GRAINED; K-FELDSPAR; RB/SR = 0.1 BY X-RAY FLUORESCENCE	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"SHELL NO. 2-B STATE, 7670-7735 FOOT INTERVAL; SEC. 16, T8N, R53W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
603	-102.741667	40.300000	102	44	30	W	40	18	0	N	US	CO	Yuma	250000	Sterling	Core or cutting	Adamellite	FINE- TO MEDIUM-GRAINED	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"SHELL NO. 1 OLSEN, 6665-6683 FOOT INTERVAL; SEC 21, T4N, R48W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
604	-103.666667	42.916667	103	40	0	W	42	55	0	N	US	NE	Sioux	250000	Alliance	Core or cutting	Adamellite	MEDIUM-GRAINED; INCIPIENT CATACLASIS	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"AMERADA NO. 1 FEDERAL-GEISER, 4558-4561.5 FOOT INTERVAL; SEC. 10, T34N, R54W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
605	-99.375000	42.644444	99	22	30	W	42	38	40	N	US	NE	Rock	24000	Carn	Core or cutting	Schist	FINE-GRAINED MUSCOVITE-BIOTITE-OLIGOCLASE-QUARTZ SCHIST	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"HUTTON NO. 1  COPPLE, 2770-2815 FOOT INTERVAL; SEC. 24, T31N, R18W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
606	-99.000000	42.383333	99	0	0	W	42	23	0	N	US	NE	Holt	250000	O'Neill	Core or cutting	Granodiorite	MEDIUM-GRAINED; GNEISSIC	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"HUNT NO. 1 DOBROVOLNY, 2865-2866 FOOT INTERVAL; SEC. 23, T28N, R15W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
607	-98.094444	41.863889	98	5	40	W	41	51	50	N	US	NE	Boone	24000	Petersburg	Core or cutting	Schist	FINE-GRAINED MUSCOVITE-BIOTITE-QUARTZ-FELDSPAR SCHIST	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"CARTER NO. 7 STRATIGRAPHIC TEST, 2965-2976 FOOT INTERVAL; SEC. 23, T22N, R7W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
608	-99.733333	42.033333	99	44	0	W	42	2	0	N	US	NE	Blaine	250000	O'Neill	Core or cutting	Granite	FINE- TO COARSE-GRAINED; PORPHYRITIC	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"KINGWOOD NO. 1 SPENCER, 3349-3354 FOOT INTERVAL; SEC. 22, T24N, R21W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
609	-101.708333	42.041667	101	42	30	W	42	2	30	N	US	NE	Grant	62500	Whitman	Core or cutting	Adamellite	MEDIUM-GRAINED	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"BYRD AND FROST NO. 1 ABBOTT, 4036-4040 FOOT INTERVAL; SEC. 22, T24N, R38W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
610	-101.550000	41.997222	101	33	0	W	41	59	50	N	US	NE	Grant	62500	Spring Valley	Core or cutting	Gneiss	FINE- TO MEDIUM-GRAINED QUARTZ-MICROCLINE-OLIGOCLASE GNEISS	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"TEXACO-SEABOARD NO. 1 LOWE, 4081-4082 FOOT INTERVAL; SEC. 1, T23N, R38W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
611	-101.011111	41.516667	101	0	40	W	41	31	0	N	US	NE	Mc Pherson	62500	Wright Valley	Core or cutting	Gneiss	FINE-GRAINED BIOTITE-QUARTZ-MICROCLINE-OLIGOCLASE GNEISS	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"OHIO NO. 1, DOYLE, 4112-4113 FOOT INTERVAL; SEC. 21, T18N, R32W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
612	-102.275000	41.316667	102	16	30	W	41	19	0	N	US	NE	Garden	24000	Barn Butte	Core or cutting	Metagabbro	MEDIUM-GRAINED CLINOPYROXENE-HORNBLENDE METAGABBRO	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"PURE NO. 1 BLANCHARD, 5845-5863 FOOT INTERVAL; SEC. 32, T16N, R43W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
613	-101.766667	40.583333	101	46	0	W	40	35	0	N	US	NE	Chase	250000	McCook	Core or cutting	Gneiss	FINE-GRAINED BIOTITE-MICROCLINE-PLAGIOCLASE (SERICITIZED) GNEISS	USGS Reston	"Cole, J.C."	75 08	Accurate to within 5 minute (~5 miles)	"OHIO NO. 1 BREMER, 5374-5379 FOOT INTERVAL; SEC. 5, T7N, R39W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
614	-101.183333	40.750000	101	11	0	W	40	45	0	N	US	NE	Lincoln	250000	McCook	Core or cutting	Adamellite	MEDIUM-GRAINED; GNEISSIC	USGS Reston	"Cole, J.C."	75 08	Accurate to within 5 minute (~5 miles)	"SKELLY NO. 1 CLEMENS, 4649-4650 FOOT INTERVAL; SEC. 11, T9N, R34W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
615	-101.216667	40.650000	101	13	0	W	40	39	0	N	US	NE	Hayes	250000	McCook	Core or cutting	Adamellite	FINE- TO COARSE-GRAINED; GNEISSIC; CATACLASIS	USGS Reston	"Cole, J.C."	75 08	Accurate to within 5 minute (~5 miles)	"CITIES SERVICE NO. 1 LEU, 4919 FOOT DEPTH; SEC. 17, T8N, R34W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
616	-100.647222	40.822222	100	38	50	W	40	49	20	N	US	NE	Lincoln	24000	Wellfleet	Core or cutting	Schist	FINE- TO MEDIUM-GRAINED HORNBLENDE-BIOTITE-QUARTZ-LABRADORITE SCHIST	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"BURCH NO. 1 VOTAW; 4190-4220 FOOT INTERVAL; SEC. 20, T10N, R29W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
617	-100.011111	40.636111	100	0	40	W	40	38	10	N	US	NE	Frontier	24000	Eustis	Core or cutting	Schist	FINE-GRAINED BIOTITE-HORNBLENDE-ANDESINE-QUARTZ SCHIST	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"PANHANDLE NO. 1-26 TORBERER, 3430-3450 FOOT INTERVAL; SEC. 26, T8N, R24W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
618	-100.216667	40.666667	100	13	0	W	40	40	0	N	US	NE	Frontier	24000	Farnam	Core or cutting	Schist	FINE-GRAINED BIOTITE-FELDSPAR-QUARTZ SCHIST	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"PANHANDLE NO. 1 BROCKMEIR, 3450-3526 FOOT INTERVAL; SEC. 13, T8N, R26W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
619	-100.791667	40.416667	100	47	30	W	40	25	0	N	US	NE	Hayes	24000	Burger Canyon East	Core or cutting	Gneiss	FINE-GRAINED MUSCOVITE-BIOTITE-ALBITE-MICROCLINE-QUARTZ GNEISS	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"SUPERIOR NO. 28-12 LITTLE, 4265-4266 FOOT INTERVAL; SEC. 12, T5N, R31W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
620	-100.958333	40.025000	100	57	30	W	40	1	30	N	US	NE	Hitchcock	24000	Culbertson SW	Core or cutting	Schist	FINE-GRAINED BIOTITE-OLIGOCLASE-QUARTZ SCHIST	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"CLAUSSEN NO. 1 ROOSE, 4700-4727 FOOT INTERVAL; SEC. 29, T1N, R32W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
621	-100.541667	40.166667	100	32	30	W	40	10	0	N	US	NE	Red Willow	24000	McCook East	Core or cutting	Adamellite	MEDIUM- TO COARSE-GRAINED	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"LEBEN NO. 1 LAUER, 3650-3657 FOOT INTERVAL; SEC. 1, T2N, R29W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
622	-100.208333	40.083333	100	12	30	W	40	5	0	N	US	NE	Furnas	24000	Shippee	Core or cutting	Adamellite	COARSE-GRAINED	USGS Reston	"Cole, J.C."	75 08	Accurate to within 5 minute (~5 miles)	"TENNECO NO. 1 LEMASTER, 3410 FOOT DEPTH; SEC. 31, T2N, R25W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
623	-99.377778	40.908333	99	22	40	W	40	54	30	N	US	NE	Buffalo	24000	Miller	Core or cutting	Granofels	FINE-GRAINED QUARTZ-CHLORITE-BIOTITE-ALBITE GRANOFELS	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"OHIO NO. 1 TAYLOR, 4020 FOOT DEPTH; SEC. 21, T11N, R18W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
624	-99.377778	40.908333	99	22	40	W	40	54	30	N	US	NE	Buffalo	24000	Miller	Core or cutting	Granodiorite	FINE- TO COARSE-GRAINED; BIOTITE CHLORITIZED; PLAGIOCLASE SERICITIZED	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"OHIO NO. 1 TAYLOR, 4040 FOOT DEPTH; SEC 21, T11N, R18W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
625	-99.400000	40.736111	99	24	0	W	40	44	10	N	US	NE	Buffalo	24000	Elm Creek West	Core or cutting	Gneiss	"FINE-GRAINED BIOTITE-HORNBLENDE-FELDSPAR GNEISS; CATACLASIS; FELDSPAR RB/SR = 0.1, WHOLE ROCK RB/SR = 0.2 BY X-RAY FLUORESCENCE"	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"OHIO NO. 1 PETTETT, 3892 FOOT DEPTH; SEC. 20, T9N, R18W"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
626	-96.530556	41.066667	96	31	50	W	41	4	0	N	US	NE	Saunders	24000	Wahoo SE	Core or cutting	Basalt	"SOME CHLORITE, SERPENTINE"	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"CHESTER WILLIAMS NO. 1 RADENSLABEN, 1903 FOOT DEPTH; SEC. 28, T13N, R8E"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
627	-96.019444	40.054167	96	1	10	W	40	3	15	N	US	NE	Pawnee	24000	Dubois	Core or cutting	Adamellite	FINE- TO MEDIUM-GRAINED; GNEISSIC; CATACLASIS	USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	"THORNE NO. 1 ROHLMIER, 538-539.5 FOOT INTERVAL; SEC. 13, T1N, R12E"	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
628	-88.083333	45.783333	88	5	0	W	45	47	0	N	US	WI	Florence	24000	Iron Mountain	Outcrop or artificial surface exposure	Granite		USGS Reston	"Cole, J.C."	75 08	Accurate to within 30 minutes (~30 miles)	NEAR AURORA	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
629	-88.483333	45.183333	88	29	0	W	45	11	0	N	US	WI	Oconto	48000	Mountain	Outcrop or artificial surface exposure	Rhyolite porphyry		USGS Reston	"Cole, J.C."	75 08	Accurate to within 30 minutes (~30 miles)	NEAR MOUNTAIN	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
630	-88.859722	43.845833	88	51	35	W	43	50	45	N	US	WI	Green Lake	62500	Ripon	Quarry	Rhyolite porphyry		USGS Reston	"Cole, J.C."	75 08	Accurate to within 1 minute (~1 mile)	GREEN LAKE GRANITE COMPANY QUARRY	"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
631	-88.875000	43.125000	88	52	30	W	43	7	30	N	US	WI	Jefferson	62500	Waterloo	Outcrop or artificial surface exposure	Quartzite	WATERLOO QUARTZITE	USGS Reston	"Cole, J.C."	75 08	Accurate to within 30 minutes (~30 miles)		"Goldich, S.S., Lidiak, E.G., Hedge, C.E., and Walthall, F.G., 1966, Geochronology Of The Midcontinent Region, United States, Part II, Northern Area: Journal of Geophysical Research, v. 71, p. 5389-5408"	
632	-91.579167	40.458333	91	34	45	W	40	27	30	N	US	MO	Clark	24000	Wayland	Core or cutting	Diorite	BIOTITE-RICH SELVAGE SEPARATING QUARTZ VEIN FROM DIORITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"ST. JOSEPH LEAD CO. NO. 1 ST. FRANCISVILLE, 2999 FOOT DEPTH; SEC. 5, T65N, R6W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
633	-91.579167	40.458333	91	34	45	W	40	27	30	N	US	MO	Clark	24000	Wayland	Core or cutting	Aplite	"NO DETERMINATION ON METADACITE; FELDSPAR RB/SR = 0.3, WHOLE ROCK RB/SR =0.3 BY X-RAY FLUORESCENCE"	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"ST. JOSEPH LEAD CO. NO. 1 ST. FRANCISVILLE, 2959 FOOT DEPTH; SEC. 5, T65N, R6W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
634	-91.741667	39.133333	91	44	30	W	39	8	0	N	US	MO	Audrain	62500	Wellsville	Core or cutting	Metadacite	CONTAINS BIOTITE AND PLAGIOCLASE; INTRUDED BY PEGMATITE OF SAMPLE MO4	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"ST. JOSEPH LEAD CO. CORE HOLE, DEPTH UNKNOWN; SEC. 6, T50N, R7W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
635	-91.741667	39.133333	91	44	30	W	39	8	0	N	US	MO	Audrain	62500	Wellsville	Core or cutting	Pegmatite	INTRUDES METADACITE OF SAMPLE MO3	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"ST. JOSEPH LEAD CO. CORE HOLE, DEPTH UNKNOWN; SEC. 6, T50N, R7W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
636	-90.900000	38.875000	90	54	0	W	38	52	30	N	US	MO	St. Charles	62500	Troy	Core or cutting	Diorite	FINE GRAINED	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"NATIONAL LEAD X-1 WENTZVILLE, 3370.5-3371.5 FOOT INTERVAL; SEC. 34, T48N, R1E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
637	-90.269444	38.833333	90	16	10	W	38	50	0	N	US	MO	St. Louis	24000	Florissant	Core or cutting	Granite	MEDIUM-GRAINED ONE-FELDSPAR GRANITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"LECLEDE GAS CO. NO. 3 LANGE, 3230 FOOT DEPTH; SEC. 7, T47N, R7E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
638	-90.741667	38.616667	90	44	30	W	38	37	0	N	US	MO	Franklin	24000	Eureka	Core or cutting	Rhyolite	PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"ST. JOSEPH LEAD CO., DEPTH UNKNOWN; SEC. 25, T45N, R2E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
639	-91.050000	38.111111	91	3	0	W	38	6	40	N	US	MO	Washington	24000	Anthonies Mill	Mine	Rhyolite	PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"PEA RIDGE MINE; SEC. 8, T39N, R1W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
640	-91.050000	38.111111	91	3	0	W	38	6	40	N	US	MO	Washington	24000	Anthonies Mill	Mine	Aplite		USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"PEA RIDGE MINE; SEC. 8, T39N, R1W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
641	-90.791667	37.747222	90	47	30	W	37	44	50	N	US	MO	Washington	24000	Banner	Outcrop or artificial surface exposure	Granite		USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SEC. 14, T35N, R2E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
642	-90.704167	37.633333	90	42	15	W	37	38	0	N	US	MO	Iron	24000	Graniteville	Quarry	Pegmatite		USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SEC. 22, T34N, R3E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
643	-90.775000	37.708333	90	46	30	W	37	42	30	N	US	MO	Iron	24000	Banner	Core or cutting	Granite	MEDIUM-GRAINED ONE-FELDSPAR PORPHYRITIC GRANITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 5 minute (~5 miles)	"AMERICAN ZINC LEAD AND SMELTING CO. CORE HOLE NO. 11, 680 FOOT DEPTH; SEC. 11, T34N, R2E; GRANITEVILLE"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
644	-90.811111	37.555556	90	48	40	W	37	33	20	N	US	MO	Reynolds	24000	Johnson Shut-In	Outcrop or artificial surface exposure	Granite	MUNGER GRANITE PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 5 minute (~5 miles)	"SEC. 21, T33N, R2E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
645	-90.725000	37.308333	90	43	30	W	37	18	30	N	US	MO	Iron	24000	Des Arc	Outcrop or artificial surface exposure	Rhyolite	ANNAPOLIS RHYOLITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SEC. 4, T30N, R3E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
646	-92.795833	38.183333	92	47	45	W	38	11	0	N	US	MO	Camden	24000	Sunrise Beach	Core or cutting	Granite	COARSE-GRAINED	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"ST. JOSEPH LEAD CO.; SEC. 34, T40N, R17W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
647	-94.150000	37.750000	94	9	0	W	37	45	0	N	US	MO	Vernon	24000	Dederick	Core or cutting	Granite	COARSE-GRAINED BIOTITE ADAMELLITE(?)	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"ST. JOSEPH LEAD CO.; SEC. 6, T34N, R29W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
648	-92.527778	37.012500	92	31	40	W	37	0	45	N	US	MO	Douglas	24000	Mansfield	Core or cutting	Diorite	MEDIUM-GRAINED BIOTITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"ST. JOSEPH LEAD CO.; SEC. 24, T27N, R15W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
649	-92.708333	37.900000	92	42	30	W	37	54	0	N	US	MO	Camden	62500	Stoutland	Outcrop or artificial surface exposure	Pegmatite		USGS Reston	"Cole, J.C."	75 09	Accurate to within 30 minutes (~30 miles)	NEAR DECATURVILLE	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
650	-101.655556	39.069444	101	39	20	W	39	4	10	N	US	KS	Wallace	62500	Harris Draw	Core or cutting	Schist	HEMATITE-QUARTZ-MICA SCHIST	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SINCLAIR PRAIRIE NO. 2 WALLACE INVEST. CO., 5550-5568 AND 5571-5580 FOOT INTERVALS; SEC. 28,T11S, R39W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
651	-101.583333	38.838889	101	35	0	W	38	50	20	N	US	KS	Wallace	62500	Wallace	Core or cutting	Granite	GNEISSIC BIOTITE GRANITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"TEXACO NO. 1 PIERCE, 6050-6058 FOOT INTERVAL; SEC. 18, T14S, R38W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
652	-100.938889	38.750000	100	56	20	W	38	45	0	N	US	KS	Logan	24000	Lake McBride	Core or cutting	Granite	BIOTITE GRANITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"ALMA NO. 1 WATCHORN, 5717-5750 FOOT INTERVAL; SEC. 13, T15S, R33W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
653	-99.116667	39.166667	99	7	0	W	39	10	0	N	US	KS	Rooks	250000	Beloit	Core or cutting	Granite	GNEISSIC BIOTITE-HORNBLENDE GRANITE; K-FELDSPAR RB/SR = 0.6 BY X-RAY FLUORESCENCE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 5 minute (~5 miles)	"CITIES SERVICE NO. 4 'U' SMITH, 3780-3795 FOOT INTERVAL; SEC. 15, T10S, R16W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
654	-98.458333	38.850000	98	27	30	W	38	51	0	N	US	KS	Ellsworth	24000	Wilson	Core or cutting	Granite	GNEISSIC BIOTITE GRANITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"FRANKFORT NO. 1 KUCK; 4294-4315 FOOT INTERVAL; SEC. 8, T14S, R10W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
655	-98.800000	38.658333	98	48	0	W	38	39	30	N	US	KS	Barton	24000	Susank	Core or cutting	Quartzite	SLIGHTLY SHEARED BIOTITE QUARTZITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SHELL NO. 4 'A' EHRLICH; 3324-3347 FOOT INTERVAL; SEC. 18, T16S, R13W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
656	-95.966667	39.876389	95	58	0	W	39	52	35	N	US	KS	Nemaha	24000	Bern	Core or cutting	Granite	BIOTITE GRANITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"TEXAS NO. 1 MURDOCK, 840-844 FOOT INTERVAL; SEC. 16, T2S, R13E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
657	-96.288889	39.791667	96	17	20	W	39	47	30	N	US	KS	Marshall	24000	Axtell	Core or cutting	Adamellite	MEDIUM-GRAINED BIOTITE ADAMELLITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SHAR-ALAN NO. 1 OLSON, 925-955 FOOT INTERVAL; SEC. 15, T3S, R10E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
658	-96.508333	39.541667	96	30	30	W	39	32	30	N	US	KS	Pottawatomie	24000	Blue Rapids SE	Core or cutting	Gneiss	FINE- TO MEDIUM-GRAINED BIOTITE-FELDSPAR-QUARTZ GNEISS	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SHAWVER-ARMOUR NO. 1 BUDENBENDER, 1990-1995 FOOT INTERVAL; SEC. 10, T6S, R8E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
659	-96.597222	39.386111	96	35	50	W	39	23	10	N	US	KS	Pottawatomie	24000	Olsburg	Core or cutting	Adamellite	MUSCOVITE-BIOTITE ADAMELLITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"ADAIR NO. 1 STOFFER, 2290-2302 FOOT INTERVAL; SEC. 1, T8S, R7E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
660	-96.933333	39.344444	96	56	0	W	39	20	40	N	US	KS	Riley	24000	Bala	Core or cutting	Meta-arkose hornfels	FINE-GRAINED ALBITE-MICROCLINE-QUARTZ META-ARKOSE; UNDERLIES BASALT (PRESUMABLY KEWEENAWAN GROUP)	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"ARKANSAS FUEL NO. 1 MARTIN, 2930-2940 FOOT INTERVAL; SEC. 24, T8S, R4E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
661	-96.433333	39.238889	96	26	0	W	39	14	20	N	US	KS	Pottawatomie	24000	St. George	Core or cutting	Adamellite	MEDIUM-GRAINED FOLIATED BIOTITE (CHLORITIZED) ADAMELLITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"FRANCIS-KAISER NO. 1 DEKAT; 2035-2042 FOOT INTERVAL; SEC. 29, T9S, R9E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
662	-96.472222	39.255556	96	28	20	W	39	15	20	N	US	KS	Pottawatomie	24000	Flush	Core or cutting	Adamellite	COARSE-GRAINED BIOTITE ADAMELLITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"FRANCIS-KAISER NO. 1 UNTERBERGER, 2150-2160 FOOT-INTERVAL; SEC. 24, T9S, R8E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
663	-96.379167	38.658333	96	22	45	W	38	39	30	N	US	KS	Morris	24000	Council Grove	Core or cutting	Quartzite	MICACEOUS	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"LESLIE NO. 1A MCCONNELL, 3145 FOOT DEPTH; SEC. 14, T16S, R9E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
664	-96.700000	38.525000	96	42	0	W	38	31	30	N	US	KS	Morris	250000	Hutchinson	Core or cutting	Granite	GNEISSIC	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"STANOLIND NO. 1 VEAL, 1960-2005 FOOT INTERVAL; SEC. 30, T17S, R7E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
665	-96.616667	38.350000	96	37	0	W	38	21	0	N	US	KS	Chase	250000	Hutchinson	Core or cutting	Gneiss	GRANITIC GNEISS	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"AMERADA NO. 1 LOSTUTTER, 2815-2825 FOOT INTERVAL; SEC. 1, T20S, R7E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
666	-96.833333	38.050000	96	50	0	W	38	3	0	N	US	KS	Butler	24000	Florence SE	Core or cutting	Gneiss	GRANITIC GNEISS	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"CITIES SERVICE NO. 1 CHURCH, 2490-2525 FOOT INTERVAL; SEC. 13, T23S, R5E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
667	-96.961111	37.805556	96	57	40	W	37	48	20	N	US	KS	Butler	24000	El Dorado SW	Core or cutting	Granite		USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"GULF-GROSS NO. 1 WILLIAMS-FORGY, 2808-2824 FOOT INTERVAL; SEC. 11, T26S, R4E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
668	-98.455556	37.666667	98	27	20	W	37	40	0	N	US	KS	Kingman	24000	Cunningham	Core or cutting	Granite	CHLORITIZED BIOTITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SKELLY NO. 1 'A' MILES, 4950 FOOT DEPTH; SEC. 30, T27S, R10W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
