RecNo	RbSrRecNo	RbSrAge	RbSrErr	87_86Init	RbSrMin	RbSrAnlTyp	RbSrLabNo	RbSrDecCon	Rb_ppm	Sr_ppm	87SrRad	87Rb_86Sr	87Sr_86Sr	Norm	SampSuit	AddRef	RbSrAgeCom	RbSrSamCom	RbSrAnlCom	RbSrOthCom
3	1	2846.8	350	0.7	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1	0.0000147*	146	536	1.71		0.7328	N			age of intrusion			
4	1	2670.82	150	0.7	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	2	0.0000147*	85.7	91.9	0.94		0.8083	N			age of intrusion			
5	1	1635.62	90	0.7	K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	3	0.0000147*	266	170	1.77		0.8103	N			age of metamorphic crystallization			
77	1	2574.51	20	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	WYLL-2-WII	0.0000139*	57.4	839.6	0.58	0.197	0.709	N	1		age of intrusion	SECOND SPLIT OF WHOLE ROCK.  RADIOGENIC 87SR VALUE CALCULATED BY COMPILER.		
78	1	2574.51	20	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	WYWR-4-WI	0.0000139*	61.4	841	0.67	0.211	0.7101	N	1		age of intrusion	FIRST WHOLE ROCK SPLIT.  RADIOGENIC 87SR VALUE WAS CALCULATED BY COMPILER.		
78	2	2574.51	20	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	WYWR-4-WIII	0.0000139*	60.5	842	0.5	0.207	0.708	N	1		age of intrusion	THIRD WHOLE-ROCK SPLIT.  RADIOGENIC 87SR VALUE WAS CALCULATED BY COMPILER.		
78	3	2722.58	20	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	WYWR-4-R#4	0.0000147*	54.6	841	0.59	0.187	0.7091	N	1		age of intrusion	FOURTH WHOLE-ROCK SPLIT.  RADIOGENIC 87SR VALUE WAS CALCULATED BY COMPILER.		
79	1	2574.51	20	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	WYLL-6-WII	0.0000139*	228	53.4	2.37	12.93	1.176	N	1		age of intrusion	SECOND WHOLE ROCK SPLIT		
79	2	2574.51	20	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	WYLL-6-W-III	0.0000139*	226	52.9	2.34	12.95	1.176	N	1		age of intrusion	THIRD WHOLE-ROCK SPLIT		
80	1	2574.51	20	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	WYLL-7D-W	0.0000139*	87.5	760	0.93	0.333	0.7145	N	1		age of intrusion			
81	1	2222.1	90		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	WYLL-12-MUS	0.0000139*	159	17.8	14.5	1399	45.64	N			initial age disturbed by later metamorphism	SLIGHTLY DEFORMED MUSCOVITE BOOK ABOUT 12X8X0.5 CM		
81	2	2349.36	90		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	WYLL-12-BIO	0.0000139*	3109	31.2	29.9	6770	230.1	N			initial age disturbed by later metamorphism			
82	1	2574.51	20	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	WYLL-13-WI	0.0000139*	172	134	1.84	3.77	0.8439	N	1		age of intrusion	FIRST WHOLE-ROCK SPLIT		
82	2	2574.51	20	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	WYLL-13-R#8	0.0000139*	174	134	1.82	3.82	0.8424	N	1		age of intrusion	EIGHTH WHOLE-ROCK SPLIT		
83	1	2574.51	20	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	WYWR-37-WI	0.0000139*	104	201	1.14	1.501	0.7603	N	1		age of intrusion	RADIOGENIC 87SR CALCULATED BY COMPILER		
84	1	2574.51	20	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	WYLL-7A-W	0.0000139*	163	122	1.73	3.94	0.8496	N	1		age of intrusion	
85	1	2349.36		0.719	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	WYLL-7A-PLAG	0.0000139*	26.8	103	0.25	0.758	0.7441	N	2		initial age disturbed by later metamorphism	
85	2	2349.36		0.719	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	WYLL-7A-MICRO	0.0000139*	415	119	3.95	10.42	1.069	N	2		initial age disturbed by later metamorphism	
86	1	2496.2		0.709	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	WYLL-13-PLAG	0.0000139*	36.2	126	0.37	0.836	0.7393	N	3		initial age disturbed by later metamorphism	
86	2	2496.2		0.709	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	WYLL-13-MICRO	0.0000139*	434	211	4.44	6.09	0.929	N	3		initial age disturbed by later metamorphism	
87	1	1644.55			whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	WYLL-13-WI	0.0000139*	172	134	1.84	3.77	0.8439	N	4		initial age disturbed by later metamorphism	
87	2	1644.55			whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	WYLL-13-R#8	0.0000139*	174	134	1.82	3.82	0.8424	N	4		initial age disturbed by later metamorphism	
87	3	1739.14			biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	WYLL-13-BIO	0.0000147*	1216	28.5	8.2	173.4	4.855	N	4		initial age disturbed by later metamorphism	
88	1	1957.8		0.78	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	WYLL-6-PLAG	0.0000139*	45.5	45.1	0.38	2.96	0.8677	N	5		initial age disturbed by later metamorphism	
88	2	1957.8		0.78	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	WYLL-6-MICRO	0.0000139*	658	39.7	5.4	56	2.4	N	5		initial age disturbed by later metamorphism	
89	1	2535.35	50	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	WYWR-4-W	0.0000139*	58.9	841	0.5	0.202	0.709	N	6		age of intrusion	ANALYTICAL DATA FOR THREE WHOLE-ROCK SPLITS WERE AVERAGED. RADIOGENIC 87SR VALUE CALCULATED BY COMPILER.
89	2	2535.35	50	0.703	apatite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	WYWR-4-AP	0.0000139*		508			0.7035	N	6		age of intrusion	RUBIDIUM CONTENT NOT GIVEN.
89	3	2681.17	50	0.703	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	WYWR-4-PLAG	0.0000147*	10.3	820	0.19	0.036	0.7053	N	6		age of intrusion	RADIOGENIC 87SR VALUE CALCULATED BY COMPILER.
89	4	2681.17	50	0.703	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	WYWR-4-MICRO	0.0000147*	134	865	1.41	0.45	0.7197	N	6		age of intrusion	RADIOGENIC 87SR VALUE CALCULATED BY COMPILER.
89	5	2681.17	50	0.703	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	WYWR-4-BIO	0.0000147*	210	102	2.18	6.048	0.9245	N	6		age of intrusion	RADIOGENIC 87SR VALUE CALCULATED BY COMPILER.
94	1	1407.87	50		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	WY12E	0.0000147*	308	27.7	1.75			N	7		age of later metamorphism	
96	1	1884.06	70		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	WY12G	0.0000147*	371	35.3	2.86			N	7		age of later metamorphism	THIS ONE OF TWO BIOTITE SPLITS  OF DIFFERENT MESH SIZE.
96	2	1842.66	70		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	WY12G'	0.0000147*	354	42.2	2.65			N	7		age of later metamorphism	THIS IS ONE OF TWO BIOTITE SPLITS OF DIFFERENT MESH SIZE.
97	1	2256.74	90		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	WY12H	0.0000147*	446	61.8	4.08			N	7		age of later metamorphism	
98	1	2380.96	90		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	WY12J	0.0000147*	281	24.8	2.74			N	7		age of later metamorphism	
99	1	2432.72	90		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	WY12N	0.0000147*	378	41	3.77			N	7		age of later metamorphism	
130	1	1381.99	30	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M25	0.0000147*	164	119		4.077	0.7873	T	8		age of intrusion	87RB/86SR RATIO CALCULATED BY COMPILER
131	1	1381.99	30	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M26	0.0000147*	135	867		0.4642	0.7157	T	8		age of intrusion	87RB/86SR RATIO CALCULATED BY COMPILER
132	1	1381.99	30	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M27	0.0000147*	156	142		3.179	0.7695	T	8		age of intrusion	87RB/86SR RATIO CALCULATED BY COMPILER
133	1	1568.33	40	0.6402	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M35-MU	0.0000147*	1926	13.2	12.3	6253	139.9	T			age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
133	2	1568.33	40	0.6402	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M35-MI	0.0000147*	1023	18.2	6.36	249.8	6.203	T			age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
133	3	1568.33	40	0.6402	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M35-PL	0.0000147*	35.5	22.3	0.24	8.199	0.8228	T			age of metamorphic crystallization	87RB/86SR RATIO  CALCULATED BY COMPILER
134	1	1381.99	30	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M36	0.0000147*	2.39	90.5		0.0555	0.7076	T	8		age of intrusion	87RB/86SR RATIO CALCULATED BY COMPILER
134	2	1381.99	30	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M36	0.0000147*	2.39	89.5		0.0959	0.7084	T	8		age of intrusion	87RB/86SR CALCULATED BY COMPILER
135	1	1506.22	40	0.7153	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M75-MU	0.0000147*	509	7.37	3.12	350.8	8.219	T			age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
135	2	1506.22	40	0.7153	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M75-MI	0.0000147*	609	19.9	3.75	110.4	3.076	T			age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
136	1	2422.37	50	0.7036	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M4	0.0000147*	117	129		2.82	0.8006	T	16		age of intrusion	87RB/86SR RATIO CALCULATED BY COMPILER.
137	1	2422.37	50	0.7036	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M19	0.0000147*	141	138		2.948	0.805	T	16		age of intrusion	87RB/86SR RATIO CALCULATED BY COMPILER.
138	1	2422.37	50	0.7036	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M20	0.0000147*	151	116		3.916	0.8383	T	16		age of intrusion	87RB/86SR RATIO CALCULATED BY COMPILER.
139	1	2422.37	50	0.7036	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M21	0.0000147*	77	232		1.02	0.7387	T	16		age of intrusion	87RB/86SR RATIO CALCULATED BY COMPILER
140	1	2422.37	50	0.7036	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M22	0.0000147*	286	78.7		11.17	1.088	T	16		age of intrusion	87RB/86SR RATIO CALCULATED BY COMPILER.
141	1	2422.37	50	0.7036	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M43	0.0000147*	148	137		3.299	0.8171	T	16		age of intrusion	87RB/86SR RATIO CALCULATED BY COMPILER.
142	1	2422.37	50	0.7036	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M43'	0.0000147*	154	135		3.27	0.8161	T	16		age of intrusion	87RB/86SR RATIO CALCULATED BY COMPILER.
143	1	1521.74	160	0.7026	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M56	0.0000147*	58.4	47.7		2.665	0.7608	T	9		initial age disturbed by later metamorphism	87RB/86SR RATIO CALCULATED BY COMPILER
144	1	1521.74	160	0.7026	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M57	0.0000147*	68	42.5		4.748	0.8063	T	9		initial age disturbed by later metamorphism	87RB/86SR RATIO CALCULATED BY COMPILER.
145	1	1521.74	160	0.7026	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M58	0.0000147*	134	66.9		5.847	0.8303	T	9		initial age disturbed by later metamorphism	87RB/86SR RATIO CALCULATED BY COMPILER.
146	1	1775.37	60	0.7002	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M72	0.0000147*	118	33.5		10.5	0.9682	T	10		maximum age of intrusion	87RB/86SR RATIO CALCULATED BY COMPILER.
147	1	1775.37	60	0.7002	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M73	0.0000147*	119	118		2.961	0.7758	T	10		maximum age of intrusion	87RB/86SR RATIO CALCULATED BY COMPILER.
148	1	1775.37	60	0.7002	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M74	0.0000147*	37.5	192		0.5562	0.7144	T	10		maximum age of intrusion	87RB/86SR RATIO CALCULATED BY COMPILER.
150	1	2494.83	50	0.7017	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M40A	0.0000147*	180	194		2.775	0.8	T	14		age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER.
151	1	2494.83	50	0.7017	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M41	0.0000147*	98	822		0.3444	0.7139	T	14		age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
152	1	2494.83	50	0.7017	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M44C	0.0000147*	195	153		3.862	0.8385	T	14		age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
153	1	2339.55	80	0.7037	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M61B	0.0000147*	122	46.5		7.956	0.968	T	15		initial age disturbed by later metamorphism	87RB/86SR RATIO CALCULATED BY COMPILER
154	1	2494.83	50	0.7017	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M61C	0.0000147*	2.04	53.9		0.1411	0.7067	T	14		age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
155	1	2494.83	50	0.7017	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M61D	0.0000147*	99.9	151		1.922	0.7698	T	14		age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
156	1	1542.45	70	0.743	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M43'	0.0000147*	154	135		3.338	0.8161	T	17		age of later metamorphism	87RB/86SR RATIO CALCULATED BY COMPILER
156	2	1542.45	70	0.743	apatite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M43'-AP	0.0000147*	0.6	133			0.7397	T	17		age of later metamorphism	
156	3	1542.45	70	0.743	epidote	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M43'-EP	0.0000147*	9.45	690		0.1918	0.7472	T	17		age of later metamorphism	87RB/86SR RATIO CALCULATED BY COMPILER
156	4	1542.45	70	0.743	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M43'-PL	0.0000147*	8.18	224		0.1416	0.7461	T	17		age of later metamorphism	87RB/86SR RATIO CALCULATED BY COMPILER
156	5	1542.45	70	0.743	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M43'-MI	0.0000147*	293	136		6.425	0.8837	T	17		age of later metamorphism	87RB/86SR RATIO CALCULATED BY COMPILER
157	1	1635.62	35	0.8245	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M22	0.0000147*	286	78.7		11.35	1.088	T			age of later metamorphism	87RB/86SR RATIO CALCULATED BY COMPILER
157	2	1635.62	35	0.8245	apatite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M-22-AP	0.0000147*				0.2885	0.8312				age of later metamorphism	87RB/86SR RATIO CALCULATED BY COMPILER.  NO DATA LISTED FOR RB OR SR CONTENT
157	3	1635.62	35	0.8245	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M22-PL	0.0000147*	10.1	75.4		0.2497	0.8303	T			age of later metamorphism	87RB/86SR RATIO CALCULATED BY COMPILER
157	4	1635.62	35	0.8245	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M22-MI	0.0000147*	708	55.6		23.66	1.374	T			age of later metamorphism	87RB/86SR RATIO CALCULATED BY COMPILER
157	5	1501.04	40	0.8245	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M22-BI	0.0000147*	1773	19.1		640.3	14.47	T			age of later metamorphism	87RB/86SR RATIO CALCULATED BY COMPILER
158	1	1604.56	425	0.7281	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M23A	0.0000147*	119	74.8		4.847	0.8398	T	11		age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
159	1	1604.56	425	0.7281	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M23B	0.0000147*	78.2	39.2		5.58	0.8567	T	11		age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
160	1	1604.56	425	0.7281	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M23C	0.0000147*	145	83		5.411	0.8528	T	11		age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
161	1	1604.56	425	0.7281	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M23D	0.0000147*	138	59.3		7.134	0.8925	T	11		age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
162	1	1604.56	425	0.7281	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M23E	0.0000147*	157	73.9		6.379	0.8751	T	11		age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
163	1	1604.56	425	0.7281	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M23F	0.0000147*	137	65.2		6.123	0.8692	T	11		age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
164	1	1708.08	60	0.7495	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M30A	0.0000147*	116	33.5		10.65	1.011	T	12		age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
165	1	1708.08	60	0.7495	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M30B	0.0000147*	164	31.5		15.42	1.128	T	12		age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
166	1	1708.08	60	0.7495	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M30C	0.0000147*	96.9	35.6		8.228	0.9515	T	12		age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
167	1	1708.08	60	0.7495	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M30D	0.0000147*	5.08	91		0.0774	0.7514	T	12		age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
168	1	1708.08	60	0.7495	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M30E	0.0000147*	90.2	12.5		22.26	1.296	T	12		age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
169	1	1604.56	40	0.7277	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M31	0.0000147*	127	62.6		5.949	0.8648	T			age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
169	2	1604.56	40	0.7277	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M31-BI	0.0000147*	525	16.6		115.4	3.388	T			age of metamorphic crystallization	87RB/86SR RATIO CALCULATED  BY COMPILER
170	1	1904.77		0.7003	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M11	0.0000147*	117	19.5		23.16	1.201	T	13		age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER
171	1	1904.77		0.7003	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M13	0.0000147*	70.3	89.2		2.923	0.7635	T	13		age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER.
172	1	2588	60	0.4697	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KD-1MU	0.0000147*	2440	28.1	25.9	3265	120.46	T			age of intrusion	87RB/86SR RATIO CALCULATED BY COMPILER.
172	2	2588	60	0.4697	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KD-1MI	0.0000147*	1084	14.5	11.3	1015	37.77	T			age of intrusion	87RB/86SR RATIO CALCULATED BY COMPILER.
173	1	1625.26	40	0.71	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M77-MU	0.0000147*	1742	17.8	11.5		19.2	T			age of metamorphic crystallization	
174	1	1645.97	40	0.7449	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M78-MU	0.0000147*	1985	16.5	13.3	1889	44.9	T			age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER.
174	2	1645.97	40	0.7449	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M78-MI	0.0000147*	562	155	3.77	10.64	0.9936	T			age of metamorphic crystallization	87RB/86SR RATIO CALCULATED BY COMPILER.
174	3	1863.36		0.71	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M78-MI	0.0000147*	562	155	3.77		0.9936	T			age of metamorphic crystallization	
175	1	2339.55	80	0.7037	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M61D	0.0000147*	99.9	151		1.99	0.7698	T	15		initial age disturbed by later metamorphism	87RB/86SR RATIO CALCULATED BY COMPILER.
176	1	1521.74	40	0.743	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M43'-BI	0.0000147*	845	12.7		331.5	7.907	T	17		age of later metamorphism	87RB/86SR RATIO CALCULATED BY COMPILER.
196	1	2795.04	80		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1	0.0000147*									maximum age of intrusion	NO ANALYTICAL DATA GIVEN
196	2	2329.2	70		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1	0.0000147*									age of intrusion	NO ANALYTICAL DATA GIVEN
196	3	1997.94	60		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1	0.0000147*									initial age disturbed by later metamorphism	NO ANALYTICAL DATA GIVEN
197	1	2608.7	80		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	2	0.0000147*									age of intrusion	NO ANALYTICAL DATA GIVEN
197	2	2474.13	70		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	2	0.0000147*									age of intrusion	NO ANALYTICAL DATA GIVEN
198	1	2474.13	70		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	3	0.0000147*									age of intrusion	NO ANALYTICAL DATA GIVEN.
199	1	2556.94	70		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	4	0.0000147*									age of intrusion	NO ANALYTICAL DATA GIVEN
199	2	2432.72	70		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	4	0.0000147*									age of intrusion	NO ANALYTICAL DATA GIVEN
210	1	135.61	40		glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G3224	0.0000147*	187	151	0.1			T			minimum age of volcanism	
211	1	132.51	40		glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-3225	0.0000147*	191	163	0.1			T			minimum age of volcanism	
213	1	2740.92	50		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	GMYB-11	0.0000139*	4580	1.5	50.1			N		Giletti (1968)	maximum age of intrusion	A SINGLE BOOK ABOUT TWO INCHES ACROSS WAS ANALYZED.  LISTED DATA IS AVERAGE OF REPLICATE DETERMINATIONS.
214	1	2643.03	100		microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	GMYB-12	0.0000139*	714	96.3	7.91			N		Giletti (1968)	maximum age of intrusion	
215	1	2643.03	67		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	GMYB-16	0.0000139*	1345	0.9	14.48			N		Giletti (1968)	maximum age of intrusion	
216	1	2691.98	60		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	GSMYB-17	0.0000139*	622	10.2	7.27			N		Giletti (1968)	maximum age of metamorphic crystallization	95% PURE CONCENTRATE
217	1	2662.61	65		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	GMYB-19	0.0000139*	342.7	9.4	3.73			N		Giletti (1968)	maximum age of intrusion	BIOTITE CONCENTRATE CONTAINED LESS THAN 5% IMPURITIES.
218	1	2701.76	70		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	GSMYB-20	0.0000139*	461	28.8	5.09			N		Giletti (1968)	maximum age of metamorphic crystallization	BIOTITE CONCENTRATE CONTAINED LESS THAN 5% IMPURITIES.
221	1	1380.25	70		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NOT GIVEN	0.0000139*	1056		5.83						minimum age of intrusion	
222	1	1899.07	100		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NOT GIVEN	0.0000139*	416.5		3.17						minimum age of intrusion	
225	1	2956.28	300		lepidolite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	18490		176						maximum age of intrusion	ARTICLE DID NOT SAY IF 87SR VALUE WAS FOR RADIOGENIC 87SR.
226	1	2603.87			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1	0.0000139*									age of intrusion	NO ANALYTICAL DATA GIVEN
226	2	1948.01			microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1	0.0000139*									initial age disturbed by later metamorphism	NO ANALYTICAL DATA GIVEN
227	1	1331.3			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	2	0.0000139*									initial age disturbed by later metamorphism	NO ANALYTICAL DATA GIVEN
228	1	1722.86			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	3	0.0000139*									initial age disturbed by later metamorphism	NO ANALYTICAL DATA GIVEN
229	1	2486.41			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	4	0.0000139*									age of intrusion	NO ANALYTICAL DATA GIVEN
230	1	2319.99			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	5	0.0000139*									age of intrusion	NO ANALYTICAL DATA GIVEN
231	1	2662.61			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	6	0.0000139*									maximum age of intrusion	NO ANALYTICAL DATA GIVEN
232	1	2584.3			microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	7	0.0000139*									age of intrusion	NO ANALYTIC DATA GIVEN
233	1	2496.2			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8	0.0000139*									age of metamorphic crystallization	NO ANALYTICAL DATA GIVEN
234	1	2398.3			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	9	0.0000139*								Hills and others (1968)	age of metamorphic crystallization	NO ANALYTICAL DATA GIVEN
235	1	1683.71			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	10	0.0000139*									age of metamorphic crystallization	NO ANALYTICAL DATA GIVEN
236	1	1624.97			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	11	0.0000139*								Hills and others (1968)	age of intrusion	NO ANALYTICAL DATA GIVEN
237	1	2496.2			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	12	0.0000139*									age of metamorphic crystallization	N0 ANALYTICAL DATA GIVEN
238	1	1390.04			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	13	0.0000139*									age of intrusion	NO ANALYTICAL DATA GIVEN
239	1	2732.93	50		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000147*								Gast and others (1958)	age of intrusion	NO ANALYTICAL DATA GIVEN
240	1	2629.41	100		microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000147*								Gast and others (1958)	age of intrusion	NO ANALYTICAL DATA GIVEN
241	1	2629.41	70		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000147*								Gast and others (1958)	age of intrusion	NO ANALYTICAL DATA GIVEN
242	1	2681.17	60		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000147*								Gast and others (1958)	age of metamorphic crystallization	NO ANALYTICAL DATA GIVEN
243	1	2650.11	70		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000147*								Gast and others (1958)	age of intrusion	NO ANALYTICAL DATA GIVEN
244	1	2691.52	70		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NOT GIVEN	0.0000147*								Gast and others (1958)	age of metamorphic crystallization	NO ANALYTICAL DATA GIVEN
245	1	1335.41			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NOT GIVEN	0.0000147*									initial age disturbed by later metamorphism	NO ANALYTICAL DATA GIVEN
246	1	1935.82			microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NOT GIVEN	0.0000147*									initial age disturbed by later metamorphism	NO ANALYTICAL DATA GIVEN
246	2	2588			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000147*									age of intrusion	NO ANALYTICAL DATA GIVEN
247	1	2588			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NOT GIVEN	0.0000147*									age of intrusion	NO ANALYTICAL DATA GIVEN
262	1	2627.34	58	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-46	0.0000147*	31.3	142.9	0.34	0.633	0.7263	N	18		age of intrusion	RADIOGENIC 87SR CALCULATED BY COMPILER
263	1	2627.34	58	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-47	0.0000147*	62	190.6	0.67	0.941	0.7385	N	18		age of intrusion	RADIOGENIC 87SR CALCULATED BY COMPILER
264	1	2627.34	58	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-50A	0.0000147*	47.6	172.8	0.48	0.796	0.7305	N	18		age of intrusion	RADIOGENIC 87SR CALCULATED BY COMPILER
265	1	2627.34	58	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-1	0.0000147*	35.9	162.1	0.37	0.64	0.7259	N	18		age of intrusion	RADIOGENIC 87SR CALCULATED BY COMPILER
266	1	2627.34	58	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-2	0.0000147*	23.1	58.5	0.24	1.142	0.7447	N	18		age of intrusion	RADIOGENIC 87SR VALUE CALCULATED BY COMPILER
269	1	2627.34		0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-16A	0.0000147*	52	133.8	0.52	0.865	0.7327	N	18		age of intrusion	RADIOGENIC 87SR VALUE CALCULATED BY COMPILER.