669	-97.175000	37.254167	97	10	30	W	37	15	15	N	US	KS	Sumner	24000	Oxford	Core or cutting	Granite		USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"LARIO NO. 13 'A' WENRICH, 3645-3720 FOOT INTERVAL; SEC. 23, T32S, R2E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
670	-95.750000	37.750000	95	45	0	W	37	45	0	N	US	KS	Woodson	24000	Rose	Float	Granite	PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 5 minute (~5 miles)	"ROSE DOME, SEC. 13, T26S, R15E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
671	-101.291667	37.100000	101	17	30	W	37	6	0	N	US	KS	Stevens	250000	Dodge City	Core or cutting	Granite		USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"MOBIL NO. 1 CUNNINGHAM, 8714 FOOT DEPTH; SEC. 13, T34S, R37W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
672	-102.850000	36.944444	102	51	0	W	36	56	40	N	US	OK	Cimarron	24000	Kenton NE	Core or cutting	Granite	MICROGRAPHIC MICROCLINE-PERTHITE GRANITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"OHIO NO. 1B SCHOOL LAND, 6501-6503 FOOT INTERVAL; SEC. 33, T6N, R2E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
673	-97.225000	36.916667	97	13	30	W	36	55	0	N	US	OK	Kay	24000	Peckham	Core or cutting	Adamellite	COARSE-GRAINED; SLIGHTLY ALTERED	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"ANDERSON-PRICHARD NO. 28 WELSH, 4406-4407.5 FOOT INTERVAL; SEC. 17, T28N, R1E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
674	-96.983333	36.430556	96	59	0	W	36	25	50	N	US	OK	Pawnee	62500	Pawnee	Core or cutting	Rhyolite	PORPHYRY; RECRYSTALLIZED(?) MATRIX	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"PORTER NO. 20 MILLER, 4686-4691 FOOT INTERVAL; SEC. 33, T23N, R3E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
675	-96.469444	36.283333	96	28	10	W	36	17	0	N	US	OK	Pawnee	24000	Cleveland	Core or cutting	Rhyolite	PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SINCLAIR NO. 46 JONES, 2944 FOOT DEPTH; SEC. 20, T21N, R8E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
676	-96.291667	36.369444	96	17	30	W	36	22	10	N	US	OK	Osage	24000	New Prere 	Core or cutting	Microgranite	PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"NORBLA OIL NO. 2 LYMAN, 2972 FOOT DEPTH; SEC. 24, T22N, R9E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
677	-96.483333	36.616667	96	29	0	W	36	37	0	N	US	OK	Osage	250000	Enid	Core or cutting	Microgranite	PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"TEXACO NO. 1 KOHPAY, 2345-2346 FOOT INTERVAL; SEC. 29, T25N, R8E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
678	-96.147222	36.572222	96	8	50	W	36	34	20	N	US	OK	Osage	24000	Barnsdale	Core or cutting	Rhyolite	PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"CITIES SERVICE NO. 1 SALT WATER DISPOSAL WELL, 2804-2821 FOOT INTERVAL; SEC. 8, T24N, R11E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
679	-96.238889	35.962500	96	14	20	W	35	57	45	N	US	OK	Creek	62500	Kiefer	Core or cutting	Granite	MICROGRAPHIC PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"CENTRAL COMMERCIAL NO. 3 HAY, 4250-4282 FOOT INTERVAL; SEC. 10, T17N, R10E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
680	-95.550000	36.255556	95	33	0	W	36	15	20	N	US	OK	Rogers	24000	Claremore	Core or cutting	Granite	MICROGRAPHIC PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"DANIELS AND SMITH NO. 2 VIERHILLER, 2701-2787 FOOT INTERVAL; SEC. 36, T21N, R16E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
681	-95.050000	36.387500	95	3	0	W	36	23	15	N	US	OK	Mayes	24000	Spavinaw	Outcrop or artificial surface exposure	Granite	SPAVINAW GRANITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 5 minute (~5 miles)	"SEC. 15, T22N, R21E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
682	-94.577778	35.413889	94	34	40	W	35	24	50	N	US	OK	Sequoyah	24000	Muldrow	Core or cutting	Rhyolite	PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"OKLAHOMA NAT. GAS NO. 1 STOCKTON, 6145-6146 FOOT INTERVAL; SEC. 20, T11N, R26E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
683	-94.883333	35.137500	94	53	0	W	35	8	15	N	US	OK	Le Flore	24000	McCurtain	Core or cutting	Granite	HORNBLENDE GRANITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"PAN AMERICAN NO. 1 TACKETT UNIT, 9248-9272 FOOT INTERVAL; SEC. 28, T8N, R23E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
684	-97.450000	35.413889	97	27	0	W	35	24	50	N	US	OK	Oklahoma	24000	Midwest City	Core or cutting	Gneiss	SHEARED GRANITIC GNEISS	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"CITIES SERVICE NO. 5 FARLEY, DEPTH UNKNOWN; SEC. 19, T11N, R2W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
685	-96.908333	34.833333	96	54	30	W	34	50	0	N	US	OK	Pontotoc	24000	Stratford	Core or cutting	Rhyolite	PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"TIDEWATER NO. 1 WOOD, 6026 FOOT DEPTH; SEC. 7, T4N, R4E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
686	-96.804167	34.369444	96	48	15	W	34	22	10	N	US	OK	Johnston	24000	Troy	Outcrop or artificial surface exposure	Granite	MEDIUM- TO COARSE-GRAINED TROY GRANITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"ARBUCKLE MOUNTAINS, SEC 20, T2S, R5E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
687	-97.150000	34.413889	97	9	0	W	34	24	50	N	US	OK	Murray	24000	Turner Falls	Outcrop or artificial surface exposure	Porphyry	COLBERT PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"ARBUCKLE MOUNTAINS, SEC. 1, T2S, R1E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
688	-97.270833	34.479167	97	16	15	W	34	28	45	N	US	OK	Murray	24000	Fox NE	Outcrop or artificial surface exposure	Porphyry	COLBERT PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"ARBUCKLE MOUNTAINS, SEC. 10, T1S, R1W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
689	-97.850000	33.987500	97	51	0	W	33	59	15	N	US	OK	Jefferson	24000	Fleetwood	Core or cutting	Granite	COARSE-GRAINED; MORTAR STRUCTURE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SINCLAIR NO. 1 PETERSON, 4663-4666 FOOT INTERVAL; SEC. 32, T6S, R6W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
690	-98.116667	34.616667	98	7	0	W	34	37	0	N	US	OK	Stephens	24000	Nellie	Core or cutting	Rhyolite	PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"CARTER NO. 1 EMMONS, 7227-7229 FOOT INTERVAL; SEC. 26, T2N, R9W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
691	-99.977778	35.183333	99	58	40	W	35	11	0	N	US	OK	Beckham	62500	Erick	Core or cutting	Diorite	FINE-GRAINED	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"BARNES NO. 1 GAMBLE, 3230-3400 FOOT INTERVAL; SEC. 7, T8N, R26W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
692	-102.166667	35.883333	102	10	0	W	35	53	0	N	US	TX	Hartley	24000	Moran Ranch	Core or cutting	Rhyolite	PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"STANDARD NO. 1 JOHNSON, 8957 FOOT INTERVAL; SEC. 375, BLK. 44, H AND TC SURV."	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
693	-101.383333	35.550000	101	23	0	W	35	33	0	N	US	TX	Carson	24000	McBride	Core or cutting	Gneiss	AMPHIBOLE GNEISS	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"GULF NO. 69 BURNETT, 6360 FOOT INTERVAL; SEC. 106, BLK. 5, I AND GNRR SURV."	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
694	-101.091667	35.450000	101	5	30	W	35	27	0	N	US	TX	Carson	24000	Kingsmill	Core or cutting	Granite	MEDIUM-GRAINED	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"TEXOMA PROD. NO. 2 AEBERSOLD, 3054 FOOT INTERVAL; SEC. 181, BLK. 3, I AND GNRR SURV."	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
695	-101.875000	34.916667	101	52	30	W	34	55	0	N	US	TX	Randall	62500	Canyon	Core or cutting	Rhyolite	PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 5 minute (~5 miles)	"FRANKFORT NO. 1 HIX, 8486 FOOT INTERVAL; SEC. 179, BLK. 6, I AND GNRR SURV."	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
696	-102.416667	35.416667	102	25	0	W	35	25	0	N	US	TX	Oldham	24000	Vega North	Core or cutting	Granite	MICROGRAPHIC PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 5 minute (~5 miles)	"SHELL NO. 1 ALAMOSA RANCH, 6712 FOOT INTERVAL; LOT 41, BLK. H-3, CL SURVEY"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
697	-102.966667	34.866667	102	58	0	W	34	52	0	N	US	TX	Deaf Smith	24000	Garcia Lake	Core or cutting	Rhyolite	PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"HUMBLE NO. 1 REINAUER, 7898 FOOT INTERVAL; SEC. 7, T2N, R1E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
698	-102.558333	34.741667	102	33	30	W	34	44	30	N	US	TX	Parmer	24000	Summerfield	Core or cutting	Diabase	SWISHER GABBROIC TERRANE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"GULF NO. 1-A KELIEHOR, 9600-9610 FOOT INTERVAL; SEC. 5, LGE. 2, BROWN. SUBD., GREGG, CSL SURV."	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
699	-100.016667	34.608333	100	1	0	W	34	36	30	N	US	TX	Childress	62500	Loco	Core or cutting	Rhyolite	PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"STANOLIND NO. 1 STEVE OWENS, 7380-7384 FOOT INTERVAL; SEC. 81, BLK. 1, SPRR SURV."	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
700	-97.500000	33.833333	97	30	0	W	33	50	0	N	US	TX	Montague	24000	Bonita	Core or cutting	Granite	MORTAR STRUCTURE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 5 minute (~5 miles)	"D.M. ROSS NO. 1-A FIELDS, 3850 FOOT INTERVAL; J.L. GRAHAM SURVEY"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
701	-100.541667	32.077778	100	32	30	W	32	4	40	N	US	TX	Coke	24000	Sanco	Core or cutting	Gneiss	MEDIUM-GRAINED GRANITIC GNEISS	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SUN NO. 2 ARLEDGE, 7825 FOOT INTERVAL; SEC. 261, BLK. 1-A, H AND TCRR SURV."	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
702	-99.877778	31.830556	99	52	40	W	31	49	50	N	US	TX	Concho	24000	Millersview NW	Core or cutting	Granite	MEDIUM-GRAINED; GNEISSIC	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"HUMBLE NO. 1 ELLEN SIMS, 5020-5059 FOOT INTERVAL; WILHELM KRAMER SURVEY 309"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
703	-102.983333	31.916667	102	59	0	W	31	55	0	N	US	TX	Winkler	24000	Notrees NW	Core or cutting	Gneiss	MEDIUM-GRAINED GRANITIC GNEISS	USGS Reston	"Cole, J.C."	75 09	Accurate to within 5 minute (~5 miles)	"GULF NO. 92 KEYSTONE CATTLE CO., 10811 FOOT INTERVAL; SEC. 14, BLK. B-2, PLS SURV."	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
704	-102.970833	30.162500	102	58	15	W	30	9	45	N	US	TX	Brewster	24000	Housetop Mountains	Outcrop or artificial surface exposure	Gneiss	GRANITIC GNEISS BOULDER FROM HAYMOND BOULDER BEDS	USGS Reston	"Cole, J.C."	75 09	Accurate to within 0.1 minute (~500 feet)	HOUSETOP MOUNTAIN	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
705	-106.502778	31.866667	106	30	10	W	31	52	0	N	US	TX	El Paso	24000	Smeltertown	Outcrop or artificial surface exposure	Rhyolite	PORPHYRY; SLIGHTLY RECONSTITUTED MATRIX	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	FRANKLIN MOUNTAINS	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
706	-103.866667	36.783333	103	52	0	W	36	47	0	N	US	NM	Union	250000	Dalhart	Core or cutting	Granite		USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SIERRA GRANDE NO. 1 ROGERS, 2650-2800 FOOT INTERVAL; SEC. 4, T29N, R29E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
707	-104.661111	35.891667	104	39	40	W	35	53	30	N	US	NM	Mora	24000	Mogote Hills	Core or cutting	Granite	MEDIUM-GRAINED TWO-MICA GRANITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SHAMROCK NO. 1 MCARTHUR, 3200 FOOT INTERVAL; SEC. 12, T19N, R21E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
708	-104.694444	35.183333	104	41	40	W	35	11	0	N	US	NM	Guadalupe	24000	Bar Y Ranch	Core or cutting	Granite	MEDIUM-GRAINED; GNEISSIC	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"CITIES SERVICE NO. 1 DRIGGERS, 4567-4579 FOOT INTERVAL; SEC. 22, T11N, R21E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
709	-104.408333	34.916667	104	24	30	W	34	55	0	N	US	NM	Guadalupe	24000	Harben Lake	Core or cutting	Granite	MEDIUM-GRAINED; MICROGRAPHIC IN PART	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"HUSKY-GENERAL CRUDE NO. 1 HANTHETT STATE, 7228-7244 FOOT INTERVAL; SEC. 16, T8N, R24E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
710	-106.288889	33.866667	106	17	20	W	33	52	0	N	US	NM	Socorro	62500	Bingham	Core or cutting	Gneiss	MEDIUM-GRAINED GRANITIC GNEISS	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SUN NO. 1 BINGHAM STATE, 3139-3140 FOOT INTERVAL; SEC. 23, T5S, R5E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
711	-106.347222	33.561111	106	20	50	W	33	33	40	N	US	NM	Lincoln	62500	Mockingbird Gap	Outcrop or artificial surface exposure	Granite	COARSE-GRAINED TWO-MICA GRANITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SIERRA OSCURA; SEC. 5, T9S, R6E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
712	-106.616667	34.383333	106	37	0	W	34	23	0	N	US	NM	Socorro	24000	Becker	Outcrop or artificial surface exposure	Granite	MEDIUM-GRAINED GNEISSIC LOS PINOS GRANITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 5 minute (~5 miles)	"LOS PINOS MOUNTAINS; SEC. 23, T2N, R3E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
713	-106.608333	33.208333	106	36	30	W	33	12	30	N	US	NM	Sierra	62500	Black Top Mountain	Outcrop or artificial surface exposure	Gneiss	COARSE-GRAINED GRANODIORITIC GNEISS	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SAN ANDRES MOUNTAINS; SEC. 3, T13S, R4E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
714	-107.279167	32.895833	107	16	45	W	32	53	45	N	US	NM	Sierra	24000	Caballo	Outcrop or artificial surface exposure	Granite	MEDIUM-GRAINED GNEISSIC GRANITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"CABALLO MOUNTAINS; SEC. 29, T16S, R4W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
715	-106.963889	32.600000	106	57	50	W	32	36	0	N	US	NM	Dona Ana	62500	San Diego Mountain	Outcrop or artificial surface exposure	Gneiss	MEDIUM-GRAINED DIORITIC GNEISS	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SAN DIEGO MOUNTAIN; SEC. 5, T20S, R1W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
716	-106.525000	32.694444	106	31	30	W	32	41	40	N	US	NM	Dona Ana	62500	Bear Peak	Outcrop or artificial surface exposure	Gneiss	MEDIUM-GRAINED GRANITIC GNEISS; WHOLE-ROCK AND K-FELDSPAR RB/SR = 0.5 BY X-RAY FLUORESCENCE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SAN ANDRES MOUNTAINS; SEC. 3, T19S, R4E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
717	-104.363889	33.444444	104	21	50	W	33	26	40	N	US	NM	Chaves	24000	Comanche Spring	Core or cutting	Granite	"SHEARED, COARSE-GRAINED, CLEAR MICROCLINE AND ALTERED PLAGIOCLASE"	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"DEKALB NO. 1 LEWIS, 5633-5636 FOOT INTERVAL; SEC. 13, T10S, R25E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
718	-104.311111	33.133333	104	18	40	W	33	8	0	N	US	NM	Chaves	24000	Dexter East	Core or cutting	Schist	MEDIUM-GRAINED MUSCOVITE SCHIST	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"CONTINENTAL NO. 1 LANGFORD, 8001 FOOT INTERVAL; SEC. 2, T14S, R26E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
719	-103.530556	32.802778	103	31	50	W	32	48	10	N	US	NM	Lea	62500	Buckeye	Core or cutting	Granite	MEDIUM-GRAINED MICROGRAPHIC GRANITE PORPHYRY	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SOCONY MOBIL NO. 95 STATE BRIDGES, 13811-13813 FOOT INTERVAL; SEC. 26, T17S, R34E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
720	-103.152778	32.697222	103	9	10	W	32	41	50	N	US	NM	Lea	24000	Hobbs West	Core or cutting	Granite	COARSE-GRAINED	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"STANOLIND NO. 11-X STATE 'A', 8150-8160 FOOT INTERVAL; SEC. 4, T19S, R38E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
721	-103.144444	32.455556	103	8	40	W	32	27	20	N	US	NM	Lea	24000	Eunice	Core or cutting	Gneiss	FINE-GRAINED GRANITIC GNEISS; WHOLE-ROCK RB/SR = 0.5 BY X-RAY FLUORESCENCE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"CONTINENTAL NO. 1-E LOCKHART, 7791 FOOT INTERVAL; SEC. 27, T21S, R37E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
722	-108.797222	39.375000	108	47	50	W	39	22	30	N	US	CO	Garfield	24000	Howard Canyon	Core or cutting	Granite		USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"KERR-MCGEE AND PHILLIPS NO. 1 UNIT, 4310-4320 FOOT INTERVAL; SEC. 8, T8S, R102W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
723	-104.886111	38.337500	104	53	10	W	38	20	15	N	US	CO	Pueblo	24000	Hobson	Core or cutting	Gneiss	COARSE-GRAINED GRANITIC GNEISS; K-FELDSPAR RB/SR IS 1 BY X-RAY FLUORESCENCE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"PAN AMERICAN NO. 1 INGRAM, 4493-4497 FOOT INTERVAL; SEC. 4, T20S, R67W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
724	-104.179167	37.933333	104	10	45	W	37	56	0	N	US	CO	Pueblo	24000	Yellowbank Creek	Core or cutting	Gneiss	FINE- TO MEDIUM-GRAINED BANDED GRANITIC GNEISS	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"PHILLIPS NO. 1-A JOHNSON, 5136-5156 FOOT INTERVAL; SEC. 25, T24S, R61W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
725	-105.883333	37.625000	105	53	0	W	37	37	30	N	US	CO	Alamosa	24000	Hooper West	Core or cutting	Gneiss	FINE- TO MEDIUM-GRAINED GRANITIC GNEISS; WHOLE ROCK RB/SR=0.2 BY X-RAY FLUORESCENCE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"AMERADA NO. 1-F STATE, 5860-5875 FOOT INTERVAL; SEC. 16, T39N, R10E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
726	-102.975000	37.208333	102	58	30	W	37	12	30	N	US	CO	Baca	250000	La Junta	Core or cutting	Granite	COARSE-GRAINED	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"MORAN BROTHERS NO. 1 CRAMER; 3240-3300 FOOT INTERVAL; SEC. 12, T33S, R50W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
727	-108.958056	37.037500	108	57	29	W	37	2	15	N	US	CO	Montezuma	24000	Sentinel Peak SW	Core or cutting	Leucogranite		Unk	"Marvin, R.F."	75 09	Accurate to within 1 minute (~1 mile)	"CONTINENTAL NO. 1 UTE MOUNTAIN; SEC. 7, T32N, R19W"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
728	-110.125000	39.288889	110	7	30	W	39	17	20	N	US	UT	Emery	62500	Range Creek	Core or cutting	Gneiss	FINE-GRAINED PYROXENE-GARNET-BIOTITE-QUARTZ-FELDSPAR GNEISS; WHOLE-ROCK RB/SR = 1.2 BY X-RAY FLUORESCENCE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"PACIFIC NATURAL GAS SOUTHERN UNION NO. 1-27 RANGE CREEK, 8472-8478 FOOT INTERVAL; SEC. 27, R17S, R16E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
729	-109.700000	39.551389	109	42	0	W	39	33	5	N	US	UT	Uintah	24000	Flat Rock Mesa	Core or cutting	Granodiorite	FINE-GRAINED CATACLASTIC HORNBLENDE-BIOTITE GRANODIORITE GNEISS	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"CARTER NO. 1 MINTON-STATE, 12862 FOOT INTERVAL; SEC. 32, T14S, R20E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
730	-85.886111	32.191667	85	53	10	W	32	11	30	N	US	AL	Bullock	24000	Fitzpatrick	Core or cutting	Gneiss	DIORITE GNEISS	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"CAPITAL NO. 1 GHOLSTON; 1712-1715 FOOT INTERVAL; SEC. 18, T14N, R22E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
731	-81.166667	29.038889	81	10	0	W	29	2	20	N	US	FL	Volusia	24000	Daytona Beach SW	Core or cutting	Microdiorite		USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SUN NO. 1 POWELL LAND CO., 5954-5955 FOOT INTERVAL; SEC. 11, T17S, R31E"	"Muehlberger, W.R., Hedge, C.E., Denison, R.E., and Marvin, R.F., 1966, Geochronology Of The Midcontinent Region, United States, Part III, Southern Area: Journal of Geophysical Research, v. 71, p. 5409-5426"	
732	-95.179167	43.175000	95	10	45	W	43	10	30	N	US	IA	Clay	24000	Spencer	Core or cutting	Norite		USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"B-X COMPANY TEST NO. 1, 2301-2302 FOOT INTERVAL; SEC. 35, T97N, R37W"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
733	-95.179167	43.175000	95	10	45	W	43	10	30	N	US	IA	Clay	24000	Spencer	Core or cutting	Granite	FOLIATED BIOTITE GRANITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"B-X COMPANY TEST NO. 1, 2506-2507 FOOT INTERVAL; SEC. 35, T97N, R37W"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
734	-94.525000	42.580556	94	31	30	W	42	34	50	N	US	IA	Pocahontas	250000	Fort Dodge	Core or cutting	Gneiss	ALTERED BIOTITE GNEISS	"USGS Reston, Geophysics Lab CIW, Department of Terrestrial Magnetism CIW"	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"U.S. GEOLOGICAL SURVEY NO. 2A MANSON, 367 FOOT INTERVAL; SEC. 29, T90N, R31W"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
735	-94.525000	42.580556	94	31	30	W	42	34	50	N	US	IA	Pocahontas	250000	Fort Dodge	Core or cutting	Gneiss	ALTERED BIOTITE-GNEISS	"USGS Reston, Geophysics Lab CIW, Department of Terrestrial Magnetism CIW"	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"U.S. GEOLOGICAL SURVEY NO. 2A MANSON, 458 FOOT DEPTH; SEC. 29, T90N, R31W"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
736	-91.727778	43.272222	91	43	40	W	43	16	20	N	US	IA	Winneshiek	250000	La Crosse	Core or cutting	Gabbro		"USGS Reston, Geophysics Lab CIW, Department of Terrestrial Magnetism CIW"	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"PIONEER NO. 1 DECORAH BAKKE, 2500 FOOT INTERVAL; SEC. 30, T98N, R7W"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
737	-90.666667	42.504167	90	40	0	W	42	30	15	N	US	IA	Dubuque	24000	Dubuque North	Core or cutting	Granite		"USGS Reston, Geophysics Lab CIW, Department of Terrestrial Magnetism CIW"	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"DUBUQUE PACKING CO. NO. 5, 1950-1965(?) FOOT INTERVAL; SEC. 24, T89N, R2E"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
738	-90.248611	41.808333	90	14	55	W	41	48	30	N	US	IA	Clinton	24000	Clinton	Core or cutting	Granite		"USGS Reston, Geophysics Lab CIW, Department of Terrestrial Magnetism CIW"	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"I.E. DUPONT DE NEMOURS NO. 5; 3205-3215 FOOT INTERVAL; SEC. 22, T81N, R6E"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
739	-95.063889	40.583333	95	3	50	W	40	35	0	N	US	IA	Page	250000	Nebraska City	Core or cutting	Granite	ALTERED TWO-MICA GRANITE	"USGS Reston, Geophysics Lab CIW, Department of Terrestrial Magnetism CIW"	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"IOWA OIL DEV. CO. NO. 1 WILSON, 5212-5250 FOOT INTERVAL; SEC. 25, T68N, R37W; KNOWN AS ""CLARINDA"" WELL"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
740	-94.565278	42.537500	94	33	55	W	42	32	15	N	US	IA	Pocahontas	250000	Fort Dodge	Core or cutting	Gneiss		"USGS Reston, Geophysics Lab CIW, Department of Terrestrial Magnetism CIW"	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"ZEHR; DEPTH UNKNOWN; SEC. 35, T90N, R32W"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
741	-88.888889	42.175000	88	53	20	W	42	10	30	N	US	IL	Boone	24000	Cherry Valley	Core or cutting	Monzonite	QUARTZ-BIOTITE MONZONITE	"USGS Reston, Department of Terrestrial Magnetism CIW, Geophysics Lab CIW"	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"NORTHERN ILLINOIS NO. 1 E. TAYLOR; 2925-2998 FOOT INTERVAL; SEC. 28, T43N, R3E"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
742	-88.627778	41.986111	88	37	40	W	41	59	10	N	US	IL	DeKalb	24000	Sycamore	Core or cutting	Granite		"USGS Reston, Department of Terrestrial Magnetism CIW, Geophysics Lab CIW"	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"PAUL SCHULTE NO. 1 E. WYMAN, 3845-4115 FOOT INTERVAL; SEC. 35, T41N, R5E"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
743	-88.611111	41.625000	88	36	40	W	41	37	30	N	US	IL	La Salle	24000	Neward	Core or cutting	Granite		"USGS Reston, Department of Terrestrial Magnetism CIW, Geophysics Lab CIW"	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"A.C. OTTO NO. 1 SWENSON, ABOUT 3700 FOOT DEPTH; SEC. 1, T36N, R5E"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
744	-89.388889	41.691667	89	23	20	W	41	41	30	N	US	IL	Lee	62500	Amboy	Core or cutting	Granite		"USGS Reston, Department of Terrestrial Magnetism CIW, Geophysics Lab CIW"	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"AMBOY NO. 1 J.B. MCELROY, 3760-3772 FOOT INTERVAL; SEC. 30, T20N, R10E"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
745	-89.312500	41.680556	89	18	45	W	41	40	50	N	US	IL	Lee	62500	Amboy	Core or cutting	Granite	BOTH GRANITE AND RHYOLITE CUTTINGS PRESENT	"USGS Reston, Department of Terrestrial Magnetism CIW, Geophysics Lab CIW"	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"H.O. CARR NO. 1 VEDOVELL, 3465-3643 FOOT INTERVAL; SEC. 35, T20N, R10E"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
746	-90.422222	41.347222	90	25	20	W	41	20	50	N	US	IL	Henry	24000	Orion	Core or cutting	Granite	HORNBLENDE-BIOTITE GRANITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"RALPH DAVIS NO. 1 SOUTH, 3860 FOOT INTERVAL; SEC. 30, T16N, R1E"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
747	-90.895833	41.105556	90	53	45	W	41	6	20	N	US	IL	Mercer	62500	Keithsburg	Core or cutting	Granite		"USGS Reston, Department of Terrestrial Magnetism CIW, Geophysics Lab CIW"	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"H.L. KELLY NO. 1 FULLERTON, 3255-3410 FOOT INTERVAL; SEC. 19, T13N, R4W"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
748	-87.116667	41.630556	87	7	0	W	41	37	50	N	US	IN	Porter	24000	Dune Acres	Core or cutting	Granite		USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"BETHLEHEM STEEL NO. 1, 4280-4290 FOOT INTERVAL; SEC 28, T37N, R6W"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
749	-85.986111	40.466667	85	59	10	W	40	28	0	N	US	IN	Howard	24000	Greentown	Core or cutting	Granite		USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"KOKOMO NO. 1 GREENTOWN, 3946-3985 FOOT INTERVAL; SEC. 32, T24N, R5E"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
750	-85.252778	39.852778	85	15	10	W	39	51	10	N	US	IN	Henry	24000	Lewisville	Core or cutting	Granite	MICROGRAPHIC GRANITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"OHIO NO 1. MAY, 3650-3670 FOOT INTERVAL; SEC. 12, T16N, R11E"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
751	-85.041667	39.736111	85	2	30	W	39	44	10	N	US	IN	Wayne	24000	Brownsville	Core or cutting	Granite	MICROGRAPHIC GRANITE	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"PORTER GORDON NO. 1 M. DODDRIDGE, 3706-3727 FOOT INTERVAL; SEC. 23, T15N, R13E"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
752	-85.600000	45.622222	85	36	0	W	45	37	20	N	US	MI	Charlevoix	62500	Beaver Island	Core or cutting	Gabbro(?)	MAFIC IGNEOUS ROCK	"USGS Reston, UCLA"	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"MCCLURE NO. 2 STATE-BEAVER ISLAND, 4740-4780 DEPTH INTERVAL; SEC. 6, T37N, R10W"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
753	-82.519444	42.837500	82	31	10	W	42	50	15	N	US	MI	St. Clair	24000	Rattle Run	Core or cutting	Gneiss		"USGS Reston, Department of Terrestrial Magnetism CIW, Geophysics Lab CIW"	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"ST. CLAIR NO. 1 HURST, 4715-4770 FOOT INTERVAL; SEC. 26, T5N, R16E"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
754	-83.833333	42.416667	83	50	0	W	42	25	0	N	US	MI	Washtenaw	250000	Detroit	Core or cutting	Gneiss(?)		USGS Reston	"Cole, J.C."	75 09	Accurate to within 30 minutes (~30 miles)	"COLVIN AND ASSOCIATES, VOSS WELL"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
755	-83.750000	42.333333	83	45	0	W	42	20	0	N	US	MI	Washtenaw	250000	Detroit	Core or cutting	Gneiss		"USGS Reston, Department of Terrestrial Magnetism CIW, Geophysics Lab CIW"	"Cole, J.C."	75 09	Accurate to within 30 minutes (~30 miles)	"COLVIN AND ASSOCIATES, MEINZINGER WELL"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
756	-83.658333	41.319444	83	39	30	W	41	19	10	N	US	OH	Wood	24000	Bowling Green South	Core or cutting	Gneiss	FOLIATED BIOTITE GNEISS	"USGS Reston, Department of Terrestrial Magnetism CIW, Geophysics Lab CIW"	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"J. S. BRAILEY NO. 1 S.E. KILLIAN 2912-2927 FOOT INTERVAL; SEC. 12, LIBERTY TOWNSHIP (T4N, R10E)"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
757	-83.369444	41.406944	83	22	10	W	41	24	25	N	US	OH	Sandusky	24000	Elmore	Core or cutting	Metamorphic rock	GNEISS AND SCHIST	USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"OHIO NO. 1 W. H. BRUNS, 2767-2777 AND 2792-2822 FOOT INTERVALS, SEC. 9, T5N, R13E"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
758	-82.666667	41.194444	82	40	0	W	41	11	40	N	US	OH	Huron	24000	Monroeville	Core or cutting	Metamorphic rock	GNEISS AND SCHIST	"USGS Reston, Department of Terrestrial Magnetism CIW, Geophysics Lab CIW"	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"C.W. WHITE NO. 1 P. AND B. ARTING, 3917-4146 FOOT INTERVAL; SEC. 2, PERU TOWNSHIP (T3N, R23W)"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
759	-84.079167	40.313889	84	4	45	W	40	18	50	N	US	OH	Shelby	24000	Port Jefferson	Core or cutting	Trachyte porphyry		USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"SUN NO. 1 NELSON, 3248-3261 FOOT INTERVAL; SEC. 24, PERRY TOWNSHIP (T2N, R13W)"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
760	-83.816667	40.300000	83	49	0	W	40	18	0	N	US	OH	Logan	24000	Bellefontaine	Core or cutting	Rhyolite porphyry		USGS Reston	"Cole, J.C."	75 09	Accurate to within 5 minute (~5 miles)	OHIO NO. 1 VIRGIL JOHNS; 3299-3302 FOOT INTERVAL	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
761	-82.913889	40.566667	82	54	50	W	40	34	0	N	US	OH	Morrow	24000	Denmark	Core or cutting	Granite		USGS Reston	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"ASHLAND NO. 3 MYERS, 4090-4100 FOOT INTERVAL; SEC. 33, CANAAN TOWNSHIP (T5S, R17E)"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
762	-83.029167	40.133333	83	1	45	W	40	8	0	N	US	OH	Delaware	24000	Powell	Core or cutting	Metamorphic rock	GNEISS AND SCHIST CUTTINGS	"USGS Reston, Department of Terrestrial Magnetism CIW, Geophysics Lab CIW"	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"C.L. WISE NO. 1 H.E. VANCE, 4190-4215 AND 4280-4285 FOOT INTERVALS; SEC. 3, ORANGE TOWNSHIP"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
763	-83.441667	39.533333	83	26	30	W	39	32	0	N	US	OH	Fayette	24000	Washington Courthouse	Core or cutting	Metamorphic rock	GNEISS AND SCHIST CUTTINGS	"USGS Reston, Department of Terrestrial Magnetism CIW"	"Cole, J.C."	75 09	Accurate to within 5 minute (~5 miles)	"KEWANEE NO. 1 E.A. HOPKINS, 4500-4690 FOOT INTERVAL; UNION TOWNSHIP"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
764	-83.562500	39.441667	83	33	45	W	39	26	30	N	US	OH	Fayette	24000	Memphis	Core or cutting	Amphibolite		"USGS Reston, Department of Terrestrial Magnetism CIW"	"Cole, J.C."	75 09	Accurate to within 5 minute (~5 miles)	"KEWANEE NO. 1 E. WILSON, 3340-3494 FOOT INTERVAL; CONCORD TOWNSHIP"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
765	-81.269444	39.255556	81	16	10	W	39	15	20	N	US	WV	Wood	24000	Willow Island	Core or cutting	Granodiorite gneiss		"USGS Reston, Department of Terrestrial Magnetism CIW"	"Cole, J.C."	75 09	Accurate to within 1 minute (~1 mile)	"HOPE NATURAL GAS CO. NO. 9634 POWER OIL CO., SANDHILL WELL, 13297-13314 FOOT INTERVAL, WALKER DISTRICT; ABOUT 12 MI. EAST OF PARKERSBURG"	"Lidiak, E.G., Marvin, R.F., Thomas, H.H., and Bass, M.N., 1966, Geochronology Of The Midcontinent Region, United States, Part IV, Eastern Area: Journal of Geophysical Research, v. 71, p. 5427-5438."	
766	-119.495833	37.837500	119	29	45	W	37	50	15	N	US	CA	Mariposa	62500	Tuolumne Meadows	Outcrop or artificial surface exposure	Pegmatite	HOFFMAN PEGMATITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	YOSEMITE NATIONAL PARK	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
767	-119.516667	37.816667	119	31	0	W	37	49	0	N	US	CA	Mariposa	62500	Hetch Hetchy Reservoir	Outcrop or artificial surface exposure	Quartz monzonite	HOFFMAN QUARTZ MONZONITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	YOSEMITE NATIONAL PARK	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
768	-119.362222	37.876111	119	21	44	W	37	52	34	N	US	CA	Tuolumne	62500	Tuolumne Meadows	Outcrop or artificial surface exposure	Granite	JOHNSON GRANITE PORPHYRY	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	YOSEMITE NATIONAL PARK	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
769	-119.333333	37.876389	119	20	0	W	37	52	35	N	US	CA	Tuolumne	62500	Tuolumne Meadows	Outcrop or artificial surface exposure	Granite	CATHEDRAL PEAK GRANITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	YOSEMITE NATIONAL PARK	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
770	-119.554167	37.722500	119	33	15	W	37	43	21	N	US	CA	Mariposa	62500	Yosemite	Outcrop or artificial surface exposure	Quartz monzonite	HALF DOME QUARTZ MONZONITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 30 minutes (~30 miles)	YOSEMITE NATIONAL PARK	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
771	-119.491667	37.849167	119	29	30	W	37	50	57	N	US	CA	Mariposa	62500	Tuolumne Meadows	Outcrop or artificial surface exposure	Pegmatite	ANDALUSITE-BEARING SENTINEL PEGMATITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"YOSEMITE NATIONAL PARK, NORTH END OF MAY LAKE"	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
772	-119.586389	37.738056	119	35	11	W	37	44	17	N	US	CA	Mariposa	62500	Yosemite	Outcrop or artificial surface exposure	Granodiorite	SENTINEL GRANODIORITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	YOSEMITE NATIONAL PARK	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
773	-119.713611	37.721944	119	42	49	W	37	43	19	N	US	CA	Mariposa	24000	Yosemite	Outcrop or artificial surface exposure	Granite	EL CAPITAN GRANITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	YOSEMITE NATIONAL PARK	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
774	-119.720833	37.712500	119	43	15	W	37	42	45	N	US	CA	Mariposa	62500	Yosemite	Outcrop or artificial surface exposure	Granodiorite	GATEWAY GRANODIORITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	YOSEMITE NATIONAL PARK	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
775	-119.701944	37.711111	119	42	7	W	37	42	40	N	US	CA	Mariposa	62500	Yosemite	Outcrop or artificial surface exposure	Granite	ARCH ROCK GRANITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	YOSEMITE NATIONAL PARK	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
776	-120.577778	35.416667	120	34	40	W	35	25	0	N	US	CA	San Luis Obispo	24000	Santa Margarita	Outcrop or artificial surface exposure	Granodiorite	SANTA MARGARITA GRANODIORITE OR QUARTZ MONZONITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SEC. 10, T29S, R13E, MD"	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
777	-121.250000	36.500000	121	15	0	W	36	30	0	N	US	CA	San Benito	24000	Bickmore Canyon	Outcrop or artificial surface exposure	Quartz diorite	GABILAN MESA QUARTZ DIORITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SEC. 29, T17S, R7E, MD., ROAD CUT ON ROAD TO PINNACLES NATIONAL MONUMENT, 3.2 MI. E OF ITS JUNCTION WITH THE METZ ROAD"	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
778	-121.937500	36.516667	121	56	15	W	36	31	0	N	US	CA	Monterey	24000	Monterey	Quarry	Granodiorite	SANTA LUCIA GRANODIORITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	QUARRY AT CARMEL COVE ON CARMEL BAY	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
779	-122.422222	37.544444	122	25	20	W	37	32	40	N	US	CA	San Mateo	24000	Montara Mountain	Outcrop or artificial surface exposure	Quartz diorite	MONTARA QUARTZ DIORITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	PILARCITOS DAM SITE APPROXIMATELY 20 MI. SOUTH OF SAN FRANCISCO	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
780	-120.050000	37.400000	120	3	0	W	37	24	0	N	US	CA	Mariposa	24000	Catheys Valley	Outcrop or artificial surface exposure	Quartz monzonite	"BIOTITE-HORNBLENDE-MICROCLINE-OLIGOCLASE QUARTZ MONZONITE, GUADALUPE MOUNTAIN QUARTZ MONZONITE"	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NE 1/4, SEC. 24, T6S, R17E, MD, SOUTHERN END OF THE GUADALUPE MOUNTAINS"	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
781	-121.233333	38.790833	121	14	0	W	38	47	27	N	US	CA	Placer	24000	Rocklin	Quarry	Quartz diorite	"BIOTITE-MUSCOVITE-HORNBLENDE QUARTZ DIORITE, ROCKLIN GRANODIORITE"	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SEC. 19, T11N, R7E, MD., LARGE ROCK QUARRY AT ROCKLIN"	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
782	-121.291667	40.004167	121	17	30	W	40	0	15	N	US	CA	Plumas	62500	Jonesville	Outcrop or artificial surface exposure	Granodiorite	BELDEN GRANODIORITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	APPROXIMATELY 2 MI. W OF BELDEN	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
783	-123.020833	37.991667	123	1	15	W	37	59	30	N	US	CA	Marin	24000	Drakes Bay	Quarry	Granodiorite	"10-15% ORTHOCLASE, POINT REYES GRANODIORITE"	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	QUARRY NEAR POINT REYES LIGHTHOUSE	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
784	-121.333333	37.000000	121	20	0	W	37	0	0	N	US	CA	(Not given)	Unk	(Not given)	Outcrop or artificial surface exposure	Sandstone	PANOCHE SANDSTONE (UPPER CENOMANIAN)	"University of California, Berkeley"	"Marvin, R.F."	75 10	Location not given or only in terms less accurate than 30 minutes	EAST OF SAN ANDREAS FAULT IN DIABLO RANGE	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
785	-121.333333	37.000000	121	20	0	W	37	0	0	N	US	CA	(Not given)	Unk	(Not given)	Outcrop or artificial surface exposure	Sedimentary	TURONIIAN(?) SEDIMENTARY ROCKS	"University of California, Berkeley"	"Marvin, R.F."	75 10	Location not given or only in terms less accurate than 30 minutes	EAST OF SAN ANDREAS FAULT IN DIABLO RANGE	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
786	-121.333333	37.000000	121	20	0	W	37	0	0	N	US	CA	(Not given)	Unk	(Not given)	Outcrop or artificial surface exposure	Sedimentary	VALANGINIAN SEDIMENTARY ROCKS	"University of California, Berkeley"	"Marvin, R.F."	75 10	Location not given or only in terms less accurate than 30 minutes	EAST OF SAN ANDREAS FAULT IN DIABLO RANGE	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
787	-123.000000	37.700000	123	0	0	W	37	42	0	N	US	CA	San Francisco	250000	San Francisco	Outcrop or artificial surface exposure	Quartz diorite	FARALLON QUARTZ DIORITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	LARGEST OF THE FARALLON ISLANDS	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
788	-121.116667	38.816667	121	7	0	W	38	49	0	N	US	CA	Placer	62500	Auburn	Quarry	Quartz diorite	"HYPERSTHENE, HORNBLENDE, BIOTITE QUARTZ DIORITE, HORSESHOE BAR QUARTZ DIORITE"	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NE 1/4, SEC. 18, T11N, R8E, MD., QUARRY APPROXIMATELY 3 MILES SE OF LOOMIS"	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
789	-122.616667	40.420833	122	37	0	W	40	25	15	N	US	CA	Shasta	62500	Ono	Outcrop or artificial surface exposure	Quartz diorite	"HORNBLENDE QUARTZ DIORITE PHASE, SHASTA BALLY QUARTZ DIORITE"	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	ONE MILE N OF ONO	"Curtis, G.H., Evernden, J.F., and Lipson, J., 1958, Age determination of some granitic rocks in California by the potassium-argon method:  California Division of Mines, Special Report No. 54, p. 1-16"	
790	-119.495833	37.837500	119	29	45	W	37	50	15	N	US	CA	Mariposa	62500	Tuolumne Meadows	Outcrop or artificial surface exposure	Pegmatite	HOFFMAN PEGMATITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	YOSEMITE NATIONAL PARK	"Evernden, J.F., Curtis, G.H., and Lipson, J., 1957, Potassium-argon dating of igneous rocks:  American Association of Petroleum Geologists Bulletin, v. 41, p. 2120-2127"	
791	-119.516667	37.816667	119	31	0	W	37	49	0	N	US	CA	Mariposa	62500	Hetch Hetchy Reservoir	Outcrop or artificial surface exposure	Quartz monzonite	HOFFMAN QUARTZ MONZONITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	YOSEMITE NATIONAL PARK	"Evernden, J.F., Curtis, G.H., and Lipson, J., 1957, Potassium-argon dating of igneous rocks:  American Association of Petroleum Geologists Bulletin, v. 41, p. 2120-2127"	
792	-119.362222	37.876111	119	21	44	W	37	52	34	N	US	CA	Tuolumne	62500	Tuolumne Meadows	Outcrop or artificial surface exposure	Granite	JOHNSON GRANITE PORPHYRY	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	YOSEMITE NATIONAL PARK	"Evernden, J.F., Curtis, G.H., and Lipson, J., 1957, Potassium-argon dating of igneous rocks:  American Association of Petroleum Geologists Bulletin, v. 41, p. 2120-2127"	
793	-119.333333	37.876389	119	20	0	W	37	52	35	N	US	CA	Tuolumne	62500	Tuolumne Meadows	Outcrop or artificial surface exposure	Granite	CATHEDRAL PEAK GRANITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	YOSEMITE NATIONAL PARK	"Evernden, J.F., Curtis, G.H., and Lipson, J., 1957, Potassium-argon dating of igneous rocks:  American Association of Petroleum Geologists Bulletin, v. 41, p. 2120-2127"	
794	-119.554167	37.722500	119	33	15	W	37	43	21	N	US	CA	Mariposa	62500	Yosemite	Outcrop or artificial surface exposure	Quartz monzonite	HALF DOME QUARTZ MONZONITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 30 minutes (~30 miles)	YOSEMITE NATIONAL PARK	"Evernden, J.F., Curtis, G.H., and Lipson, J., 1957, Potassium-argon dating of igneous rocks:  American Association of Petroleum Geologists Bulletin, v. 41, p. 2120-2127"	
795	-119.491667	37.849167	119	29	30	W	37	50	57	N	US	CA	Mariposa	62500	Tuolumne Meadows	Outcrop or artificial surface exposure	Pegmatite	ANDALUSITE-BEARING SENTINEL PEGMATITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	YOSEMITE NATIONAL PARK; NORTH END OF MAY LAKE	"Evernden, J.F., Curtis, G.H., and Lipson, J., 1957, Potassium-argon dating of igneous rocks:  American Association of Petroleum Geologists Bulletin, v. 41, p. 2120-2127"	