270	1	2627.34	58	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-21	0.0000147*	37.5	162.5	0.41	0.668	0.728	N	18		age of intrusion	RADIOGENIC 87SR VALUE CALCULATED BY COMPILER.
272	1	1280.54	77	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-25	0.0000147*	68.3	274.1	0.31	0.721	0.7172	N	19		age of intrusion	RADIOGENIC 87SR VALUE CALCULATED BY COMPILER
281	1	2496.2			whole rock		BT-3	0.0000139*									age of intrusion	NO ANALYTICAL DATA GIVEN
282	1	2496.2			whole rock		BT-4	0.0000139*								Baadsgaard and Mueller (1973)	age of intrusion	NO ANALYTICAL DATA GIVEN
283	1	2496.2			whole rock		BT-5	0.0000139*								Baadsgaard and Mueller (1973)	age of intrusion	NO ANALYTICAL DATA GIVEN
284	1	2496.2			whole rock		BT-6	0.0000139*								Baadsgaard and Mueller (1973)	age of intrusion	NO ANALYTICAL DATA GIVEN
285	1	1468.35			whole rock		BT- 7	0.0000139*								Baadsgaard and Mueller (1973)	age of intrusion	NO ANALYTICAL DATA GIVEN
287	1	2814.34	150	0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	986A	0.0000139*	13.7	282.7	0.02	0.14	0.7062	T	21		age of metamorphic crystallization	RADIOGENIC 87SR VALUE CALCULATED BY COMPILER.
288	1	2814.34	150	0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	984A	0.0000139*	35.7	76.9	0.57	1.35	0.7756	T	21		age of metamorphic crystallization	RADIOGENIC 87SR VALUE CALCULATED BY COMPILER
288	2	2731.13	400	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	984A	0.0000139*	35.7	76.9		1.35	0.7756	T	22		age of metamorphic crystallization	
289	1	2814.34	150	0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	985A	0.0000139*	41.6	60.9		1.98	0.777	T	21		age of metamorphic crystallization	
289	2	2731.13	400	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	985A	0.0000139*	41.6	60.9		1.98	0.777	T	22		age of metamorphic crystallization	
290	1	2814.34	150	0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1181A	0.0000139*	67.1	78.5		2.5	0.8079	T	21		age of metamorphic crystallization	
290	2	2731.13	400	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1181A	0.0000139*	67.1	78.5		2.5	0.8079	T	22		age of metamorphic crystallization	
291	1	2814.34	150	0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	416	0.0000139*	63	52.2		3.56	0.8464	T	21		age of metamorphic crystallization	
291	2	2731.13	400	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	416	0.0000139*	63	52.2		3.56	0.8464	T	22		age of metamorphic crystallization	
292	1	2814.34	150	0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	437	0.0000139*	78.3	128.5		5.03	0.8991	T	21		age of metamorphic crystallization	
292	2	2731.13	400	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	437	0.0000139*	78.3	128.5		5.03	0.8991	T	22		age of metamorphic crystallization	
293	1	2814.34	150	0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1294A	0.0000139*	11.5	144.7	0.12	0.232	0.7082	T	21		age of metamorphic crystallization	RADIOGENIC 87SR VALUE CALCULATED BY COMPILER
294	1	2814.34	150	0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1294B	0.0000139*	23	151.8	0.29	0.438	0.7192	T	21		age of metamorphic crystallization	RADIOGENIC 87SR VALUE CALCULATED BY COMPILER.
295	1	2814.34	150	0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1294G	0.0000139*	39	167.5	0.43	0.675	0.7265	T	21		age of metamorphic crystallization	RADIOGENIC 87SR VALUE CALCULATED BY COMPILER.
296	1	2442.36	75	0.732	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	421	0.0000139*	104.9	68.1	1.04	4.54	0.8915	T	23		age of intrusion	
297	1	2442.36	75	0.732	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-1	0.0000139*	173.2	65.3	1.76	7.91	1.016	T	23		age of intrusion	
298	1	2442.36	75	0.732	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	TC-1	0.0000139*	210.2	58.8	2.1	10.75	1.11	T	23		age of intrusion	
298	2	1830.54	90	0.834	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	TC-1	0.0000139*	20.5	50.1	0.67	1.24	0.8754	T	24		initial age disturbed by later metamorphism	PLAGIOCLASE  PARTLY SERICITIZED
298	3	1935.82	90	0.834	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	TC-1	0.0000147*	409	75.2	3.1	16.62	1.278	T	24		initial age disturbed by later metamorphism	
298	4				muscovite		TC-1	0.0000147*	551.2	17.5		118.9	3.852	T				AUTHOR DID NOT DETERMINE AN APPARENT AGE WITH THE LISTED ANALYTICAL DATA.
298	5				biotite		TC-1	0.0000147*	1189.2	39.1		108	3.032	T				AUTHOR DID NOT DETERMINE AN APPARENT AGE WITH THE LISTED ANALYTICAL DATA.  BIOTITE PARTLY CHLORITIZED.
299	1	2442.36	75	0.732	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	542	0.0000139*	161.6	38.9	1.63	12.6	1.181	T	23		age of intrusion			
300	1	2442.36	75	0.732	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	847	0.0000139*	172.6	29.1	1.68	17.83	1.346	T	23		age of intrusion			
301	1	2442.36	75	0.732	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	962	0.0000139*	215	33	2.19	20.12	1.456	T	23		age of intrusion			
301	2	1742.44	50	0.927	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	962	0.0000139*	40	56.5	0.34	2.1	0.9808	T	25		initial age disturbed by later metamorphism	PLAGIOCLASE SLIGHTLY CLOUDY		
301	3	1842.66	50	0.927	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	962	0.0000147*	539.3	47.2	3.86	33.06	1.761	T	25		initial age disturbed by later metamorphism			
301	4				muscovite		962	0.0000147*	643.5	40.8		54.62	2.72	T				AUTHOR DID NOT DETERMINE AN APPARENT AGE  WITH THE LISTED ANALYTICAL DATA.		
301	5				biotite		962	0.0000147*	636.9	60.3		33.44	1.662	T				AUTHOR DID NOT DETERMINE AN APPARENT AGE WITH THE LISTED ANALYTICAL DATA.  BIOTITE PARTLY CHLORITIZED.		
491	1	2672.4	70		microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	GMYB-6	0.0000139*	837	7.2	9.13			N		Giletti (1968)	minimum age of intrusion	PINK MICROCLINE WITH THIN PERTHITE LAMELLAE		
492	1	2476.62	45		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	GMYB-5	0.0000139*	1271	9.8	13.08			N		Giletti (1968)	minimum age of intrusion	SMALL BIOTITE BOOKS INTERGROWN WITH PLAGIOCLASE; MINOR CHLORITIZATION	ANALYTICAL DATA ARE AVERAGES OF REPLICATE DETERMINATIONS	AGE SOMEWHAT LOW DUE TO ALTERATION OF METANORITE
513	1	2496.2			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BT-1	0.0000139*								Baadsgaard and Mueller (1973)	age of intrusion		NO ANALYTICAL DATA GIVEN	
514	1	1468.35			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BT-8	0.0000139*								Baadsgaard and Mueller (1973)	age of intrusion			
558	1	367.09	19		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	963		1.47						age of intrusion	"FRESH, OBTAINED WHERE NO URANINITE OCCURS"	ANALYTICAL DATA ARE AVERAGES OF TWO DETERMINATIONS	
558	2	376.88	19		microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	569		0.86						age of intrusion	"FRESH, OBTAINED WHERE NO URANINITE OCCURS"		
559	1	1693.5	90		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	4088		28.2						age of intrusion			
559	2	1615.19	80		lepidolite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	11095		73.2						age of intrusion			
560	1	1380.25	70		lepidolite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	20389		114						age not evaluated		VALUES SHOWN ARE AVERAGES OF SEVEN ANALYSES	
561	1	1292.15	70		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A	0.0000139*	7703		40.4						age not evaluated	
561	2	1262.78	70		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	B	0.0000139*	6219		31.8						age not evaluated	
561	3	1321.52	70		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	C	0.0000139*	13887		75.7						age not evaluated	
561	4	1233.41	60		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	D	0.0000139*	9364		47						age not evaluated	
562	1	1360.67	70		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	2710		15						minimum age of intrusion	PRIMARY
563	1	1282.36	65		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	1180		6.15						minimum age of intrusion	BIOTITE SLIGHTLY LEACHED AND CONTAINS RODLIKE INCLUSIONS
564	1	1076.79	55		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	406		1.77						age of intrusion	NOT CHLORITIZED
565	1	998.48	50		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	827		3.49						age of intrusion	
566	1	185.99	10		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	1463		1.1						age not evaluated	
567	1	179.14	9		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NOT GIVEN)	0.0000139*	2085		1.55						age not evaluated	"RAGGED GRAINS, PARTIALLY CHLORITIZED, BUT GOOD SAMPLE OBTAINED BY MAGNETIC SEPARATION"
568	1	499.24	25		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	880		1.77						age of intrusion	
570	1	2368.94	120		lepidolite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	18200		176						age of intrusion	PURPLE
571	1	1468.35	75		lepidolite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	11700		69.9						age of intrusion	
572	1	1272.57	65		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	16700		87.7						minimum age of intrusion	PURPLE
573	1	1458.56	75		lepidolite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	12400		75						minimum age of intrusion	
574	1	103.76	5		lepidolite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A170	0.0000139*	17600		7.38						age of intrusion	
575	1	1341.09	70		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	1912		10.4						age of intrusion		
576	1	1311.73	70		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	848		4.56						age of intrusion		
577	1	1321.52	70		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	481		2.57						age of intrusion	BIOTITE IS CURVED AND HAS A RUSTY APPEARANCE	
578	1	1321.52	70		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	940		5.05						minimum age of intrusion	MODERATELY CHLORITIZED	
578	2	1331.3	70		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	449		2.42						minimum age of intrusion		
579	1	1057.21	50		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	1629		6.95						age of intrusion	PARTIALLY CHLORITIZED	
580	1	538.3	30	0.703	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ND1	0.0000147*	452.3		0.99					Peterman and Hedge (1964)	initial age disturbed by weathering		VALUES LISTED ARE AVERAGE OF TWO DETERMINATIONS
581	1	1604.56	80	0.703	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ND4	0.0000147*	660.8		4.32					Peterman and Hedge (1964)	initial age disturbed by later metamorphism		
582	1	1790.9	120		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	SD1	0.0000147*	278	266	2.04		0.782	N			age of intrusion		
583	1	1811.6	120		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	SD2	0.0000147*	182	181	1.34		0.7796	N			age of intrusion		
584	1	1728.78	90		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	SD3	0.0000147*	146	52.5	1.03			N			age of metamorphic crystallization		
587	1	1490.69	70		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	SD6	0.0000147*	512	9.6	3.11			N			minimum age of metamorphic crystallization		
588	1	1749.49	80		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	SD8	0.0000147*	386	14.5	2.75			N			"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"		
590	1	1656.32	110		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	SD10	0.0000147*	279	244	1.89		0.7827	N			age of intrusion		
591	1	1511.39	80		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	SD11	0.0000147*	232	91.8	1.42			N			age of intrusion		
592	1	1480.34	80		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	SD12	0.0000147*	344	102	2.07			N			age of intrusion		
593	1	2349.9	140		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	SD13	0.0000147*	384.5	343.5	3.72		0.8144	N			minimum age of intrusion	RB AND SR VALUES ARE AVERAGES OF TWO DETERMINATIONS	RB AND SR VALUES ARE AVERAGES OF TWO DETERMINATIONS
594	1	2588	240		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	SD14	0.0000147*	255	491	2.7		0.757	N			age of intrusion		
595	1	2722.58	250		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	SD15	0.0000147*	244	507	2.73		0.756	N			age of intrusion		
595	2	2494.83	300		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	SD15	0.0000147*	196	516	2		0.741	N			age of intrusion	PEGMATITIC PHASE OF GRANITE	
596	1	1697.73	90		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	SD16	0.0000147*	129	51.4	0.9		0.883	N			age of intrusion		
597	1	1697.73	80		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	SD17	0.0000147*	94.2	19.2	0.65			N			age of intrusion		
598	1	1666.67	80		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	SD18	0.0000147*	285	80.8	1.93			N			age of intrusion		
599	1	1459.63	100		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	SD19	0.0000147*	162	123	0.96		0.7838	N			age of intrusion		
600	1	1366.46	60		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	CO2	0.0000147*	221	9.08	1.22			N			initial age disturbed by later metamorphism		
600	2				K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	CO2	0.0000147*	28.8	295			0.7145	N					
600	3				whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	CO2	0.0000147*	31.6	246			0.7052	N					
601	1	1563.15	140		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	CO3	0.0000147*	170	223	1.08		0.7531	N			"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"		
602	1	1294	60		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	CO4	0.0000147*	430	7.09	2.25			N			"minimum age of intrusion, initial age disturbed by later metamorphism"		
603	1	1407.87	80		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	CO5	0.0000147*	256	124	1.46		0.8243	N			age of intrusion		
604	1	1677.02	320		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR1	0.0000147*	96.1	306	0.67		0.7251	N			age of intrusion		REPLICATE RB VALUE IS 95.5 PPM
606	1	1480.34	100		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR4	0.0000147*	134	102	0.81		0.7846	N			age of intrusion		REPLICATE VALUES ARE 131 PPM FOR RB AN 102 PPM FOR SR
608	1	1480.34	70		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR6	0.0000147*	349	70.3	2.1			N			age of intrusion		
609	1	1687.38	130		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR7	0.0000147*	207	216	1.41		0.7704	N			age of intrusion		
610	1	1749.49	140		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR8	0.0000147*	78.1	87.6	0.56		0.7683	N			age of metamorphic crystallization		
611	1	327.12	20		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR9	0.0000147*	351	14.8	0.46			N			age not evaluated		
611	2				whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR9	0.0000147*	24.7	175			0.7054	N			age not evaluated		AGE PUBLISHED AS 200 TO 1000 M.Y.
611	3				K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR9	0.0000147*	1.8	289			0.7024	N			age not evaluated		AGE PUBLISHED AS 200 TO 1000 M.Y.
613	1	1014.5	60		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR12	0.0000147*	175	67.9	0.72		0.8122	N			initial age disturbed by later metamorphism		REPLICATE VALUES ARE 172 PPM FOR RB AND 64.9 PPM FOR SR
614	1	1645.97	170		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR13	0.0000147*	171	281	1.15		0.7451	N			age of intrusion		
615	1	1635.62	100		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR14	0.0000147*	295	219	1.97		0.7957	N			age of intrusion		
619	1	1821.95	150		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR18	0.0000147*	150	197	1.11		0.7613	N			age of metamorphic crystallization		REPLICATE VALUES ARE 149 PPM FOR RB AND 191 PPM FOR SR
621	1	1542.45	230	0.703	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR20	0.0000147*	122	265	0.77		0.7328	N			age of intrusion		
622	1	1542.45	230	0.703	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR22	0.0000147*	117	247	0.74		0.7337	N			age of intrusion		
623	1	828.16	80		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR23	0.0000147*	63.3	50.3	0.21		0.7469	N			age not evaluated		
624	1	1200.83	220		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR24	0.0000147*	66.6	261	0.32		0.7158	N			initial age disturbed by later metamorphism		
624	2				K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR24	0.0000147*	15.9	471			0.7057	N					
625	1	1200.83	60		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR25	0.0000147*	292	17.8	1.42			N			initial age disturbed by later metamorphism		
625	2				K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR25	0.0000147*	17.7	272			0.7135	N					
627	1	1532.1	190	0.703	K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NR27	0.0000147*	287	463	1.78		0.7427	N			age of intrusion		
629	1	1345.76	70		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	WI2	0.0000147*	263	56.1	1.44			N			age meaning uncertain (geologic factors)		
630	1	1542.45	70		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	WI3	0.0000147*	120	26.7	0.75			N			age of intrusion		
632	1	1521.74			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	MO1	0.0000147*									minimum age of intrusion		ANALYTICAL WORK DONE BY M.N. BASS BUT NOT REPORTED IN ARTICLE
633	1	1149.07	80		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	MO2	0.0000147*	266	147	1.24		0.817	N			age of intrusion		
635	1	1511.39	70		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	MO4	0.0000147*	215	36	1.32			N			age of intrusion		
637	1	1376.82	70		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	MO6	0.0000147*	295	4.9	1.65			N			age of intrusion		
638	1	1304.35	60		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	MO7	0.0000147*	294	10.6	1.56			N			age of volcanism		
639	1	1335.41	60		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	MO8	0.0000147*	190	32.2	1.03			N			age of volcanism		
640	1	1356.11	70		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	MO9	0.0000147*	278	108	1.53		0.849	N			age of intrusion		
641	1	1159.42			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	MO10	0.0000147*									age not evaluated		NO ANALYTICAL DATA GIVEN
642	1	1252.59			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	MO11	0.0000147*									age not evaluated		NO ANALYTICAL DATA GIVEN
643	1	1231.89	60		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	MO12	0.0000147*	326	20.1	1.64			N			age of intrusion		
644	1	1262.94	70		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	MO13	0.0000147*	146	65.7	0.74			N			age of intrusion		
645	1	1376.82	80		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	MO14	0.0000147*	149	75.4	0.83		0.8166	N			age of volcanism		
646	1	1573.5	90		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	MO15	0.0000147*	221	89.5	1.42		0.8652	N			minimum age of intrusion		VALUES ARE AVERAGES OF TWO DETERMINATIONS
647	1	1418.22	80		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	MO16	0.0000147*	286	133	1.65		0.8305	N			age not evaluated		
651	1	1563.15	100		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA2	0.0000147*	254	160	1.61		0.8059	N			age of intrusion		
652	1	1459.63	110		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA3	0.0000147*	388	338	2.31		0.7727	N			age of intrusion		
653	1	1262.94	70		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA4	0.0000147*	641	206	3.28			N			age of intrusion		
654	1	1469.98	110		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA5	0.0000147*	212	176	1.27		0.7768	N			age of intrusion		
655	1	1397.52	140		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA9	0.0000147*	119	158	0.67		0.747	N			age meaning uncertain (geologic factors)		
656	1	1532.1	100	0.703	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA11	0.0000147*	332	247	2.07		0.7887	N			age of intrusion		
657	1	1656.32	80		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA13	0.0000147*	288	93	1.94		0.9182	N			age of intrusion		
658	1	2018.64	170		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA14	0.0000147*	121	176	0.99		0.7613	N			age of metamorphic crystallization		
659	1	1397.52	70		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA15	0.0000147*	458	136	2.6			N			age of intrusion		
660	1	1366.46	170		microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA16	0.0000147*	85.1	126	0.47		0.7413	N			age of metamorphic crystallization		
661	1	1604.56	100		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA17	0.0000147*	174	122	1.13		0.7977	N			age not evaluated		
662	1	1884.06	120		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA18	0.0000147*	164	137	1.25		0.7974	N			age of intrusion		
663	1	1449.28	90		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA21	0.0000147*	14.5	8.16	0.09		0.8105	N			age not evaluated		
664	1	1469.98	80		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA22	0.0000147*	252	106	1.5		0.8475	N			age not evaluated		
665	1	1501.04	90		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA23	0.0000147*	273	159	1.67		0.81	N			age not evaluated		
666	1	1449.28	90		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA24	0.0000147*	239	154	1.41		0.7969	N			age not evaluated		
667	1	1231.89	60		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA25	0.0000147*	624	101	3.11			N			age of intrusion		
667	2	1283.65	160		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA25	0.0000147*	188	288	0.98		0.7379	N			age of intrusion		
668	1	1397.52	70		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA26	0.0000147*	373	101	2.11		0.9183	N			age of intrusion		
669	1	1387.17	120		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA27	0.0000147*	225	243	1.26		0.7561	N			age not evaluated		VALUES GIVEN ARE AVERAGES OF TWO DETERMINATIONS
670	1	1262.94	70	0.705	K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA28	0.0000147*	247	75.2	1.27		0.8779	N			age of intrusion		
671	1	1304.35	70		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA29	0.0000147*	217.3	50.2	1.15			N			age of intrusion		
672	1	1335.41	60		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OK1	0.0000147*	571	13.7	3.08			N			age of intrusion		
673	1	1262.94	70		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OK2	0.0000147*	378	156	1.93		0.8308	N			age of intrusion		
674	1	1314.7	80	0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OK3	0.0000147*	197	97	1.05		0.8148	N			age of intrusion		
675	1	1221.54	60	0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OK4	0.0000147*	219	59.3	1.08		0.8916	N			age of intrusion		
676	1	1283.65	70	0.705	K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OK5	0.0000147*	212	78.6	1.11			N			age of intrusion		
677	1	1190.48	60	0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OK6	0.0000147*	195	32.9	0.94			N			age of intrusion		
678	1	1231.89	60	0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OK7	0.0000147*	219	56.1	1.09		0.9038	N			age of intrusion		
679	1	1200.83	50	0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OK8	0.0000147*	486	13.7	2.37		2.485	N			age of intrusion		
680	1	1273.3	110	0.705	K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OK9	0.0000147*	186	163	0.95		0.7633	N			age of intrusion
681	1	1325.06	80	0.705	K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OK10	0.0000147*	282	151	1.52		0.807	N			age of intrusion
682	1	1273.3	130	0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OK11	0.0000147*	150	167	0.77		0.7507	N			age of intrusion
683	1	1242.24	70	0.705	K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OK12	0.0000147*	390	180	1.97		0.8156	N			age of intrusion
684	1	1190.48	150	0.705	K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OK13	0.0000147*	296	274	0.99		0.7405	N			age of metamorphic crystallization
685	1	1294	120	0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OK14	0.0000147*	283	296	1.49		0.7545	N			age of intrusion
686	1	1407.87	140		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OK15	0.0000147*	201	247	1.15		0.7507	N			age of intrusion
687	1	496.9	50		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OK16	0.0000147*	113	56.4	0.23		0.7447	N			age of intrusion
688	1	486.54	130		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OK17	0.0000147*	146	176	0.29		0.7198	N			age of intrusion
689	1	1086.96	60		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OK18	0.0000147*	229	74.1	1.01		0.8438	N			"minimum age of intrusion, initial age disturbed by later metamorphism"
690	1	527.95	110		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OK19	0.0000147*	102	104	0.21		0.7243	N			age of intrusion
692	1	1221.54	90		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	TX1	0.0000147*	201	150	1		0.7719	N			age of intrusion
694	1	1180.13	90		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	TX3	0.0000147*	254	183	1.21		0.7709	N			age of intrusion
695	1	569.36	80		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	TX6	0.0000147*	101	95.3	0.23		0.7282	N			age of intrusion
696	1	1169.78	70		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	TX7	0.0000147*	151	81.6	0.72		0.794	N			age of intrusion
697	1	1138.72	80		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	TX8	0.0000147*	189	112	0.87		0.7828	N			age of intrusion
699	1	1366.46	90		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	TX13	0.0000147*	147	87.4	0.82		0.7997	N			age of intrusion		
700	1	1180.13	60		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	TX14	0.0000147*	212	58.4	1.01			N			"minimum age of intrusion, initial age disturbed by later metamorphism"		
701	1	1086.96	80		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	TX15	0.0000147*	153	99	0.67			N			age of metamorphic crystallization		
702	1	1035.2	50		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	TX16	0.0000147*	550	73.9	2.31			N			minimum age of intrusion		
703	1	1314.7	100		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	TX20	0.0000147*	130	98.8	0.7		0.7757	N			age of metamorphic crystallization		
704	1	590.06	120		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	TX22	0.0000147*	94	96.6	0.22		0.7268	N			age not evaluated		
705	1	1024.85	50		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	TX23	0.0000147*	246	24.3	1.02			N			minimum age of intrusion		
706	1	1314.7	60		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NM1	0.0000147*	657	8.88	3.5			N			age of intrusion		
707	1	1397.52	90		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NM2	0.0000147*	460	292	2.6		0.7948	N			age of intrusion		
708	1	1666.67	100		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NM3	0.0000147*	147	84.9	0.99		0.8218	N			age of intrusion	VALUES SHOWN ARE AVERAGE OF TWO DETERMINATIONS	VALUES SHOWN ARE AVERAGE OF TWO DETERMINATIONS
709	1	1138.72	60		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NM4	0.0000147*	124	31.4	0.57			N			age of intrusion		
710	1	1625.26	100		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NM5	0.0000147*	286	182	1.9		0.8104	N			age of metamorphic crystallization		
711	1	1345.76	70		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NM6	0.0000147*	394	86.6	2.16			N			age of intrusion		
712	1	1480.34	70		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NM7	0.0000147*	221	42.5	1.33			N			minimum age of intrusion		
714	1	1304.35	70		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NM9	0.0000147*	210	44	1.12			N			age of intrusion		
715	1	1407.87	140		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NM10	0.0000147*	176	240	1.01		0.7463	N			age of metamorphic crystallization		
717	1	1387.17	90		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NM14	0.0000147*	222	151	1.25		0.7885	N			minimum age of metamorphic crystallization			
718	1	1273.3	70		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NM15	0.0000147*	102	46.9	0.53			N			initial age disturbed by later metamorphism			
719	1	1200.83	60		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NM17	0.0000147*	435	39.6	2.12			N			initial age disturbed by later metamorphism			
719	2	1397.52	80		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NM17	0.0000147*	185	75.3	1.05		0.8472	N			age of intrusion			
720	1	1211.18	60		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NM19	0.0000147*	299	74.1	1.47			N			minimum age of intrusion			
721	1	1138.72	60		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NM20	0.0000147*	338	31.2	1.56			N			minimum age of metamorphic crystallization			
722	1	1749.49	90		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	CO6	0.0000147*	244	101	1.74		0.8809	N			minimum age of intrusion			
723	1	1345.76	60		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	CO7	0.0000147*	374	31.4	12.04			N			initial age disturbed by later metamorphism			
724	1	1656.32	80		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	CO8	0.0000147*	155	55.9	11.05		0.8962	N			minimum age of metamorphic crystallization			
726	1	1325.06	80		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	CO10	0.0000147*	275	134	1.48		0.817	N			age of intrusion			
727	1	1873.71	60		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	CO11	0.0000147*									age of intrusion		NO ANALYTICAL DATA GIVEN IN THIS OR ORIGINAL REFERENCE	
728	1	1521.74	70		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	UT1	0.0000147*	914	12	5.63			N			age not evaluated			
729	1	1573.5	190		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	UT2	0.0000147*	346	632	2.21		0.7391	N			age not evaluated			
732	1	1356.11	130		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IA1	0.0000147*	381	125	2.1			N			age of intrusion			NORITE(IA1) INTRUDES GRANITE(IA2)
733	1	1325.06	70		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IA2	0.0000147*	526	71.9	2.82			N			initial age disturbed by later metamorphism			
734	1	1169.78			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IA3	0.0000147*									minimum age of metamorphic crystallization		NO ANALYTICAL INFORMATION GIVEN	
735	1	1107.66			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IA4	0.0000147*									minimum age of metamorphic crystallization		NO ANALYTICAL INFORMATION GIVEN
736	1	1169.78	110		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IA5	0.0000147*									minimum age of intrusion		NO ANALYTICAL INFORMATION GIVEN
737	1	1407.87			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IA6	0.0000147*									age of intrusion		NO ANALYTICAL INFORMATION GIVEN
738	1	1304.35			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IA7	0.0000147*									age of intrusion		NO ANALYTICAL INFORMATION GIVEN
739	1	1283.65			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IA8	0.0000147*									minimum age of intrusion		NO ANALYTICAL INFORMATION GIVEN
739	2	1273.3			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IA8	0.0000147*									minimum age of intrusion		
740	1	1128.37			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IA9	0.0000147*									minimum age of metamorphic crystallization		NO ANALYTICAL INFORMATION GIVEN
741	1	1304.35			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IL1	0.0000147*									age not evaluated		NO ANALYTICAL INFORMATION GIVEN
742	1	931.68			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IL2	0.0000147*									age not evaluated		NO ANALYTICAL INFORMATION GIVEN
743	1	621.12			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IL3	0.0000147*									age meaning uncertain (geologic factors)		NO ANALYTICAL INFORMATION GIVEN
744	1	1180.13	60		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IL4	0.0000147*	817	10.6	3.9			N			age not evaluated		
744	2	1149.07			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IL4	0.0000147*									age not evaluated		NO ANALYTICAL INFORMATION GIVEN
745	1	1242.24			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IL5	0.0000147*									age not evaluated		NO ANALYTICAL INFORMATION GIVEN
746	1	1418.22	80		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IL6	0.0000147*	307	148	1.77		0.825	N			minimum age of intrusion		
747	1	1273.3			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IL7	0.0000147*									age not evaluated		NO ANALYTICAL INFORMATION GIVEN.