796	-119.586389	37.738056	119	35	11	W	37	44	17	N	US	CA	Mariposa	62500	Yosemite	Outcrop or artificial surface exposure	Granodiorite	SENTINEL GRANODIORITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	YOSEMITE NATIONAL PARK	"Evernden, J.F., Curtis, G.H., and Lipson, J., 1957, Potassium-argon dating of igneous rocks:  American Association of Petroleum Geologists Bulletin, v. 41, p. 2120-2127"	
797	-119.713611	37.721944	119	42	49	W	37	43	19	N	US	CA	Mariposa	24000	Yosemite	Outcrop or artificial surface exposure	Granite	EL CAPITAN GRANITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	YOSEMITE NATIONAL PARK	"Evernden, J.F., Curtis, G.H., and Lipson, J., 1957, Potassium-argon dating of igneous rocks:  American Association of Petroleum Geologists Bulletin, v. 41, p. 2120-2127"	
798	-119.720833	37.712500	119	43	15	W	37	42	45	N	US	CA	Mariposa	62500	Yosemite	Outcrop or artificial surface exposure	Granodiorite	GATEWAY GRANODIORITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	YOSEMITE NATIONAL PARK	"Evernden, J.F., Curtis, G.H., and Lipson, J., 1957, Potassium-argon dating of igneous rocks:  American Association of Petroleum Geologists Bulletin, v. 41, p. 2120-2127"	
799	-119.701944	37.711111	119	42	7	W	37	42	40	N	US	CA	Mariposa	62500	Yosemite	Outcrop or artificial surface exposure	Granite	ARCH ROCK GRANITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	YOSEMITE NATIONAL PARK	"Evernden, J.F., Curtis, G.H., and Lipson, J., 1957, Potassium-argon dating of igneous rocks:  American Association of Petroleum Geologists Bulletin, v. 41, p. 2120-2127"	
800	-119.468333	37.801389	119	28	6	W	37	48	5	N	US	CA	Mariposa	62500	Tuolumne Meadows	Outcrop or artificial surface exposure	Quartz monzonite	HALF DOME QUARTZ MONZONITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	YOSEMITE NATIONAL PARK	"Evernden, J.F., Curtis, G.H., and Lipson, J., 1957, Potassium-argon dating of igneous rocks:  American Association of Petroleum Geologists Bulletin, v. 41, p. 2120-2127"	
801	-119.468333	37.820833	119	28	6	W	37	49	15	N	US	CA	Mariposa	62500	Tuolumne Meadows	Outcrop or artificial surface exposure	Quartz monzonite	HALF DOME QUARTZ MONZONITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	YOSEMITE NATIONAL PARK	"Evernden, J.F., Curtis, G.H., and Lipson, J., 1957, Potassium-argon dating of igneous rocks:  American Association of Petroleum Geologists Bulletin, v. 41, p. 2120-2127"	
802	-121.833333	39.208333	121	50	0	W	39	12	30	N	US	CA	Sutter	24000	Sutter Buttes	Outcrop or artificial surface exposure	Andesite	SUTTER BUTTES ANDESITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	"T16N, R1E AND R2E"	"Evernden, J.F., Curtis, G.H., and Lipson, J., 1957, Potassium-argon dating of igneous rocks:  American Association of Petroleum Geologists Bulletin, v. 41, p. 2120-2127"	
803	-121.833333	39.208333	121	50	0	W	39	12	30	N	US	CA	Sutter	24000	Sutter Buttes	Outcrop or artificial surface exposure	Rhyolite	SUTTER BUTTES RHYOLITE	"University of California, Berkeley"	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	"T16N, R1E AND R2E"	"Evernden, J.F., Curtis, G.H., and Lipson, J., 1957, Potassium-argon dating of igneous rocks:  American Association of Petroleum Geologists Bulletin, v. 41, p. 2120-2127"	
804	-83.441667	39.533333	83	26	30	W	39	32	0	N	US	OH	Fayette	24000	Washington Courthouse	Core or cutting	Amphibolite		"Department of Terrestrial Magnetism, CIW"	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	"KEWANEE OIL CO. WELL, E.A. HOPKINS FARM, UNION TOWNSHIP, LOT 663; CUTTINGS FROM 4500-4690 FOOT INTERVAL"	"Bass, M.N., 1960, Grenville boundary in Ohio:  Journal of Geology, v. 68, p. 673-677"	
805	-83.562500	39.441667	83	33	45	W	39	26	30	N	US	OH	Fayette	24000	Memphis	Core or cutting	Amphibolite		"Department of Terrestrial Magnetism, CIW"	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	"KEWANEE OIL CO. WELL, ESTHER WILSON FARM, CONCORD TOWNSHIP, LOT 1002; CUTTINGS FROM 3340-3494 FOOT INTERVAL"	"Bass, M.N., 1960, Grenville boundary in Ohio:  Journal of Geology, v. 68, p. 673-677"	
806	-81.269444	39.255556	81	16	10	W	39	15	20	N	US	WV	Wood	24000	Willow Island	Core or cutting	Metamorphic rock	"TONALITE AND GRANODIORITE GNEISS, BASIC AMPHIBOLITE, MINOR SCHIST"	"Department of Terrestrial Magnetism, CIW"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"HOPE NATURAL GAS WELL NO. 9634, SANDHILL WELL, WALKER DISTRICT; CUTTINGS FROM 13276-13331 FOOT INTERVAL"	"Bass, M.N., 1960, Grenville boundary in Ohio:  Journal of Geology, v. 68, p. 673-677"	
807	-108.958056	37.037500	108	57	29	W	37	2	15	N	US	CO	Montezuma	24000	Sentinel Peak SW	Core or cutting	Granite		Unk	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"CONTINENTAL NO. 1 UTE MOUNTAIN; SEC. 7, T32N, R19W"	"Fitzsimmons, J.P., 1963, Precambrian of the Four Corners area, ""In"" Guidebook to the Shelf Carbonates Of The Paradox Basin: Four Corners Geological Society, Durango, Colorado, p. 13-20"	
808	-112.871389	32.358333	112	52	17	W	32	21	30	N	US	AZ	Pima	62500	Ajo	Quarry	Quartz monzonite	"MEDIUM-GRAINED (SLIGHTLY PORPHYRITIC) QUARTZ MONZONITE OF NEW CORNELIA STOCK.  COMPOSED OF PLAGIOCLASE, ORTHOCLASE (PARTIALLY SERICITIZED), QUARTZ, BIOTITE (PARTIALLY CHLORITIZED), AND COMPLETELY ALTERED HORNBLENDE(?)"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NW1/4 NE1/4 SEC. 27, T12S, R6W, NW CORNER OF AJO OPEN-PIT COPPER MINE IN NEW CORNELIA STOCK"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
809	-112.881944	32.362778	112	52	55	W	32	21	46	N	US	AZ	Pima	62500	Ajo	Outcrop or artificial surface exposure	Quartz monzonite	"NEW CORNELIA STOCK.  MEDIUM-GRAINED, EQUIGRANULAR QUARTZ MONZONITE COMPOSED OF ALTERED PLAGIOCLASE (BADLY SERICITIZED), ORTHOCLASE (BADLY SERICITIZED), QUARTZ, BIOTITE (SOMEWHAT CHLORITIC), AND HORNBLENDE (PARTIALLY ALTERED TO CHLORITE, EPIDOTE, AND MAGNE"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NE1/4 SE1/4 SEC. 21, T12S, R6W; WEST OF AJO IN NEW CORNELIA STOCK"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
810	-110.916667	33.388611	110	55	0	W	33	23	19	N	US	AZ	Gila	62500	Globe	Outcrop or artificial surface exposure	Granite	"SCHULTZ GRANITE.  PORPHYRITIC PHASE COMPOSED OF COARSE-GRAINED ORTHOCLASE (PHENOCRYSTIC, INCIPIENT SERICITIZATION), QUARTZ, PLAGIOCLASE, AND BIOTITE"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SCHULTZ GRANITE 1-1/4 MILES NORTH OF SCHULTZ RANCH, NEAR MIAMI"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
811	-111.058333	33.204167	111	3	30	W	33	12	15	N	US	AZ	Pinal	24000	Teapot Mountain	Outcrop or artificial surface exposure	Quartz monzonite	"COARSE-GRAINED, PORPHYRITIC QUARTZ MONZONITE (GRANITE MOUNTAIN PORPHYRY) COMPOSED OF PLAGIOCLASE (PATCHY SERICITIZATION) PHENOCRYSTS IN A GROUNDMASS OF ORTHOCLASE (SOME MICROCLINE), QUARTZ AND BIOTITE (SLIGHT CHLORITIZATION)"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	"GRANITE MOUNTAIN PORPHYRY ALONG ARIZ. ROUTE 177, 4 MI. W OF RAY"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
812	-109.403611	33.046667	109	24	13	W	33	2	48	N	US	AZ	Greenlee	62500	Clifton	Outcrop or artificial surface exposure	Diorite	"FINE-GRAINED, PORPHYRITIC, MORENCI DIORITE PORPHYRY COMPOSED OF PLAGIOCLASE (LARGE) AND CORRODED HORNBLENDE PHENOCRYSTS IN A GROUNDMASS OF QUARTZ, ORTHOCLASE, AND PLAGIOCLASE"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	MORENCI DIORITE PORPHYRY LOCATED 3 MI. SW OF MORENCI	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
813	-109.383333	33.083333	109	23	0	W	33	5	0	N	US	AZ	Greenlee	62500	Clifton	Outcrop or artificial surface exposure	Monzonite	"COARSE, EQUIGRANULAR MONZONITE COMPOSED OF PLAGIOCLASE (PARTIAL SERICITIZATION), ORTHOCLASE, QUARTZ, BIOTITE (SOME CHLORITE AND MAGNETITE)"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	WEST OF MORENCI OPEN-PIT COPPER MINE	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
814	-107.674722	37.799167	107	40	29	W	37	47	57	N	US	CO	San Juan	62500	Silverton	Outcrop or artificial surface exposure	Quartz monzonite	"MEDIUM-GRAINED QUARTZ MONZONITE (SILVERTON STOCK) COMPOSED OF ORTHOCLASE (BADLY SEICITIZED), PLAGIOCLASE, QUARTZ, ALTERED HORNBLENDE(?), AND SLIGHTLY CHLORITIC BIOTITE"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	SILVERTON STOCK LOCATED ALONG US ROUTE 550 ABOUT 1 MI. S OF SILVERTON	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
815	-107.673889	37.795278	107	40	26	W	37	47	43	N	US	CO	San Juan	62500	Silverton	Outcrop or artificial surface exposure	Quartz monzonite	"MEDIUM-GRAINED QUARTZ MONZONITE (SILVERTON STOCK) COMPOSED OF PLAGIOCLASE, ORTHOCLASE (BADLY SEICITIZED), QUARTZ, BIOTITE, ALTERED HORNBLENDE(?)"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	SILVERTON STOCK LOCATED ALONG US ROUTE 550 ABOUT 1.6 MI. S OF SILVERTON	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
816	-107.868056	37.858889	107	52	5	W	37	51	32	N	US	CO	San Miguel	24000	Ophir	Float	Monzonite	"MEDIUM-GRAINED, PORPHYRITIC MONZONITE (OPHIR PLUTON) COMPOSED OF PLAGIOCLASE PHENOCRYSTS IN A GROUNDMASS OF PLAGIOCLASE, ORTHOCLASE, PARTIALLY CHLORITIZED BIOTITE, AND AUGITE"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	LARGE TALUS SLOPE ALONG OPHIR PASS ROAD ABOUT 1/2 MI. E OF COLORADO ROUTE 145	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
817	-108.071389	37.385278	108	4	17	W	37	23	7	N	US	CO	La Plata	62500	La Plata	Outcrop or artificial surface exposure	Diorite	LA PLATA SILL. PORPHYRITIC DIORITE-MONZONITE COMPOSED OF PLAGIOCLASE (ALTERED) AND HORNBLENDE (FRACTURED WITH CHLORITE DEVELOPMENT) PHENOCRYSTS IN A VERY SERICITIC GROUNDMASS CONTAINING ORTHOCLASE (?) AND QUARTZ	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	JUST SOUTH OF LA PLATA	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
818	-105.127778	38.729167	105	7	40	W	38	43	45	N	US	CO	Teller	24000	Cripple Creek South	Mine	Syenite	"MEDIUM-GRAINED CRIPPLE CREEK SYENITE COMPOSED OF ORTHOCLASE (BADLY SERICITIZED), PLAGIOCLASE, AEGIRINE-AUGITE (PARTIAL ALTERATION TO BIOTITE AND"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"DUMP OF VINDICATOR MINE, NE OF VICTOR"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
819	-106.975000	40.841667	106	58	30	W	40	50	30	N	US	CO	Routt	24000	Hahns Peak	Outcrop or artificial surface exposure	Quartz monzonite	"PORPHYRITIC QUARTZ MONZONITE (HAHNS PEAK STOCK) COMPOSED OF ORTHOCLASE (SERICITIC AROUND EDGES) AND BIOTITE (CHLORITIC AROUND EDGES) PHENOCRYSTS IN A GROUNDMASS OF PLAGIOCLASE, QUARTZ, ORTHOCLASE, BIOTITE, AND SERICITE"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	"NE1/4 SE1/4 SEC. 12(?), T10N, R86W, ONE MILE SOUTH OF COLUMBINE"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
820	-105.393889	40.116111	105	23	38	W	40	6	58	N	US	CO	Boulder	62500	Boulder	Outcrop or artificial surface exposure	Granodiorite	"MEDIUM-GRAINED GRANODIORITE (JAMESTOWN STOCK) COMPOSED OF PLAGIOCLASE (SOME SERICITE), ORTHOCLASE, HORNBLENDE, AND QUARTZ"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SE1/4 SE1/4 SEC. 24, T2N, R71W, IMMEDIATELY WEST OF JAMESTOWN"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
821	-105.900000	39.600000	105	54	0	W	39	36	0	N	US	CO	Summit	62500	Montezuma	Outcrop or artificial surface exposure	Tonalite	"COARSE, EQUIGRANULAR QUARTZ MONZONITE (MONTEZUMA STOCK) COMPOSED OF ORTHOCLASE, PLAGIOCLASE, QUARTZ, AND BIOTITE"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SE1/4 NW1/4 SEC. 21, T5S, R76W, ALONG MONTEZUMA ROAD ABOUT 2 MI. WEST (?) OF US ROUTE 40"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
822	-105.947500	38.628333	105	56	51	W	38	37	42	N	US	CO	Chaffee	62500	Cameron Mountain	Quarry	Granodiorite	"MEDIUM-GRAINED, EQUIGRANULAR GRANODIORITE (SALIDA STOCK) COMPOSED OF PLAGIOCLASE, ORTHOCLASE, QUARTZ, BIOTITE AND HORNBLENDE"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NW1/4 SW1/4 SEC. 35, T51N, R77W; OLD QUARRY ABOUT 6 1/2 MILES NORTH-NORTHEAST OF SALIDA"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
823	-105.591667	39.952778	105	35	30	W	39	57	10	N	US	CO	Boulder	62500	Central City	Outcrop or artificial surface exposure	Quartz monzonite	"MEDIUM-GRAINED QUARTZ MONZONITE (ELDORA STOCK) COMPOSED OF PLAGIOCLASE, ORTHOCLASE, QUARTZ, BIOTITE, MINOR CHLORITE, AND AUGITE (?)"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NW1/4 NW1/4 SEC. 20, T1S, R73W; ONE-HALF MILE EAST OF HESSIE"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
824	-106.226389	39.314167	106	13	35	W	39	18	51	N	US	CO	Lake	62500	Mount Lincoln	Outcrop or artificial surface exposure	Granodiorite	"PORPHYRITIC GRANODIORITE (LINCOLN PORPHYRY) COMPOSED OF QUARTZ, ORTHOCLASE (SERICITIC), PLAGIOCLASE (SERICITIC), BIOTITE (PARTIALLY CHLORITIC) PHENOCRYSTS IN A GROUNDMASS OF QUARTZ AND PLAGIOCLASE"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	ALONG COLORADO ROUTE 91 ABOUT 7 MI. FR0M LEADVILLE	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
825	-113.716667	42.083333	113	43	0	W	42	5	0	N	US	ID	Cassia	24000	Almo	Outcrop or artificial surface exposure	Granodiorite	"MEDIUM-GRAINED GRANODIORITE (CASSIA BATHOLITH) COMPOSED OF PLAGIOCLASE (SOME SERICITE), QUARTZ, MICROCLINE, BIOTITE, MINOR CHLORITE, AND MUSCOVITE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	"NEAR ""CITY OF ROCKS"" ABOUT 5 MI. W OF ALMO, ALBION MOUNTAINS"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
826	-115.868611	47.506389	115	52	7	W	47	30	23	N	US	ID	Shoshone	62500	Burke	Outcrop or artificial surface exposure	Monzonite	"MEDIUM-GRAINED MONZONITE (GEM STOCK) COMPOSED OF PLAGIOCLASE (MODERATELY SERICITIZED), MICROCLINE, HORNBLENDE, AND MINOR QUARTZ"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	ALONG IDAHO ROUTE 4 IMMEDIATELY SOUTH OF GEM	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
827	-115.823333	47.492778	115	49	24	W	47	29	34	N	US	ID	Shoshone	62500	Wallace	Outcrop or artificial surface exposure	Lamprophyre	"MEDIUM-GRAINED LAMPROPHYRE DIKE COMPOSED OF BROWN HORNBLENDE, PLAGIOCLASE, AND BIOTITE (PARTIALLY CHLORITIC)"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	"STAR MINE, SW (?) OF GEM"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
828	-116.200000	47.527778	116	12	0	W	47	31	40	N	US	ID	Shoshone	62500	Kellogg	Unk	Syenite	"PAGE MINE ""DIABASE"" SILL--FINE-GRAINED, SLIGHTLY PORPHYRITIC SYENITE (BASIC) COMPOSED OF HORNBLENDE (MODERATELY CHLORITIC), AUGITE, ORTHOCLASE, AND QUARTZ-CALCITE VEINING"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	PAGE MINE ABOUT 4 MI. SE OF ENAVILLE	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
829	-117.016667	46.816667	117	1	0	W	46	49	0	N	US	ID	Latah	24000	Viola	Outcrop or artificial surface exposure	Quartz monzonite	"COARSE-GRAINED QUARTZ MONZONITE (IDAHO BATHOLITH OUTLIER?), COMPOSED OF MICROCLINE (COMMONLY SERICITIZED), QUARTZ, PLAGIOCLASE (RESORBED AND SERICITIZED), BIOTITE, AND MUSCOVITE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"2 MI. S OF VIOLA, ALONG US ROUTE 95, NEAR PALOUSE RANGE"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
830	-116.068056	44.265833	116	4	5	W	44	15	57	N	US	ID	Valley	62500	Smiths Ferry	Outcrop or artificial surface exposure	Granodiorite	"COARSE-GRAINED, IDAHO BATHOLITH GRANODIORITE COMPOSED OF PLAGIOCLASE, ORTHOCLASE, QUARTZ, BIOTITE, AND MINOR MUSCOVITE"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	2 MI. S OF SMITHS FERRY ALONG IDAHO ROUTE 15	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
831	-116.083333	46.258333	116	5	0	W	46	15	30	N	US	ID	Lewis	24000	Woodland	Outcrop or artificial surface exposure	Tonalite	"MEDIUM-GRAINED IDAHO BATHOLITH TONALITE COMPOSED OF QUARTZ, PLAGIOCLASE, ORTHOCLASE, BIOTITE (MOSTLY PRIMARY), HORNBLENDE (POORLY DEVELOPED, PARTIALLY ALTERED TO BIOTITE)."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	ALONG US ROUTE 12 ABOUT 3.5 MI. N OF KAMIAH	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
832	-116.008333	44.916667	116	0	30	W	44	55	0	N	US	ID	Valley	250000	Baker	Outcrop or artificial surface exposure	Tonalite	"COARSE-GRAINED IDAHO BATHOLITH TONALITE COMPOSED OF QUARTZ, PLAGIOCLASE, ORTHOCLASE, AND BIOTITE"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	"NW1/4 SE1/4 SEC. 1, T18N, R3E; YELLOW PINE ROAD ABOUT 4 MI. NE OF MC CALL"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
833	-115.083333	43.300000	115	5	0	W	43	18	0	N	US	ID	Camas	24000	Hill City	Outcrop or artificial surface exposure	Granodiorite	"MEDIUM-GRAINED IDAHO BATHOLITH GRANODIORITE COMPOSED OF QUARTZ, ORTHOCLASE, PLAGIOCLASE, AND BIOTITE (MINOR CHLORITE)"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 30 minutes (~30 miles)	ALONG IDAHO ROUTE 46 BETWEEN LITTLE CAMAS RESERVOIR AND HILL CITY (LOCATION CONFUSING--COMPILER)	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
834	-115.251389	46.373611	115	15	5	W	46	22	25	N	US	ID	Idaho	24000	Huckleberry Butte	Outcrop or artificial surface exposure	Quartz monzonite	"COARSE-GRAINED QUARTZ MONZONITE (IDAHO BATHOLITH) COMPOSED OF ORTHOCLASE (MINOR SERICITIZATION), QUARTZ, PLAGIOCLASE, AND BIOTITE (MINOR CHLORITE)"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	ALONG IDAHO ROUTE 9 (NOW US ROUTE 12) 43 MI. W OF IDAHO STATE BORDER	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
835	-115.959722	45.997222	115	57	35	W	45	59	50	N	US	ID	Idaho	24000	Harpster	Outcrop or artificial surface exposure	Quartz gabbro	"IDAHO BATHOLITH. MEDIUM-GRAINED QUARTZ GABBRO COMPOSED OF PLAGIOCLASE, QUARTZ, HORNBLENDE, HYPERSTHENE, AUGITE (?), AND ORTHOCLASE (?)."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NE1/4 SW1/4 SEC. 28, T30N (PROBABLY T31N--COMPILER), R4E; ALONG IDAHO ROUTE 13 N OF HARPSTER"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
836	-115.414444	43.790556	115	24	52	W	43	47	26	N	US	ID	Elmore	250000	Hailey	Outcrop or artificial surface exposure	Granodiorite	"IDAHO BATHOLITH. MEDIUM-GRAINED, SLIGHTLY PORPHYRITIC GRANODIORITE COMPOSED OF PLAGIOCLASE (SOME SERICITE), QUARTZ, MICROCLINE, AND BIOTITE"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"ALONG MIDDLE FORK OF BOISE RIVER, 14 MI. W OF ATLANTA"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
837	-114.255278	46.103056	114	15	19	W	46	6	11	N	US	MT	Ravalli	24000	Como Peaks	Outcrop or artificial surface exposure	Quartz monzonite	"IDAHO BATHOLITH. MEDIUM-GRAINED QUARTZ MONZONITE SHOWING SLIGHT BANDING, COMPOSED OF ORTHOCLASE, PLAGIOCLASE, QUARTZ, AND BIOTITE (SOME CHLORITIZATION)"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	LOST HORSE GULCH	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
838	-114.438056	46.137222	114	26	17	W	46	8	14	N	US	MT	Ravalli	24000	Tenmile Lake	Outcrop or artificial surface exposure	Quartz monzonite	"IDAHO BATHOLITH. MEDIUM-GRAINED QUARTZ MONZONITE COMPOSED OF ORTHOCLASE (SOME SERICITIZATION), PLAGIOCLASE, QUARTZ, BIOTITE (MODERATE CHLORITIZATION), AND MINOR MUSCOVITE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	LOST HORSE GULCH	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
839	-114.133333	46.166667	114	8	0	W	46	10	0	N	US	MT	Ravalli	24000	Hamilton South	Outcrop or artificial surface exposure	Gneiss	"IDAHO BATHOLITH. MEDIUM-GRAINED GRANITE GNEISS, BANDED: LIGHT BANDS OF QUARTZ, PRIMARILY, AND DARK BANDS OF ORIENTED BIOTITE, WITH PLAGIOCLASE AND ORTHOCLASE SUBORDINATE IN BOTH BANDS."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	"SKALKAHO CREEK, ABOUT 4 3/4 MI. WSW (?) OF GRANTSDALE"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
840	-113.816667	45.833333	113	49	0	W	45	50	0	N	US	MT	Ravalli	250000	Dillon	Outcrop or artificial surface exposure	Quartz monzonite	"IDAHO BATHOLITH. MEDIUM-GRAINED QUARTZ MONZONITE COMPOSED OF ORTHOCLASE (PARTLY SERICITIC) PHENOCRYSTS IN A GROUNDMASS OF QUARTZ, PLAGIOCLASE, MUSCOVITE, AND CHLORITE-BIOTITE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	ABOUT 1/2 MI. N(?) OF SULA ALONG US ROUTE 93	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
841	-112.316667	45.833333	112	19	0	W	45	50	0	N	US	MT	Jefferson	24000	Grace	Outcrop or artificial surface exposure	Quartz monzonite	"BOULDER BATHOLITH. COARSE-GRAINED QUARTZ MONZONITE COMPOSED OF PLAGIOCLASE, ORTHOCLASE (PARTIALLY ALTERED), QUARTZ, BIOTITE, AND HORNBLENDE"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	ALONG US ROUTE 10 ABOUT 2.7 MI. W OF INTERSECTION WITH MONTANA ROUTE 41	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
842	-112.458333	45.950000	112	27	30	W	45	57	0	N	US	MT	Silver Bow	24000	Homestake	Outcrop or artificial surface exposure	Quartz monzonite	"BOULDER BATHOLITH. COARSE-GRAINED QUARTZ MONZONITE COMPOSED OF PLAGIOCLASE (ALTERED), ORTHOCLASE (PARTIAL ALTERATION), QUARTZ, BIOTITE-CHLORITE, AND HORNBLENDE (PLAGIOCLASE AND QUARTZ INCLUSIONS)."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	2 MI. SE OF BUTTE AND N OF US ROUTE 10	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