748	1	1387.17	80		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IN1	0.0000147*	322	119	1.82		0.8594	N			minimum age of intrusion		
749	1	1283.65	70		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IN2	0.0000147*	297	126	1.55		0.8292	N			age of intrusion			
750	1	1128.37	50		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IN3	0.0000147*	288	44.4	1.32			N			age of intrusion			MAY BE SYNCHRONOUS WITH DULUTH GABBRO COMPLEX AT 1100 M.Y.
751	1	1118.02	50		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IN4	0.0000147*	337	40.8	1.53			N			age of intrusion			MAY BE SYNCHRONOUS WITH DULUTH GABBRO COMPLEX AT 1100 M.Y.
752	1	1076.61	50		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	IN1	0.0000147*									age of intrusion		AGE MADE AVAILABLE BY COURTESY OF G. J. WASSERBURG.  NO ANALYTICAL INFORMATION GIVEN	PROBABLY EQUIVALENT TO DULUTH GABBRO COMPLEX
753	1	931.68			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	MI2	0.0000147*									minimum age of metamorphic crystallization		NO ANALYTICAL INFORMATION GIVEN	
754	1	869.57			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	MI3	0.0000147*									initial age disturbed by weathering		NO ANALYTICAL INFORMATION GIVEN	WEATHERING MAY HAVE OCCURRED DURING LATE CAMBRIAN TIME
755	1	952.38			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	MI4	0.0000147*									age not evaluated		NO ANALYTICAL INFORMATION GIVEN	
756	1	931.68			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OH1	0.0000147*									minimum age of metamorphic crystallization		NO ANALYTICAL INFORMATION GIVEN	
757	1	921.33			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OH2	0.0000147*									minimum age of metamorphic crystallization		NO ANALYTICAL INFORMATION GIVEN	
758	1	900.62			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OH3	0.0000147*									minimum age of metamorphic crystallization		NO ANALYTICAL INFORMATON GIVEN	
759	1	1325.06	70		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OH4	0.0000147*	243	102	1.3		0.8335	N			age of volcanism			
760	1	1283.65	120		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OH5	0.0000147*	75	73	0.39		0.7576	N			age of volcanism			
761	1	890.27	40		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OH7	0.0000147*	637	13.2	2.31			N			minimum age of intrusion			
762	1	931.68			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OH8	0.0000147*									minimum age of metamorphic crystallization	BIOTITE FROM 4190-4215 FOOT INTERVAL	NO ANALYTICAL INFORMATON GIVEN	
762	2	931.68			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OH8	0.0000147*									minimum age of metamorphic crystallization		NO ANALYTICAL INFORMATON GIVEN	
763	1	921.33			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OH9	0.0000147*								Bass (1960)	age of metamorphic crystallization		NO ANALYTICAL INFORMATON GIVEN	
763	2	962.74			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OH9	0.0000147*								Bass (1960)	minimum age of metamorphic crystallization		NO ANALYTICAL INFORMATION GIVEN	
764	1	910.98			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OH10	0.0000147*								Bass (1960)	age not evaluated		NO ANALYTICAL INFORMATION GIVEN	
765	1	848.86	40		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	WV1	0.0000147*	348	0.8	1.21			N		Bass (1960)	minimum age of metamorphic crystallization			AGE MAY HAVE BEEN LOWERED BY PALEOZOIC DEFORMATION
804	1	959.32	50		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	7	0.0000139*	755.7		2.94					Lidiak and others (1966)	age of metamorphic crystallization			
804	2	920.17	50		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	7	0.0000139*	416.8		1.55					Lidiak and others (1966)	age of metamorphic crystallization			
805	1	910.38	50		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8	0.0000139*	379.6		1.4					Lidiak and others (1966)	age of metamorphic crystallization			
806	1	851.64	40		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NOT GIVEN	0.0000139*	348.1		1.21					Lidiak and others (1966)	age of metamorphic crystallization			
807	1	1810	60		orthoclase	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	not given								Muehlberger and others (1966)	age of intrusion		NO ANALYTICAL DATA GIVEN	
896	1	2603.53	62	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-6	0.0000147*	72.9	137.6		1.531	0.7563	N	31		age of intrusion			
896	2	2627.34	58	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-6	0.0000147*	72.9	137.6		1.531	0.7563	N	18		age of intrusion			
897	1	2603.53	62	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-7	0.0000147*	1.01	107.1		0.02702	0.7036	N	31		age of intrusion		87SR/86SR = 0.7035 (UNSPIKED CHECK ANALYSIS)	
897	2	2627.34	58	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-7	0.0000147*	1.01	107.1		0.02702	0.7036	N	18		age of intrusion		87SR/86SR = 0.7035 (UNSPIKED CHECK ANALYSIS)	
900	1	2603.53	62	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-20	0.0000147*	55.3	156.3		1.024	0.7373	N	31		age of intrusion			
900	2	2627.34	58	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-20	0.0000147*	55.3	156.3		1.024	0.7373	N	18		age of intrusion			
902	1	1280.54	77	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-27	0.0000147*	31	303.4		0.296	0.7109	N	19		age of intrusion			
902	2	1280.54	77	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-27	0.0000147*	31	305.5		0.294	0.7104	N	19		age of intrusion			
903	1	1280.54	77	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-28	0.0000147*	43.5	304.1		0.414	0.7128	N	19		age of intrusion		
904	1				non-mineral substance		MBT-29	1.47E-05	31	116		0.766	0.7431	N					NO AGE CALCULATED. 87SR/86SR = 0.7427 (UNSPIKED CHECK ANALYSIS.
905	1				whole rock		MBT-30	1.47E-05	38	181			0.7136	T					
907	1	1280.54	77	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-32	0.0000147*	32.5	307.2		0.306	0.7104	N	19		age of intrusion		
909	1	2603.53	62	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-34	0.0000147*	15.2	118.7		0.371	0.7147	N	31		age of intrusion		
909	2	2627.34	58	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-34	0.0000147*	15.2	118.7		0.371	0.7147	N	18		age of intrusion		
912	1	1280.54	77	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-37A	0.0000147*	32	323.7		0.286	0.7104	N	19		age of intrusion		
916	1	2603.53	62	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-41	0.0000147*	17.7	172.9		0.296	0.713	N	31		age of intrusion		
916	2	2627.34	58	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-41	0.0000147*	17.7	172.9		0.296	0.713	N	18		age of intrusion		
921	1	2603.53	62	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-48	0.0000147*	16.2	154.5		0.304	0.7133	N	31		age of intrusion		
921	2	2627.34	58	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-48	0.0000147*	16.2	154.5		0.304	0.7133	N	18		age of intrusion		
926	1	2603.53	62	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-57	0.0000147*	16.1	118.4		0.393	0.715	N	31		age of intrusion		
926	2	2627.34	58	0.7024	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MBT-57	0.0000147*	16.1	118.4		0.393	0.715	N	18		age of intrusion		
927	1	1527.08			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	14	0.0000139*									minimum age of intrusion		NO ANALYTICAL DATA GIVEN.
927	2	1517.3			whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	14	0.0000139*									minimum age of intrusion		NO ANALYTICAL DATA GIVEN.
928	1	1595.61			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	15	0.0000139*									minimum age of intrusion		NO ANALYTICAL DATA GIVEN.
928	2	1536.87			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	15	0.0000139*									minimum age of intrusion		NO ANALYTICAL DATA GIVEN.	
929	1	1771.81			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	16	0.0000139*									minimum age of intrusion		NO ANALYTICAL DATA GIVEN.	
929	2	1585.82			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	16	0.0000139*									age not evaluated			
929	3	1624.97			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	16	0.0000139*									age not evaluated		NO ANALYTICAL DATA GIVEN.	
930	1	1585.82			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	17	0.0000139*									minimum age of intrusion			
931	1	1664.13			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	18	0.0000139*									minimum age of intrusion		NO ANALYTICAL DATA GIVEN.	
931	2	1605.4			microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	18	0.0000139*									minimum age of intrusion		NO ANALYTICAL DATA GIVEN.	
932	1	1546.66			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	19	0.0000139*									minimum age of intrusion		NO ANALYTICAL DATA GIVEN.	
933	1	1585.82			lepidolite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	20	0.0000139*								Carr and Kulp (1957)	minimum age of intrusion		NO ANALYTICAL DATA GIVEN.	
1024	1	1566.24			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*								Aldrich and others (1958)			NO ANALYTICAL DATA GIVEN	AGE CALCULATED WITH OBSOLETE DECAY CONSTANT
1025	1	1615.19			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*								Aldrich and others (1958)			NO ANALYTICAL DATA GIVEN	AGE CALCULATED WITH OBSOLETE DECAY CONSTANTS
1027	1	1850.12	100		lepidolite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*			70					Aldrich and others (1958)			SPARSE ANALYTICAL DATA. RB-87 = 3280 +/- 60 PPM	AGE CALCULATED WITH OBSOLETE DECAY CONSTANT
1028	1	1615.19	100		lepidolite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*			40.4					Aldrich and others (1958)			SPARSE ANALYTICAL DATA. RB-87 = 2180 +/- 50 PPM	AGE CALCULATED WITH OBSOLETE DECAY CONSTANT
1028	2	1566.24	100		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*			31.8					Aldrich and others (1958)			SPARSE ANALYTICAL DATA. RB-87 = 1760 +/- 20 PPM	AGE CALCULATED WITH OBSOLETE DECAY CONSTANT
1029	1	1742.44	100		lepidolite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*			137					Aldrich and others (1958)			SPARSE ANALYTICAL DATA. RB-87  = 6750 +/- 100 PPM	AGE CALCULATED WITH OBSOLETE DECAY CONSTANT
1034	1	2486.41	40	0.7036	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	L12	0.0000139*	170	149		3.33	0.8239		32		age of metamorphic crystallization			
1035	1	2486.41	40	0.7036	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	L13	0.0000139*	133	254		1.52	0.7581		32		age of metamorphic crystallization			
1036	1	2486.41	40	0.7036	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	L22	0.0000139*	27.5	432		0.184	0.7097		32		age of metamorphic crystallization			
1037	1	2486.41	40	0.7036	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	L15	0.0000139*	78.2	399		0.568	0.7236		32		age of metamorphic crystallization			
1038	1	2486.41	40	0.7036	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	L14	0.0000139*	139	127		3.22	0.8221		32		age of metamorphic crystallization			
1039	1	2486.41	40	0.7036	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	L27	0.0000139*	271	73		11.15	1.102		32		age of metamorphic crystallization			
1040	1				whole rock		L28	0.0000139*	141	56.6		7.35	0.9323						NO AGE CALCULATED	
1041	1	2486.41	40	0.7036	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	L29	0.0000139*	166	141		3.44	0.8259		32		age of metamorphic crystallization			
1042	1	2486.41	40	0.7036	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	L32	0.0000139*	228	83.3		8.16	0.997		32		age of metamorphic crystallization			
1069	1	53.83	6		glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-3214	0.0000147*	260	11.5	0.06			T			minimum age of volcanism			
1070	1	403.73	60		glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-3210	0.0000147*	193	10.6	0.31			T						AGE IS TOO YOUNG
1071	1	427.54	20		glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-3219	0.0000147*	196	10.8	0.34			T						AGE IS TOO YOUNG
1072	1	69.36	11		glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-3220	0.0000147*	221	16.9	0.06			T			age of volcanism			
1073	1	57.97	6		glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-3221	0.0000147*	240	10.3	0.06			T			maximum age of volcanism			
1074	1	384.06	30		glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-3222	0.0000147*	230	40.8	0.35			T						AGE IS TOO YOUNG
1075	1	401.66	30		glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-3223	0.0000147*	204	43	0.33			T						AGE IS TOO YOUNG
1076	1	571.43	30		glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-3227	0.0000147*	171	28.4	0.39			T			age of volcanism			
1080	1	313.67	13		glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-3268	0.0000147*	309	39.2	0.39			T						AGE IS TOO YOUNG
1082	1	448.24	11		glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-3280 (2)	0.0000147*	227	8.6	0.41			T				GLAUCONITE LEACHED WITH 25% ACETIC ACID FOR 24 HOURS BEFORE ANALYSIS		AGE IS TOO YOUNG
1082	2	443.07	10		glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-3280 (4)	0.0000147*	227	12.6	0.4			T				GLAUCONITE HEATED AT 100 DEGREES C IN AIR FOR 24 HOURS BEFORE ANALYSIS		AGE IS TOO YOUNG
1082	3	445.14	10		glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-3280 (5)	0.0000147*	224	12.2	0.4			T				99% GLAUCONITE		AGE IS TOO YOUNG
1084	1	435.82	13		glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-3282	0.0000147*	221	5.6	0.4			T						AGE IS TOO YOUNG
1086	1	477.23	40		glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-3286	0.0000147*	244	9.5	0.47			T						AGE TOO YOUNG
1097	1	1614.91	60		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	BC 7601	0.0000147*	529	54.3	3.47			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.44 MM	POTASSIUM CONTENT IS 7.33% K	SAMPLE COLLECTED 2.9 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1098	1	1035.2	40		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	BC 7600	0.0000147*	511	11.2	2.14			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.86 MM	POTASSIUM CONTENT IS 6.72% K	AGE IS CLOSE TO AGE OF DULUTH GABBRO; SAMPLE COLLECTED 1.5 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1099	1	1076.61	40		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	BC 7442	0.0000147*	256	51.2	1.12			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.35 MM		AGE IS PROBABLY AGE OF DULUTH GABBRO; SAMPLE COLLECTED 1.9 KM FROM INFERRED DULUTH GABBRO  SNOWBANK STOCK CONTACT.
1100	1	1138.72	40		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	BC7627	0.0000147*	439	100	2.03			N			initial age disturbed by later metamorphism	MEAN GRAIN SIZE DIAMETER IS 0.21 MM		AGE IS CLOSE TO AGE OF DULUTH GABBRO; SAMPLE COLLECTED 1.2 KM FROM INFERRED DULUTH GABBRO-KNIFE LAKE METASEDIMENT CONTACT.
1101	1	1159.42	40		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	BC 7749	0.0000147*	338	34.4	1.59			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.16 MM	POTASSIUM CONTENT IS 6.91% K	AGE IS CLOSE TO AGE OF DULUTH GABBRO; SAMPLE WAS COLLECTED 1.5 KM FROM INFERRED DULUTH GABBRO-KNIFE LAKE METASEDIMENT CONTACT.
1102	1	1200.83	50		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA 106	0.0000147*	724	41	3.51			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.34 MM		AGE IS CLOSE TO AGE OF DULUTH GABBRO; SAMPLE COLLECTED 2.0 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT.
1103	1	2536.24	100		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA 229	0.0000147*	374	105	3.89			N			minimum age of intrusion	MEAN GRAIN SIZE DIAMETER IS 0.13 MM		SAMPLE COLLECTED 4.8 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1104	1	1656.32	60		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA 323	0.0000147*	240	25.4	1.61			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.29 MM	POTASSIUM CONTENT IS 6.57% K	SAMPLE COLLECTED FROM  3.0 KM FROM INFERRED DULUTH GABBRO-KNIFE LAKE METASEDIMENT CONTACT.
1105	1	2267.09	90		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M5231	0.0000147*	489	40.5	4.53			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.33 MM	POTASSIUM CONTENT IS 4.63% K	SAMPLE COLLECTED 2.2 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1106	1	1563.15	60		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M5236	0.0000147*	618	26.9	3.91			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.31 MM	POTASSIUM CONTENT IS 5.37% K	SAMPLE COLLECTED 2.2 KM FROM INFERRED DULUTH GABBR0-SNOWBANK STOCK CONTACT
1107	1	2443.07	90		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M 5237	0.0000147*	620	34.3	6.2			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.92 MM	POTASSIUM CONTENT IS 7.78% K	SAMPLE COLLECTED 2.7 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1107	2	2339.55	90		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M5237	0.0000147*	616	35.7	5.88			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.53 MM	POTASSIUM CONTENT IS 7.77% K	SAMPLE COLLECTED 2.7 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1108	1	2080.75	80		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M 5238A	0.0000147*	514	44.2	4.36			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.34 MM		SAMPLE COLLECTED 3.0 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1109	1	2236.03	90		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M 5240A	0.0000147*	429.5	161	3.87			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 1.8 MM	RUBIDIUM VALUE IS AVERAGE OF 424 AND 435 PPM	SAMPLE COLLECTED 2.9 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1109	2	2236.03	90		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M 5240A	0.0000147*	474	37.9	4.34			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.95 MM		SAMPLE COLLECTED 2.9 KM FROM INFERRED DULUTH GABBRO-SNOWBAMK STOCK CONTACT
1109	3	1987.58	80		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M 5240A	0.0000147*	483	29.9	3.9			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.41 MM		SAMPLE COLLECTED 2.9 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1109	4	1718.43	70		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M 5240A	0.0000147*	439	36.3	3.07			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.17 MM		SAMPLE COLLECTED 2.9 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1110	1	2380.96	90		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M 5237	0.0000147*	589.5	39.2	5.72			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.53 MM	RUBIDIUM VALUE IS AVERAGE OF 586 AND 593 PPM	SAMPLE COLLECTED 3.5 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1110	2				Unk			0.0000147*												
1111	1	2256.74	90		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M 5244	0.0000147*	387	39.8	3.56			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.43 MM	POTASSIUM CONTENT IS 6.07% K	SAMPLE COLLECTED 3.6 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1112	1	2225.68	90		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M 5245	0.0000147*	389	37.2	3.54			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.43 MM	POTASSIUM CONTENT IS 6.75% K	SAMPLE COLLECTED 3.8 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1113	1	2412.02	90		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M 5250	0.0000147*	637	31.8	6.27			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.38 MM	POTASSIUM CONTENT IS 7.55% K	SAMPLE COLLECTED 3.1 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1114	1	1149.07	40		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M5252	0.0000147*	502	32.1	2.33			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.40 MM		SAMPLE COLLECTED 2.1 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1114	2	1863.36	70		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M5252	0.0000147*	311	197	2.36			N			initial age disturbed by later metamorphism			SAMPLE COLLECTED 2.1 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1115	1	1076.61	40		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M5254	0.0000147*	466	48.7	2.03			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.36 MM		AGE IS PROBABLY AGE OF DULUTH GABBRO;  SAMPLE COLLECTED 0.06 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1116	1	1573.5	60		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M5299	0.0000147*	290.5	13	1.86			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.26 MM	RUBIDIUM VALUE IS AVERAGE OF 295 AND 286 PPM	SAMPLE COLLECTED 2.7 KM FROM INFERRED DULUTH GABBRO-KNIFE LAKE METASEDIMENT CONTACT
1116	2	1749.49	70		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M5299B	0.0000147*	288	72.5	2.05			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.28 MM		SAMPLE COLLECTED 2.7 KM FROM INFERRED DULUTH GABBRO-KNIFE LAKE METASEDIMENT CONTACT
1116	3	1325.06	50		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M5299G	0.0000147*	221.5	25.4	1.19			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.12 MM	RUBIDIUM VALUE IS AVERAGE OF 226 AND 217 PPM	SAMPLE COLLECTED 2.7 KM FROM INFERRED DULUTH GABBRO-KNIFE LAKE METASEDIMENT CONTACT
1117	1	2080.75	80		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M7001	0.0000147*	702	89.8	5.97			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.80 MM		SAMPLE COLLECTED 2.4 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1118	1	1718.43	70		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M7003	0.0000147*	589	50.6	4.11			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.80 MM		SAMPLE COLLECTED 2.2 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1119	1	1677.02	60		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M7007	0.0000147*	369	77.2	2.52			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.38 MM		SAMPLE COLLECTED 2.3 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1120	1	2008.29	80		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M7011	0.0000147*	601	59.4	4.92			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.55 MM		SAMPLE COLLECTED 2.6 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1121	1	1407.87	50		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M7018	0.0000147*	365	52.4	2.08			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.54 MM	RUBIDIUM VALUE IS AVERAGE OF 372 AND 358 PPM	SAMPLE COLLECTED 2.1 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1122	1	1200.83	50		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M7019	0.0000147*	677	65.7	3.3			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.79 MM		SAMPLE COLLECTED 1.9 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1124	1	1749.49	70		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M7032	0.0000147*	276	48.1	1.97			N			initial age disturbed by later metamorphism	MEAN GRAIN DIAMETER IS 0.32 MM	POTASSIUM CONTENT IS 3.66% K	SAMPLE COLLECTED 2.1 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1126	1	2660.46	100		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M7058	0.0000147*	566	36	6.16			N			age of intrusion	MEAN GRAIN DIAMETER IS 0.34 MM		SAMPLE COLLECTED 5.0 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1127	1	2629.41	100		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M7031B	0.0000147*	753	52.1	8.1			N			minimum age of intrusion			SAMPLE COLLECTED 1.75 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1128	1	2577.65	100		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M7045A	0.0000147*	275	52.6	2.9			N			minimum age of intrusion			SAMPLE COLLECTED 5.0 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1129	1	2650.11	100		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M7046	0.0000147*	692	10.8	7.5			N			age of intrusion			SAMPLE COLLECTED 4.3 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1129	2	2525.89	100		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M7046	0.0000147*	191	150	1.98			N			initial age disturbed by later metamorphism		RUBIDIUM VALUE IS AVERAGE OF 190 AND 192 PPM	SAMPLE COLLECTED 4.3 KM FROM INFERRED DULUTH GABBRO-SNOWBANK STOCK CONTACT
1131	1	1987.58	80		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M7061	0.0000147*	691	122	5.61			N			initial age disturbed by later metamorphism			SAMPLE COLLECTED 1.25 KM FROM INFERRED DULUTH GABBRO OVERHEAD CONTACT
1156	1	1853.01	220	0.703	K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	3798	0.0000147*	267		2.02						minimum age of metamorphic crystallization		RB VALUE DERIVED FROM RB-87 VALUE OF 75.6 PPM;  INITIAL STRONTIUM RATIO IS ASSUMED	
1157	1	962.74		0.703	K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	4679	0.0000147*	230		0.9						minimum age of intrusion		AGE AND STRONTIUM VALUES ARE APPROXIMATE; RB VALUE DERIVED FROM RB-87 VALUE OF 65.1 PPM
1158	1	538.3	30	0.703	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	BT-85	0.0000147*	452		0.99						age not evaluated		RB VALUE DERIVED FROM RB-87 VALUE OF 128 PPM; INITIAL STRONTIUM RATIO IS ASSUMED
1158	2	538.3	30	0.703	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	BT-85	0.0000147*	452		0.99						age not evaluated		RB VALUE DERIVED FROM RB-87 VALUE OF 128 PPM; INITIAL STRONTIUM RATIO IS ASSUMED
1159	1	1604.56	80	0.703	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	BT-86	0.0000147*	661		4.32						minimum age of intrusion		RB VALUE DERIVED FROM RB-87 VALUE OF 187 PPM; INITIAL STRONTIUM RATIO IS ASSUMED
1160	1	1759.84	150	0.703	K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	4678	0.0000147*	463		3.32						minimum age of metamorphic crystallization		RB VALUE DERIVED FROM RB-87 VALUE OF 131 PPM; INITIAL STRONTIUM IS ASSUMED
1161	1	2215.33	130	0.703	K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	4680	0.0000147*	364		3.29						minimum age of intrusion		RB VALUE DERIVED FROM RB-87 VALUE OF 103 PPM; INITIAL STRONTIUM RATIO IS ASSUMED
1252	1				lepidolite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	31	1.19E-11; 0.272 gm/gm						T			"age meaning uncertain (analysis questionable), age not evaluated"		AGE LISTED AS 620-700 M.Y.