843	-112.752778	45.752778	112	45	10	W	45	45	10	N	US	MT	Silver Bow	24000	Dewey	Outcrop or artificial surface exposure	Diorite	"BOULDER BATHOLITH. MEDIUM-GRAINED, SLIGHTLY PORPHYRITIC DIORITE COMPOSED OF HORNBLENDE AND BIOTITE PHENOCRYSTS IN A GROUNDMASS OF PLAGIOCLASE AND ORTHOCLASE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	ALONG MONTANA ROUTE 43 IMMEDIATELY W OF DIVIDE	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
844	-112.616667	45.850000	112	37	0	W	45	51	0	N	US	MT	Silver Bow	62500	Butte South	Outcrop or artificial surface exposure	Quartz monzonite	"BOULDER BATHOLITH. PORPHYRITIC QUARTZ MONZONITE COMPOSED OF QUARTZ, MICROCLINE, AND BIOTITE PHENOCRYSTS IN A GROUNDMASS OF PLAGIOCLASE, QUARTZ, ORTHOCLASE, BIOTITE, AND MINOR HORNBLENDE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	ALONG FOREST SERVICE ROAD 2.3 MI E OF US ROUTE 91 AND 11 MI. S OF US ROUTE 10	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
845	-112.236389	46.575278	112	14	11	W	46	34	31	N	US	MT	Lewis and Clark	62500	Helena	Outcrop or artificial surface exposure	Quartz monzonite(?)	"BOULDER BATHOLITH. PORPHYRITIC QUARTZ MONZONITE (?) COMPOSED OF PLAGIOCLASE, ORTHOCLASE, BIOTITE, AND ALTERED HORNBLENDE PHENOCRYSTS IN A GROUNDMASS OF QUARTZ, ORTHOCLASE, AND BIOTITE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NE1/4 SW1/4 SEC. 33, T10N, R5W, ALONG US ROUTE 12 (10N--COMPILER), 5 MI. E OF MC DONALD PASS"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
846	-112.464444	46.034444	112	27	52	W	46	2	4	N	US	MT	Silver Bow	62500	Elk Park	Outcrop or artificial surface exposure	Quartz monzonite	"BOULDER BATHOLITH. COARSE-GRAINED QUARTZ MONZONITE COMPOSED OF PLAGIOCLASE, QUARTZ, ORTHOCLASE (SOMEWHAT SERICITIC), BIOTITE (SOME CHLORITIZATION), AND HORNBLENDE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SW1/4 SW1/4 SEC. 3, T3N, R7W, ALONG US ROUTE 91, 3 MI. NE OF BUTTE"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
847	-112.365278	46.166667	112	21	55	W	46	10	0	N	US	MT	Jefferson	62500	Elk Park	Outcrop or artificial surface exposure	Quartz monzonite	"BOULDER BATHOLITH.  COARSE-GRAINED QUARTZ MONZONITE COMPOSED OF PLAGIOCLASE, ORTHOCLASE (MINOR SERICITE), BIOTITE, AND HORNBLENDE"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SW1/4 SW1/4 SEC. 21, T5N, R6W; ALONG US ROUTE 91, 13.2 MILES NE OF BUTTE"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
848	-109.242222	47.176667	109	14	32	W	47	10	36	N	US	MT	Fergus	62500	Judith Peak	Outcrop or artificial surface exposure	Diorite	"PORPHYRITIC DIORITE COMPOSED OF ORTHOCLASE (BADLY SERICITIZED) AND HORNBLENDE PHENOCRYSTS IN A GROUNDMASS OF ORTHOCLASE, HORNBLENDE, PLAGIOCLASE, QUARTZ (?) WITH MUCH SERICITE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SW1/4 NW1/4 SEC. 6, T16N, R20E, ABOUT 3/4 MILE W OF MAIDEN ALONG WARM SPRING CREEK, JUDITH MOUNTAINS"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
849	-110.636389	47.081111	110	38	11	W	47	4	52	N	US	MT	Judith Basin	62500	Barker	Outcrop or artificial surface exposure	Syenite(?)	"PORPHYRITIC SYENITE (?) COMPOSED OF ORTHOCLASE (MODERATELY SERICITIZED) AND PLAGIOCLASE PHENOCRYSTS IN A GROUNDMASS OF BIOTITE, HORNBLENDE (SOME ALTERATION), AND QUARTZ."	Lamont (Columbia University)	"Madden, C.T."	75 05	Accurate to within 1 minute (~1 mile)	"1/2 MI NE OF BARKER, LITTLE BELT MOUNTAINS"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
850	-111.697778	45.534444	111	41	52	W	45	32	4	N	US	MT	Madison	62500	Norris 	Outcrop or artificial surface exposure	Quartz monzonite	"TOBACCO ROOT BATHOLITH. MEDIUM-GRAINED QUARTZ MONZONITE COMPOSED OF PLAGIOCLASE, QUARTZ, ORTHOCLASE, BIOTITE, AND  HORNBLENDE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SW1/4 NW1/4 SEC. 35, T3S, R1W, 2 MI S OF NORRIS ALONG MONTANA ROUTE 287A"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
851	-115.591667	48.487500	115	35	30	W	48	29	15	N	US	MT	Lincoln	24000	Libby	Outcrop or artificial surface exposure	Syenite	"LIBBY STOCK. PORPHYRITIC SYENITE COMPOSED OF ORTHOCLASE PHENOCRYSTS IN A GROUNDMASS OF PLAGIOCLASE, AUGITE (ALTERED TO HORNBLENDE AROUND EDGES), PRIMARY HORNBLENDE (?), AND ORTHOCLASE"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SW1/4 SE1/4 SEC. 32, T31N (?), R31W, ABOUT 6 MILES N OF LIBBY"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
852	-114.995833	39.261111	114	59	45	W	39	15	40	N	US	NV	White Pine	24000	Ruth	Core or cutting	Rhyolite	"FINE-GRAINED, PORPHYRITIC RHYOLITE INTRUSIVE COMPOSED OF QUARTZ, BIOTITE, AND PLAGIOCLASE (SERICITE ALONG CRACKS) PHENOCRYSTS IN A GROUNDMASS OF QUARTZ, ORTHOCLASE, AND BIOTITE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SW1/4 SE1/4 SEC. 9, T16N, R62E, DRILL CORE FROM N SIDE OF LIBERTY PIT NEAR RUTH , ROBINSON MINING DISTRICT"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
853	-114.991667	39.255556	114	59	30	W	39	15	20	N	US	NV	White Pine	24000	Ruth	Outcrop or artificial surface exposure	Monzonite	"FINE-GRAINED PORPHYRITIC MONZONITE, CUTTING LIBERTY PIT STOCK, COMPOSED OF PLAGIOCLASE, ORTHOCLASE (STRONG SERICITIZATION), HORNBLENDE (INCIPIENT ALTERATION) PHENOCRYSTS IN A GROUNDMASS OF ORTHOCLASE, PLAGIOCLASE, QUARTZ (?), AND HORNBLENDE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SE1/4 NE1/4 SEC. 16, T16N, R62E, LIBERTY PIT NEAR RUTH, ROBINSON MINING DISTRICT"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
854	-114.920833	39.261111	114	55	15	W	39	15	40	N	US	NV	White Pine	24000	Ruth	Outcrop or artificial surface exposure	Monzonite	"LANE VALLEY STOCK. PORPHYRITIC MONZONITE COMPOSED OF PLAGIOCLASE (STRONGLY ZONED), ORTHOCLASE, AND HORNBLENDE (RESORBED, MANY INCLUSIONS) PHENOCRYSTS IN A GROUNDMASS OF ORTHOCLASE, PLAGIOCLASE, AND QUARTZ."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SW1/4 SE1/4 SEC. 7, T16N, R63E, 2 MI. W OF ELY ALONG US ROUTE 50, ROBINSON MINING DISTRICT"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
855	-115.010000	39.268056	115	0	36	W	39	16	5	N	US	NV	White Pine	24000	Riepetown	Outcrop or artificial surface exposure	Monzonite	"WEARY FLAT STOCK. MEDIUM-GRAINED MONZONITE COMPOSED OF PLAGIOCLASE, ORTHOCLASE, HORNBLENDE (INCLUSIONS OF PLAGIOCLASE AND SPHENE), AND QUARTZ."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SE1/4 NE1/4 SEC. 8, T16N, R62E, 1 1/2 MI. SW OF RUTH ALONG NEVADA ROUTE 44, ROBINSON MINING DISTRICT (LONG. VALUE CORRECTED BYJ.H. SCHILLING)"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
856	-114.994444	39.261111	114	59	40	W	39	15	40	N	US	NV	White Pine	24000	Ruth	Quarry	Monzonite	"LIBERTY PIT STOCK. PORPHYRITIC MONZONITE COMPOSED OF PLAGIOCLASE AND HORNBLENDE (PLAGIOCLASE AND SPHENE INCLUSIONS) PHENOCRYSTS IN A GROUNDMASS OF ORTHOCLASE, PLAGIOCLASE, AND QUARTZ."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SW1/4 SE1/4 SEC. 9, T16N, R62E, LIBERTY OPEN-PIT COPPER MINE NEAR RUTH, ROBINSON MINING DISTRICT"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
857	-114.995833	39.256944	114	59	45	W	39	15	25	N	US	NV	White Pine	24000	Ruth	Core or cutting	Monzonite	"LIBERTY PIT STOCK. PORPHYRITIC MONZONITE COMPOSED OF ORTHOCLASE, PLAGIOCLASE, QUARTZ AND HORNBLENDE (MANY SMALL INCLUSIONS) PHENOCRYSTS IN A GROUNDMASS OF ORTHOCLASE, QUARTZ, AND BIOTITE (SUBORDINATE TO HORNBLENDE AND OCCASIONALLY CHLORITIC."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NW1/4 NE1/4 SEC. 16, T16N, R62E, DRILL CORE FROM LIBERTY OPEN-PIT COPPER MINE NEAR RUTH , ROBINSON MINING DISTRICT"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
858	-114.991667	39.261111	114	59	30	W	39	15	40	N	US	NV	White Pine	24000	Ruth	Quarry	Monzonite	"LIBERTY PIT STOCK.  HIGHLY ALTERED MONZONITE PORPHYRY COMPOSED OF ALTERED ORTHOCLASE, QUARTZ, AND BIOTITE (LIGHT BROWN, CLUSTERED) PHENOCRYSTS IN A GROUNDMASS OF QUARTZ AND SERICITE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SE1/4 SE1/4 SEC. 9, T16N, R62E, NE CORNER OF LIBERTY OPEN-PIT COPPER MINE NEAR RUTH , ROBINSON MINING DISTRICT"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
859	-115.005556	39.261111	115	0	20	W	39	15	40	N	US	NV	White Pine	24000	Riepetown	Quarry	Monzonite	"ALTERED MONZONITE PORPHYRY COMPOSED OF ORTHOCLASE (WELL SERICITIZED), QUARTZ, AND BIOTITE (VERY LIGHT BROWN, CLUSTERED) PHENOCRYSTS IN A GROUNDMASS OF QUARTZ AND SERICITE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SW1/4 SW1/4 SEC. 9, T16N, R62E, EMMA OPEN-PIT COPPER MINE NEAR RUTH , ROBINSON MINING DISTRICT"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
860	-114.757222	41.760000	114	45	26	W	41	45	36	N	US	NV	Elko	62500	Contact	Outcrop or artificial surface exposure	Granodiorite	"CONTACT STOCK. PORPHYRITIC GRANODIORITE COMPOSED OF PLAGIOCLASE (ZONED, PATCHY SERICITIZATION) PHENOCRYSTS IN A GROUNDMASS OF ORTHOCLASE, PLAGIOCLASE, QUARTZ, BIOTITE (SOME CHLORITIC GRAINS), AND HORNBLENDE (QUARTZ AND FELDSPAR INCLUSIONS)."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	1 MI. S OF CONTACT ALONG US ROUTE 93	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
861	-115.066667	41.041667	115	4	0	W	41	2	30	N	US	NV	Elko	24000	Welcome	Outcrop or artificial surface exposure	Granodiorite	"MEDIUM-GRAINED GRANODIORITE COMPOSED OF PLAGIOCLASE, ORTHOCLASE, QUARTZ, BIOTITE (SOME GRAINS PARTLY CHLORITIC), AND MINOR HORNBLENDE .  NORTH HUMBOLDT MOUNTAINS INTRUSIVE"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	"8 MI. SW OF WELLS, NORTH HUMBOLDT MOUNTAINS"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
862	-114.306944	40.913889	114	18	25	W	40	54	50	N	US	NV	Elko	24000	Silver Zone Pass	Outcrop or artificial surface exposure	Granite	"SILVER ZONE PLUTON. MEDIUM-GRAINED GRANITE COMPOSED OF MICROCLINE, QUARTZ, PLAGIOCLASE (PARTLY SERICITE), BIOTITE (SOMEWHAT CHLORITIC), AND HORNBLENDE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	1 MI. E OF SILVER ZONE PASS ALONG US ROUTE 40	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
863	-108.069444	32.800000	108	4	10	W	32	48	0	N	US	NM	Grant	24000	Santa Rita	Core or cutting	Granodiorite	"COARSE-GRAINED GRANODIORITE DIKE IN SANTA RITA STOCK COMPOSED OF PLAGIOCLASE, MICROCLINE, QUARTZ, BIOTITE (SOME CHLORITIZATION), HORNBLENDE, AND MINOR HYPERSTHENE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NE1/4 SE1/4 SEC. 27, T17S, R12W, DRILL CORE FROM NORTH PIT, SANTA RITA COPPER MINE"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
864	-108.069444	32.799444	108	4	10	W	32	47	58	N	US	NM	Grant	24000	Santa Rita	Core or cutting	Granodiorite(?)	"SANTA RITA STOCK. PORPHYRITIC GRANODIORITE (?) COMPOSED OF PLAGIOCLASE (ZONED, CLOUDED), MICROCLINE (COMMONLY SERICITIZED), AND BIOTITE (SLIGHTLY CHLORITIC) PHENOCRYSTS IN A GROUNDMASS OF QUARTZ, ORTHOCLASE, AND BIOTITE (VERY CHLORITIC)."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NE1/4 SE1/4 SEC. 27, T17S, R12W, NORTH PIT, SANTA RITA COPPER MINE"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
865	-108.075278	32.839444	108	4	31	W	32	50	22	N	US	NM	Grant	24000	Santa Rita	Outcrop or artificial surface exposure	Granodiorite	"HANOVER-FIERRO STOCK. COARSE, EQUIGRANULAR GRANODIORITE COMPOSED OF PLAGIOCLASE (PARTIALLY ALTERED), MICROCLINE, QUARTZ, BIOTITE (SLIGHT CHLORITIZATION), AND ALTERED HORNBLENDE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SW1/4 SW1/4 SEC. 10, T17S, R12W, 1/2 MILE S OF FIERRO ALONG HANOVER CREEK."	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
866	-108.075000	32.839167	108	4	30	W	32	50	21	N	US	NM	Grant	24000	Santa Rita	Outcrop or artificial surface exposure	Granodiorite	"HANOVER-FIERRO STOCK. COARSE, EQUIGRANULAR GRANODIORITE COMPOSED OF PLAGIOCLASE (PARTIALLY ALTERED), MICROCLINE, QUARTZ, BIOTITE (SLIGHT CHLORITIZATION), AND ALTERED HORNBLENDE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SW1/4 SW1/4 SEC. 10, T17S, R12W, 1/2 MILE S OF FIERRO ALONG HANOVER CREEK."	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
867	-108.075556	32.828611	108	4	32	W	32	49	43	N	US	NM	Grant	24000	Santa Rita	Outcrop or artificial surface exposure	Granodiorite	"HANOVER-FIERRO STOCK. PORPHYRITIC GRANODIORITE COMPOSED OF PLAGIOCLASE, ORTHOCLASE, HORNBLENDE (MANY SMALL QUARTZ, FELDSPAR, AND MAGNETITE INCLUSIONS) AND BIOTITE PHENOCRYSTS IN A GROUNDMASS OF QUARTZ, ORTHOCLASE, AND MINOR BIOTITE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NE1/4 SW1/4 SEC. 15, T17S, R12W, GULCH 1/4 MILE E OF HANOVER CREEK"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
868	-108.408333	32.637500	108	24	30	W	32	38	15	N	US	NM	Grant	24000	Wind Mountain	Outcrop or artificial surface exposure	Quartz monzonite	"TYRONE STOCK. COARSE-GRAINED QUARTZ MONZONITE COMPOSED OF ORTHOCLASE, QUARTZ, PLAGIOCLASE (SERICITIZED ALONG CRACKS), AND BIOTITE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NE1/4 SE1/4 SEC. 20, T19S, R15W, 3 1/4 MI. WSW OF TYRONE"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
869	-108.162500	32.793056	108	9	45	W	32	47	35	N	US	NM	Grant	24000	Fort Bayard	Outcrop or artificial surface exposure	Diorite	"PORPHYRITIC DIORITE COMPOSED OF PLAGIOCLASE (BADLY SERICITIZED), HORNBLENDE (50% ALTERED TO QUARTZ AND SERICITE) AND QUARTZ PHENOCRYSTS IN A GROUNDMASS OF PLAGIOCLASE AND QUARTZ."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NW1/4 SW1/4 SEC. 26, T17S, R13W, 1 MI. W OF CENTRAL ALONG US ROUTE 180"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
870	-108.225000	32.856944	108	13	30	W	32	51	25	N	US	NM	Grant	24000	Fort Bayard	Outcrop or artificial surface exposure	Granodiorite	"PINOS ALTOS INTRUSIVE COMPLEX. PORPHYRITIC GRANODIORITE COMPOSED OF PLAGIOCLASE AND OTHOCLASE PHENOCRYSTS IN A GROUNDMASS OF QUARTZ, ORTHOCLASE, PLAGIOCLASE, HORNBLENDE, AND BIOTITE (ALMOST ENTIRELY CHLORITIC)."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NW1/4 SE1/4 SEC. 6, T17S, R13W, IMMEDIATELY S OF PINOS ALTOS ALONG NEW MEXICO ROUTE 25"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
871	-108.091667	32.762500	108	5	30	W	32	45	45	N	US	NM	Grant	24000	Santa Rita	Outcrop or artificial surface exposure	Ignimbrite	"KNEELING NUN VOLCANICS. RHYOLITIC IGNIMBRITE COMPOSED OF QUARTZ, PLAGIOCLASE, SANIDINE, AND BIOTITE PHENOCRYSTS IN A FINE-GRAINED GROUNDMASS."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NW1/4 SEC. 9, T18S, R12W, LUCKY BILL CANYON 1 1/2 MI. S OF SANTA RITA COPPER MINE PIT"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
872	-105.766667	33.416667	105	46	0	W	33	25	0	N	US	NM	Lincoln	62500	Sierra Blanca Peak	Outcrop or artificial surface exposure	Syenite	"BONITA LAKE STOCK. MEDIUM-GRAINED SYENITE COMPOSED OF VERY SERICITE ORTHOCLASE, PLAGIOCLASE, QUITE FRESH BIOTITE, QUARTZ, AND SEVERELY ALTERED HORNBLENDE (?)."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 5 minute (~5 miles)	9 MI NNW OF RUIDOSO	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
873	-103.741667	44.355556	103	44	30	W	44	21	20	N	US	SD	Lawrence	24000	Deadwood South	Core or cutting	Phonolite	"HOMESTAKE MINE PHONOLITE. PORPHYRITIC PHONOLITE DIKE CONSISTING OF AEGIRINE-AUGITE, BIOTITE (STRONGLY RESORBED), AND ORTHOCLASE PHENOCRYSTS IN A GROUNDMASS OF PLAGIOCLASE AND AEGIRINE-AUGITE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SE1/4 NW1/4 SEC. 34, T5N, R3E, DRILL CORE FROM THE 5150 FOOT LEVEL IN HOMESTAKE MINE, LEAD, BLACK HILLS"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
874	-103.752778	44.393611	103	45	10	W	44	23	37	N	US	SD	Lawrence	62500	Spearfish	Outcrop or artificial surface exposure	Quartz monzonite	"SHEEP MOUNTAIN STOCK. PORPHYRITIC QUARTZ MONZONITE COMPOSED OF ORTHOCLASE, QUARTZ, SLIGHTLY ALTERED PLAGIOCLASE, AND BIOTITE PHENOCRYSTS IN A GROUNDMASS OF QUARTZ AND ORTHOCLASE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"2 3/4 MI. N OF LEAD ALONG ROAD TO MOUNT ROOSEVELT SUMMIT, BLACK HILLS."	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
875	-103.695833	44.319444	103	41	45	W	44	19	10	N	US	SD	Lawrence	24000	Deadwood South	Outcrop or artificial surface exposure	Monzonite	"GILT EDGE MINE PLUTON. PORPHYRITIC MONZONITE COMPOSED OF PLAGIOCLASE, ORTHOCLASE (INCIPIENT SERICITIZATION), PRIMARY BIOTITE, AND ALTERED HORNBLENDE PHENOCRYSTS IN A GROUNDMASS OF ORTHOCLASE AND SERICITE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NE1/4 SE1/4 SEC. 12, T4N, R3E, 4 MI. ESE OF LEAD"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
876	-103.425000	44.474444	103	25	30	W	44	28	28	N	US	SD	Meade	24000	Fort Meade	Outcrop or artificial surface exposure	Quartz monzonite	"BEAR BUTTE LACCOLITH. PORPHYRITIC QUARTZ MONZONITE COMPOSED OF ORTHOCLASE, BIOTITE, AND QUARTZ PHENOCRYSTS IN A WELL SERICITIZED GROUNDMASS OF QUARTZ, PLAGIOCLASE, ORTHOCLASE(?), AND BIOTITE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NW1/4 NW1/4 SEC. 20, T6N, R6E, AT BEAR BUTTE, 6 MI. NE OF STURGIS"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
877	-103.541111	44.320833	103	32	28	W	44	19	15	N	US	SD	Meade	24000	Deadman Mountain	Outcrop or artificial surface exposure	Quartz monzonite	"VANNOCKER LACCOLITH. PORPHYRITIC QUARTZ MONZONITE COMPOSED OF PLAGIOCLASE, BIOTITE, AND ORTHOCLASE PHENOCRYSTS IN A GROUNDMASS OF QUARTZ, VERY SERICITIC ORTHOCLASE, AND BIOTITE"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SE1/4 NW1/4 SEC. 8. T4N, R5E, ABOUT 6 MI. SSW OF STURGIS ALONG SOUTH DAKOTA ROUTE 135"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
878	-103.830556	44.328333	103	49	50	W	44	19	42	N	US	SD	Lawrence	62500	Spearfish	Float	Grogudite	"TERRY PEAK PLUTON. PORPHYRITIC GRORUDITE COMPOSED OF ORTHOCLASE (SERICITIZED), AEGIRINE , AND HORNBLENDE(?) PHENOCRYSTS IN A GROUNDMASS OF ORTHOCLASE, PLAGIOCLASE(?), AND SERICITE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	LARGE BOULDER ALONG ROUTE 194 IMMEDIATELY BELOW TERRY PEAK LOOKOUT	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
879	-112.201667	38.496389	112	12	6	W	38	29	47	N	US	UT	Piute	62500	Marysvale	Mine	Quartz monzonite	"MARYSVALE STOCK. MEDIUM-GRAINED QUARTZ MONZONITE COMPOSED OF PLAGIOCLASE, CLOUDY ORTHOCLASE, QUARTZ, ALTERED-TO-UNALTERED BIOTITE, AND ALTERED HORNBLENDE"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NE1/4 NE1/4 SEC. 4, T27S, R3W, DUMP OF PROSPECTOR MINE, NE OF MARYSVALE"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
880	-112.258333	38.508889	112	15	30	W	38	30	32	N	US	UT	Sevier	62500	Sevier	Outcrop or artificial surface exposure	Monzonite	"PORPHYRITIC MONZONITE DIKE COMPOSED OF PLAGIOCLASE (LOCAL SERICITIZATION) AND ALTERED-TO-UNALTERED HORNBLENDE PHENOCRYSTS IN A GROUNDMASS OF VERY FINE CHLORITE, SERICITE, AND MAGNETITE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SW1/4 NE1/4 SEC. 29, T26S, R4W, ABOUT 4 MI. N OF MARYSVALE ALONG US ROUTE 89"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
881	-112.148611	40.520833	112	8	55	W	40	31	15	N	US	UT	Salt Lake	24000	Bingham Canyon	Quarry	Quartz latite	"PORPHYRITIC QUARTZ DIKE, IN BINGHAM STOCK, COMPOSED OF QUARTZ, BIOTITE (WELL DEVELOPED, RICH BROWN), COMPLETELY SERICITIZED FELDSPAR PHENOCRYSTS IN A GROUNDMASS OF QUARTZ AND SERICITE"	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SW1/4 SE1/4 SEC. 26, T3S, R3W, BINGHAM OPEN-PIT COPPER MINE"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
882	-112.154167	40.525000	112	9	15	W	40	31	30	N	US	UT	Salt Lake	24000	Bingham Canyon	Quarry	Latite	"PORPHYRITIC BIOTITE LATITE DIKE, IN BINGHAM STOCK, COMPOSED OF BIOTITE (COMMONLY GREEN) AND PLAGIOCLASE (RARE, PARTIALLY ALTERED) PHENOCRYSTS IN A GROUNDMASS OF QUARTZ, GREEN BIOTITE, AND SERICITE."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"NW1/4 NW1/4 SEC. 35, T3S, R3W, BINGHAM OPEN-PIT COPPER MINE"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
883	-112.162500	40.509722	112	9	45	W	40	30	35	N	US	UT	Salt Lake	24000	Bingham Canyon	Outcrop or artificial surface exposure	Quartz monzonite	"LAST CHANCE STOCK. MEDIUM-GRAINED QUARTZ MONZONITE COMPOSED OF PLAGIOCLASE, ORTHOCLASE, QUARTZ, BIOTITE (INCIPIENT CHLORITIZATION) AND ALTERED AUGITE(?)."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"SE1/4 SE1/4 SEC. 34, T3S, R3W, 2 1/2 MI. SSW OF BINGHAM"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
884	-111.699444	40.573333	111	41	58	W	40	34	24	N	US	UT	Salt Lake	24000	Dromedary Peak	Outcrop or artificial surface exposure	Quartz monzonite	"LITTLE COTTONWOOD STOCK. PORPHYRITIC QUARTZ MONZONITE COMPOSED OF ORTHOCLASE PHENOCRYSTS IN A GROUNDMASS OF PLAGIOCLASE (PATCHY SERICITIZATION), QUARTZ, ORTHOCLASE, AND BIOTITE (MODERATE CHLORITIZATION)."	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"5 MI. E OF CANYON MOUTH ALONG UTAH ROUTE 210, OPPOSITE TANNER FLAT"	"Mcdowell, F.W., 1971, K-Ar Ages Of Igneous Rocks From The Western United States: Isochron/West, No. 2, p. 1-16."	
885	-109.231944	38.691667	109	13	55	W	38	41	30	N	US	UT	Grand	62500	Polar Mesa	Outcrop or artificial surface exposure	Ash	TYPE O PEARLETTE ASH IN HARPOLE MESA FORMATION	USGS Denver	"Madden, C.T."	75 04	Accurate to within 1 minute (~1 mile)	"SE1/4 NE1/4 SEC. 26, T24S, R24E, ONION CREEK, LA SAL MOUNTAINS"	"Naeser, C.W., Izett, G.A., and Wilcox, R.E., 1973, Zircon Fission-Track Ages Of Pearlette Family Ash Beds In Meade County, Kansas: Geology, v.1, p. 187-189."	
886	-100.340278	37.375833	100	20	25	W	37	22	33	N	US	KS	Meade	24000	Meade NE	Outcrop or artificial surface exposure	Ash	TYPE O PEARLETTE ASH	USGS Denver	"Madden, C.T."	75 04	Accurate to within 0.1 minute (~500 feet)	"SW1/4 SEC. 2, T31S, R28W, NEAR ABANDONED SITE OF THE CUDAHY ASH MINE"	"Naeser, C.W., Izett, G.A., and Wilcox, R.E., 1973, Zircon Fission-Track Ages Of Pearlette Family Ash Beds In Meade County, Kansas: Geology, v.1, p. 187-189."	
887	-100.340278	37.375833	100	20	25	W	37	22	33	N	US	KS	Meade	24000	Meade NE	Outcrop or artificial surface exposure	Ash	TYPE O PEARLETTE ASH	USGS Denver	"Madden, C.T."	75 04	Accurate to within 0.1 minute (~500 feet)	"SW1/4 SEC. 2, T31S, R28W, NEAR ABANDONED SITE OF THE CUDAHY ASH MINE"	"Naeser, C.W., Izett, G.A., and Wilcox, R.E., 1973, Zircon Fission-Track Ages Of Pearlette Family Ash Beds In Meade County, Kansas: Geology, v.1, p. 187-189."	
888	-100.340278	37.375833	100	20	25	W	37	22	33	N	US	KS	Meade	24000	Meade NE	Outcrop or artificial surface exposure	Ash	TYPE O PEARLETTE ASH	USGS Denver	"Madden, C.T."	75 04	Accurate to within 0.1 minute (~500 feet)	"SW1/4 SEC. 2, T31S, R28W, NEAR ABANDONED SITE OF THE CUDAHY ASH MINE"	"Naeser, C.W., Izett, G.A., and Wilcox, R.E., 1973, Zircon Fission-Track Ages Of Pearlette Family Ash Beds In Meade County, Kansas: Geology, v.1, p. 187-189."	
889	-100.369444	37.168056	100	22	10	W	37	10	5	N	US	KS	Meade	24000	Irish Flats NE	Outcrop or artificial surface exposure	Ash	TYPE B PEARLETTE ASH (CROOKED CREEK FORMATION); ASH IS PROBABLY EQUIVALENT TO THE HUCKLEBERRY RIDGE TUFF IN WYOMING.	USGS Denver	"Madden, C.T."	75 04	Accurate to within 0.1 minute (~500 feet)	"NW1/4 NE1/4 SEC. 21, T33S, R28W"	"Naeser, C.W., Izett, G.A., and Wilcox, R.E., 1973, Zircon Fission-Track Ages Of Pearlette Family Ash Beds In Meade County, Kansas: Geology, v.1, p. 187-189."	
890	-100.369444	37.168056	100	22	10	W	37	10	5	N	US	KS	Meade	24000	Irish Flats NE	Outcrop or artificial surface exposure	Ash	TYPE B PEARLETTE ASH (CROOKED CREEK FORMATION); ASH IS PROBABLY EQUIVALENT TO THE HUCKLEBERRY RIDGE TUFF IN WYOMING.	USGS Denver	"Madden, C.T."	75 04	Accurate to within 0.1 minute (~500 feet)	"NW1/4 NE1/4 SEC. 21, T33S, R28W"	"Naeser, C.W., Izett, G.A., and Wilcox, R.E., 1973, Zircon Fission-Track Ages Of Pearlette Family Ash Beds In Meade County, Kansas: Geology, v.1, p. 187-189."	
891	-100.369444	37.168056	100	22	10	W	37	10	5	N	US	KS	Meade	24000	Irish Flats NE	Outcrop or artificial surface exposure	Ash	TYPE B PEARLETTE ASH (CROOKED CREEK FORMATION); ASH IS PROBABLY EQUIVALENT TO THE HUCKLEBERRY RIDGE TUFF IN WYOMING.	USGS Denver	"Madden, C.T."	75 04	Accurate to within 0.1 minute (~500 feet)	"NW1/4 NE1/4 SEC. 21, T33S, R28W"	"Naeser, C.W., Izett, G.A., and Wilcox, R.E., 1973, Zircon Fission-Track Ages Of Pearlette Family Ash Beds In Meade County, Kansas: Geology, v.1, p. 187-189."	
892	-100.369444	37.168056	100	22	10	W	37	10	5	N	US	KS	Meade	24000	Irish Flats NE	Outcrop or artificial surface exposure	Ash	TYPE B PEARLETTE ASH (CROOKED CREEK FORMATION); ASH IS PROBABLY EQUIVALENT TO THE HUCKLEBERRY RIDGE TUFF IN WYOMING.	USGS Denver	"Madden, C.T."	75 04	Accurate to within 0.1 minute (~500 feet)	"NW1/4 NE1/4 SEC. 21, T33S, R28W"	"Naeser, C.W., Izett, G.A., and Wilcox, R.E., 1973, Zircon Fission-Track Ages Of Pearlette Family Ash Beds In Meade County, Kansas: Geology, v.1, p. 187-189."	
893	-100.369444	37.168056	100	22	10	W	37	10	5	N	US	KS	Meade	24000	Irish Flats NE	Outcrop or artificial surface exposure	Ash	TYPE B PEARLETTE ASH (CROOKED CREEK FORMATION); ASH IS PROBABLY EQUIVALENT TO THE HUCKLEBERRY RIDGE TUFF IN WYOMING.	USGS Denver	"Madden, C.T."	75 04	Accurate to within 0.1 minute (~500 feet)	"NW1/4 NE1/4 SEC. 21, T33S, R28W"	"Naeser, C.W., Izett, G.A., and Wilcox, R.E., 1973, Zircon Fission-Track Ages Of Pearlette Family Ash Beds In Meade County, Kansas: Geology, v.1, p. 187-189."	
894	-100.369444	37.168056	100	22	10	W	37	10	5	N	US	KS	Meade	24000	Irish Flats NE	Outcrop or artificial surface exposure	Ash	TYPE B PEARLETTE ASH (CROOKED CREEK FORMATION); ASH IS PROBABLY EQUIVALENT TO THE HUCKLEBERRY RIDGE TUFF IN WYOMING.	USGS Denver	"Madden, C.T."	75 04	Accurate to within 0.1 minute (~500 feet)	"NW1/4 NE1/4 SEC. 21, T33S, R28W"	"Naeser, C.W., Izett, G.A., and Wilcox, R.E., 1973, Zircon Fission-Track Ages Of Pearlette Family Ash Beds In Meade County, Kansas: Geology, v.1, p. 187-189."	
895	-100.369444	37.168056	100	22	10	W	37	10	5	N	US	KS	Meade	24000	Irish Flats NE	Outcrop or artificial surface exposure	Ash	TYPE B PEARLETTE ASH (CROOKED CREEK FORMATION); ASH IS PROBABLY EQUIVALENT TO THE HUCKLEBERRY RIDGE TUFF IN WYOMING.	USGS Denver	"Madden, C.T."	75 04	Accurate to within 0.1 minute (~500 feet)	"NW1/4 NE1/4 SEC. 21, T33S, R28W"	"Naeser, C.W., Izett, G.A., and Wilcox, R.E., 1973, Zircon Fission-Track Ages Of Pearlette Family Ash Beds In Meade County, Kansas: Geology, v.1, p. 187-189."	
896	-110.055833	45.442222	110	3	21	W	45	26	32	N	US	MT	Sweet Grass	62500	Mount Douglas	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF DIABASE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 06	Accurate to within 1 minute (~1 mile)	"STILLWATER COMPLEX, BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
897	-110.061389	45.394722	110	3	41	W	45	23	41	N	US	MT	Sweet Grass	62500	Mount Douglas	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF DIABASE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"STILLWATER COMPLEX, BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
898	-109.445556	45.040000	109	26	44	W	45	2	24	N	US	MT	Carbon	62500	Mount Maurice	Outcrop or artificial surface exposure	Diabase	"SAMPLE TAKEN FROM NON-CHILLED, FINEST GRAINED PORTION OF DIABASE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE."	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
899	-109.444444	45.039444	109	26	40	W	45	2	22	N	US	MT	Carbon	62500	Mount Maurice	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF DIABASE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLITE	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
900	-109.440278	45.049722	109	26	25	W	45	2	59	N	US	MT	Carbon	62500	Mount Maurice	Outcrop or artificial surface exposure	Diabase	"SAMPLE TAKEN FROM NON-CHILLED, FINEST-GRAINED PORTION OF DIABASE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE."	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
901	-109.640833	45.005000	109	38	27	W	45	0	18	N	US	MT	Carbon	62500	Alpine	Outcrop or artificial surface exposure	Diabase(?)	"SAMPLE TAKEN FR0M NON-CHILLED, FINEST-GRAINED PORTION OF MAFIC INTRUSION. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE."	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"BEARTOOTH PLATEAU, SOUTHERN BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
902	-109.635278	45.015833	109	38	7	W	45	0	57	N	US	MT	Carbon	62500	Alpine	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF ONE OF THE BEARTOOTH BUTTE DIKES. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"BEARTOOTH PLATEAU, SOUTHERN BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
903	-109.633889	45.016944	109	38	2	W	45	1	1	N	US	MT	Carbon	62500	Alpine	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF ONE OF THE BEARTOOTH BUTTE DIKES. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"BEARTOOTH PLATEAU, SOUTHERN BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
904	-109.633889	45.022500	109	38	2	W	45	1	21	N	US	MT	Carbon	62500	Alpine	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF DEEP LAKE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"BEARTOOTH PLATEAU, SOUTHERN BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
905	-109.631389	45.003889	109	37	53	W	45	0	14	N	US	MT	Carbon	62500	Alpine	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF DIABASE DIKE	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"BEARTOOTH PLATEAU, SOUTHERN BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
906	-109.658611	45.028056	109	39	31	W	45	1	41	N	US	MT	Carbon	62500	Alpine	Outcrop or artificial surface exposure	Diabase(?)	"SAMPLE TAKEN FR0M NON-CHILLED, FINEST-GRAINED PORTION OF MAFIC INTRUSION. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE."	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"BEARTOOTH PLATEAU, SOUTHERN BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
907	-109.659722	45.027500	109	39	35	W	45	1	39	N	US	MT	Carbon	62500	Alpine	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF ONE OF THE BEARTOOTH DIKES. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"BEARTOOTH PLATEAU, SOUTHERN BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
908	-109.626667	45.019444	109	37	36	W	45	1	10	N	US	MT	Carbon	62500	Alpine	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF DEEP LAKE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"BEARTOOTH PLATEAU, SOUTHERN BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
909	-109.620278	45.022500	109	37	13	W	45	1	21	N	US	MT	Carbon	62500	Alpine	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF DIABASE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"BEARTOOTH PLATEAU, SOUTHERN BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
910	-109.619167	45.021667	109	37	9	W	45	1	18	N	US	MT	Carbon	62500	Alpine	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF DIABASE DIKE. PARTIAL RECRYSTALLIZATION TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"BEARTOOTH PLATEAU, SOUTHTHERN BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
911	-109.640000	45.024444	109	38	24	W	45	1	28	N	US	MT	Carbon	62500	Alpine	Outcrop or artificial surface exposure	Diabase	"SAMPLE TAKEN FRON NON-CHILLED, FINEST-GRAINED PORTION OF A DIABASE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE."	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"BEARTOOTH PLATEAU, SOUTHTHERN BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
912	-109.640000	45.020556	109	38	24	W	45	1	14	N	US	MT	Carbon	62500	Alpine	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF ONE OF THE BEARTOOTH BUTTE DIKES. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"BEARTOOTH PLATEAU, SOUTHERN BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
913	-109.723333	45.060000	109	43	24	W	45	3	36	N	US	MT	Carbon	62500	Alpine	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF DIABASE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"BEARTOOTH PLATEAU, SOUTHERN BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
914	-109.720556	45.058056	109	43	14	W	45	3	29	N	US	MT	Carbon	62500	Alpine	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF DIABASE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"BEARTOOTH PLATEAU, SOUTHERN BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
915	-109.692500	45.030278	109	41	33	W	45	1	49	N	US	MT	Carbon	62500	Alpine	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF DIABASE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"BEARTOOTH PLATEAU, SOUTHERN BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
916	-109.406111	45.027778	109	24	22	W	45	1	40	N	US	MT	Carbon	62500	Mount Maurice	Outcrop or artificial surface exposure	Diabase(?)	"SAMPLE TAKEN FROM NON-CHILLED, FINEST-GRAINED PORTION OF MAFIC INTRUSION. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE."	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
917	-109.413611	45.040556	109	24	49	W	45	2	26	N	US	MT	Carbon	62500	Mount Maurice	Outcrop or artificial surface exposure	Diabase	"SAMPLE TAKEN FROM NON-CHILLED, FINEST-GRAINED MARGIN OF DIABASE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE."	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
918	-109.407500	45.043611	109	24	27	W	45	2	37	N	US	MT	Carbon	62500	Mount Maurice	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF DIABASE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
919	-109.406667	45.046389	109	24	24	W	45	2	47	N	US	MT	Carbon	62500	Mount Maurice	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF DIABASE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
920	-109.401389	45.047500	109	24	5	W	45	2	51	N	US	MT	Carbon	62500	Mount Maurice	Outcrop or artificial surface exposure	Diabase	"SAMPLE TAKEN FROM N0N-CHILLED, FINEST-GRAINED MARGIN OF DIABASE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE."	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
921	-109.409167	45.023889	109	24	33	W	45	1	26	N	US	MT	Carbon	62500	Mount Maurice	Outcrop or artificial surface exposure	Diabase(?)	"SAMPLE TAKEN FROM NON-CHILLED, FINEST-GRAINED PORTION OF MAFIC INTRUSION. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE."	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
922	-109.431944	45.019722	109	25	55	W	45	1	11	N	US	MT	Carbon	62500	Mount Maurice	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF DIABASE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
923	-109.426667	45.023889	109	25	36	W	45	1	26	N	US	MT	Carbon	62500	Mount Maurice	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF DIABASE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	SOUTHERN BEARTOOTH MOUNTAINS	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
924	-109.906667	45.102222	109	54	24	W	45	6	8	N	US	MT	Park	62500	Cooke City	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF DIABASE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"BEARTOOTH PLATEAU, SOUTTHERN BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
925	-109.904167	45.103333	109	54	15	W	45	6	12	N	US	MT	Park	62500	Cooke City	Outcrop or artificial surface exposure	Diabase	SAMPLE TAKEN FROM CHILLED MARGIN OF DIABASE DIKE. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE.	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"BEARTOOTH PLATEAU, SOUTTHERN BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
926	-109.868611	45.130278	109	52	7	W	45	7	49	N	US	MT	Park	62500	Cooke City	Outcrop or artificial surface exposure	Diabase(?)	"SAMPLE TAKEN FROM NON-CHILLED, FINEST-GRAINED PORTION OF MAFIC INTRUSION. PARTIAL RECRYSTALLIZATION OF PYROXENE TO AMPHIBOLE."	"University of Alberta, Rice University, University of North Carolina"	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"BEARTOOTH PLATEAU, SOUTTHERN BEARTOOTH MOUNTAINS"	"Baadsgaard, H., and Mueller, P.A., 1973, K-Ar and Rb-Sr Ages Of Intrusive Precambrian Mafic Rocks, Southern Beartooth Mountains, Montana and Wyoming: Geological Society of America Bulletin, v. 84, p. 3635-3644."	