1253	1	2512.84	25	0.7026	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-8A	0.0000139*	161	284		1.65	0.7614	T	33		age of intrusion		EIGHT-POINT WHOLE-ROCK ISOCHRON
1254	1	2512.84	25	0.7026	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-8B	0.0000139*	54.9	601		0.265	0.7127	T	33		age of intrusion		EIGHT-POINT WHOLE-ROCK ISOCHRON
1255	1	2512.84	25	0.7026	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-8D	0.0000139*	175	336		1.22	0.7453	T	33		age of intrusion		AN EIGHT-POINT WHOLE-ROCK ISOCHRON
1256	1	2512.84	25	0.7026	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-23	0.0000139*	125	96.9		3.79	0.8448	T	33		age of intrusion		AN EIGHT-POINT WHOLE-ROCK ISOCHRON
1257	1	2512.84	25	0.7026	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-1	0.0000139*	87.1	421		0.473	0.7233	T	33		age of intrusion		AN EIGHT-POINT WHOLE-ROCK ISOCHRON
1258	1	2512.84	25	0.7026	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-60A	0.0000139*	140	32.7		13	1.174	T	33		age of intrusion		AN EIGHT-POINT WHOLE-ROCK ISOCHRON
1259	1	2512.84	25	0.7026	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-60B	0.0000139*	135	36.1		11.3	1.11	T	33		age of intrusion		AN EIGHT-POINT WHOLE-ROCK ISOCHRON
1260	1	2512.84	25	0.7026	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-66	0.0000139*	110	23.4		14.1	1.198	T	33		age of intrusion		AN EIGHT-POINT WHOLE-ROCK ISOCHRON
1261	1	2717.43	35	0.7147	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-45A	0.0000139*	183	49.5		11.2	1.139	T	34		age of intrusion		A SIX-POINT WHOLE-ROCK ISOCHRON
1262	1	2717.43	35	0.7147	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-45D	0.0000139*	289	42.2		21.5	1.568	T	34		age of intrusion		A SIX-POINT WHOLE-ROCK ISOCHRON
1263	1	2717.43	35	0.7147	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-45E	0.0000139*	98.3	79.6		3.63	0.8589	T	34		age of intrusion		A SIX-POINT WHOLE-ROCK ISOCHRON
1264	1	2717.43	35	0.7147	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-45H	0.0000139*	288	31.2		30	1.892	T	34		age of intrusion		A SIX-POINT WHOLE-ROCK ISOCHRON
1265	1	2717.43	35	0.7147	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-58	0.0000139*	42.5	95.3		1.05	0.7611	T	34		age of intrusion		A SIX-POINT WHOLE-ROCK ISOCHRON
1266	1	2717.43	35	0.7147	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-67A	0.0000139*	163	63.3		7.67	1.015	T	34		age of intrusion		A SIX-POINT WHOLE-ROCK ISOCHRON
1267	1	2700.79	152	0.7042	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-53	0.0000139*	125	100		3.65	0.8486	T	35		age of metamorphic crystallization		AN 8 OR 9 POINT WHOLE-ROCK ISOCHRON
1268	1	2700.79	152	0.7042	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-38	0.0000139*	136	106		3.77	0.8555	T	35		age of metamorphic crystallization		AN 8 OR 9 POINT WHOLE-ROCK ISOCHRON
1269	1	2700.79	152	0.7042	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-10	0.0000139*	144	102		4.18	0.8648	T	35		age of metamorphic crystallization		AN 8 OR 9 POINT WHOLE-ROCK ISOCHRON
1270	1	2700.79	152	0.7042	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	L-36	0.0000139*	152	99.3		4.52	0.8778	T	35		age of metamorphic crystallization		AN 8 OR 9 POINT WHOLE-ROCK ISOCHRON
1271	1	2700.79	152	0.7042	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-9	0.0000139*	171	100		5.06	0.8917	T	35		age of metamorphic crystallization		AN 8 OR 9 POINT WHOLE-ROCK ISOCHRON
1272	1	2700.79	152	0.7042	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-40	0.0000139*	159	88.4		5.33	0.9119	T	35		age of metamorphic crystallization		AN 8 OR 9 POINT WHOLE-ROCK ISOCHRON
1273	1	2700.79	152	0.7042	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-42	0.0000139*	172	88		5.79	0.9277	T	35		age of metamorphic crystallization		AN 8 OR 9 POINT WHOLE-ROCK ISOCHRON
1274	1	2700.79	152	0.7042	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-28	0.0000139*	183	89.9		6.03	0.9431		35		age of metamorphic crystallization		AN 8 OR 9 POINT WHOLE-ROCK ISOCHRON
1275	1	2700.79	152	0.7042	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-43	0.0000139*	173	81.9		6.28	0.9508	T	35		age of metamorphic crystallization		AN 8 OR 9 POINT WHOLE-ROCK ISOCHRON
1276	1	2956.28	221	0.7025	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-72	0.0000139*	45	321		0.407	0.7192	T	36		age of metamorphic crystallization		A FOUR-POINT WHOLE-ROCK ISOCHRON
1277	1	2956.28	221	0.7025	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-29	0.0000139*	149	105		4.2	0.8838	T	36		age of metamorphic crystallization		A FOUR-POINT WHOLE-ROCK ISOCHRON
1278	1	2956.28	221	0.7025	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-30	0.0000139*	169	63.5		8	1.056	T	36		age of metamorphic crystallization		A FOUR-POINT WHOLE-ROCK ISOCHRON
1279	1	2956.28	221	0.7025	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-71	0.0000139*	202	71		8.53	1.058	T	36		age of metamorphic crystallization		A  FOUR-POINT WHOLE-ROCK ISOCHRON
1280	1	2766.37	58	0.7019	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	252A	0.0000139*	24.1	68.62		1.0195	0.742	T	37		age of metamorphic crystallization		A 12-POINT WHOLE-ROCK ISOCHRON
1281	1	2766.37	58	0.7019	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	70-5	0.0000139*	45.54	173.7		0.7604	0.7316	T	37		age of metamorphic crystallization		A 12-POINT WHOLE-ROCK ISOCHRON
1282	1	2766.37	58	0.7019	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	921	0.0000139*	20.96	118.4		0.5128	0.722	T	37		age of metamorphic crystallization		A 12-POINT WHOLE-ROCK ISOCHRON
1283	1	2766.37	58	0.7019	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	926	0.0000139*	21.48	122.8		0.5067	0.7218	T	37		age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON
1283	2	2766.37			plagioclase		926A	0.0000139*	23.02	245.4		0.2715	0.7138	T			age of metamorphic crystallization		"PLAG. PLOTS ON 2826 M.Y., 12-POINT WHOLE-ROCK ISOCHRON"
1283	3	2925.48			hornblende		926B	0.0000147*	23.71	123.3		0.5571	0.7223	T			age of metamorphic crystallization		HORNBLENDE PLOTS ON 2826 M.Y. 12-POINT WHOLE-ROCK ISOCHRON
1284	1	2766.37	58	0.7019	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	955	0.0000139*	18.47	107		0.5	0.7215	T	37		age of metamorphic crystallization		A 12-POINT WHOLE-ROCK ISOCHRON
1285	1	2766.37	58	0.7019	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	3323	0.0000139*	22.55	160.6		0.4066	0.7176	T	37		age of metamorphic crystallization		A 12-POINT WHOLE-ROCK ISOCHRON
1286	1	2766.37	58	0.7019	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	952	0.0000139*	15.45	124.4		0.3596	0.7161	T	37		age of metamorphic crystallization		A 12-POINT WHOLE-ROCK ISOCHRON
1287	1	2766.37	58	0.7019	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	940	0.0000139*	17.51	160		0.3167	0.7143	T	37		age of metamorphic crystallization		RUBIDIUM AND STRONTIUM VALUES ARE THE AVERAGE OF REPLICATE ANALYSES; AGE DETERMINED BY A 12-POINT WHOLE-ROCK ISOCHRON
1288	1	2766.37	58	0.7019	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	70-16	0.0000139*	55.83	623		0.2594	0.7128	T	37		age of metamorphic crystallization		A 12-POINT WHOLE-ROCK ISOCHRON
1289	1	2766.37	58	0.7019	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	932	0.0000139*	10.27	125.4		0.237	0.711	T	37		age of metamorphic crystallization		A 12-POINT WHOLE-ROCK ISOCHRON
1290	1	2766.37	58	0.7019	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	7117	0.0000139*	7.52	120.4		0.1806	0.7093	T	37		age of metamorphic crystallization		A 12-POINT WHOLE-ROCK ISOCHRON
1291	1	2766.37	58	0.7019	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	3401	0.0000139*	4.21	88.95		0.1371	0.7069	T			age of metamorphic crystallization		RUBIDIUM AND STRONTIUM VALUES ARE AVERAGES OF REPLICATE ANALYSES; AGE DETERMINED BY 12-POINT WHOLE-ROCK ISOCHRON
1292	1	2192.74	100	0.7022	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	960	0.0000139*	24.81	106.6		0.6742	0.7228	T	38		age of intrusion		A 5-POINT WHOLE-ROCK ISOCHRON
1293	1	2192.74	100	0.7022	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	70-60	0.0000139*	24.81	106.6		0.6742	0.7228	T	38		age of metamorphic crystallization		A 5-POINT WHOLE-ROCK ISOCHRON
1294	1	2192.74	100	0.7022	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	3251	0.0000139*	46.29	227.2		0.5901	0.7207	T	38		age of intrusion		A 5-POINT WHOLE-ROCK ISOCHRON
1295	1	2192.74	100	0.7022	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	69-1	0.0000139*	17.25	145.7		0.3427	0.7126	T	38		age of intrusion		A FIVE-POINT WHOLE-ROCK ISOCHRON
1296	1	2192.74	100	0.7022	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	69-20	0.0000139*	15.18	157		0.2799	0.711	T	38		age of intrusion		A FIVE-POINT WHOLE-ROCK ISOCHRON
1297	1	2153.58	35	0.7034	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	70-64A	0.0000139*	10.62	206.4		0.1488	0.709	T	39		age of intrusion	PLAGIOCLASE FROM THE GROUNDMASS	"A 6-POINT MINERAL ISOCHRON, RUBIDIUM AND STRONTIUM VALUES ARE AVERAGES OF REPLICATE ANALYSES"
1297	2	2153.58	35	0.7034	augite-ferroaugite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	70-64B	0.0000139*	1.84	29.85		0.1783	0.7106	T	39		age of intrusion	AUGITE FROM THE GROUNDMASS	A 6-POINT MINERAL ISOCHRON
1297	3	2277.44	35	0.7034	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	70-64C	0.0000147*	161.5	270.2		1.7387	0.7596	T	39		age of intrusion	PLAGIOCLASE FROM PHENOCRYSTS	A 6-POINT MINERAL ISOCHRON; RUBIDIUM AND STRONTIUM VALUES ARE AVERAGES OF REPLICATE ANALYSES
1298	1	2153.58	35	0.7034	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	70-63	0.0000139*	116.9	223		1.5229	0.7505	T	39		age of intrusion	PLAGIOCLASE FROM PHENOCRYSTS	A 6-POINT MINERAL ISOCHRON
1299	1	2153.58	35	0.7034	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	70-67A	0.0000139*	71.75	453.5		0.4581	0.7177	T	39		age of intrusion		A 6-POINT MINERAL ISOCHRON
1299	2	2153.58	35	0.7034	augite-ferroaugite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	70-67B	0.0000139*	7.52	67.53		0.3222	0.713	T	39		age of intrusion		A SIX-POINT MINERAL ISOCHRON
1300	1				whole rock		70-20	0.0000139*	16.9	159.5		0.3067	0.7188	T					NO AGE CALCULATED
1301	1				whole rock		3294	0.0000139*	3.11	134.9		0.0667	0.7081	T					NO AGE CALCULATED; 87SR/86SR VALUE IS AVERAGE OF REPLICATE ANALYSES
1302	1				whole rock		3312	0.0000139*	4.25	77.43		0.1588	0.7068	T					NO AGE CALCULATED
1303	1	2766.37			plagioclase		927A	0.0000139*	6.65	262.1		0.0729	0.7057	T			age of metamorphic crystallization		PLAGIOCLASE PLOTS ON A 2826 M.Y. 12-POINT WHOLE-ROCK ISOCHRON; RUBIDIUM AND STRONTIUM VALUES ARE AVERAGES OF REPLICATE ANALYSES.
1303	2	2766.37			augite-ferroaugite		927B	0.0000139*	20.34	148.8		0.3959	0.7181	T			age of metamorphic crystallization		AUGITE PLOTS ON A 2826 M.Y. 12-POINT WHOLE-ROCK ISOCHRON
1354	1	2032.2		0.701	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	QBG-101	0.0000139*	95.9	391		0.7104	0.7228	T		Divis (1977)	initial age disturbed by later metamorphism			
1355	1	2770.29		0.701	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	QBG-150	0.0000139*	44.6	384		0.3365	0.7145	T		Divis (1977)	age of metamorphic crystallization			
1356	1	2505.98	100	0.701	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	AG-015	0.0000139*	80.1	196		1.191	0.7441	T	41	Divis (1977)	age of intrusion		A 5-POINT WHOLE-ROCK ISOCHRON	
1357	1	2505.98	100	0.701	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	AG-064	0.0000139*	85	160		1.551	0.7567	T	41	Divis (1977)	age of intrusion		A 5-POINT WHOLE-ROCK ISOCHRON	
1358	1	2505.98	100	0.701	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	AG-067	0.0000139*	220	235		2.732	0.801	T	41	Divis (1977)	age of intrusion		A FIVE-POINT WHOLE-ROCK ISOCHRON	
1359	1	2505.98	100	0.701	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	AG-104B	0.0000139*	303	266		3.32	0.8214	T	41	Divis (1977)	age of intrusion		A 5-POINT WHOLE-ROCK ISOCHRON	
1360	1	2505.98	100	0.701	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	QF-152	0.0000139*	169	412		1.189	0.7434	T	41	Divis (1977)	minimum age of metamorphic crystallization		A 5-POINT WHOLE-ROCK ISOCHRON	
1361	1	1624.97	85	0.7021	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GD-201	0.0000139*	98.8	306		0.9333	0.723	T	42	Divis (1977)	minimum age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
1362	1	1624.97	85	0.7021	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GD-202	0.0000139*	95.8	294		0.9448	0.7241	T	42	Divis (1977)	minimum age of intrusion		A 5-POINT WHOLE-ROCK ISOCHRON	
1363	1	1624.97	85	0.7021	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GD-203	0.0000139*	88.2	299		0.8535	0.7228	T	42	Divis (1977)	minimum age of intrusion		A 5-POINT WHOLE-ROCK ISOCHRON	
1364	1	1624.97	85	0.7021	microcline	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GD-204F	0.0000139*	95.2	149		1.8517	0.7454	T	42	Divis (1977)	minimum age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
1365	1	1624.97	85	0.7021	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GD-206	0.0000139*	94.1	346		0.7894	0.7235	T	42	Divis (1977)	minimum age of intrusion		A 5-POINT WHOLE-ROCK ISOCHRON	
1366	1	1938.22	70	0.7042	microcline	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GD-201F	0.0000139*	91.8	396		0.6714	0.7232	T	43	Divis (1977)	"material inherited from source rock, maximum age for unite"		4-POINT WHOLE-ROCK ISOCHRON	SEE RECORD 1361 FOR WHOLE-ROCK DATA
1367	1	1938.22	70	0.7042	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GD-205	0.0000139*	110	385		0.8278	0.728	T	43	Divis (1977)	"material inherited from source rock, maximum age for unite"		A 4-POINT WHOLE-ROCK ISOCHRON	
1368	1	1938.22	70	0.7042	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GD-209	0.0000139*	102	250		1.188	0.737	T	43	Divis (1977)	"material inherited from source rock, maximum age for unite"		A 4-POINT WHOLE-ROCK ISOCHRON	
1369	1	1938.22	70	0.7042	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GD-210	0.0000139*	115	635		0.5237	0.7183	T	43	Divis (1977)	"material inherited from source rock, maximum age for unite"		A 4-POINT WHOLE-ROCK ISOCHRON	
1370	1	1566.24	200	0.7029	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-303	0.0000139*	20.8	68.6		0.8794	0.7232	T	44	Divis (1977)	age of metamorphic crystallization		A 4-POINT WHOLE-ROCK ISOCHRON
1371	1	1566.24	200	0.7029	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-310	0.0000139*	70.5	35.5		5.808	0.8316	T	44	Divis (1977)	age of metamorphic crystallization		A 4-POINT WHOLE-ROCK ISOCHRON
1372	1	1566.24	200	0.7029	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-313	0.0000139*	50.9	36.7		4.046	0.7938	T	44	Divis (1977)	age of metamorphic crystallization		A 4-POINT WHOLE-ROCK ISOCHRON
1373	1	1566.24	200	0.7029	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-314C	0.0000139*	26.2	352		0.2154	0.7069	T	44	Divis (1977)	age of metamorphic crystallization		A 4-POINT WHOLE-ROCK ISOCHRON
1374	1	1840.33	60	0.7015	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	HG-058	0.0000139*	145	476		0.886	0.7243	T	45	Divis (1977)	age of metamorphic crystallization		A 3-POINT WHOLE-ROCK ISOCHRON
1375	1	1840.33	60	0.7015	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	HG-061	0.0000139*	97.4	10.7		28.27	1.442	T	45	Divis (1977)	age of metamorphic crystallization		3-POINT WHOLE-ROCK ISOCHRON
1376	1	1840.33	60	0.7015	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	HG-061B	0.0000139*	43.6	333		0.3786	0.7117	T	45	Divis (1977)	age of metamorphic crystallization		3-POINT WHOLE-ROCK ISOCHRON
1377	1	1644.55	50	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	RG-021	0.0000139*	143	12.1		37.14	1.544	T	46	Divis (1977)	age of intrusion		A 6-POINT WHOLE-ROCK ISOCHRON
1378	1	1644.55	50	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	RG-037	0.0000139*	96.6	65.9		4.325	0.8082	T	46	Divis (1977)	age of intrusion		6-POINT WHOLE-ROCK ISOCHRON
1379	1	1644.55	50	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	RG-041	0.0000139*	176	231		2.21	0.7543	T	46	Divis (1977)	age of intrusion		A 6-POINT WHOLE-ROCK ISOCHRON
1380	1	1644.55	50	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	RG-045	0.0000139*	107	128		2.413	0.7583	T	46	Divis (1977)	age of intrusion		A 6-POINT WHOLE-ROCK ISOCHRON
1381	1	1644.55	50	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	RG-048	0.0000139*	100	102		2.857	0.7701	T	46	Divis (1977)	age of intrusion		A 6-POINT WHOLE-ROCK ISOCHRON
1382	1	1644.55	50	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	RG-052	0.0000139*	73.8	7.42		28.37	1.3447	T	46	Divis (1977)	age of intrusion		A 6-POINT WHOLE-ROCK ISOCHRON
1383	1	1566.24	80	0.7023	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	WM-043	0.0000139*	112	467		0.6972	0.7182	T	47	Divis (1977)	age of intrusion		A 4-POINT WHOLE-ROCK ISOCHRON
1384	1	1566.24	80	0.7023	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	WM-102	0.0000139*	90.8	870		0.3021	0.71	T	47	Divis (1977)	age of intrusion		A 4-POINT WHOLE-ROCK ISOCHRON
1385	1	1566.24	80	0.7023	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	WM-105	0.0000139*	91.8	233		1.141	0.73	T	47	Divis (1977)	age of intrusion		A 4-POINT WHOLE-ROCK ISOCHRON
1386	1	1566.24	80	0.7023	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	WM-110	0.0000139*	120	419		0.8279	0.7218	T	47	Divis (1977)	age of intrusion		A 4-POINT WHOLE-ROCK ISOCHRON
1387	1	1390.04		0.702	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NPC-101	0.0000139*	235	85		8.13	0.8642	T		Divis (1977)	age of intrusion		
1388	1	1448.77	50	0.7088	oligoclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	AG-109	0.0000139*	82.4	569		0.4197	0.7173	T		Divis (1977)	age of later metamorphism		A 3-POINT MINERAL ISOCHRON
1388	2	1448.77	50	0.7088	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	AG-109	0.0000139*	622	40.1		49.41	1.7365	T		Divis (1977)	age of later metamorphism		
1388	3	1532.1	50	0.7088	epidote	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	AG-109	0.0000147*	10.6	1212		0.0252	0.7096	T		Divis (1977)	age of later metamorphism		A 3-POINT MINERAL ISOCHRON
1389	1	1789.43		0.7044	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	BCF-011	0.0000139*	114	110		3.01	0.7819	T		Divis (1977)	age of metamorphic crystallization		2-POINT MINERAL ISOCHRON
1389	2	1789.43		0.7044	epidote	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	BCF-011	0.0000139*	30.5	2218		0.0398	0.7044	T		Divis (1977)	age of metamorphic crystallization		2-POINT MINERAL ISOCHRON
1390	1	1442.9		0.702	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	RG-206M	0.0000139*	235	41.5		16.98	1.0495	T		Divis (1977)	age of later metamorphism		
1393	1	2032.2		0.701	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	QBG-101	0.0000139*	95.9	391		0.7104	0.7228	T		Divis (1976)	initial age disturbed by later metamorphism		
1394	1	1644.55	50	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	RG-021	0.0000139*	143	12.1		37.14	1.544	T	46	Divis (1976)	age of intrusion		A 6-POINT WHOLE-ROCK ISOCHRON
1395	1	1566.24	80	0.7023	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	WM-043	0.0000139*	112	467		0.6972	0.7182	T	47	Divis (1976)	age of intrusion		A 4-POINT WHOLE-ROCK ISOCHRON
1396	1	2860	81	0.7048	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-35-68R	1.42E-05	44.3	398		0.322	0.7179	T	48		age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON
1397	1	2860	81	0.7048	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-38-68R	1.42E-05	37.6	338		0.323	0.7191	T	48		age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON
1398	1	2860	81	0.7048	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-76-68R	1.42E-05	28	318		0.255	0.7149	T	48		age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON
1399	1	2860	81	0.7048	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-77-68R	1.42E-05	91	171		1.55	0.768	T	48		age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON
1400	1	2860	81	0.7048	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-78-68R	1.42E-05	212	96		6.55	0.9773	T	48		age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON
1400	2	2087		0.7845	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GM-78-68MI	1.42E-05	401	102		11.9	1.1348	T					AGE CALCULATED BY COMPILER USING A 2-POINT MINERAL-WHOLE-ROCK ISOCHRON	"AGE INDICATES THAT THE ROCK REMAINED UNDER OPEN-STATE CONDITIONS FOR MILLIONS OF YEARS, PROBABLY DUE TO CONTINUING HIGH THERMAL CONDITIONS DEEP IN THE CRUST"
1400	3	1925.47		0.8057	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GM-78-68PL	0.0000147*	78.9	155		1.497	0.8449	T				"OLIGOCLASE, AN-22"	AGE CALCULATED BY COMPILER USING A 2-POINT MINERAL-WHOLE-ROCK ISOCHRON	"AGE INDICATES THAT THE ROCK REMAINED UNDER OPEN-STATE CONDITIONS FOR MILLIONS OF YEARS, PROBABLY DUE TO HIGH THERMAL CONDITIONS DEEP IN THE CRUST"
1400	4	1691.52		0.8268	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GM-78-68BI	0.0000147*	1299	17.9		403	10.088	T					AGE CALCULATED BY COMPILER USING A 2-POINT MINERAL-WHOLE-ROCK ISOCHRON	"AGE INDICATES THAT ROCK REMAINED UNDER OPEN-STATE CONDITIONS FOR MILLIONS OF YEARS, PROBABLY DUE TO HIGH THERMAL CONDITIONS DEEP IN THE CRUST"