927	-112.750000	44.616667	112	45	0	W	44	37	0	N	US	MT	Beaverhead	250000	Dubois	Outcrop or artificial surface exposure	Gneiss	DILLON GRANITE GNEISS	Lamont (Columbia University)	"Madden, C.T."	75 05	Accurate to within 30 minutes (~30 miles)	TENDOY RANGE	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
928	-112.716667	44.716667	112	43	0	W	44	43	0	N	US	MT	Beaverhead	24000	Dell	Outcrop or artificial surface exposure	Gneiss	PONY GNEISS	Lamont (Columbia University)	"Madden, C.T."	75 05	Accurate to within 5 minute (~5 miles)	DELL	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
929	-112.500000	45.166667	112	30	0	W	45	10	0	N	US	MT	Beaverhead	250000	Dillion	Outcrop or artificial surface exposure	Schist	GARNET-MUSCOVITE-BIOTITE SCHIST	Lamont (Columbia University)	"Madden, C.T."	75 05	Accurate to within 30 minutes (~30 miles)	EAST OF DILLION	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
930	-111.991667	45.458333	111	59	30	W	45	27	30	N	US	MT	Madison	62500	Virginia City	Outcrop or artificial surface exposure	Gneiss	CHERRY CREEK GNEISS	Lamont (Columbia University)	"Madden, C.T."	75 05	Accurate to within 5 minute (~5 miles)	"RAMSHORN CREEK, NORTH OF VIRGINIA CITY"	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
931	-112.100000	45.300000	112	6	0	W	45	18	0	N	US	MT	Madison	24000	Alder	Outcrop or artificial surface exposure	Pegmatite	PEGMATITE IN CHERRY CREEK GNEISS	Lamont (Columbia University)	"Madden, C.T."	75 05	Accurate to within 5 minute (~5 miles)	NEAR ALDER	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
932	-111.800000	40.950000	111	48	0	W	40	57	0	N	US	UT	Davis	24000	Bountiful Peak	Outcrop or artificial surface exposure	Pegmatite		Lamont (Columbia University)	"Madden, C.T."	75 05	Accurate to within 5 minute (~5 miles)	BOUNTIFUL PEAK	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
933	-103.452778	43.911111	103	27	10	W	43	54	40	N	US	SD	Pennington	24000	Mount Rushmore	Mine	Pegmatite		Lamont (Columbia University)	"Madden, C.T."	75 05	Accurate to within 1 minute (~1 mile)	"BOB INGERSOLL MINE, KEYSTONE"	"Giletti, B.J., and Gast, P.W., 1961, Absolute age of Precambrian rocks in Wyoming and Montana: geochronology of rock systems: Annals of New York Academy of Science, v. 91, p. 454-458"	
934	-105.041667	38.841667	105	2	30	W	38	50	30	N	US	CO	El Paso	24000	Pikes Peak	Outcrop or artificial surface exposure	Granite	WINDY POINT GRANITE	Lamont (Columbia University)	"Madden, C.T."	75 06	Accurate to within 1 minute (~1 mile)	TOP OF PIKES PEAK	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
935	-104.925000	38.875000	104	55	30	W	38	52	30	N	US	CO	El Paso	62500	Colorado Springs	Outcrop or artificial surface exposure	Granite	PIKES PEAK GRANITE	Lamont (Columbia University)	"Marvin, R.F."	75 10	Accurate to within 1 minute (~1 mile)	"UTE PASS AREA, NORTHWEST OF MANITOU SPRINGS"	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
936	-104.941667	38.766667	104	56	30	W	38	46	0	N	US	CO	Teller	62500	Colorado Springs	Outcrop or artificial surface exposure	Granite	MOUNT ROSA GRANITE	Lamont (Columbia University)	"Marvin, R.F."	75 11	Accurate to within 1 minute (~1 mile)	"GOLD CAMP ROAD, SOUTHEAST OF PIKES PEAK"	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
937	-105.000000	38.900000	105	0	0	W	38	54	0	N	US	CO	El Paso	24000	Cascade	Outcrop or artificial surface exposure	Granite	PIKES PEAK GRANITE	Lamont (Columbia University)	"Marvin, R.F."	75 11	Accurate to within 30 minutes (~30 miles)	PIKES PEAK TOLL ROAD	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
938	-105.575000	38.416667	105	34	30	W	38	25	0	N	US	CO	Fremont	62500	Cotopaxi	Outcrop or artificial surface exposure	Gneiss	BIOTITE GNEISS	Lamont (Columbia University)	"Marvin, R.F."	75 11	Accurate to within 5 minute (~5 miles)	"ARKANSAS CANYON, WEST OF CANYON CITY"	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
939	-105.416667	38.483333	105	25	0	W	38	29	0	N	US	CO	Fremont	62500	Royal Gorge	Outcrop or artificial surface exposure	Granite	BIOTITE GRANITE	Lamont (Columbia University)	"Marvin, R.F."	75 11	Accurate to within 5 minute (~5 miles)	EAST END OF ARKANSAS CANYON	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
940	-105.333333	38.466667	105	20	0	W	38	28	0	N	US	CO	Fremont	62500	Royal Gorge	Outcrop or artificial surface exposure	Granite		Lamont (Columbia University)	"Marvin, R.F."	75 11	Accurate to within 5 minute (~5 miles)	"ROYAL GORGE, WEST OF CANYON CITY"	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
941	-107.708333	38.583333	107	42	30	W	38	35	0	N	US	CO	Montrose	24000	Grizzly Ridge	Outcrop or artificial surface exposure	Gneiss	BIOTITE GNEISS	Lamont (Columbia University)	"Marvin, R.F."	75 11	Accurate to within 5 minute (~5 miles)	BLACK CANYON NATIONAL MONUMENT	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
942	-107.416667	38.466667	107	25	0	W	38	28	0	N	US	CO	Gunnison(?)	250000	Montrose 	Outcrop or artificial surface exposure	Gneiss	BIOTITE GNEISS	Lamont (Columbia University)	"Marvin, R.F."	75 11	Accurate to within 30 minutes (~30 miles)	BETWEEN CIMARRON AND SAPINERO	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
943	-106.329167	38.495833	106	19	45	W	38	29	45	N	US	CO	Gunnison(?) or Chaffee(?)	24000	Pahlone Peak	Outcrop or artificial surface exposure	Gneiss	BIOTITE GNEISS	Lamont (Columbia University)	"Marvin, R.F."	75 11	Accurate to within 5 minute (~5 miles)	MONARCH PASS	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
944	-107.991667	38.900000	107	59	30	W	38	54	0	N	US	CO	Chaffee	24000	Antero Reservoir	Outcrop or artificial surface exposure	Granite		Lamont (Columbia University)	"Marvin, R.F."	75 11	Accurate to within 5 minute (~5 miles)	TROUT CREEK PASS	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
945	-105.250000	39.750000	105	15	0	W	39	45	0	N	US	CO	Jefferson	250000	Denver	Outcrop or artificial surface exposure	Gneiss	BIOTITE GNEISS	Lamont (Columbia University)	"Madden, C.T."	75 06	Accurate to within 5 minute (~5 miles)	WEST OF GOLDEN	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
946	-105.250000	39.758333	105	15	0	W	39	45	30	N	US	CO	Jefferson	250000	Denver	Outcrop or artificial surface exposure	Pegmatite	BIOTITE PEGMATITE	Lamont (Columbia University)	"Marvin, R.F."	75 06	Accurate to within 5 minute (~5 miles)	WEST OF GOLDEN	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
947	-105.258333	39.750000	105	15	30	W	39	45	0	N	US	CO	Jefferson	250000	Denver	Outcrop or artificial surface exposure	Gneiss(?)	SHEARED (GNEISS?) ZONE	Lamont (Columbia University)	"Madden, C.T."	75 06	Accurate to within 5 minute (~5 miles)	WEST OF GOLDEN	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
948	-105.733333	39.700000	105	44	0	W	39	42	0	N	US	CO	Clear Creek	24000	Georgetown	Outcrop or artificial surface exposure	Granite	SILVER PLUME GRANITE	Lamont (Columbia University)	"Madden, C.T."	75 06	Accurate to within 1 minute (~1 mile)	SILVER PLUME	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
949	-105.729167	39.700000	105	43	45	W	39	42	0	N	US	CO	Clear Creek	24000	Georgetown	Outcrop or artificial surface exposure	Granite	DIKE OF SILVER PLUME GRANITE.	Lamont (Columbia University)	"Madden, C.T."	75 06	Accurate to within 5 minute (~5 miles)	NEAR SILVER PLUME	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
950	-105.866667	39.666667	105	52	0	W	39	40	0	N	US	CO	Clear Creek(?) or Summit(?)	62500	Montezuma	Outcrop or artificial surface exposure	Gneiss	BIOTITE GNEISS	Lamont (Columbia University)	"Marvin, R.F."	75 11	Accurate to within 5 minute (~5 miles)	LOVELAND PASS	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
951	-105.500000	39.916667	105	30	0	W	39	55	0	N	US	CO	Gilpin	24000	Tungsten	Outcrop or artificial surface exposure	Gneiss	BIOTITE GNEISS	Lamont (Columbia University)	"Marvin, R.F."	75 11	Accurate to within 5 minute (~5 miles)	ROLLINSVILLE	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
952	-105.483333	39.916667	105	29	0	W	39	55	0	N	US	CO	Gilpin	24000	Tungsten	Outcrop or artificial surface exposure	Pegmatite	BIOTITE PEGMATITE	Lamont (Columbia University)	"Marvin, R.F."	75 11	Accurate to within 5 minute (~5 miles)	ROLLINSVILLE	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
953	-105.800000	39.950000	105	48	0	W	39	57	0	N	US	CO	Grand	24000	Fraser	Outcrop or artificial surface exposure	Gneiss	BIOTITE GNEISS	Lamont (Columbia University)	"Marvin, R.F."	75 11	Accurate to within 5 minute (~5 miles)	FRASER	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
954	-106.291667	40.883333	106	17	30	W	40	53	0	N	US	CO	Jackson	24000	Northgate	Outcrop or artificial surface exposure	Granite		Lamont (Columbia University)	"Marvin, R.F."	75 11	Accurate to within 5 minute (~5 miles)	NEAR NORTHGATE	"Giffin, C.E., and Kulp, J.L., 1960, Potassium-argon ages in the Precambrian basement of Colorado:  Geological Society of America Bulletin, v. 71, p. 219-222"	
955	-121.768333	39.195000	121	46	6	W	39	11	42	N	US	CA	Sutter	24000	Sutter Buttes	Quarry	Rhyolite	RHYOLITE PLUG INTRUDING SUTTER FORMATION	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 0.1 minute (~500 feet)	"DE WITT QUARRY, CENTER OF SEC. 32, T16N, R2E (MDM), SUTTER BUTTES"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
956	-121.788889	39.266667	121	47	20	W	39	16	0	N	US	CA	Sutter	24000	Pennington	Outcrop or artificial surface exposure	Andesite	ANDESITE FLOW ON SUTTER FORMATION	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"NEAR CENTER OF SEC.  6, T16N, R2E, SUTTER BUTTES"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
957	-115.166667	38.950000	115	10	0	W	38	57	0	N	US	NV	White Pine	250000	Lund	Outcrop or artificial surface exposure	Tuff	WELDED TUFF	"University of California, Berkeley"	"Madden, C.T."	75 03	Accurate to within 5 minute (~5 miles)	"WINDOWS BUTTE, SOUTHWEST OF ELY; SW1/4 SEC. 31, T31N, R61E (LOCATION INFORMATION SUPPLIED BY J.H. SCHILLING)"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
958	-119.233333	34.758333	119	14	0	W	34	45	30	N	US	CA	Ventura	24000	Sawmill Mountain	Outcrop or artificial surface exposure	Tuff(?)	TUFF(?) IN GRAY-BED LITHOFACIES OF UPPER PART OF CALIENTE FORMATION	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 5 minute (~5 miles)	"DRY CANYON, UPPER CUYAMA VALLEY"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
959	-114.916667	38.766667	114	55	0	W	38	46	0	N	US	NV	White Pine	24000	Brown Knoll	Outcrop or artificial surface exposure	Tuff	"SUMMIT TUFF UNIT OF SHEEP PASS SECTION, 375 FEET ABOVE THE BASE OF TERTIARY VOLCANIC SEQUENCE..  EVERNDEN AND OTHERS (1961) REPORT THIS SAMPLE AS BIOTITE RHYOLYITC TUFF (WELDED)"	"University of California, Berkeley"	"Madden, C.T."	75 03	Accurate to within 1 minute (~1 mile)	"SEC. 32, T11N, R63E ; EVERNDEN AND OTHERS (1961) REPORT THIS SAMPLE NEAR SUMMIT AT SHEEP PASS, EGAN RANGE"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
960	-118.416667	37.416667	118	25	0	W	37	25	0	N	US	CA	Inyo	62500	Bishop	Outcrop or artificial surface exposure	Tuff	BISHOP TUFF LYING ON GLACIAL TILL	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 30 minutes (~30 miles)	NEAR BISH0P	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
961	-118.900000	38.495833	118	54	0	W	38	29	45	N	US	NV	Mineral	62500	Aurora	Outcrop or artificial surface exposure	Tuff	BIOTITE RHYOLITE TUFF NEAR TOP OF UNIT A-6 OF ALDRICH STATION FORMATION (EARLY CLARENDONIAN).  EVERNDEN AND OTHERS (1961) REPORT % RADIOGENIC AR-40=40% AND AN AGE OF 12.0+/-0.4 M.Y. BUT USED DECAY CONSTANT OF 0.584 E-10/YR	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"APPROXIMATELY 2000 FEET WEST OF ALDRICH STATION, COAL VALLEY; EVERNDEN AND OTHERS (1961) REPORT THIS SAMPLE IN SEC. 6, T7N, R28E (LAT. AND LONG. VALUES SUPPLIED BY J.H. SCHILLING, NEVADA BUREAU OF MINES AND GEOLOGY)"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
962	-117.066667	35.041667	117	4	0	W	35	2	30	N	US	CA	San Bernardino	62500	Opal Mountain	Outcrop or artificial surface exposure	Tuff	WELDED TUFF NEAR THE MIDDLE (ACTUALLY UPPER THIRD-COMPILER) OF BARSTOW FORMATION (BARSTOVIAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 5 minute (~5 miles)	"BARSTOW SYNCLINE, NORTH OF BARSTOW"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
963	-118.900000	36.313889	118	54	0	W	36	18	50	N	US	CA	Inyo	62500	Keeler	Outcrop or artificial surface exposure	Pumice	PUMICE CHUNKS IN COSO FORMATION	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"SEC. 6, T19S, R38E, COSO RANGE"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
964	-117.925000	35.416667	117	55	30	W	35	25	0	N	US	CA	Kern	62500	Saltdale	Outcrop or artificial surface exposure	Tuff	TUFF IS ABOUT 2000 FEET ABOVE BASE OF RICARDO FORMATION--NEAR TOP OF MEMBER 4 (LATE EARLY CLARENDONIAN OR EARLY LATE CLARENDONIAN).	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 5 minute (~5 miles)	LAST CHANCE GULCH	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
965	-118.283333	35.100000	118	17	0	W	35	6	0	N	US	CA	Kern	24000	Monolith	Outcrop or artificial surface exposure	Tuff	HORNBLENDE BIOTITE TUFF IN THE KINNICK FORMATION BELOW PHILLIPS RANCH MAMMALS AND TEHACHAPI PLANTS (LATE HEMINGFORDIAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 30 minutes (~30 miles)	"PHILLIPS RANCH, TEHACHAPI PASS, TEHACHAPI MOUNTAINS"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
966	-118.072222	37.933333	118	4	20	W	37	56	0	N	US	NV	Esmeralda	125000	White Mountain	Outcrop or artificial surface exposure	Tuff	BIOTITE CRYSTAL VITRIC TUFF IN ESMERALDA FORMATION (EARLY CLARENDONIAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"3/4 MILE SOUTH OF HILL 6061, FISH LAKE VALLEY , T1N, R35E"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
967	-103.750000	42.416667	103	45	0	W	42	25	0	N	US	NE	Sioux	250000	Alliance	Outcrop or artificial surface exposure	Tuff	GRAY VITRIC TUFF WITH MINUTE BIOTITE CRYSTALS IN LOWER HARRISON FORMATION (LATE ARIKAREEAN)	"University of California, Berkeley"	"Madden, C.T."	75 03	Accurate to within 30 minutes (~30 miles)	COOK RANCH	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
968	-118.918056	38.483333	118	55	5	W	38	29	0	N	US	NV	Lyon	62500	Aurora	Outcrop or artificial surface exposure	Tuff	"TUFF NEAR TOP OF UNIT A6, ALDRICH STATION FORMATION"	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	COAL VALLEY	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
969	-104.633333	30.141667	104	38	0	W	30	8	30	N	US	TX	Presidio	250000	Marfa	Outcrop or artificial surface exposure	Extrusive(?)	VIEJA GROUP (CHADRONIAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 5 minute (~5 miles)	FOUR MILES EAST OF RIO GRANDE (EAST OF CANDELARIA -COMPILER)	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
970	-119.250000	38.800000	119	15	0	W	38	48	0	N	US	NV	Lyon	62500	Wellington	Outcrop or artificial surface exposure	Tuff	"CRYSTAL VITRIC BIOTITE DACITE TUFF, SMITH VALLEY ""BEDS"", MORGAN RANCH FORMATION (HEMPHILLIAN)"	"University of California, Berkeley"	"Madden, C.T."	75 03	Accurate to within 5 minute (~5 miles)	EASTERN EDGE OF SMITH VALLEY	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
971	-120.270278	44.648333	120	16	13	W	44	38	54	N	US	OR	Wheeler	24000	Painted Hills	Outcrop or artificial surface exposure	Tuff	"TUFF IN EIGHT FOOT SEQUENCE OF INTERBEDDED TUFFS, 165 FEET ABOVE BASE OF JOHN DAY FORMATION"	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"NW1/4 NE1/4 SEC. 1, T11S, R20E"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
972	-121.825000	39.208333	121	49	30	W	39	12	30	N	US	CA	Sutter	24000	Sutter Buttes	Outcrop or artificial surface exposure	Intrusive rock	SUTTERS FORMATION INTRUDED BY ROCK OF PROBABLE LATE(?) BLANCAN AGE	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"CENTER OF SEC. 30, T16W, R2E, SUTTER BUTTES"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
973	-118.072222	37.933333	118	4	20	W	37	56	0	N	US	NV	Esmeralda	125000	White Mountain	Outcrop or artificial surface exposure	Tuff	BIOTITE CRYSTAL VITRIC TUFF IN ESMERALDA FORMATION (EARLY CLARENDONIAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"3/4 MILE SOUTH OF HILL 6061, FISH LAKE VALLEY"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
974	-118.918056	38.483333	118	55	5	W	38	29	0	N	US	NV	Lyon	62500	Aurora	Outcrop or artificial surface exposure	Tuff	"BIOTITE CRYSTAL VITRIC TUFF, ALDRICH STATION FORMATION, TOP OF UNIT A6 (EARLY CLARENDONIAN)"	"University of California, Berkeley"	"Madden, C.T."	75 03	Accurate to within 1 minute (~1 mile)	COAL VALLEY	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
975	-118.918056	38.483333	118	55	5	W	38	29	0	N	US	NV	Lyon	62500	Aurora	Outcrop or artificial surface exposure	Tuff	BIOTITE CRYSTAL VITRIC TUFF APPROXIMATELY 200 FEET ABOVE BASE OF UNIT 1 OF COAL VALLEY FORMATION (EARLY CLARENDONIAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	COAL VALLEY	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
976	-118.918056	38.483333	118	55	5	W	38	29	0	N	US	NV	Lyon	62500	Aurora	Outcrop or artificial surface exposure	Tuff	BIOTITE TUFF IN UNIT A6 OF ALDRICH STATION FORMATION (EARLY CLARENDONIAN)	"University of California, Berkeley"	"Madden, C.T."	75 03	Accurate to within 1 minute (~1 mile)	COAL VALLEY	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
977	-122.227500	37.880833	122	13	39	W	37	52	51	N	US	CA	Alameda	24000	Briones Valley	Outcrop or artificial surface exposure	Rhyolite(?)	RHYOLITE (?) INTRUDES GRIZZLY PEAK VOLCANICS INTERBEDDED BETWEEN THE ORINDA AND SIESTA FORMATIONS (CLARENDONIAN IN AGE)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"LITTLE GRIZZLY PEAK, BERKELEY HILLS"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
978	-117.700000	38.366667	117	42	0	W	38	22	0	N	US	NV	Esmeralda	250000	Tonopah	Outcrop or artificial surface exposure	Tuff(?)	ESMERALDA FORMATION (EARLY CLARENDONIAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 30 minutes (~30 miles)	"APPROXIMATELY ONE MILE NW OF ""TEDFORD POCKET"", CEDAR MOUNTAIN AREA"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
979	-121.945833	40.532222	121	56	45	W	40	31	56	N	US	CA	Shasta	62500	Whitmore	Outcrop or artificial surface exposure	Tuff	TUFF NEAR BASE OF TEHAMA FORMATION AT APPROXIMATELY LEVEL OF TEHAMA FAUNA (LATE? BLANCAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"SEC. 23, T31N, R1W, BEAR CREEK FALLS"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
980	-120.290278	44.569444	120	17	25	W	44	34	10	N	US	OR	Wheeler	24000	Lawson Mountain	Outcrop or artificial surface exposure	Claystone	CLAYSTONE (WHITNEYAN-ORELLAN AGE) ABOUT 75 FEET ABOVE BASE OF JOHN DAY FORMATION.  ADULARIA IS PSEUDOMORPHIC AFTER PLAGIOCLASE; RESULT OF POST-DEPOSITIONAL ALTERATION OF A VITRIC ASH	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"NORTHEAST CORNER SE1/4, SE1/4, SEC. 35, T11S, R20E"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
981	-120.265278	44.698333	120	15	55	W	44	41	54	N	US	OR	Wheeler	24000	Painted Hills	Outcrop or artificial surface exposure	Tuff	WIDESPREAD TUFF BED 835 FEET ABOVE BASE OF JOHN DAY FORMATION IN MEASURED SECTION; FROM MERRIAM'S MIDDLE MEMBER (EARLY ARIKAREEAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"NE1/4, SE1/4, SEC. 13, T10S, R20E"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
982	-120.207222	44.578056	120	12	26	W	44	34	41	N	US	OR	Wheeler	62500	Mitchell	Outcrop or artificial surface exposure	Obsidian	OBSIDIAN IS 1100 TO 1135 FEET ABOVE BASE OF JOHN DAY FM.  ONE INCH LAPILLI FROM WIDESPREAD IGNIMBRITE UNIT COMMONLY USED TO SEPARATE THE MIDDLE AND UPPER MEMBERS OF JOHN DAY FM.	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"SW1/4, SEC. 31, T10S, R21E"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
983	-120.203333	44.674444	120	12	12	W	44	40	28	N	US	OR	Wheeler	62500	Mitchell	Outcrop or artificial surface exposure	Tuff(?)	TUFF (?) APPROXIMATELY 1550 FEET ABOVE BASE OF JOHN DAY FORMATION (ARIKAREEAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"SW CORNER OF SEC. 29, T10S, R21E"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
984	-122.191389	37.850278	122	11	29	W	37	51	1	N	US	CA	Contra Costa	24000	Oakland East 	Outcrop or artificial surface exposure	Basalt	"PORPHYRITIC, GLASSY TO HYALOPILITIC BASALT COMPOSED OF 60% GROUNDMASS, 34% PLAGIOCLASE, 3% PYROXENE, AND 3% OTHERS.  OLIVINE MOSTLY CONVERTED TO MAGNETITE WITH SOME ANTIGORITE (CLARENDONIAN)"	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"JUST EAST OF FIRE LOOKOUT ON ROUND TOP PEAK, BERKELEY HILLS"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
985	-122.194444	37.868333	122	11	40	W	37	52	6	N	US	CA	Contra Costa	24000	Oakland East 	Outcrop or artificial surface exposure	Basalt	"PORPHYRITIC INTERGRANULAR BASALT COMPOSED OF PLAGIOCLASE AND PYROXENE PHENOCRYSTS IN A GROUNDMASS OF PLAGIOCLASE, PYROXENE, OLIVINE, MINOR BROWN GLASS, ORE, AND APATITE.  BASALT IS IN GRIZZLY PEAK VOLCANICS 400 FEET ABOVE RHYOLITE MARKER (CLARENDONIAN)"	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"AT SPRING ALONG ORINDA-OAKLAND FREEWAY, BELOW HILL 1278, BERKELEY HILLS"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
986	-120.202778	44.563056	120	12	10	W	44	33	47	N	US	OR	Wheeler	62500	Mitchell	Outcrop or artificial surface exposure	Andesite	"(GLOMERO)PORPHYRITIC INTERGRANULAR PYROXENE ANDESITE COMPOSED OF SPARSE GLOMEROPORPHS OF AUGITE AND MAGNETITE IN GROUNDMASS OF PLAGIOCLASE, CLINOPYROXENE, MINOR CHLORITE, MAGNETITE, AND APATITE.  ANDESITE IS PART OF A 100 FOOT LAVA FLOW ABOUT 100 FEET ABO"	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"NEAR CENTER OF SW1/4, SEC. 8, T11S, R21E"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
987	-111.680556	40.997222	111	40	50	W	40	59	50	N	US	UT	Morgan	24000	Porterville	Outcrop or artificial surface exposure	Tuff	SANIDINE-BIOTITE RHYOLITIC WELDED TUFF IN NORWOOD TUFF (DUCHESNEAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"ON UTAH ROUTE U-66, ONE MILE NORTH OF PORTERVILLE AND 2.4 MILES SOUTH OF NORTH EDGE OF T3N, R2E"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
988	-114.898611	43.113889	114	53	55	W	43	6	50	N	US	ID	Gooding	62500	Davis Mountain	Outcrop or artificial surface exposure	Ash	ASH BED IN THICK ACCUMULATION OF HOLE-IN-THE-WALL DIATOMITE (HEMPHILLIAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 0.1 minute (~500 feet)	"400 FEET NORTH AND 1200 FEET WEST OF SE CORNER OF SEC. 34, T3S, R13E; STROUD CLAIM, NEAR HAGERMAN"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
989	-114.940278	42.823889	114	56	25	W	42	49	26	N	US	ID	Twin Falls	24000	Hagerman	Outcrop or artificial surface exposure	Ash	ASH BED IN GLENNS FERRY FORMATION (BLANCAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 0.1 minute (~500 feet)	"4300 FEET NORTH AND 3400 FEET WEST OF SE CORNER OF SEC. 16, T7S, R13E, NEAR HAGERMAN"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
990	-115.029167	42.900556	115	1	45	W	42	54	2	N	US	ID	Twin Falls	62500	Pasadena Valley	Outcrop or artificial surface exposure	Ash	ASH BED IN GLENNS FERRY FORMATION (BLANCAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 0.1 minute (~500 feet)	"2600 FEET NORTH AND 350 FEET WEST OF SE CORNER OF SEC. 16, T6S, R12E"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