1401	1				whole rock		GM-98-68R	0.0000139*	67.2	264		0.739	0.7328	T					AN AGE WAS NOT CALCULATED	IT IS REASONABLE TO ASSUME THAT THE ROCK IS 2860 M.Y. OLD
1401	2	2437.46		0.7067	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GM-98-68R	0.0000139*	67.2	264		0.739	0.7328	T					3-POINT MINERAL-WHOLE-ROCK ISOCHRON	"AGE INDICATES THAT ROCK REMAINED UNDER OPEN-STATE CONDITIONS FOR MILLIONS OF YEARS, PROBABLY DUE TO HIGH THERMAL CONDITIONS DEEP IN THE CRUST"
1401	3	2577.65		0.7067	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GM-98-68PL	0.0000147*	8.45	375		0.065	0.7093	T				"OLIGOCLASE, AN-27"	3-POINT MINERAL-WHOLE-ROCK ISOCHRON	"AGE INDICATES THAT ROCK REMAINED UNDER OPEN-STATE CONDITIONS FOR MILLIONS OF YEARS, PROBABLY DUE TO HIGH THERMAL CONDITIONS DEEP IN THE CRUST"
1401	4	2577.65		0.7067	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GM-98-68BI	0.0000147*	662	14.4		246	9.379	T					3-POINT MINERAL-WHOLE-ROCK ISOCHRON	"AGE INDICATES THAT ROCK REMAINED UNDER OPEN-STATE CONDITIONS FOR MILLIONS OF YEARS, PROBABLY DUE TO HIGH THERMAL CONDITIONS DEEP IN THE CRUST"
1402	1				whole rock		GM-103A-69R	1.42E-05	19	114		0.479	0.7198	T					AN AGE WAS NOT CALCULATED	IT IS REASONABLE TO ASSUME THAT THE ROCK IS 2860 M.Y. OLD
1403	1	2860	81	0.7048	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-104-69R	1.42E-05	61.3	71.1		2.5	0.8091	T	48		age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON	
1404	1				whole rock		W2-CR-4(114)R	1.42E-05	11.3	118		0.278	0.7142	T					AN AGE WAS NOT CALCULATED	IT IS REASONABLE TO ASSUME THAT THE ROCK IS 2860 M.Y. OLD
1405	1				whole rock		FCA-R1-69R	1.42E-05	44.6	686		0.188	0.709	T					AN AGE WAS NOT CALCULATED	IT IS REASONABLE TO ASSUME THAT THE ROCK IS 2860 M.Y. OLD
1406	1	2500	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-55-68R	1.42E-05	126	272		1.35	0.7481	T	50		maximum age of intrusion		RB AND SR CONCENTRATIONS WERE DETERMINED BY X-RAY FLUORESCENCE; 20-POINT WHOLE-ROCK ISOCHRON	
1407	1	1458.56		0.7053	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	GM-56-68BI	0.0000139*	404	19.2		69.4	2.155	T						"AGE INDICATES THAT ROCK REMAINED UNDER OPEN-STATE CONDITIONS FOR MILLIONS OF YEARS, PROBABLY DUE TO HIGH THERMAL CONDITIONS DEEP IN THE CRUST"
1408	1	2500	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-81-68R	1.42E-05	2	724		0.008	0.7073	T	50		maximum age of intrusion		RB AND SR CONCENTRATIONS WERE DETERMINED BY X-RAY FLUORESCENCE; 20-POINT WHOLE-ROCK ISOCHRON	
1408	2				epidote		GM-81-68EP	1.42E-05	2	1090		0.005	0.707	T					NO AGE CALCULATED	
1409	1	2550	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	W2-CR-1(99)R	1.42E-05	136	254		1.545	0.7607	T	50		maximum age of intrusion			
1409	2	2540	30	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	W2-CR-1(99)R	1.42E-05	136	254		1.545	0.7607	T	51		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	
1410	1	2500	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	W2-CR-1(153)R	1.42E-05	115	289		1.149	0.7481	T	50		maximum age of intrusion		20-POINT WHOLE-ROCK ISOCHRON	
1410	2	2540	30	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	W2-CR-1(153)R	1.42E-05	115	289		1.149	0.7481	T	51		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	
1411	1	2500	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	W2-CR-14(101)R	1.42E-05	241	87.5		7.98	0.9989	T	50		maximum age of intrusion		20-POINT WHOLE-ROCK ISOCHRON	
1411	2	2540	30	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	W2-CR-14(101)R	1.42E-05	241	87.5		7.98	0.9989	T	51		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	
1411	3	2639.76	60	0.7053	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	W2-CR-14(101)R	0.0000147*	241	87.5		7.98	0.9989	T	52		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	
1412	1	2500	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	W2-CR-14(157)R	1.42E-05	223	95.6		6.92	0.9632	T	50		maximum age of intrusion		20-POINT WHOLE-ROCK ISOCHRON	
1412	2	2540	30	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	W2-CR-14(157)R	1.42E-05	223	95.6		6.92	0.9632	T	51		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	
1412	3	2639.76	60	0.7053	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	W2-CR-14(157)R	0.0000147*	223	95.6		6.92	0.9632	T	52		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	
1412	4	1648.04		0.8083	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	W2-CR-14(157)MI	0.0000147*	445	111		11.96	1.076	T					AGE CALCULATED BY COMPILER USING A 2-POINT MINERAL-WHOLE-ROCK ISOCHRON	"AGE INDICATES THAT THE ROCK REMAINED UNDER OPEN-STATE CONDITIONS FOR MILLIONS OF YEARS, PROBABLY DUE TO HIGH THERMAL CONDITIONS DEEP IN THE CRUST"
1413	1	2500	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	W2-CR-26(99)R	1.42E-05	169	117		4.25	0.8603	T	50		maximum age of intrusion		20-POINT WHOLE-ROCK ISOCHRON	
1413	2	2540	30	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	W2-CR-26(99)R	1.42E-05	169	117		4.25	0.8603	T	51		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	
1413	3	2639.76	60	0.7053	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	W2-CR-26(99)R	0.0000147*	169	117		4.25	0.8603	T	52		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	
1414	1	2500	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	W2-CR-26(165)R	1.42E-05	176	124		4.19	0.8606	T	50		maximum age of intrusion		20-POINT WHOLE-ROCK ISOCHRON	
1414	2	2540	30	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	W2-CR-26(165)R	1.42E-05	176	124		4.19	0.8606	T	51		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	
1414	3	2639.76	60	0.7053	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	W2-CR-26(165)R	0.0000147*	176	124		4.19	0.8606	T	52		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	
1414	4	1827.13		0.7565	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	W2-CR-26(165)MI	0.0000147*	357	137		7.72	0.9483	T					AGE CALCULATED BY COMPILER USING A 2-POINT MINERAL-WHOLE-ROCK ISOCHRON	"AGE INDICATES THAT THE ROCK REMAINED UNDER OPEN-STATE CONDITIONS FOR MILLIONS OF YEARS, PROBABLY DUE TO HIGH THERMAL CONDITIONS DEEP IN THE CRUST"
1415	1	2500	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ZW-263R	1.42E-05	133	85.2		4.53	0.8606	T	50		maximum age of intrusion		20-POINT WHOLE-ROCK ISOCHRON	
1415	2	1870		0.7413	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	ZW-263MI	1.42E-05	421	97		13.02	1.0841	T					AGE CALCULATED BY COMPILER USING A 2-POINT MINERAL-WHOLE-ROCK ISOCHRON	"AGE INDICATES THAT THE ROCK REMAINED UNDER OPEN-STATE CONDITIONS FOR MILLIONS OF YEARS, PROBABLY DUE TO HIGH THERMAL CONDITIONS DEEP IN THE CRUST"
1416	1	2500	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1686R	1.42E-05	166	83.8		5.84	0.9169	T	50		maximum age of intrusion		20-POINT WHOLE-ROCK ISOCHRON	
1416	2	2540	30	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1686R	1.42E-05	166	83.8		5.84	0.9169	T	51		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	
1416	3	2432.72		0.7203	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	D1686PL	0.0000147*	49.5	126		1.145	0.7612	T	53			ALBITE OR SODIC OLIGOCLASE	NO ANALYTICAL ERROR GIVEN; 4-POINT MINERAL-WHOLE-ROCK ISOCHRON	"AGE INDICATES THAT THE ROCK REMAINED UNDER OPEN-STATE CONDITIONS FOR MILLIONS OF YEARS, PROBABLY DUE TO HIGH THERMAL CONDITIONS DEEP IN THE CRUST"
1416	4	2432.72		0.7203	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	D1686BI	0.0000147*	736	22.6		136.2	5.277	T	53				NO ANALYTICAL ERROR GIVEN; 4-POINT MINERAL-WHOLE-ROCK ISOCHRON	"AGE INDICATES THAT THE ROCK REMAINED UNDER OPEN-STATE CONDITIONS FOR MILLIONS OF YEARS, PROBABLY DUE TO HIGH THERMAL CONDITIONS DEEP IN THE CRUST"
1416	5	2432.72		0.7203	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	D1686MU	0.0000147*	486	15.1		132.7	5.098	T	53				NO ANALYTICAL ERROR GIVEN; 4-POINT MINERAL-WHOLE-ROCK ISOCHRON	"AGE INDICATES THAT THE ROCK REMAINED UNDER OPEN-STATE CONDITIONS FOR MILLIONS OF YEARS, PROBABLY DUE TO HIGH THERMAL CONDITIONS DEEP IN THE CRUST"
1417	1	2300.42		0.7203	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	D1686R	0.0000139*	166	83.8		5.84	0.9169	T	53				NO ANALYTICAL ERROR GIVEN; 4-POINT MINERAL-WHOLE-ROCK ISOCHRON	"AGE INDICATES THAT THE ROCK REMAINED UNDER OPEN-STATE CONDITIONS FOR MILLIONS OF YEARS, PROBABLY DUE TO HIGH THERMAL CONDITIONS DEEP IN THE CRUST"
1417	2	2075.27			microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	D1686MI	0.0000139*	465	155		8.96	1.01	T					ANALYTICAL ERROR AND INITIAL 87/86 SR RATIO NOT GIVEN	"AGE INDICATES THAT THE ROCK REMAINED UNDER OPEN-STATE CONDITIONS FOR MILLIONS OF YEARS, PROBABLY DUE TO HIGH THERMAL CONDITIONS DEEP IN THE CRUST"
1418	1	2500	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	DDH-1R	1.42E-05	146	40.6		10.76	1.0752	T	50		maximum age of intrusion		20-POINT WHOLE-ROCK ISOCHRON	
1419	1	2500	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	DDH-2R	1.42E-05	111	196		1.643	0.7717	T	50		maximum age of intrusion		20-POINT WHOLE-ROCK ISOCHRON	
1420	1	2500	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D114944R	1.42E-05	197	80.1		7.31	0.975	T	50		maximum age of intrusion		20-POINT WHOLE-ROCK ISOCHRON	
1420	2	2540	30	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D114944R	1.42E-05	197	80.1		7.31	0.975	T	51		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	
1420	3	1605.6		0.8157	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	D114944MI	0.0000147*	547	54.6		31.3	1.4977	T					AGE CALCULATED BY COMPILER USING A 2-POINT MINERAL-WHOLE-ROCK ISOCHRON	"AGE INDICATES THAT THE ROCK REMAINED UNDER OPEN-STATE CONDITIONS FOR MILLIONS OF YEARS, PROBABLY DUE TO HIGH THERMAL CONDITIONS DEEP IN THE CRUST"
1421	1	2500	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D114945R	1.42E-05	192	85.1		6.7	0.9491	T	50		maximum age of intrusion		20-POINT WHOLE-ROCK ISOCHRON	
1421	2	2540	30	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D114945R	1.42E-05	192	85.1		6.7	0.9491	T	51		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	
1421	3	1547.62		0.8084	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	D114945MI	0.0000147*	356	37.3		29.7	1.4321	T					AGE CALCULATED BY COMPILER USING A 2-POINT MINERAL-WHOLE-ROCK ISOCHRON	"AGE INDICATES THAT THE ROCK REMAINED UNDER OPEN-STATE CONDITIONS FOR MILLIONS OF YEARS, PROBABLY DUE TO HIGH THERMAL CONDITIONS DEEP IN THE CRUST"
1422	1	2500	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	256179R	1.42E-05	113	154		2.14	0.7899	T	50		maximum age of intrusion		20-POINT WHOLE-ROCK ISOCHRON	
1422	2	1891		0.7329	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	256179MI	1.42E-05	447	215		6.14	0.8965	T					AGE CALCULATED BY COMPILER USING A 2-POINT MINERAL-WHOLE-ROCK ISOCHRON	"AGE INDICATES THAT THE ROCK REMAINED UNDER OPEN-STATE CONDITIONS FOR MILLIONS OF YEARS, PROBABLY DUE TO HIGH THERMAL CONDITIONS DEEP IN THE CRUST"
1423	1	2500	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-1(739)R	1.42E-05	191	17		37	2.0844	T	50		maximum age of intrusion		20-POINT WHOLE-ROCK ISOCHRON	
1423	2	2540	30	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-1(739)R	1.42E-05	191	17		37	2.0844	T	51		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	
1423	3	2639.76	60	0.7053	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-1(739)R	0.0000147*	191	17		37	2.0844	T	52		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	
1424	1	2500	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-1(771)R	1.42E-05	221	30.5		22.7	1.5371	T	50		maximum age of intrusion		20-POINT WHOLE-ROCK ISOCHRON	
1424	2	2540	30	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-1(771)R	1.42E-05	221	30.5		22.7	1.5371	T	51		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	
1424	3	2639.76	60	0.7053	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-1(771)R	0.0000147*	221	30.5		22.7	1.5371	T	52		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	
1424	4	2070.4		0.8972	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GM-1(771)MI	0.0000147*	425	47.4		28.5	1.7006	T					AGE CALCULATED BY COMPILER USING A 2-POINT MINERAL-WHOLE-ROCK ISOCHRON	"AGE INDICATES THAT THE ROCK REMAINED UNDER OPEN-STATE CONDITIONS FOR MILLIONS OF YEARS, PROBABLY DUE TO HIGH THERMAL CONDITIONS DEEP IN THE CRUST"
1425	1	2500	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-1(891)R	1.42E-05	143	27.6		15.86	1.2811	T	50		maximum age of intrusion		20-POINT WHOLE-ROCK ISOCHRON	
1425	2	2540	30	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-1(891)R	1.42E-05	143	27.6		15.86	1.2811	T	51		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	
1425	3	2639.76	60	0.7053	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-1(891)R	0.0000147*	143	27.6		15.86	1.2811	T	52		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	
1426	1	2500	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-1(1021)R	1.42E-05	99.2	35.5		8.33	0.9964	T	50		maximum age of intrusion		20-POINT WHOLE-ROCK ISOCHRON	
1427	1	2500	70	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GM-1(1156)R	1.42E-05	33.3	40.4		2.41	0.8051	T	50		maximum age of intrusion		20-POINT WHOLE-ROCK ISOCHRON	
1464	1	2788.89	60	0.7016	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	4173	0.0000139*	34.33	672.9		0.1475	0.7073	T	56		age of metamorphic crystallization		A 13-POINT WHOLE-ROCK ISOCHRON
1464	2	2805.53	74	0.7015	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	4173	0.0000139*	34.33	672.9		0.1475	0.7073	T	57		age of metamorphic crystallization		AN 8-POINT WHOLE-ROCK ISOCHRON
1465	1	2788.89	60	0.7016	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	3400	0.0000139*	28.86	374.1		0.2231	0.7106	T	56		age of metamorphic crystallization		A 13-POINT WHOLE-ROCK ISOCHRON
1465	2	2805.53	74	0.7015	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	3400	0.0000139*	28.86	374.1		0.2231	0.7106	T	57		age of metamorphic crystallization		AN 8-POINT WHOLE-ROCK ISOCHRON
1466	1	2788.89	60	0.7016	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	7112	0.0000139*	47.09	324.2		0.4205	0.7175	T	56		age of metamorphic crystallization		A 13-POINT WHOLE-ROCK ISOCHRON
1466	2	2805.53	74	0.7015	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	7112	0.0000139*	47.09	324.2		0.4205	0.7175	T	57		age of metamorphic crystallization		AN 8-POINT WHOLE-ROCK ISOCHRON
1467	1	2788.89	60	0.7016	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	3432	0.0000139*	88.63	317.6		0.8096	0.7344	T	56		age of metamorphic crystallization		A 13-POINT WHOLE ROCK ISOCHRON
1467	2	2805.53	74	0.7015	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	3432	0.0000139*	88.63	317.6		0.8096	0.7344	T	57		age of metamorphic crystallization		AN 8-POINT WHOLE-ROCK ISOCHRON
1468	1	2788.89	60	0.7016	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	3422	0.0000139*	81.28	212.9		1.1084	0.7456	T	56		age of metamorphic crystallization		A 13-POINT WHOLE-ROCK ISOCHRON
1468	2	2805.53	74	0.7015	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	3422	0.0000139*	81.28	212.9		1.1084	0.7456	T	57		age of metamorphic crystallization		AN 8-POINT WHOLE-ROCK ISOCHRON
1469	1	2788.89	60	0.7016	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	825	0.0000139*	130.3	252.7		1.4995	0.7607	T	56		age of metamorphic crystallization		A 13-POINT WHOLE-ROCK ISOCHRON
1469	2	2805.53	74	0.7015	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	825	0.0000139*	130.3	252.7		1.4995	0.7607	T	57		age of metamorphic crystallization		AN 8-POINT WHOLE-ROCK ISOCHRON
1470	1	2788.89	60	0.7016	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	83	0.0000139*	204.5	316.5		1.8825	0.7793	T	56		age of metamorphic crystallization		A 13-POINT WHOLE-ROCK ISOCHRON; ADDITIONAL ANALYTICAL VALUES: RB=199.7 PPM; SR=312.2 PPM; 87RB/86SR=1.8638
1470	2	2805.53	74	0.7015	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	83	0.0000139*	204.5	316.5		1.8825	0.7793	T	57		age of metamorphic crystallization		AN 8-POINT WHOLE-ROCK ISOCHRON; ADDITIONAL ANALYTICAL VALUES: RB=199.7 PPM; SR=312.2 PPM; 87RB/86SR=1.8638
1471	1	2788.89	60	0.7016	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	438	0.0000139*	131.1	148		2.5855	0.7986	T	56		age of metamorphic crystallization		A 13-POINT WHOLE-ROCK ISOCHRON; ADDITIONAL ANALYTICAL VALUES: RB=129.9 PPM; SR=148.5 PPM; 87RB/86SR=2.5532
1471	2	2805.53	74	0.7015	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	438	0.0000139*	131.1	148		2.5855	0.7986	T	57		age of metamorphic crystallization		AN 8-POINT WHOLE-ROCK ISOCHRON; ADDITIONAL ANALYTICAL VALUES: RB=129.9 PPM; SR=148.5 PPM; 87RB/86SR=2.5532
1472	1	2788.89	60	0.7016	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	3311	0.0000139*	23.03	312.7		0.213	0.7096	T	56		age of metamorphic crystallization		A 13-POINT WHOLE-ROCK ISOCHRON	
1472	2	2754.62	104	0.7019	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	3311	0.0000139*	23.03	312.7		0.213	0.7096	T	58		age of metamorphic crystallization		A 5-POINT WHOLE-ROCK ISOCHRON	
1473	1	2788.89	60	0.7016	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	469	0.0000139*	59.95	498.3		0.3483	0.7161	T	56		age of metamorphic crystallization		A 13-POINT WHOLE-ROCK ISOCHRON	
1473	2	2754.62	104	0.7019	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	469	0.0000139*	59.95	498.3		0.3483	0.7161	T	58		age of metamorphic crystallization		A 5-POINT WHOLE-ROCK ISOCHRON	
1474	1	2788.89	60	0.7016	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	449	0.0000139*	71.34	289.9		0.7136	0.7299	T	56		age of metamorphic crystallization		A 13-POINT WHOLE-ROCK ISOCHRON	
1474	2	2754.62	104	0.7019	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	449	0.0000139*	71.34	289.9		0.7136	0.7299	T	58		age of metamorphic crystallization		A 5-POINT WHOLE-ROCK ISOCHRON	
1475	1	2788.89	60	0.7016	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	344	0.0000139*	88.89	262.4		0.983	0.7403	T	56		age of metamorphic crystallization		A 13-POINT WHOLE-ROCK ISOCHRON	
1475	2	2754.62	104	0.7019	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	344	0.0000139*	88.89	262.4		0.983	0.7403	T	58		age of metamorphic crystallization		A 5-POINT WHOLE-ROCK ISOCHRON	
1476	1				whole rock		383	1.39E-05	135.5	224.8		1.7534	0.764	T				CONSIDERABLE CHLORITIZATION OF BIOTITE INDICATES ALTERATION	NO AGE CALCULATED; ADDITIONAL ANALYTICAL VALUES: RB=135.9 PPM; SR=225.1 PPM; 87RB/86SR=1.7563	
1477	1	2788.89	60	0.7016	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	3328	0.0000139*	137.7	125.7		3.2046	0.8255	T	56		age of metamorphic crystallization		A 13-POINT WHOLE-ROCK ISOCHRON	
1477	2	2754.62	104	0.7019	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	3328	0.0000139*	137.7	125.7		3.2046	0.8255	T	58		age of metamorphic crystallization		A 5-POINT WHOLE-ROCK ISOCHRON	
1501	1	2554.93			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1044R	0.0000139*	237	50.9		13.5	1.2033	T	59		minimum age of intrusion		SIX-POINT WHOLE-ROCK ISOCHRON	
1502	1	2554.93			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1729R	0.0000139*	119	180		1.93	0.7793	T	59		minimum age of intrusion		SIX-POINT WHOLE-ROCK ISOCHRON	
1502	2	1820.75			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1729R	0.0000139*	119	180		1.93	0.7793	T	60		age meaning uncertain (geologic factors)		4-POINT WHOLE-ROCK ISOCHRON	MAY BE AGE OF PEGMATITIC ACTIVITY
1503	1	2554.93			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1730R	0.0000139*	118	174		1.97	0.7775	T	59		minimum age of intrusion		SIX-POINT WHOLE-ROCK ISOCHRON	
1503	2	1820.75			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1730R	0.0000139*	118	174		1.97	0.7775	T	60		age meaning uncertain (geologic factors)		4-POINT WHOLE-ROCK ISOCHRON	MAY BE AGE OF PEGMATITIC ACTIVITY
1504	1	2554.93			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1732R	0.0000139*	54.4	79.7		1.99	0.7816	T	59		minimum age of intrusion		6-POINT WHOLE-ROCK ISOCHRON	
1504	2	1820.75			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1732R	0.0000139*	54.4	79.7		1.99	0.7816	T	60		age meaning uncertain (geologic factors)		4-POINT WHOLE-ROCK ISOCHRON	MAY BE THE AGE OF PEGMATITIC ACTIVITY
1505	1	2554.93			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1040R	0.0000139*	204	66.5		8.88	1.0294	T	59		minimum age of intrusion		6-POINT WHOLE-ROCK ISOCHRON	
1506	1	2554.93			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1041R	0.0000139*	256	72.2		10.28	1.0739	T	59		minimum age of intrusion		6-POINT WHOLE-ROCK ISOCHRON	
1507	1	1820.75			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1731R	0.0000139*	133	60.1		6.51	0.8989	T	60		age meaning uncertain (geologic factors)		4-POINT WHOLE-ROCK ISOCHRON	MAY INDICATE TIME OF PEGMATITIC ACTIVITY
1508	1				whole rock		D1389R	0.0000139*	135	111		3.5	0.8391	T						"NO AGE CALCULATED, ALTHOUGH PROBABLY ABOUT 2600 M.Y."
1509	1				whole rock		D1390R	0.0000139*	126	88.7		4.1	0.8538	T						"NO AGE CALCULATED, ALTHOUGH PROBABLY ABOUT 2600 M.Y."
1510	1				whole rock		D1391R	0.0000139*	99.3	164		1.75	0.7723	T						"NO AGE CALCULATED, ALTHOUGH PROBABLY ABOUT 2600 M.Y."
1511	1				whole rock		D1392R	0.0000139*	91	243		1.09	0.7413	T						"NO AGE CALCULATED, ALTHOUGH ABOUT 2600 M.Y."
1512	1	1722.86	50	0.7732	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	D1396R	0.0000139*	57.3	118		1.42	0.8087	T	61		age of later metamorphism		7-POINT WHOLE-ROCK AND MINERAL ISOCHRON	
1513	1	1722.86	50	0.7732	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	D1042R	0.0000139*	149	132		3.32	0.8478	T	61		age of later metamorphism		7-POINT WHOLE-ROCK ISOCHRON	
1513	2	2799.65		0.7	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	D1042R	0.0000139*	149	132		3.32	0.8478	T			minimum age of metamorphic crystallization			
1514	1	1722.86	50	0.7732	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	D1042BR	0.0000139*	168	57.7		8.55	0.9901	T	61		age of intrusion		7-POINT WHOLE-ROCK AND MINERAL ISOCHRON	
1515	1	1722.86	50	0.7732	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	D1042HR	0.0000139*	167	69.5		7.07	0.943	T	61		age of later metamorphism		7-POINT WHOLE-ROCK AND MINERAL ISOCHRON	
1516	1	1722.86	50	0.7732	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	D1042JR	0.0000139*	176	94.6		5.46	0.9096	T	61		age of later metamorphism		7-POINT WHOLE-ROCK AND MINERAL ISOCHRON	
1516	2	1713.07	50	0.7732	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	D1042JPL	0.0000139*	25.9	32.7		2.29	0.8363	T	61		age of later metamorphism		7-POINT WHOLE-ROCK AND MINERAL ISOCHRON. RB AND SR VALUES ARE AVERAGES OF REPLICATE ANALYSES	
1516	3	1821.95	50	0.7732	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	D1042JMI	0.0000147*	369	115		9.26	1.0022	T	61		age of later metamorphism		7-POINT WHOLE-ROCK AND MINERAL ISOCHRON	
1517	1				whole rock		D1394R	0.0000139*	95.2	98.2		2.81	0.8139	T						"NO AGE CALCULATED, ALTHOUGH PROBABLY AROUND 2600 M.Y."
1518	1				whole rock		D1395R	0.0000139*	89.1	240		1.08	0.756	T						"NO AGE CALCULATED, ALTHOUGH PROBABLY AROUND 2600 M.Y."
1519	1				whole rock		D1043R	0.0000139*	118	119		2.88	0.7829	T						"NO AGE CALCULATED, ALTHOUGH PROBABLY AROUND 2600 M.Y."
1520	1	2652.82	140	0.7015	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1044	0.0000139*	237	50.9		13.5	1.2033	T	62				8-POINT WHOLE-ROCK ISOCHRON	"THIS AGE SUPERSEDES THAT GIVEN BY SIMS AND PETERMAN (1976) FOR ""PRESQUE ISLE GRANITE"""
1521	1	2652.82	140	0.7015	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1729	0.0000139*	119	180		1.93	0.7793	T	62				8-POINT WHOLE-ROCK ISOCHRON	"THIS AGE SUPERSEDES THAT GIVEN BY SIMS AND PETERMAN (1976) FOR ""PRESQUE ISLE GRANITE"""
1522	1	2652.82	140	0.7015	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1730	0.0000139*	118	174		1.97	0.7775	T	62				8-POINT WHOLE-ROCK ISOCHRON	"THIS AGE SUPERSEDES THAT GIVEN BY SIMS AND PETERMAN (1976) FOR ""PRESQUE ISLE GRANITE"""
1523	1	2652.82	140	0.7015	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1732	0.0000139*	54.4	79.7		1.99	0.7816	T	62		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	"THIS AGE SUPERSEDES THAT GIVEN BY SIMS AND PETERMAN (1976) FOR ""PRESQUE ISLE GRANITE"""
1524	1	2652.82	140	0.7015	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D2492	0.0000139*	233	158		4.13	0.8503	T	62		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
1525	1	2652.82	140	0.7015	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D2493	0.0000139*	104	640		0.469	0.7194	T	62		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
1526	1	2652.82	140	0.7015	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D2495	0.0000139*	127	245		1.51	0.7591	T	62		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
1527	1	2652.82	140	0.7015	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D2494	0.0000139*	124	864		0.417	0.7172	T	62		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
1528	1	1076.79	25	0.7047	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	166	0.0000139*	169.65	208.64		2.361	0.7401	T	63		age of volcanism		4-POINT WHOLE-ROCK ISOCHRON	
1529	1	1076.79	25	0.7047	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	169	0.0000139*	125.07	214.77		1.688	0.7299	T	63		age of volcanism	PLAGIOCLASE HIGHLY ALTERED	4-POINT WHOLE-ROCK ISOCHRON	
1530	1	1076.79	25	0.7047	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	170	0.0000139*	131.87	224.5		1.703	0.7299	T	63		age of volcanism		4-POINT WHOLE-ROCK ISOCHRON	
1531	1	1076.79	25	0.7047	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	171	0.0000139*	140.87	334.06		1.221	0.7227	T	63		age of volcanism	FE-OXIDE AND SERICITE ALTERATION	4-POINT WHOLE-ROCK ISOCHRON	
1532	1	1020.01	6	0.7042	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	203	0.0000139*	165.02	14.09		35.61	1.2167	T	64		age of volcanism		6-POINT WHOLE-ROCK ISOCHRON USING BOTH RHYOLITE AND BASALT SAMPLES
1533	1	1020.01	6	0.7042	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	204	0.0000139*	76.36	237.14		0.933	0.7185	T	64		age of volcanism		6-POINT WHOLE-ROCK ISOCHRON USING BOTH RHYOLITE AND BASALT SAMPLES
1534	1	1020.01	6	0.7042	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	205	0.0000139*	223.62	12.34		56.678	1.5386	T	64		age of volcanism		6-POINT WHOLE-ROCK ISOCHRON
1535	1	1020.01	6	0.7042	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	206	0.0000139*	179.59	118.27		4.422	0.7672	T	64		age of volcanism		6-POINT WHOLE-ROCK ISOCHRON
1536	1	1020.01	6	0.7042	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	207	0.0000139*	82.16	201.26		1.184	0.7216	T	64		age of volcanism		6-POINT WHOLE-ROCK ISOCHRON
1537	1	1020.01	6	0.7042	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	208	0.0000139*	184.27	86.26		6.642	0.8058	T	64		age of volcanism		6-POINT WHOLE-ROCK ISOCHRON
1538	1	957.36	40	0.7181	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	209	0.0000139*	205.94	61.93		9.767	0.8538	T	65		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON
1539	1	957.36	40	0.7181	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	210	0.0000139*	195.65	98.41		5.806	0.795	T	65		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON
1540	1	957.36	40	0.7181	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	211	0.0000139*	206.44	60.76		9.979	0.8541	T	65		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON
1541	1	957.36	40	0.7181	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	212	0.0000139*	201.53	45.43		13.051	0.8941		65		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON
1542	1	957.36	40	0.7181	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	213	0.0000139*	206.3	66.43		9.115	0.8467	T	65		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON
1543	1	1020.01	32	0.704	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	225	0.0000139*	183.88	22.13		24.9	1.0638	T			age of volcanism		
1544	1	1052.32	50	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	241	0.0000139*	61.2	222.8		0.797	0.7205	T	66		minimum age of volcanism		8-POINT WHOLE-ROCK ISOCHRON
1545	1	1052.32	50	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	242	0.0000139*	109.6	101.3		3.144	0.7552	T	66		minimum age of volcanism		8-POINT WHOLE-ROCK ISOCHRON
1546	1	1052.32	50	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	243	0.0000139*	107.27	118.4		2.63	0.7454	T	66		minimum age of volcanism		8-POINT WHOLE-ROCK ISOCHRON
1547	1	1052.32	50	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	245	0.0000139*	104.4	93.6		3.278	0.7573	T	66		minimum age of volcanism		87SR/86SR IS AVERAGE OF TWO ANALYSES; 8-POINT WHOLE-ROCK ISOCHRON
1548	1	1052.32	50	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	247	0.0000139*	147.9	172.1		2.498	0.7456	T	66		minimum age of volcanism		8-POINT WHOLE-ROCK ISOCHRON	
1549	1	1052.32	50	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	248	0.0000139*	90.5	110.4		2.381	0.7439	T	66		minimum age of volcanism		8-POINT WHOLE-ROCK ISOCHRON	
1550	1	1052.32	50	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	249	0.0000139*	55.22	137.08		1.168	0.7255	T	66		minimum age of volcanism		8-POINT WHOLE-ROCK ISOCHRON	
1551	1	1052.32	50	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	250	0.0000139*	54.3	225.89		0.7	0.718	T	66		minimum age of volcanism		8-POINT WHOLE-ROCK ISOCHRON	
1552	1	1083.64			whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	251	0.0000139*	33.03	74.19		1.291	0.7257	T			maximum age of volcanism			
1553	1	1155.1			whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	252	0.0000139*	122.49	60.04		5.958	0.7962	T			maximum age of volcanism			
1554	1	1106.16	35	0.7045	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	221	0.0000139*	45.6	201.76		0.656	0.715	T	67		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
1555	1	1106.16	35	0.7045	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	220	0.0000139*	55.6	135.23		1.192	0.7223	T	67		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
1556	1	1106.16	35	0.7045	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	219	0.0000139*	73.87	114.85		1.867	0.7345	T	67		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
1557	1	1106.16	35	0.7045	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	217	0.0000139*	30.95	71.49		1.255	0.7238	T	67		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
1558	1	1106.16	35	0.7045	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	222	0.0000139*	49.02	200.26		0.709	0.7162	T	67		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON; INDIVIDUAL SR-ISOTOPE ANALYSES APPEAR TO BE PRECISE TO SLIGHTLY BETTER THAN +/- 0.1% -- COMPILER	
1578	1				whole rock		1	0.0000139*	164	2924		0.162	0.7074	T		Catanzaro and Hanson (1971)		-80 MESH	NO AGE CALCULATED	"AGE OF SYENITE DETERMINED AS 2740 M.Y. BY PB 207/PB 206 (CATANZARO AND HANSON, 1971)"
1578	2				apatite		1	0.0000139*	0.34	21210		0	0.7009	T		Catanzaro and Hanson (1971)		-80 MESH	NO AGE CALCULATED	"AGE OF SYENITE DETERMINED AS 2740 M.Y. BY PB 207/PB 206 (CATANZARO AND HANSON, 1971)"
1579	1				whole rock		2	0.0000139*	188	2039		0.266	0.7105	T		Catanzaro and Hanson (1971)		-80 MESH	NO AGE CALCULATED	"AGE OF 2740 M.Y. DETERMINED BY PB 207/PB 206 FROM SPHENE FROM SAME ROCK (CATANZARO AND HANSON, 1971)"
1579	2	2535.35			biotite	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2	0.0000139*	1089	43.3		72.6	3.366	T		Catanzaro and Hanson (1971)	age meaning uncertain (geologic factors)	-80 MESH	SUPPOSEDLY A 2-POINT MINERAL-WHOLE-ROCK ISOCHRON	"AGE LOWERED DUE TO SHEARING; AGE OF 2740 M.Y. DETERMINED BY PB 207/PB 206 FROM SPHENE (CATANZARO AND HANSON, 1971)"
1580	1				whole rock		2	0.0000139*	192	2594		0.214	0.7091	T		Catanzaro and Hanson (1971)		-80 MESH	NO AGE CALCULATED	"AGE OF SYENITE DETERMINED AS 2740 M.Y. BY PB 207/PB 206 (CATANZARO AND HANSON, 1971)"
1581	1	2613.66	65	0.7002	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	3	0.0000139*	232.8	191.1		3.52	0.8335	T	68	Catanzaro and Hanson (1971)	age of intrusion	"FIELD NUMBER DLNW 7, -80 MESH"	7-POINT WHOLE-ROCK ISOCHRON	
1581	2	2613.66	65	0.7002	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	3	0.0000139*	237.5	189.5		3.62	0.8381	T	68	Catanzaro and Hanson (1971)	age of intrusion	"FIELD NUMBER DLNW 7-II (CRUSHED AND ANALYZED SEPARATELY FROM DLNW 7), -80 MESH"	7-POINT WHOLE-ROCK ISOCHRON	
1582	1	2613.66	65	0.7002	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	5	0.0000139*	214.5	197.7		3.13	0.819	T	68	Catanzaro and Hanson (1971)	age of intrusion	"FIELD NUMBER DLNW10.02, - 80 MESH"	7-POINT WHOLE-ROCK ISOCHRON	
1583	1	2613.66	65	0.7002	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	6	0.0000139*	188.1	211.6		2.57	0.7974	T	68	Catanzaro and Hanson (1971)	age of intrusion	"FIELD NUMBER DL 17, - 80 MESH"	7-POINT WHOLE-ROCK ISOCHRON	
1584	1	2613.66	65	0.7002	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8	0.0000139*	241.8	256.6		2.72	0.8025	T	68	Catanzaro and Hanson (1971)	age of intrusion	"FIELD NUMBER DLNW30, - 80 MESH"	7-POINT WHOLE-ROCK ISOCHRON	
1585	1	2613.66	65	0.7002	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	7	0.0000139*	175.9	551		0.922	0.7351	T	68	Catanzaro and Hanson (1971)	age of intrusion	"FIELD NUMBER DL19, -80 MESH"	7-POINT WHOLE-ROCK ISOCHRON	
1585	2	2584.3	40	0.7014	apatite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	7	0.0000139*	1.84	392		0.0135	0.702	T		Catanzaro and Hanson (1971)	age of intrusion	"FIELD NUMBER DL19, - 80 MESH"	8-POINT MINERAL-WHOLE-ROCK ISOCHRON WHICH INCLUDES THE 7 WHOLE ROCKS OF SAMPLE SUITE NO. 00068	
1585	3	2665.64		0.7014	apatite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	7	0.0000147*	1.84	392		0.0135	0.702	T			minimum age of intrusion	"FIELD NUMBER DL19, - 80 MESH"	SUPPOSEDLY A 2-POINT MINERAL-WHOLE-ROCK ISOCHRON	
1586	1	2603.87	50	0.7005	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	4	0.0000139*	253	122		5.98	0.9228	T			age of intrusion	FIELD NUMBER DLNW10; -80 MESH	8-POINT WHOLE-ROCK ISOCHRON WHICH INCLUDES THE SEVEN WHOLE-ROCKS OF SAMPLE SUITE 00068	
1587	1	2613.66	65	0.7002	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	4	0.0000139*	215.9	156.3		3.99	0.8501	T	68	Catanzaro and Hanson (1971)	age of intrusion	"FIELD NUMBER DLNW10, - 80 MESH"	7-POINT WHOLE-ROCK ISOCHRON	
1587	2	2545.14			apatite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	4	0.0000139*	3.26	129.3		0.0727	0.7061	T			minimum age of intrusion	FIELD NUMBER DLNW10; -80 MESH	SUPPOSEDLY A 2-POINT MINERAL-WHOLE-ROCK ISOCHRON	WHOLE-ROCK ISOCHRON AGE IS 2670 M.Y.
1587	3	2629.41			biotite chlorite group	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	4	0.0000147*	830	3.3		724	26.74	T			initial age disturbed by later metamorphism	FIELD NUMBER DLNW10; -80 MESH		WHOLE-ROCK ISOCHRON AGE IS 2670 M.Y.
1587	4	2432.72			epidote	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	4	0.0000147*	18.26	1072		0.0491	0.7195	T			age of metamorphic crystallization	FIELD NUMBER DLNW10; -80 MESH	SUPPOSEDLY A 2-POINT MINERAL-WHOLE-ROCK ISOCHRON	WHOLE-ROCK ISOCHRON AGE IS 2670 M.Y.
1588	1	2584.3			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	4	0.0000139*	818	7.4		319	12.63	T			age of intrusion	"FIELD NUMBER DLNW10, - 80 MESH"		7-POINT WHOLE-ROCK ISOCHRON AGE IS 2670 M.Y.
1588	2	2388.52			whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	4	0.0000139*	215.9	156.3		3.99	0.8501	T	69		initial age disturbed by later metamorphism	"FIELD NUMBER DLNW10, - 80 MESH"	3-POINT WHOLE-ROCK-PLAGIOCLASE-MICROCLINE ISOCHRON	7-POINT WHOLE-ROCK ISOCHRON AGE IS 2670 M.Y.
1588	3	2525.89			microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	4	0.0000147*	607	229.2		7.65	0.9765	T	69		initial age disturbed by later metamorphism	"FIELD NUMBER DLNW10, - 80 MESH"	A 3-POINT WHOLE-ROCK-MICROCLINE-PLAGIOCLASE ISOCHRON	7-POINT WHOLE-ROCK ISOCHRON AGE IS 2670 M.Y.
1588	4	2525.89			plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	4	0.0000147*	40.8	163.4		0.722	0.7375	T	69		initial age disturbed by later metamorphism	FIELD NUMBER DLNW10; -80 MESH	3-POINT WHOLE-ROCK-PLAGIOCLASE-MICROCLINE ISOCHRON	7-POINT WHOLE-ROCK ISOCHRON AGE IS 2670 M.Y.