991	-120.193333	44.694167	120	11	36	W	44	41	39	N	US	OR	Wheeler	62500	Mitchell	Outcrop or artificial surface exposure	Basalt	"FINE-GRAINED TRACHYBASALT IN JOHN DAY FM.  ROCK IS COMPOSED OF PLAGIOCLASE, TITANAUGITE, 10% CHLORITE, 5% ILMENITE, 1% BIOTITE; OLIVINE MOSTLY ALTERED TO CHLORITE OR SERPENTINE MINERALS"	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"NEAR NW CORNER OF SEC. 9, T10S, R21E"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
992	-103.916667	42.083333	103	55	0	W	42	5	0	N	US	NE	Sioux	250000	Alliance	Outcrop or artificial surface exposure	Tuff	GRAY VITRIC TUFF (4 FEET THICK) AT TOP OF SHEEP CREEK FORMATION (LATE BARSTOVIAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 30 minutes (~30 miles)	VANCE JOHNSON RANCH	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
993	-105.162500	39.752778	105	9	45	W	39	45	10	N	US	CO	Jefferson	24000	Golden	Outcrop or artificial surface exposure	Basalt	"DENVER FM.  PORPHYRITIC BASALT COMPOSED OF PLAGIOCLASE AND AUGITE PHENOCRYSTS IN A GROUNDMASS OF PLAGIOCLASE, PYROXENE, AND MINOR APATITE AND BIOTITE.  OLIVINE, IF PRESENT, IS NOW SERPENTINE MINERALS; DEUTERIC CHLORITE MAKES UP 5-10% OF ROCK"	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"SW1/4, NW1/4, SEC. 31, T3S, R9W, SOUTH TABLE MOUNTAIN"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
994	-103.233333	41.608333	103	14	0	W	41	36	30	N	US	NE	Morrill	250000	Scottsbluff	Outcrop or artificial surface exposure	Ash	A LIGHT SILVERY GRAY ASH IN LOWER PART OF A GERING CHANNEL	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"NORTHWEST SIDE OF ROUND HOUSE ROCK; SW1/4, SEC. 21, T19N, R15W (SHOULD BE R51W--COMPILER)"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
995	-103.350000	41.708333	103	21	0	W	41	42	30	N	US	NE	Morrill	24000	South Bayard	Outcrop or artificial surface exposure	Ash	ASH FROM GERING FORMATION (EARLIEST ARIKAREEAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"1/8 MILE DUE SOUTH OF CHIMNEY ROCK ON THE MAIN BUTTE IN SW CORNER OF SEC. 17, T20N, R52W"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
996	-103.712500	41.840278	103	42	45	W	41	50	25	N	US	NE	Scotts Bluff	24000	Scottsbluff South	Outcrop or artificial surface exposure	Ash	"BLACK ASH 11 FEET ABOVE BASE OF GERING FORMATION AT TYPE LOCALITY (OSBORN, 1918) - (EARLIEST ARIKAREEAN)"	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"NORTH FACE OF SCOTTS BLUFF NATIONAL MONUMENT IN NE1/4 NE1/4 SEC. 23 (SEC. 33--COMPILER), T22N, R55W"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
997	-105.162500	39.752778	105	9	45	W	39	45	10	N	US	CO	Jefferson	24000	Golden	Outcrop or artificial surface exposure	Dacite	COBBLES OF SOFT DACITIC PUMICE IN THE DENVER FORMATION	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"SW1/4, NW1/4, SEC. 31, T3S, R69W, SOUTH TABLE MOUNTAIN"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
998	-122.203056	37.868611	122	12	11	W	37	52	7	N	US	CA	Contra Costa	24000	Oakland East 	Outcrop or artificial surface exposure	Tuff	CRYSTAL VITRIC TUFF IN BASAL BEDS OF SIESTA FORMATION (LATE CLARENDONIAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"NORTH SIDE OF HIGHWAY, 200 FEET WEST OF DIRT ROAD LEADING INTO SIESTA VALLEY IN SEC. 4, T1S, R4W (R3W--COMPILER)"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
999	-122.205833	37.866389	122	12	21	W	37	51	59	N	US	CA	Contra Costa	24000	Oakland East 	Outcrop or artificial surface exposure	Basalt	"GRIZZLY PEAK VOLCANICS.  BASALT IS FROM THE BASE OF VOLCANIC SEQUENCE (260 FEET BELOW RHYOLITE MARKER BED); PORPHYRITIC BASALT WITH OLIVINE PHENOCRYSTS COMPLETELY ALTERED TO IDDINGSITE AND SERPENTINE; GROUNDMASS COMPOSED OF PLAGIOCLASE, CLINOPYROXENE, MIN"	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"NORTH SIDE OF ORINDA-OAKLAND FREEWAY (JUST ABOVE GRIZZLY PEAK-ORINDA CONTACT), BERKELEY HILLS"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1000	-104.541667	30.275000	104	32	30	W	30	16	30	N	US	TX	Presidio	250000	Marfa	Outcrop or artificial surface exposure	Tuff	"WELDED TUFF IN TYPE SECTION OF BRITE IGNIMBRITE, VIEJA GROUP"	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"SOUTH SLOPE OF CAPOTE MOUNTAIN, RIM ROCK COUNTRY"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1001	-122.215556	37.861389	122	12	56	W	37	51	41	N	US	CA	Alameda	24000	Oakland East 	Outcrop or artificial surface exposure	Basalt	"GRIZZLY PEAK VOLCANICS.  PILOTAXITIC OLIVINE BASALT COMPOSED OF PLAGIOCLASE, CLINOPYROXENE, ORE, CHLORITE (LESS THAN 5%), AND SPARSE IDDINGSITE (OLIVINE PSEUDOMORPHS)"	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 5 minute (~5 miles)	"ON GRIZZLY PEAK BOULEVARD, BERKELEY HILLS"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1002	-122.208333	37.875000	122	12	30	W	37	52	30	N	US	CA	Contra Costa	24000	Briones Valley	Outcrop or artificial surface exposure	Basalt	"BALD PEAK BASALT.  PORPHYRITIC OLIVINE BASALT CONTAINING PARTLY REMELTED PLAGIOCLASE PHENOCRYSTS PLUS PARTLY CHLORITIZED PYROXENE AND OLIVINE; GROUNDMASS COMPOSED OF PLAGIOCLASE, PYROXENE, OCCASIONAL OLIVINE, ORE, PATCHES OF CHLORITE, BROWN GLASS, AND APA"	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"BALD PEAK (VOLLMER PEAK ON NEW MAP--COMPILER), BERKELEY HILLS"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1003	-122.300556	38.010278	122	18	2	W	38	0	37	N	US	CA	Contra Costa	24000	Mare Island	Outcrop or artificial surface exposure	Tuff	"PINOLE TUFF, PINOLE FORMATION (LATE HEMPHILLIAN)"	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"6000 FEET WEST OF PINOLE JUNCTION, PINOLE"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1004	-104.741667	30.466667	104	44	30	W	30	28	0	N	US	TX	Presidio	250000	Marfa	Outcrop or artificial surface exposure	Tuff	"WELDED TUFF OF BRACKS RHYOLITE, BRACKS FORMATION, VEIJA SERIES (EARLY CHADRONIAN)"	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 5 minute (~5 miles)	"BRACKS CANYON NEAR ABANDONED TOWN OF SAN CARLOS, NEAR FOOT OF GETTYSBURG PEAK"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1005	-119.616667	41.666667	119	37	0	W	41	40	0	N	US	NV	Washoe	24000	Massacre Lake	Outcrop or artificial surface exposure	Pumice		"University of California, Berkeley"	"Madden, C.T."	75 03	Accurate to within 5 minute (~5 miles)	"MASSACRE LAKE, EAST SIDE OF LONG VALLEY"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1006	-117.906389	36.183889	117	54	23	W	36	11	2	N	US	CA	Inyo	62500	Haiwee Reservoir	Outcrop or artificial surface exposure	Andesite	ANDESITE FROM COSO FORMATIION (PROBABLY LATE BLANCAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"NW1/4, SEC. 24, T20S, R37 1/2E, SOUTHERN COSO RANGE"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1007	-110.041667	35.583333	110	2	30	W	35	35	0	N	US	AZ	Hopi	62500	White Cone	Outcrop or artificial surface exposure	Basalt	"BIDAHOCHI FORMATION.  HYALOPILITIC AND VESICULAR PORPHYRITIC BASALT CONTAINING AUGITE PHENOCRYSTS IN GROUNDMASS COMPOSED OF PLAGIOCLASE, PYROXENE, MAGNETITE, AND DARK BROWN GLASS (30% OF ROCK).  LATE HEMPHILLIAN OR EARLY BLANCAN"	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"SW1/4, NE1/4, SEC. 12, T25N, R21E, NORTH OF WHITE CONE PEAK"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1008	-117.766667	43.550000	117	46	0	W	43	33	0	N	US	OR	Malheur	250000	Boise	Outcrop or artificial surface exposure	Tuff	TUFF FROM SAME UNIT AS ORIGINAL SKULL SPRINGS FAUNA OF GAZIN	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 5 minute (~5 miles)	"T23S, R40E, RED RIDGE BASIN"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1009	-118.583333	42.533333	118	35	0	W	42	32	0	N	US	OR	Harney	250000	Adel	Outcrop or artificial surface exposure	Basalt	"STEENS BASALT (BARSTOVIAN).  BASALT COMPOSED OF PLAGIOCLASE (30% OF ROCK) IN GROUNDMASS OF PLAGIOCLASE (70% OF GROUNDMASS), PYROXENE, OLIVINE, AND OPAQUES"	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 30 minutes (~30 miles)	STEENS MOUNTAIN	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1010	-115.129722	42.892222	115	7	47	W	42	53	32	N	US	ID	Elmore	62500	Pasadena Valley	Outcrop or artificial surface exposure	Basalt	GLENNS FERRY FORMATION (BLANCAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 0.1 minute (~500 feet)	"4600 FEET NORTH AND 900 FEET WEST OF SE CORNER OF SEC. 22, T6S, R11E"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1011	-115.243056	43.039722	115	14	35	W	43	2	23	N	US	ID	Elmore	62500	King Hill	Outcrop or artificial surface exposure	Basalt	BASALT FROM YOUNGEST FLOW OF BRUNEAU BASALTS (IRVINGTONIAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"3500 FEET NORTH AND 4100 FEET WEST OF SE CORNER OF SEC. 29 (NOT SEC. 27, AS PUBLISHED--COMPILER), T4S, R11E (ERRONEOUSLY PLACED IN BENNETT MOUNTAIN QUAD.--COMPILER)"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1012	-119.333333	44.433333	119	20	0	W	44	26	0	N	US	OR	Grant	62500	Aldrich Mountain	Outcrop or artificial surface exposure	Basalt	"BASALT COMPOSED OF 50% SLIGHTLY ALTERED PLAGIOCLASE, 33% PYROXENE, AND 17% OPAQUES.  COLUMBIA RIVER BASALTS (HEMINGFORDIAN - BARSTOVIAN)"	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"HIGHWAY 28 ROADCUT, 1.4 MILES EAST OF UCMP FOSSIL LOCATION P4129, 13 MILES EAST OF DAYVILLE"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1013	-119.408333	44.441667	119	24	30	W	44	26	30	N	US	OR	Grant	62500	Aldrich Mountain	Outcrop or artificial surface exposure	Rhyolite	RHYOLITE FROM RATTLESNAKE FORMATION (HEMPHILLIAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"NORTHSIDE OF HIGHWAY 28 ROADCUT, 2.4 MILES WEST OF UCMP FOSSIL LOCATION P4129, 10.6 MILES EAST OF DAYVILLE"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1014	-118.278889	43.783889	118	16	44	W	43	47	2	N	US	OR	Harney	62500	Drewsey	Outcrop or artificial surface exposure	Tuff	WELDED TUFF MEMBER AT BASE OF DREWSEY FORMATION CONTAINING DRINKWATER LOCAL FAUNA OF HEMPHILLIAN AGE	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"SUMMIT OF DRINKWATER PASS, OWYHEE PLATEAU (MISTAKENLY PLACED IN MALHEUR COUNTY--COMPILER"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1015	-118.583333	42.533333	118	35	0	W	42	32	0	N	US	OR	Harney	250000	Adel	Outcrop or artificial surface exposure	Basalt	STEENS BASALT (BARSTOVIAN)	"University of California, Berkeley"	"Madden, C.T."	75 03	Accurate to within 30 minutes (~30 miles)	STEENS MOUNTAIN	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1016	-120.733333	41.441667	120	44	0	W	41	26	30	N	US	CA	Modoc	62500	Alturas	Outcrop or artificial surface exposure	Tuff	LEAF-BEARING TUFF AT BASE OF ALTURAS FORMATION (HEMPHILLIAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	RATTLESNAKE BUTTE NEAR ALTURAS	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1017	-103.508333	29.138889	103	30	30	W	29	8	20	N	US	TX	Brewster	24000	Castolon	Outcrop or artificial surface exposure	Basalt	ALAMO CREEK BASALT MEMBER OF THE CHISOS VOLCANIC FORMATION (PROBABLY UINTAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 0.1 minute (~500 feet)	"BLUE CREEK BOTTOM, ABOUT 150 YARDS FROM EAST END OF CASTOLON AIRSTRIP, BIG BEND NATIONAL PARK"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1018	-116.233333	35.483333	116	14	0	W	35	29	0	N	US	CA	San Bernardino	62500	Baker	Outcrop or artificial surface exposure	Tuff	TUFF APPROXIMATELY 200 FEET STRATIGRAPHICALLY BELOW FOSSIL MAMMAL-BEARING GRAY PUNKY TUFF AND SANDSTONE BEDS OF AVAWATZ FORMATION (CLARENDONIAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 5 minute (~5 miles)	"SOUTHEASTERN FLANK OF AVAWATZ MOUNTAIN, APPROXIMATELY 10 MILES NORTHEAST OF SILVER LAKE"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1019	-116.233333	35.483333	116	14	0	W	35	29	0	N	US	CA	San Bernardino	62500	Baker	Outcrop or artificial surface exposure	Tuff	TUFF APPROXIMATELY 200 FEET STRATIGRAPHICALLY BELOW FOSSIL MAMMAL-BEARING GRAY PUNKY TUFF AND SANDSTONE BEDS OF AVAWATZ FORMATION (CLARENDONIAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 5 minute (~5 miles)	"SOUTHEASTERN FLANK OF AVAWATZ MOUNTAIN, APPROXIMATELY 10 MILES NORTHEAST OF SILVER LAKE"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1020	-121.441944	38.904444	121	26	31	W	38	54	16	N	US	CA	Placer	24000	Sheridan	Outcrop or artificial surface exposure	Tuff	BIOTITE PUMICE LAPILLI FROM TUFFACEOUS SANDSTONE (LATEST BARSTOVIAN-EARLIEST CLARENDONIAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"NEAR CENTER OF SEC. 8, T12N, R5E, WESTERN CRONESE BASIN"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1021	-115.779167	41.720833	115	46	45	W	41	43	15	N	US	NV	Elko	62500	Wild Horse	Outcrop or artificial surface exposure	Rhyolite	"BASAL PHASE OF JARBIDGE RHYOLITE, STRATIGRAPHICALLY ABOVE UNDESCRIBED BARSTOVIAN MAMMAL ASSEMBLAGE (RIZZI RANCH FAUNA)"	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"WILD HORSE QUADRANGLE GRID COORDINATES ARE 2,524,900N; 445,400E (LOCATION LISTED BY MCKEE AND OTHERS, 1976, AS 41-41-01 N, 115-47-00 W, 1/4 MILE NORTH OF WILDHORSE, SEC. T45N, R55E--COMPILER)"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1022	-117.700000	38.383333	117	42	0	W	38	23	0	N	US	NV	Esmeralda	250000	Tonopah	Outcrop or artificial surface exposure	Tuff	BIOTITE CRYSTAL VITRIC TUFF (ESMERALDA FORMATION) 200 FEET ABOVE FOSSIL MAMMAL-BEARING BEDS OF EARLY CLARENDONIAN AGE	"University of California, Berkeley"	"Marvin, R.F."	75 11	Accurate to within 30 minutes (~30 miles)	"CEDAR MOUNTAIN AREA , ABOUT 1 MILE NORTH OF ""TEDFORD POCKET"""	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1023	-120.287778	44.636111	120	17	16	W	44	38	10	N	US	OR	Wheeler	24000	Painted Hills	Outcrop or artificial surface exposure	Claystone	CRYSTAL-RICH BENTONITIC CLAYSTONE IN CLARNO FORMATION  (EARLY CHADRONIAN OR LATE DUCHESNEAN)	"University of California, Berkeley"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"NEAR SE CORNER OF SEC. 2, T11S, R20E"	"Evernden, J.F., Curtis, G.H., Savage, D.E., and James, G.T., 1964, K-Ar dates and the Cenozoic mammalian chronology of North America:  American Journal of Science, v. 262, p. 145-198"	
1024	-113.173611	34.622222	113	10	25	W	34	37	20	N	US	AZ	Yavapai	62500	Bagdad	Outcrop or artificial surface exposure	Granite		"Geophysics Lab, CIW"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	BAGDAD	"Davies, G.L., 1954, Age of rocks  ""In"" Abelson, P.H., Annual Report Of The Director: Geophysical Laboratory, Carnegie Institution of Washington Year Book 53, p. 104-106"	
1025	-108.750000	38.750000	108	45	0	W	38	45	0	N	US	CO	Mesa	250000	Moab	Outcrop or artificial surface exposure	Granite		"Geophysics Lab, CIW"	"Marvin, R.F."	76 03	Accurate to within 30 minutes (~30 miles)	UNCOMPAHGRE (UNCOMPAHGRE UPLIFT?--COMPILER)	"Davies, G.L., 1954, Age of rocks  ""In"" Abelson, P.H., Annual Report Of The Director: Geophysical Laboratory, Carnegie Institution of Washington Year Book 53, p. 104-106"	
1026	-106.666667	38.479167	106	40	0	W	38	28	45	N	US	CO	Gunnison	24000	Houston Gulch	Outcrop or artificial surface exposure	Granite		"Geophysics Lab, CIW"	"Marvin, R.F."	76 03	Accurate to within 5 minute (~5 miles)	NEAR OHIO CITY	"Davies, G.L., 1954, Age of rocks  ""In"" Abelson, P.H., Annual Report Of The Director: Geophysical Laboratory, Carnegie Institution of Washington Year Book 53, p. 104-106"	
1027	-113.173611	34.622222	113	10	25	W	34	37	20	N	US	AZ	Yavapai	62500	Bagdad	Outcrop or artificial surface exposure	Pegmatite		"Geophysics Lab, CIW"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)		"Davies, G.L., 1954, Age of rocks  ""In"" Abelson, P.H., Annual Report Of The Director: Geophysical Laboratory, Carnegie Institution of Washington Year Book 53, p. 104-106"	
1028	-105.789167	36.193056	105	47	21	W	36	11	35	N	US	NM	Taos	24000	Trampas	Mine	Pegmatite		"Geophysics Lab, CIW"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	HARDING MINE NEAR DIXON	"Davies, G.L., 1954, Age of rocks  ""In"" Abelson, P.H., Annual Report Of The Director: Geophysical Laboratory, Carnegie Institution of Washington Year Book 53, p. 104-106"	
1029	-106.625556	38.541667	106	37	32	W	38	32	30	N	US	CO	Gunnison	24000	Parlin	Mine	Pegmatite		"Geophysics Lab, CIW"	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	BROWN DERBY MINE NEAR OHIO CITY	"Davies, G.L., 1954, Age of rocks  ""In"" Abelson, P.H., Annual Report Of The Director: Geophysical Laboratory, Carnegie Institution of Washington Year Book 53, p. 104-106"	
1030	-106.325000	42.741667	106	19	30	W	42	44	30	N	US	WY	Natrona	24000	Crimson Dawn	Outcrop or artificial surface exposure	Pegmatite		Yale	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"CASPER MOUNTAIN, LARAMIE RANGE"	"Hills, F.A., and Armstrong, R.L., 1974, Geochronology Of Precambrian Rocks In The Laramie Range and Implications For The Tectonic Framework Of Precambrian Southern Wyoming: Precambrian Research, v. 1, p. 213-225."	
1031	-105.291667	41.883333	105	17	30	W	41	53	0	N	US	WY	Albany	24000	Moonshine Peak	Outcrop or artificial surface exposure	Syenite		Yale	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	LARAMIE RANGE	"Hills, F.A., and Armstrong, R.L., 1974, Geochronology Of Precambrian Rocks In The Laramie Range and Implications For The Tectonic Framework Of Precambrian Southern Wyoming: Precambrian Research, v. 1, p. 213-225."	
1032	-105.325000	41.908333	105	19	30	W	41	54	30	N	US	WY	Albany	24000	Moonshine Peak	Outcrop or artificial surface exposure	Schist		Yale	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	LARAMIE RANGE	"Hills, F.A., and Armstrong, R.L., 1974, Geochronology Of Precambrian Rocks In The Laramie Range and Implications For The Tectonic Framework Of Precambrian Southern Wyoming: Precambrian Research, v. 1, p. 213-225."	
1033	-105.383333	41.925000	105	23	0	W	41	55	30	N	US	WY	Albany	24000	Bull Camp Peak	Outcrop or artificial surface exposure	Amphibolite		Yale	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	LARAMIE RANGE	"Hills, F.A., and Armstrong, R.L., 1974, Geochronology Of Precambrian Rocks In The Laramie Range and Implications For The Tectonic Framework Of Precambrian Southern Wyoming: Precambrian Research, v. 1, p. 213-225."	
1034	-105.408333	41.950000	105	24	30	W	41	57	0	N	US	WY	Albany	24000	Bull Camp Peak	Outcrop or artificial surface exposure	Gneiss	GRANITIC GNEISS COMPLEX	Yale	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	LARAMIE RANGE	"Hills, F.A., and Armstrong, R.L., 1974, Geochronology Of Precambrian Rocks In The Laramie Range and Implications For The Tectonic Framework Of Precambrian Southern Wyoming: Precambrian Research, v. 1, p. 213-225."	
1035	-105.441667	41.958333	105	26	30	W	41	57	30	N	US	WY	Albany	24000	Bull Camp Peak	Outcrop or artificial surface exposure	Gneiss	GRANITIC GNEISS COMPLEX	Yale	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	LARAMIE RANGE	"Hills, F.A., and Armstrong, R.L., 1974, Geochronology Of Precambrian Rocks In The Laramie Range and Implications For The Tectonic Framework Of Precambrian Southern Wyoming: Precambrian Research, v. 1, p. 213-225."	
1036	-105.333333	42.058333	105	20	0	W	42	3	30	N	US	WY	Albany	24000	Reese Mountain	Outcrop or artificial surface exposure	Gneiss	GRANITIC GNEISS COMPLEX	Yale	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	LARAMIE RANGE	"Hills, F.A., and Armstrong, R.L., 1974, Geochronology Of Precambrian Rocks In The Laramie Range and Implications For The Tectonic Framework Of Precambrian Southern Wyoming: Precambrian Research, v. 1, p. 213-225."	
1037	-105.483333	41.958333	105	29	0	W	41	57	30	N	US	WY	Albany	24000	Bull Camp Peak	Outcrop or artificial surface exposure	Gneiss	GRANITIC GNEISS COMPLEX	Yale	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	LARAMIE RANGE	"Hills, F.A., and Armstrong, R.L., 1974, Geochronology Of Precambrian Rocks In The Laramie Range and Implications For The Tectonic Framework Of Precambrian Southern Wyoming: Precambrian Research, v. 1, p. 213-225."	
1038	-105.458333	41.966667	105	27	30	W	41	58	0	N	US	WY	Albany	24000	Bull Camp Peak	Outcrop or artificial surface exposure	Gneiss	GRANITIC GNEISS COMPLEX	Yale	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	LARAMIE RANGE	"Hills, F.A., and Armstrong, R.L., 1974, Geochronology Of Precambrian Rocks In The Laramie Range and Implications For The Tectonic Framework Of Precambrian Southern Wyoming: Precambrian Research, v. 1, p. 213-225."	
1039	-105.583333	42.083333	105	35	0	W	42	5	0	N	US	WY	Albany	24000	Garrett	Outcrop or artificial surface exposure	Gneiss	GRANITIC GNEISS COMPLEX	Yale	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	LARAMIE RANGE	"Hills, F.A., and Armstrong, R.L., 1974, Geochronology Of Precambrian Rocks In The Laramie Range and Implications For The Tectonic Framework Of Precambrian Southern Wyoming: Precambrian Research, v. 1, p. 213-225."	
1040	-105.650000	42.116667	105	39	0	W	42	7	0	N	US	WY	Albany	24000	Pinto Creek	Outcrop or artificial surface exposure	Gneiss	GRANITIC GNEISS COMPLEX	Yale	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	LARAMIE RANGE	"Hills, F.A., and Armstrong, R.L., 1974, Geochronology Of Precambrian Rocks In The Laramie Range and Implications For The Tectonic Framework Of Precambrian Southern Wyoming: Precambrian Research, v. 1, p. 213-225."	
1041	-105.700000	42.275000	105	42	0	W	42	16	30	N	US	WY	Albany	24000	Cottonwood Creek	Outcrop or artificial surface exposure	Gneiss	GRANITIC GNEISS COMPLEX	Yale	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	LARAMIE RANGE	"Hills, F.A., and Armstrong, R.L., 1974, Geochronology Of Precambrian Rocks In The Laramie Range and Implications For The Tectonic Framework Of Precambrian Southern Wyoming: Precambrian Research, v. 1, p. 213-225."	
1042	-105.683333	42.391667	105	41	0	W	42	23	30	N	US	WY	Converse	24000	School Section Mountain	Outcrop or artificial surface exposure	Gneiss	GRANITIC GNEISS COMPLEX	Yale	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	LARAMIE RANGE	"Hills, F.A., and Armstrong, R.L., 1974, Geochronology Of Precambrian Rocks In The Laramie Range and Implications For The Tectonic Framework Of Precambrian Southern Wyoming: Precambrian Research, v. 1, p. 213-225."	
1043	-105.525000	41.966667	105	31	30	W	41	58	0	N	US	WY	Albany	24000	Dodge Ranch	Outcrop or artificial surface exposure	Gneiss		Yale	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	LARAMIE RANGE	"Hills, F.A., and Armstrong, R.L., 1974, Geochronology Of Precambrian Rocks In The Laramie Range and Implications For The Tectonic Framework Of Precambrian Southern Wyoming: Precambrian Research, v. 1, p. 213-225."	
1044	-105.341667	41.775000	105	20	30	W	41	46	30	N	US	WY	Albany	24000	Poe Mountain	Outcrop or artificial surface exposure	Anorthosite	LARAMIE ANORTHOSITE	Yale	"Marvin, R.F."	76 03	Accurate to within 1 minute (~1 mile)	"ILMENITE PROSPECT, LARAMIE RANGE"	"Hills, F.A., and Armstrong, R.L., 1974, Geochronology Of Precambrian Rocks In The Laramie Range and Implications For The Tectonic Framework Of Precambrian Southern Wyoming: Precambrian Research, v. 1, p. 213-225."	
1045	-105.266667	42.050000	105	16	0	W	42	3	0	N