1593	1	2643.03		0.702	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-9	0.0000139*	186	454		1.186	0.748	N	73		age of intrusion		4-POINT WHOLE-ROCK K-FELDSPAR ISOCHRON	
1594	1				K feldspar		KA-13	1.39E-05	267	283		2.731	0.791	N					NO AGE CALCULATED	
1595	1	2496.2		0.71	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-14	0.0000139*	184	419		1.271	0.756	N	71		initial age disturbed by later metamorphism		10-POINT WHOLE-ROCK-PLAGIOCLASE-K-FELDSPAR ISOCHRON	
1595	2	2457.04			K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-14	0.0000139*	184	419		1.271	0.756	N			initial age disturbed by later metamorphism			
1595	3	2650.11		0.71	K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-14	0.0000147*	184	419		1.271	0.756	N			initial age disturbed by later metamorphism			
1596	1	2496.2		0.71	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-15.1	0.0000139*	136	408		0.965	0.745	N	71		initial age disturbed by later metamorphism		10-POINT WHOLE-ROCK-PLAGIOCLASE-K-FELDSPAR ISOCHRON	
1596	2	2447.25			K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-15.1	0.0000139*	136	408		0.965	0.745	N			initial age disturbed by later metamorphism			
1596	3	2660.46		0.71	K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-15.1	0.0000147*	136	408		0.965	0.745	N			initial age disturbed by later metamorphism			
1597	1	2496.2		0.71	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-15.2	0.0000139*	261	397		1.903	0.777	N	71		initial age disturbed by later metamorphism		10-POINT WHOLE-ROCK K-FELDSPAR-PLAGIOCLASE ISOCHRON	
1597	2	2408.09			K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-15.2	0.0000139*	261	397		1.903	0.777	N			initial age disturbed by later metamorphism			
1597	3	2577.65		0.71	K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-15.2	0.0000147*	261	397		1.903	0.777	N			initial age disturbed by later metamorphism			
1598	1	2643.03		0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-23	0.0000139*	132	498		0.767	0.733	N	73		age of intrusion		4-POINT WHOLE-ROCK K-FELDSPAR ISOCHRON	
1599	1	2643.03		0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-24	0.0000139*	171	88.2		5.613	0.917	N	73		age of intrusion		4-POINT WHOLE-ROCK K-FELDSPAR ISOCHRON	
1599	2	2153.58			K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-24	0.0000139*	392	81.1		13.99	1.176	N			initial age disturbed by later metamorphism		2-POINT WHOLE-ROCK K-FELDSPAR ISOCHRON	
1600	1				K feldspar		KA-247 K-F	1.39E-05	160	445		1.041	0.745	N					NO AGE CALCULATED	
1603	1				K feldspar		KA-54 KF	1.39E-05	307	307		2.895	0.814	N					NO AGE CALCULATED	
1604	1	2525.56		0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-55 WR	0.0000139*	244	125		5.65	0.903	N	77		age of intrusion		6-POINT WHOLE-ROCK-K-FELDSPAR ISOCHRON	
1604	2	2075.27			K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-55 K-F	0.0000139*	485	142		9.89	1.03	N			age not evaluated		2-POINT WHOLE-ROCK K-FELDSPAR ISOCHRON	
1604	3	1749.49			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-55	0.0000147*	1409	8.7	9.48			N			initial age disturbed by later metamorphism			
1605	1	1708.18			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-56	0.0000139*	1247	20.5	8.65			N			initial age disturbed by later metamorphism			
1606	1	1815.86			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-108	0.0000139*	1007	20.3	7.44			N			initial age disturbed by later metamorphism			
1607	1	2525.56		0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA109 WR	0.0000139*	77.3	360		0.622	0.724	N	77		age of intrusion		6-POINT WHOLE-ROCK K-FELDSPAR ISOCHRON	
1607	2	2525.56		0.702	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-109 K-F	0.0000139*	299	219		3.95	0.854	N	77		age of intrusion		6-POINT WHOLE-ROCK K-FELDSPAR ISOCHRON	
1608	1	2486.41			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-186	0.0000139*	582	31	5.92			N			initial age disturbed by later metamorphism			
1609	1	2985.65		0.7025	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-208	0.0000139*	82.1	238		0.999	0.7478	N	70		initial age disturbed by later metamorphism		A 7-POINT WHOLE-ROCK ISOCHRON	AN AGE OF 3250 M.Y. IS OBTAINED USING AN AVERAGED WEIGHTED SR CONTENT FOR 9 WHOLE-ROCK SAMPLES (6 LOCALITIES--INCLUDING THIS SAMPLE) AND ASSUMING AN INITIAL 87 SR/86 SR OF 0.700 FOR THE MORTON GNEISS
1609	2	2496.2		0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-208	0.0000139*	82.1	238		0.999	0.7478	N	71		initial age disturbed by later metamorphism		10-POINT WHOLE-ROCK PLAGIOCLASE K-FELDSPAR ISOCHRON	
1609	3	2639.76		0.71	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-208	0.0000147*	279	322		2.508	0.802	N	71		initial age disturbed by later metamorphism		10-POINT WHOLE-ROCK-PLAGIOCLASE-K-FELDSPAR ISOCHRON	
1609	4	2639.76		0.71	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-208	0.0000147*	13	228		0.165	0.7163	N	71		initial age disturbed by later metamorphism		10-POINT WHOLE-ROCK-PLAGIOCLASE-K-FELDSPAR ISOCHRON	
1609	5	3478.27		0.7	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-208	0.0000147*	82.1	238		0.999	0.7478	N			age of metamorphic crystallization			
1610	1	2594.08		0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-208	0.0000139*	82.1	238		0.999	0.7478	N	72		"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"		A 4-POINT WHOLE-ROCK PLAGIOCLASE ISOCHRON	
1610	2	2594.08		0.71	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-208	0.0000139*	13	228		0.165	0.7163	N	72		"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"		4-POINT WHOLE-ROCK PLAGIOCLASE ISOCHRON	
1610	3	2629.41			K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-208	0.0000147*	279	322		2.508	0.802	N			initial age disturbed by later metamorphism		SUPPOSEDLY A 2-POINT WHOLE-ROCK K-FELDSPAR ISOCHRON	
1610	4	2691.52		0.71	K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-208	0.0000147*	279	322		2.508	0.802	N			initial age disturbed by later metamorphism			
1611	1	3729.61		0.7	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-209	0.0000139*	80.5	204		1.142	0.762	N			maximum age of metamorphic crystallization			AN AGE OF 3550 M.Y. IS OBTAINED USING AN AVERAGED WEIGHTED SR CONTENT FOR 3 WHOLE-ROCK SAMPLES AND ASSUMING AN INITIAL 87 SR/86 SR OF 0.700 FOR THE MONTEVIDEO GNEISS
1611	2	1855.02			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-209	0.0000139*	558	31.7	4.21			N			initial age disturbed by later metamorphism			
1612	1	2985.65		0.7025	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	76	0.0000139*	132	282		1.355	0.7582	N	70		initial age disturbed by later metamorphism		7-POINT WHOLE-ROCK ISOCHRON	AN AGE OF 3250 M.Y. IS OBTAINED USING AN AVERAGED WEIGHTED SR CONTENT FOR 9 WHOLE ROCK SAMPLES (6 LOCALITIES--INCLUDING THIS SAMPLE) AND ASSUMING AN INITIAL 87 SR/86 SR OF 0.700 FOR THE MORTON GNEISS
1612	2	2966.07		0.7	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	76	0.0000139*	132	282		1.355	0.7582	N			age of metamorphic crystallization			
1613	1	2985.65		0.7025	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	337-D	0.0000139*	75.3	301		0.724	0.7364	N	70		initial age disturbed by later metamorphism		7-POINT WHOLE-ROCK ISOCHRON	AN AGE OF 3250 M.Y. IS OBTAINED USING AN AVERAGED WEIGHTED SR CONTENT FOR 9 WHOLE-ROCK SAMPLES (6 LOCALITIES--INCLUDING THIS SAMPLE) AND ASSUMING AN INITIAL 87 SR/86 SR OF 0.700 FOR THE MORTON GNEISS
1613	2	3455.52		0.7	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	337-D	0.0000139*	75.3	301		0.724	0.7364	N			age of metamorphic crystallization			
1614	1	2985.65		0.7025	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	337L	0.0000139*	110	278		1.146	0.7532	N	70		initial age disturbed by later metamorphism		7-POINT WHOLE-ROCK ISOCHRON	AN AGE OF 3250 M.Y. IS CALCULATED USING AN AVERAGED WEIGHTED SR CONTENT FOR 9 WHOLE-ROCK SAMPLES (6 LOCALITIES--INCLUDING THIS SAMPLE) AND ASSUMING AN INITIAL 87SR/86SR OF 0.700 FOR THE MORTON GNEISS
1614	2	3201		0.7	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	337-L	0.0000139*	110	278		1.146	0.7532	N			age of metamorphic crystallization			
1615	1	2985.65		0.7025	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	338	0.0000139*	112	287		1.13	0.7519	N	70		initial age disturbed by later metamorphism		7-POINT WHOLE-ROCK ISOCHRON	AN AGE OF 3250 M.Y. IS OBTAINED USING AN AVERAGED WEIGHTED SR CONTENT FOR 9 WHOLE-ROCK SAMPLES (6 LOCALITIES--INCLUDING THIS SAMPLE) AND ASSUMING AN INITIAL 87 SR/ 86 SR OF 0.700 FOR THE MORTON GNEISS
1615	2	2496.2		0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	338	0.0000139*	112	287		1.13	0.7519	N	71		initial age disturbed by later metamorphism		10-POINT WHOLE-ROCK-PLAGIOCLASE-K-FELDSPAR ISOCHRON	
1615	3	2639.76		0.71	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	338	0.0000147*	215	377		1.649	0.7671	N	71		initial age disturbed by later metamorphism		10-POINT WHOLE-ROCK-PLAGIOCLASE-K-FELDSPAR ISOCHRON	
1615	4	2639.76		0.71	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	338	0.0000147*	12.3	162		0.22	0.7178	N	71		initial age disturbed by later metamorphism		10-POINT WHOLE-ROCK-PLAGIOCLASE-KFELDSPAR ISOCHRON	
1615	5	2091.1			K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	338	0.0000147*	215	377		1.649	0.7671	N			initial age disturbed by later metamorphism		SUPPOSEDLY A 2-POINT WHOLE-ROCK-KFELDSPAR ISOCHRON	
1616	1	2594.08		0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	338	0.0000139*	112	287		1.13	0.7519	N	72		"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"		4-POINT WHOLE-ROCK-PLAGIOCLASE	
1616	2	2594.08		0.71	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	338	0.0000139*	12.3	162		0.22	0.7178	N	72		"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"		4-POINT WHOLE-ROCK PLAGIOCLASE ISOCHRON	
1616	3	2536.24		0.71	K feldspar	Conventional Rb-Sr (measured initial 87Sr/86Sr)	338	0.0000147*	215	377		1.649	0.7671	N			initial age disturbed by later metamorphism			
1616	4	3343.7		0.7	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	338	0.0000147*	112	287		1.13	0.7519	N			age of metamorphic crystallization			
1617	1	2985.65		0.7025	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	338-I	0.0000139*	143	674		0.614	0.7241	N	70		initial age disturbed by later metamorphism		7-POINT WHOLE-ROCK ISOCHRON	AN AGE OF 3250 M.Y. IS OBTAINED USING AN AVERAGED WEIGHTED SR CONTENT FOR 9 WHOLE-ROCK SAMPLES (6 LOCALITIES--INCLUDING THIS SAMPLE) AND ASSUMING AN INITIAL 87 SR/86 SR OF 0.700 FOR THE MORTON GNEISS
1617	2	2711.55		0.7	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	338-I	0.0000139*	143	674		0.614	0.7241	N			initial age disturbed by later metamorphism			
1618	1	2985.65		0.7025	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	339	0.0000139*	35.5	587		0.175	0.7096	N	70		initial age disturbed by later metamorphism		7-POINT WHOLE-ROCK ISOCHRON	AN AGE OF 3250 M.Y. IS OBTAINED USING AN AVERAGED WEIGHTED SR CONTENT FOR 9 WHOLE-ROCK SAMPLES (6 LOCALITIES--INCLUDING THIS SAMPLE) AND ASSUMING AN INITIAL 87 SR/86 SR OF 0.700 FOR THE MORTON GNEISS
1618	2	3758.98		0.7	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	339	0.0000139*	35.5	587		0.175	0.7096	N			maximum age of metamorphic crystallization			
1618	3				plagioclase		339	0.0000147*	3.8	442		0.025	0.703	N					NO AGE CALCULATED	
1621	1	2594.08		0.7	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	368	0.0000139*	193	194		2.88	0.8079	N			initial age disturbed by later metamorphism			
1622	1	3426.15		0.7	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	369	0.0000139*	105	291		1.045	0.7521	N			age of metamorphic crystallization			AN AGE OF 3550 M.Y. IS OBTAINED USING AN AVERAGED WEIGHTED SR CONTENT FOR 3 WHOLE-ROCK SAMPLES AND ASSUMING AN INITIAL 87 SR/86 SR OF 0.700 FOR THE MONTEVIDEO GNEISS
1623	1	2907.33		0.7	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	384	0.0000139*	134	251		1.546	0.7651	N			initial age disturbed by later metamorphism			
1624	1	3269.53		0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	385	0.0000139*	83.8	383		0.633	0.73	N			age of metamorphic crystallization		AGE CALCULATED BY COMPILER	AN AGE OF 3550 M.Y. IS OBTAINED USING AN AVERAGED WEIGHTED SR CONTENT FOR 3 WHOLE-ROCK SAMPLES AND ASSUMING AN INITIAL 87SR/86SR OF 0.700 FOR THE MONTEVIDEO GNEISS
1624	2	2300.42		0.709	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	385	0.0000139*	83.8	383		0.633	0.73	N	74		initial age disturbed by later metamorphism		2-POINT WHOLE-ROCK-PLAGIOCLASE ISOCHRON	
1624	3	2432.72		0.709	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	385	0.0000147*	11.9	249		0.138	0.7136	N	74		initial age disturbed by later metamorphism		2-POINT WHOLE-ROCK-PLAGIOCLASE ISOCHRON	
1624	4	1915.12		0.714	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	385	0.0000147*	83.8	383		0.633	0.73	N	75		"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"		2-POINT WHOLE-ROCK-KFELDSPAR ISOCHRON	
1624	5	1915.12		0.714	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	385	0.0000147*	205	533		1.113	0.742	N	75		"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"		2-POINT WHOLE ROCK-KFELDSPAR ISOCHRON	
1625	1	1791.39	160	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	386 WR	0.0000139*	77.5	415		0.541	0.721	N	76		age of intrusion		4-POINT WHOLE-ROCK-K-FELDSPAR ISOCHRON	
1625	2	1791.39	160	0.707	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	386 K-F	0.0000139*	146	360		1.174	0.736	N	76		age of intrusion		4-POINT WHOLE-ROCK K-FELDSPAR ISOCHRON	
1626	1	1791.39	160	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	387 WR	0.0000139*	76.1	443		0.497	0.719	N	76		age of intrusion		4-POINT WHOLE-ROCK-K-FELDSPAR ISOCHRON	
1626	2	1791.39	160	0.707	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	387 K-F	0.0000139*	143	484		0.855	0.729	N	76		age of intrusion		4-POINT WHOLE-ROCK-K-FELDSPAR ISOCHRON	
1627	1	2643.03		0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	388	0.0000139*	108	640		0.489	0.72	N	73		age of intrusion			
1628	1	2985.65		0.7025	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	389-D	0.0000139*	73.9	369		0.58	0.7284	N	70		initial age disturbed by later metamorphism		7-POINT WHOLE-ROCK ISOCHRON	AN AGE OF 3250 M.Y. IS OBTAINED USING AN AVERAGED WEIGHTED SR CONTENT FOR 9 WHOLE-ROCK SAMPLES (6 LOCALITIES--INCLUDING THIS SAMPLE) AND ASSUMING AN INITIAL 87SR/86SR OF 0.700 FOR THE MORTON GNEISS
1628	2	3328.26		0.7	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	389-D	0.0000139*	73.9	369		0.58	0.7284	N			age of metamorphic crystallization			
1629	1	2985.65		0.7025	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	390-L	0.0000139*	216	399		1.567	0.7612	N	70		initial age disturbed by later metamorphism		7-POINT WHOLE-ROCK ISOCHRON	AN AGE OF 3250 M.Y. IS OBTAINED USING AN AVERAGED WEIGHTED SR CONTENT FOR 9 WHOLE-ROCK SAMPLES (6 LOCALITIES--INCLUDING THIS SAMPLE) AND ASSUMING AN INITIAL 87SR/86SR OF 0.700 FOR THE MORTON GNEISS
1629	2	2701.76		0.7	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	390-L	0.0000139*	216	399		1.567	0.7612	N			initial age disturbed by later metamorphism			
1629	3	2639.76		0.71	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	390-L	0.0000147*	263	501		1.52	0.758	N	71		initial age disturbed by later metamorphism		10-POINT WHOLE-ROCK-PLAGIOCLASE-K-FELDSPAR ISOCHRON	
1629	4	2318.85		0.71	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	390-L	0.0000147*	263	501		1.52	0.758	N			initial age disturbed by later metamorphism		SUPPOSEDLY A 2-POINT WHOLE-ROCK-KFELDSPAR ISOCHRON	
1630	1	2525.56		0.702	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-57 K-F	0.0000139*	255	491		1.5	0.755	N	77		age of intrusion		6-POINT WHOLE-ROCK-K-FELDSPAR ISOCHRON	
1631	1	2525.56		0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	406 WR	0.0000139*	206	528		1.13	0.741	N	77		age of intrusion		6-POINT WHOLE-ROCK-K-FELDSPAR ISOCHRON	
1631	2	2525.56		0.702	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	406 K-F	0.0000139*	244	504		1.4	0.756	N	77		age of intrusion		6-POINT WHOLE-ROCK-K-FELDSPAR ISOCHRON	
1638	1	222.57	15	0.706	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1737	0.0000147*	392.66	17.9	0.35			N			minimum age of intrusion			
1639	1	253.62	10	0.706	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1764	0.0000147*	2763.7	4.7	2.84			N			age of intrusion			
1640	1	201.86	40	0.706	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	688	0.0000147*	238.7	49.7	0.19			N			age of later metamorphism		
1641	1	201.86	60	0.706	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1325	0.0000147*	299.01	94.8	0.25			N			age of later metamorphism		
1643	1	227.74	15	0.706	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1958	0.0000147*	382.77	21.2	0.35			N			age of later metamorphism		
1644	1	310.56	55	0.706	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1337	0.0000147*	273.66	84.5	0.35			N			age meaning uncertain (geologic factors)		
1644	2	222.57	15	0.706	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1337	0.0000147*	769.07	25.7	0.69			N			age of later metamorphism		
1645	1	289.86	30	0.706	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1902	0.0000147*	495.06	62.4	0.58			N			age of later metamorphism		
1646	1	419.26	20	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	659	0.0000147*	224	111.4		5.83	0.738	N	80		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON
1647	1	419.26	20	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1917	0.0000147*	202	76.3		7.68	0.753	N	80		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON
1648	1	419.26	20	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1-Mar	0.0000147*	141	159.7		2.56	0.721	N	80		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON
1649	1	419.26	20	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	6-Mar	0.0000147*	175	65.9		7.7	0.75	N	80		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON
1650	1	357.14	15	0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1105	0.0000147*	312	19.2		47.1	0.939	N	81		age of intrusion		3-POINT WHOLE-ROCK ISOCHRON
1651	1	372.67	10	0.706	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1709	0.0000147*	1877.5	4.8	2.81			N			age of intrusion		
1651	2	357.14	15	0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1709	0.0000147*	328	14.5		65.8	1.036	N	81		age of intrusion		3-POINT WHOLE-ROCK ISOCHRON
1652	1	357.14	15	0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1710	0.0000147*	386	14.2		78.8	1.1	N	81		age of intrusion		3-POINT WHOLE-ROCK ISOCHRON
1653	1	419.26	20	0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1912	0.0000147*	333	12		80.5	1.21	N	82		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON
1654	1	419.26	20	0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1927	0.0000147*	180	50.3		10.4	0.779	N	82		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON
1655	1	419.26	20	0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1901	0.0000147*	330	24		39.8	0.913	N	82		age of intrusion		A 4-POINT WHOLE-ROCK ISOCHRON	
1656	1	419.26	20	0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2075	0.0000147*	328	35.4		26.8	0.848	N	82		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON	
1656	2	295.03	15	0.73	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	2075	0.0000147*	785	4.62		492	2.807	N	83		age of later metamorphism		3-POINT WHOLE-ROCK-MINERAL ISOCHRON	
1656	3	295.03	15	0.73	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	2075	0.0000147*	701	57.1		35.5	0.872	N	83		age of later metamorphism		3-POINT WHOLE-ROCK-MINERAL ISOCHRON	
1656	4	295.03	15	0.73	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	2075	0.0000147*	328	35.4		26.8	0.848	N	83		age of later metamorphism		3-POINT WHOLE-ROCK-MINERAL ISOCHRON	
1657	1	1272.57			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1 (LS-108)	0.0000139*	1220		6.25						initial age disturbed by later metamorphism			CRYSTALLIZATION AGE IS AROUND 1800 M. Y.
1657	2	1644.55			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1 (LS-108)	0.0000139*	558		3.74			N			initial age disturbed by later metamorphism			CRYSTALLIZATION AGE IS AROUND 1800 M.Y.
1657	3	1739.14			K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1 (LS-108)	0.0000147*	417		2.78		1680				initial age disturbed by later metamorphism			CRYSTALLIZATION AGE IS AROUND 1800 M.Y.
1658	1	1341.09			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	2 (LS-47)	0.0000139*	622		3.38						initial age disturbed by later metamorphism			CRYSTALLIZATION AGE IS AROUND 1950 M.Y.
1658	2	1644.55			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	2 (LS-47)	0.0000139*	217		1.45						initial age disturbed by later metamorphism			CRYSTALLIZATION AGE IS AROUND 1950 M.Y.
1658	3	1595.61			K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	2 (LS-47)	0.0000139*	276		1.79						initial age disturbed by later metamorphism			CRYSTALLIZATION AGE IS AROUND 1950 M.Y.
1661	1	1390.04			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	5(LS-48)	0.0000139*	53.4		0.3						initial age disturbed by later metamorphism	CONSIDERABLE ALTERATION TO CHLORITE AND MUSCOVITE		CRYSTALLIZATION AGE IS PROBABLY AROUND 1800 M.Y.
1662	1	1262.78			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	6 (LS-49)	0.0000139*	277		1.42						initial age disturbed by later metamorphism	CONTAINS INCLUSIONS OF SPHENE AND ZIRCON		CRYSTALLIZATION AGE IS PROBABLY AROUND 1800 M.Y.
1663	1	1390.04			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	7 (LS-128)	0.0000139*	2580		14.5						age meaning uncertain (geologic factors)			AGE IS AROUND 1800 M.Y.
1663	2	1771.81			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	7 (LS-128)	0.0000139*	1470		10.58						age of intrusion			
1663	3	1673.92			K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	7 (LS-128)	0.0000139*	1010		6.9						initial age disturbed by later metamorphism			AGE IS AROUND 1800 M.Y.
1664	1	1321.52			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8A (LS-42A)	0.0000139*	1720		9.25						initial age disturbed by later metamorphism			CRYSTALLIZATION AGE IS AROUND 1900 M.Y.
1664	2	1840.33			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8A (LS-42A)	0.0000139*	1490		11.14						age of intrusion			
1664	3	1859.91			K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8A (LS-42A)	0.0000139*	134		1.02						age of intrusion			
1665	1	1644.55			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8B (LS-42B)	0.0000139*	2010		13.51						initial age disturbed by later metamorphism		AGE CALCULATED BY COMPILER	INITIAL AGE IS ABOUT 2700 M.Y.
1665	2	1350.88			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8B (LS-42B)	0.0000139*	1070		5.82						initial age disturbed by later metamorphism			INITIAL AGE IS ABOUT 2700 M.Y.
1666	1	1585.82			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	9 (LS-112)	0.0000139*	693		4.46						age not evaluated			
1667	1	1536.87			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	10 (LS-44A)	0.0000139*	426.1		2.66						age not evaluated	CONSIDERABLE CHLORITE PRESENT		
1667	2	1615.19			K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	10 (LS-44A)	0.0000139*	254		1.67						minimum age of intrusion			
1668	1	1321.52			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	11 (LS-40C)	0.0000139*	366		1.99						initial age disturbed by later metamorphism			
1670	1	1282.36			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	13 (LS-40H)	0.0000139*	364		1.88						initial age disturbed by later metamorphism			
1673	1	1458.56			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	16 (LS-129B)	0.0000139*	397.5		2.35						initial age disturbed by later metamorphism			
1674	1	1536.87			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	17 (LS-129A)	0.0000139*	267		1.66						initial age disturbed by later metamorphism			
1674	2	1585.82			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	17 (LS-129A)	0.0000139*	154		0.99						initial age disturbed by later metamorphism			
1675	1	1360.67			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	18 (LS-40A)	0.0000139*	389		2.15						initial age disturbed by later metamorphism			
1676	1	1282.36			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	19(LS-129C)	0.0000139*	523		2.71						initial age disturbed by later metamorphism			
1677	1	1184.47	200		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	20 (LS-40F)	0.0000139*	112		0.54						initial age disturbed by later metamorphism			
1678	1	1556.45			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	21 (LS-110)	0.0000139*	237		1.5						initial age disturbed by later metamorphism			
1678	2	1703.29			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	21 (LS-110)	0.0000139*	129		0.89						initial age disturbed by later metamorphism			
1679	1	1977.38			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	22 (LS-111)	0.0000139*	232		1.87						initial age disturbed by later metamorphism			
1680	1	1507.51			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	23 (LS-43A)	0.0000139*	124		0.76						initial age disturbed by later metamorphism			INITIAL AGE IS ABOUT 2700 M.Y.
1681	1	1360.67			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	24 (LS-115)	0.0000139*	488.7		2.69						initial age disturbed by later metamorphism			INITIAL AGE IS ABOUT 2700 M.Y.
1681	2	2251.47			K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	24 (LA-115)	0.0000139*	110		1.01						initial age disturbed by later metamorphism			INITIAL AGE IS ABOUT 2700 M.Y.
1682	1	1086.58			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	25A (LS-114A)	0.0000139*	756		3.32						initial age disturbed by later metamorphism			INITIAL AGE IS ABOUT 2700 M.Y.
1682	2	1536.87			K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	25A (LA-114A)	0.0000139*	223		1.39						initial age disturbed by later metamorphism			INITIAL AGE IS ABOUT 2700 M.Y.
1684	1	1556.45			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	29 (LS-126)	0.0000139*	411		2.6						initial age disturbed by later metamorphism			INITIAL AGE IS AROUND 2700 M.Y.
1684	2	2838.81			K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	29 (LS-126)	0.0000139*	229		2.67						age not evaluated			INITIAL AGE IS AROUND 2700 M.Y.
1685	1	2339.57			K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	30 (LS-109)	0.0000139*	123		1.18						initial age disturbed by later metamorphism			INITIAL AGE IS PROBABLY AROUND 2700 M.Y.
1686	1	1801.18			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	31 (LS-25C)	0.0000139*	2021		14.8						age of intrusion			
1688	1	306.4	22	0.731	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	74	0.0000139*	138.9	23		17.51	0.8008	N	84	Zartman (1977)	initial age disturbed by later metamorphism		A 10-POINT WHOLE-ROCK ISOCHRON	
1689	1	306.4	22	0.731	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	95	0.0000139*	155.5	10.7		41.9	0.927	N	86	Zartman (1977)	initial age disturbed by later metamorphism		10-POINT WHOLE-ROCK ISOCHRON	
1690	1	306.4	22	0.731	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	96	0.0000139*	155.9	7.84		57.56	0.977	N	86	Zartman (1977)	initial age disturbed by later metamorphism		10-POINT WHOLE-ROCK ISOCHRON	
1691	1	306.4	22	0.731	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	97	0.0000139*	149.3	11.1		38.84	0.892	N	86	Zartman (1977)	initial age disturbed by later metamorphism		10-POINT WHOLE-ROCK ISOCHRON	
1692	1	306.4	22	0.731	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	98	0.0000139*	161.1	14.1		33.09	0.881	N	86	Zartman (1977)	initial age disturbed by later metamorphism		10-POINT WHOLE-ROCK ISOCHRON
1693	1	306.4	22	0.731	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	210	0.0000139*	167.1	5.05		95.85	1.146	N	86	Zartman (1977)	initial age disturbed by later metamorphism		10-POINT WHOLE-ROCK ISOCHRON
1694	1	306.4	22	0.731	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	211	0.0000139*	150	11.8		36.93	0.89	N	86	Zartman (1977)	initial age disturbed by later metamorphism		10-POINT WHOLE-ROCK ISOCHRON
1695	1	306.4	22	0.731	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	212	0.0000139*	153.7	17.5		25.37	0.8348	N	86	Zartman (1977)	initial age disturbed by later metamorphism		10-POINT WHOLE-ROCK ISOCHRON
1696	1	306.4	22	0.731	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	78	0.0000139*	217.4	17.1		36.79	0.89	N	87	Zartman (1977)	initial age disturbed by later metamorphism		10-POINT WHOLE-ROCK ISOCHRON
1697	1	306.4	22	0.731	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	213	0.0000139*	149.3	14.8		29.14	0.867	N	86	Zartman (1977)	initial age disturbed by later metamorphism		10-POINT WHOLE-ROCK ISOCHRON
1698	1	425.82	6	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	163	0.0000139*	110.2	37.1		8.6	0.7556	N	88	Zartman (1977)	age of intrusion		11-POINT WHOLE-ROCK ISOCHRON
1699	1	425.82	6	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	164	0.0000139*	118.4	31.3		10.96	0.7664	N	88	Zartman (1977)	age of intrusion		11-POINT WHOLE-ROCK ISOCHRON
1700	1	425.82	6	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	165A	0.0000139*	264.8	8.39		91.32	1.253	N	88	Zartman (1977)	age of intrusion		11-POINT WHOLE-ROCK ISOCHRON
1701	1	425.82	6	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	165C	0.0000139*	229.1	5.86		113.1	1.386	N	88	Zartman (1977)	age of intrusion		11-POINT WHOLE-ROCK ISOCHRON
1702	1	425.82	6	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	165D	0.0000139*	227.3	5.56		118.4	1.408	N	88	Zartman (1977)	age meaning uncertain (geologic factors)		11-POINT WHOLE-ROCK ISOCHRON
1703	1	425.82	6	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	166	0.0000139*	160	5.84		79.3	1.192	N	88	Zartman (1977)	age meaning uncertain (geologic factors)		11-POINT WHOLE-ROCK ISOCHRON
1705	1	425.82	6	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	168	0.0000139*	110	44.8		7.1	0.7455	N	88	Zartman (1977)	age of intrusion		11-POINT WHOLE-ROCK ISOCHRON
1706	1	425.82	6	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	169	0.0000139*	102.5	9.59		30.93	0.891	N	88	Zartman (1977)	age of intrusion		11-POINT WHOLE-ROCK ISOCHRON
1707	1	425.82	6	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	170	0.0000139*	78.3	57.3		3.96	0.7269	N	88	Zartman (1977)	age meaning uncertain (geologic factors)		11-POINT WHOLE-ROCK ISOCHRON
1708	1	425.82	6	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	260	0.0000139*	154.4	16.3		27.36	0.871	N	88	Zartman (1977)	age of intrusion		11-POINT WHOLE-ROCK ISOCHRON
1709	1	359.26	24	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	60A	0.0000139*	140.7	14.7		27.79	0.8465	N	89	Zartman (1977)	age of intrusion		6-POINT WHOLE-ROCK ISOCHRON
1710	1	359.26	24	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	60B	0.0000139*	135.4	14.7		26.61	0.8465	N	89	Zartman (1977)	age of intrusion		6-POINT WHOLE-ROCK ISOCHRON
1711	1	359.26	24	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	90	0.0000139*	107.6	17.9		17.43	0.7967	N	89	Zartman (1977)	age of intrusion		6-POINT WHOLE-ROCK ISOCHRON
1712	1	359.26	24	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	91	0.0000139*	117.1	27.3		12.41	0.7741	N	89	Zartman (1977)	age of intrusion		6-POINT WHOLE-ROCK ISOCHRON
1713	1	359.26	24	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	92	0.0000139*	32.8	68.9		1.38	0.7163	N	89	Zartman (1977)	age of intrusion		6-POINT WHOLE-ROCK ISOCHRON
1714	1	359.26	24	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	171	0.0000139*	119.9	74.9		4.64	0.7289	N	89	Zartman (1977)	age of intrusion		6-POINT WHOLE-ROCK ISOCHRON
1715	1	451.27	23	0.705	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	88-1	0.0000139*	256.3	72.1	0.47			N		Zartman (1977)	minimum age of intrusion		
1715	2	482.6	21	0.705	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	88-2	0.0000139*	255.3	61.9	0.5			N		Zartman (1977)	age of intrusion		
1716	1	450.29	12	0.705	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	160	0.0000139*	339.8	11.1	0.62			N		Zartman (1977)	age of intrusion		
1724	1	1321.52			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	26 (LS-54)	0.0000139*	1071		5.72						initial age disturbed by later metamorphism		
1724	2	1468.35			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	26 (LS-54)	0.0000139*	339		2.02						initial age disturbed by later metamorphism		
1724	3	1497.72			K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	26 (LS-54)	0.0000139*	111		0.67						initial age disturbed by later metamorphism		
1725	1	1321.52			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	27 (LS-53)	0.0000139*	246		1.32						initial age disturbed by later metamorphism		
1726	1	1331.3			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	28 (LS-125)	0.0000139*	569		3.06						initial age disturbed by later metamorphism		
1732	1	1677.02			K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	OSA	0.0000147*	1020	9.2	6.98			N			initial age disturbed by later metamorphism		
1829	1		8		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ME-8	1.47E-05	311		0.54			T			age of intrusion		
1833	1		7		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ME-12	1.47E-05	361		0.56			T			minimum age of metamorphic crystallization		
1835	1		8		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ME-14	1.47E-05	564		0.9			T			age not evaluated		
1836	1		8		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ME-15	1.47E-05	1028		1.68			T			age of intrusion		
1837	1		7		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ME-16	1.47E-05	791		1.2			T			initial age disturbed by later metamorphism		
1839	1		5		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ME-18	1.47E-05	1850		1.8			T			initial age disturbed by later metamorphism		
1839	2	262.94	5		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ME-18	0.0000147*	869		0.92			T			age of intrusion		
1848	1		7		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ME-28A	1.47E-05	643		0.99			T			minimum age of intrusion		87SR VALUE IS AVERAGE OF REPLICATE ANALYSES
1850	1		7		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ME-30	1.47E-05	516		0.76			T			minimum age of intrusion		
1852	1		7		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ME-32	1.47E-05	633		0.95			T			minimum age of intrusion		
1853	1		7		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ME-33	1.47E-05	1102		1.66			T			minimum age of intrusion		
1854	1		7		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ME-34	1.47E-05	781		1.2			T			minimum age of intrusion		
1859	1		7		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ME-39	1.47E-05	1834		2.55			T			age not evaluated		
1862	1		7		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ME-42	1.47E-05	1201		1.85			T			age of intrusion		
1863	1		7		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ME-43	1.47E-05	1085		1.49			T			initial age disturbed by later metamorphism		
1863	2	403.73	8		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ME-43	0.0000147*	753		1.23						minimum age of intrusion		DECAY CONSTANT: LAMBDA = 1.475 E-11/YR
1864	1		10		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NH-1	1.47E-05	431		0.41			T			initial age disturbed by later metamorphism		
1864	2	548.66			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NH-1	0.0000147*	120		0.27			T			age meaning uncertain (analysis questionable)		
1865	1				muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NH-2	1.47E-05	243		0.34			T			age meaning uncertain (analysis questionable)		RUBIDIUM AND STRONTIUM VALUES ARE AVERAGES OF REPLICATE ANALYSES
1867	1		7		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NH-5	1.47E-05	579		0.8			T			minimum age of intrusion		
1868	1		5		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NH-5	1.47E-05	1268		1.36			T			initial age disturbed by later metamorphism		 STRONTIUM VALUES ARE AVERAGES OF REPLICATE ANALYSES
1870	1		5		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NH-7	1.47E-05	918		1.03			T			initial age disturbed by later metamorphism		 STRONTIUM VALUES ARE AVERAGES OF REPLICATE ANALYSES
1870	2	326.09	6		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NH-7	0.0000147*	622		0.81			T			minimum age of intrusion		
1870	3	320.91			K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NH-7	0.0000147*	375		0.48			T			age meaning uncertain (analysis questionable)		STRONTIUM VALUES ARE AVERAGES OF REPLICATE ANALYSES
1873	1		6		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	VT-4	1.47E-05	654		0.86			T			age not evaluated		REPLICATE SR ANALYSES
1874	1		10		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	VT-6	1.47E-05	604		0.75			T			initial age disturbed by later metamorphism		
1875	1				muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	VT-7	1.47E-05	385		1.18			T			age of metamorphic crystallization		
1875	2	703.94			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	VT-7	0.0000147*	389		1.14			T			age of metamorphic crystallization		
1877	1		19		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	VT-10	1.47E-05	926		3.57			T			age of metamorphic crystallization		
1886	1	983.79	30	0.7087	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	822-1A	0.0000139*	106	89.6		3.41	0.756	T	92		age of intrusion		A 3-POINT WHOLE-ROCK ISOCHRON
1887	1	983.79	30	0.7087	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	822-2	0.0000139*	105	49.2		6.18	0.7957	T	92		age of intrusion		A 3-POINT WHOLE-ROCK ISOCHRON
1888	1	983.79	30	0.7087	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	822-3	0.0000139*	144	145		2.87	0.7496	T	92		age of intrusion		A 3-POINT WHOLE-ROCK ISOCHRON
1889	1	1091.47	14	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4366	0.0000139*	7.48	334.4		0.064	0.7058	T	94		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON; RB AND SR VALUES ARE AVERAGES OF REPLICATE ANALYSES
1890	1	1091.47	14	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R1231	0.0000139*	6.8	345.7		0.057	0.7066	T	94		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON
1891	1	1091.47	14	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4362	0.0000139*	31.5	402.4		0.227	0.7091	T	94		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON
1892	1	1091.47	14	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4365	0.0000139*	5.3	36.3		0.423	0.7121	T	94		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON
1893	1	1091.47	14	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4361	0.0000139*	112.8	309		1.059	0.7227	T	94		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON; RB AND SR VALUES ARE AVERAGES OF REPLICATE ANALYSES
1894	1	1091.47	14	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4364A	0.0000139*	97.6	120.2		2.359	0.7425	T	94		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON
1894	2	1091.47	14	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4364B	0.0000139*	99.4	118		2.447	0.7432	T	94		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON
1895	1	1068.96	15	0.7046	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4369	0.0000139*	40.9	215.6		0.549	0.7121	T	93		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON; RB AND SR VALUES ARE AVERAGES OF REPLICATE ANALYSES
1896	1	1068.96	15	0.7046	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4371	0.0000139*	51	190.3		0.78	0.7172	T	93		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON; RB AND SR VALUES ARE AVERAGES OF REPLICATE ANALYSES.
1897	1	1068.96	15	0.7046	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4372	0.0000139*	125.1	158.1		2.29	0.74	T	93		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON
1898	1	1068.96	15	0.7046	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4373	0.0000139*	149.3	84		5.16	0.7833	T	93		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON; RB AND SR VALUES ARE AVERAGES OF REPLICATE ANALYSES
1910	1	2457.04			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SH-48WR	0.0000139*	45.8	743		0.178	0.7072	N			initial age disturbed by later metamorphism		7-POINT WHOLE-ROCK ISOCHRON (SECONDARY ISOCHRON)
1911	1	2652.82	560	0.7009	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SH-49WR	0.0000139*	23.5	986		0.0688	0.7036	N	95		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON
1912	1	2652.82	560	0.7009	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SS-4WR	0.0000139*	24.9	983		0.0731	0.7037	N	95		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON
1912	2				apatite		SS-4AP	0.0000139*	0.47	594		0.003	0.7007	N					NO AGE CALCULATED
1912	3				sphene		SS-4SP	0.0000147*	0.39	81.6		0.0106	0.7023	N					NO AGE CALCULATED
1912	4				hornblende		SS-4HO	0.0000147*	3.33	100.4		0.0957	0.7052	N					NO AGE CALCULATED
1912	5				plagioclase		SS-4PL	0.0000147*	19.1	1152		0.0478	0.7028	N					NO AGE CALCULATED	
1913	1	3475.09			microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	SS-4 MI	0.0000139*	158	2718		0.1668	0.7095	N						AGE TOO OLD; RB HAS BEEN LOST OR 87SR HAS BEEN ADDED
1913	2	2633.24		0.7012	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	SS-4 BI	0.0000139*	185	27		19.8	1.456	N			age of intrusion			
1913	3				epidote		SS-4 EP	0.0000147*	3.51	3100		0.00327	0.7022	N					NO AGE CALCULATED	
1914	1	2515.77		0.7012	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-79 MI	0.0000139*	321	270		3.44	0.8261	N						AGE IS TOO YOUNG
1914	2	2535.35		0.7012	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-79 MI	0.0000139*	317	265		3.49	0.829	N						AGE IS TOO YOUNG
1915	1	2613.66		0.7012	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	SH-70WR	0.0000139*	147	317		1.342	0.7519	N			age of intrusion			
1915	2	2564.72			whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	SH-70WR	0.0000139*	147	317		1.342	0.7519	N	96		minimum age of intrusion		4-POINT (WHOLE-ROCK)-MINERAL ISOCHRON	
1916	1	2564.72			sericite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-328SE	0.0000139*	277	35.3		22.6	1.54	N	96		minimum age of intrusion		4-POINT (WHOLE-ROCK)-MINERAL ISOCHRON	
1916	2	2564.72		0.7012	sericite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-328SE	0.0000139*	277	35.3		22.6	1.54	N			minimum age of intrusion			
1916	3	2732.93		0.7012	sericite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-328SE	0.0000147*	274	34.1		23.2	1.57	N			minimum age of intrusion			
1916	4	2598.35		0.7012	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-328MI	0.0000147*	470	43.7		31	1.8	N			age not evaluated			
1916	5	2722.58		0.7012	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-328MI	0.0000147*	470	44.7		30.3	1.829	N			minimum age of intrusion			
1917	1	256.47			sericite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-328SE	0.0000139*	274	34.1		23.2	1.57	N	96		minimum age of intrusion		4-POINT (WHOLE-ROCK)-MINERAL ISOCHRON	
1917	2	2564.72			microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	KA-328 MI	0.0000139*	470	44.7		30.3	1.829	N	96		minimum age of intrusion		4-POINT (WHOLE-ROCK)-MINERAL ISOCHRON	
1925	1	2584.3	135		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	3	0.0000139*	371		3.93						age of intrusion			
2014	1	455.19	50	0.7149	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	L-1109A	0.0000139*	132.6	59.28		6.49	0.7589	T	98		age of metamorphic crystallization		10-POINT WHOLE-ROCK ISOCHRON
2014	2	244.73	7	0.7149	biotite	Conventional Rb-Sr (measured initial 87Sr/86Sr)	L-1109A	0.0000139*	445.3	3.92		370.3	1.982	T			age of later metamorphism	MODERATELY-ALTERED BIOTITE; CONCENTRATE CONTAINS 5% CHLORITE AND IMPURITIES	RB AND SR VALUES ARE AVERAGES OF REPLICATE ANALYSES
2016	1				whole rock		L-1127	0.0000139*	167.5	32.18		15.2	0.8011	N					NO AGE CALCULATED
2017	1	455.19	50	0.7149	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	L-1128	0.0000139*	118.4	106.9		3.21	0.7397	N	98		age of metamorphic crystallization		10-POINT WHOLE-ROCK ISOCHRON
2017	2				plagioclase		L-1128	0.0000139*	18.09	93.22		0.629	0.7291	N				PLAGIOCLASE AND QUARTZ	NO AGE CALCULATED
2017	3				K feldspar		L-1128	0.0000147*	188.4	407.3		13.4	0.8053	N					NO AGE CALCULATED
2017	4	253.62	10	0.7149	muscovite	Conventional Rb-Sr (measured initial 87Sr/86Sr)	L-1128	0.0000147*	269.8	16.59		47.69	0.877	N			age of later metamorphism		RB VALUE IS AVERAGE OF REPLICATE ANALYSES
2018	1	455.19	50	0.7149	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	L-1129	0.0000139*	95.43	166.5		1.66	0.7301	N	98		age of metamorphic crystallization		10-POINT WHOLE-ROCK ISOCHRON; RB AND SR VALUES ARE AVERAGES OF REPLICATE ANALYSES
2019	1	455.19	50	0.7149	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	L-1131	0.0000139*	127	104.2		3.53	0.737	N	98		age of metamorphic crystallization		10-POINT WHOLE-ROCK ISOCHRON
2020	1	455.19	50	0.7149	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	L-1132	0.0000139*	68.64	240.4		0.826	0.7163	N	98		age of metamorphic crystallization		10-POINT WHOLE-ROCK ISOCHRON
2021	1	455.19	50	0.7149	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	L-1133	0.0000139*	184.9	84.99		6.31	0.7563	N	98		age of metamorphic crystallization		10-POINT WHOLE-ROCK ISOCHRON
2022	1	455.19	50	0.7149	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	L-1134	0.0000139*	168.9	40.4		12.28	0.7914	N	98		age of metamorphic crystallization		10-POINT WHOLE-ROCK ISOCHRON
2023	1	455.19	50	0.7149	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	L-1135	0.0000139*	148.6	56.21		7.68	0.765	N	98		age of metamorphic crystallization		10-POINT WHOLE-ROCK ISOCHRON
2024	1	455.19	50	0.7149	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	L-1136	0.0000139*	103.9	44.03		6.85	0.7619	N	98		age of metamorphic crystallization		10-POINT WHOLE-ROCK ISOCHRON; RB AND SR VALUES ARE AVERAGES OF REPLICATE ANALYSES
2025	1	455.19	50	0.7149	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	L-1137	0.0000139*	77.8	413.1		0.545	0.714	N	98		age of metamorphic crystallization		10-POINT WHOLE-ROCK ISOCHRON
2026	1	243.75	5	0.7069	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	L-1138	0.0000139*	296.9	500.4		1.71	0.7122	N	99		age of intrusion		6-POINT WR-MINERAL ISOCHRON; RB AND SR VALUES ARE AVERAGES OF REPLICATE ANALYSES
2026	2	243.75	5	0.7069	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	L-1138	0.0000139*	97.28	396.9		0.708	0.7089	N	99		age of intrusion	FINE FRACTION; PLUS QUARTZ	6-POINT WR-MINERAL ISOCHRON	
2026	3	257.76	5	0.7069	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	L-1138	0.0000147*	86.25	346.7		0.719	0.7088	N	99		age of intrusion	FINE FRACTION; PLUS QUARTZ	6-POINT WR-MINERAL ISOCHRON	
2026	4	257.76	5	0.7069	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	L-1138	0.0000147*	553.9	692.3		2.31	0.7153	N	99		age of intrusion	FINE FRACTION	6-POINT WR-MINERAL ISOCHRON	
2026	5	257.76	5	0.7069	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	L-1138	0.0000147*	603.1	779.6		2.24	0.7149	N	99		age of intrusion		6-POINT WR-MINERAL ISOCHRON	
2027	1	243.75	5	0.7069	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	L-1138	0.0000139*	944.8	21.78		130.8	1.16	T	99		age of intrusion		6-POINT WR-MINERAL ISOCHRON; RB AND SR VALUES ARE AVERAGES OF REPLICATE ANALYSES	
2028	1	283.88	68	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	L-1138	0.0000139*	296.9	500.4		1.71	0.7122	N					5-POINT (WHOLE-ROCK)-MINERAL ISOCHRON; RB AND SR VALUES ARE AVERAGES OF REPLICATE ANALYSES	AGE IS SLIGHTLY TOO OLD
2028	2	283.88	68	0.706	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	L-1138	0.0000139*	97.28	396.9		0.708	0.7089	T				"FINE FRACTION, PLUS QUARTZ"	5-POINT WR-MINERAL ISOCHRON	AGE IS SLIGHTLY TOO OLD
2028	3	300.21	68	0.706	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	L-1138	0.0000147*	86.25	346.7		0.719	0.7088	T				"FINE FRACTION, PLUS QUARTZ"	5-POINT WR-MINERAL ISOCHRON	AGE IS SLIGHTLY TOO OLD
2028	4	300.21	68	0.706	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	L-1138	0.0000147*	553.9	692.3		2.31	0.7153	T				FINE FRACTION	5-POINT WR-MINERAL ISOCHRON	AGE IS SLIGHTLY TOO OLD
2028	5	300.21	68	0.706	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	L-1138	0.0000147*	603.1	779.6		2.24	0.7149	T					5-POINT WR-MINERAL ISOCHRON	AGE IS SLIGHTLY TOO OLD
2033	1	193.58	4	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	5	0.0000147*	404	43.2		27.1	0.779	T	100		age of intrusion		5-POINT WR ISOCHRON	
2034	1	193.58	4	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	6	0.0000147*	355	10.9		94	0.965	T	100		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
2039	1	113.87	7	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	11	0.0000147*	193	140		4.01	0.7122	T	101		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
2040	1	113.87	7	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	12	0.0000147*	226	99.3		6.57	0.7173	T	101		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
2044	1	193.58	4	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	16	0.0000147*	385	54.2		20.6	0.766	T	100		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
2045	1	193.58	4	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	17	0.0000147*	464	29.6		45.4	0.83	T	100		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
2046	1	193.58	4	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	18	0.0000147*	466	38.8		34.8	0.799	T	100		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
2047	1	113.87	7	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	19	0.0000147*	179	175		2.96	0.7107	T	101		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
2048	1	113.87	7	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	20	0.0000147*	241	87.3		8	0.7188	T	101		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
2049	1	113.87	7	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	21	0.0000147*	237	99.5		6.91	0.7174	T	101		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
2052	1	390	15		whole rock		3	not given									age of intrusion	SAMPLE NUMBER 3060	NO ANALYTICAL DATA GIVEN	"BIOTITE K-AR AGE IS 325 +/- 10 M.Y. (ZARTMAN AND OTHERS, 1970)"
2070	1	356.32		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	R-4700	0.0000139*	157	11		42.3	0.9193	T			minimum age of intrusion		RB AND SR VALUES ARE AVERAGES OF 3 DETERMINATIONS	
2070	2	357.3	7	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-4700	0.0000139*	157	11		42.3	0.9193	T	102		minimum age of intrusion		RB AND SR VALUES ARE AVERAGES OF 3 DETERMINATIONS; 5-POINT WHOLE-ROCK ISOCHRON	
2071	1	332.83		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	R4770	0.0000139*	164	5.08		97.6	1.1663	T					SR VALUE IS AVERAGE OF 3 DETERMINATIONS	AGE IS TOO YOUNG
2072	1	350.45		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	R5064	0.0000139*	190	9.8		57.6	0.9919	T			minimum age of intrusion		RB AND SR VALUES ARE AVERAGES OF 3 DETERMINATIONS	
2072	2	357.3	7	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-5064	0.0000139*	190	980		57.6	0.9919	T	102		minimum age of intrusion		TRIPLICATE RB AND SR ANALYSES; 5-POINT WHOLE-ROCK ISOCHRON	
2073	1	359.26		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	R-5065	0.0000139*	158	8.21		57.3	0.9977	T			minimum age of intrusion		RB AND SR VALUES ARE AVERAGES OF 2 DETERMINATIONS	
2073	2	357.3	7	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5065	0.0000139*	158	8.21		57.3	0.9977	T	102		minimum age of intrusion		RB AND SR VALUES ARE AVERAGES OF 2 DETERMINATIONS; 5-POINT WHOLE-ROCK ISOCHRON	
2074	1	361.21		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	R5067	0.0000139*	138	15.8		25.6	0.8363	T			minimum age of intrusion		RB AND SR VALUES ARE AVERAGES OF 2 DETERMINATIONS	
2074	2	357.3	7	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5067	0.0000139*	138	15.8		25.6	0.8363	T	102		minimum age of intrusion		RB AND SR VALUES ARE AVERAGES OF 2 DETERMINATIONS; 5-POINT WHOLE-ROCK ISOCHRON	
2075	1	341.64		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ODC-37	0.0000139*	91.8	15.5		17.3	0.7889	T						AGE IS TOO YOUNG
2075	2	357.3	7	0.703	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-37	0.0000139*	91.8	15.5		17.3	0.7889	T	102		minimum age of intrusion		5-POINT W-R ISOCHRON	
2076	1	370.02		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	R4701	0.0000139*	201	80.3		7.25	0.7431	T			age not evaluated		RB AND SR VALUES ARE AVERAGES OF 2 DETERMINATIONS	
2076	2	276.05	8	0.717	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4701	0.0000139*	201	80.3		7.25	0.7431	T	103				RB AND SR VALUES ARE AVERAGES OF 2 DETERMINATIONS; 12-POINT WHOLE-ROCK ISOCHRON	AGE IS ANOMALOUSLY LOW
2077	1	276.05	8	0.717	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4702	0.0000139*	141	117		3.5	0.7309	T	103				RB AND SR VALUES ARE AVERAGES OF TWO DETERMINATIONS; 12-POINT WHOLE-ROCK ISOCHRON	AGE IS ANOMALOUSLY LOW
2078	1	271.16		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	R4772	0.0000139*	164	4.72		105	1.1095	T					DUPLICATE RB- AND TRIPLICATE SR-ANALYSES	AGE IS TOO YOUNG
2079	1	289.75		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ODC-27	0.0000139*	212	8.08		78.3	1.0268	T			age not evaluated			
2079	2	276.05	8	0.717	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-27	0.0000139*	212	8.08		78.3	1.0268	T	103				12-POINT WHOLE-ROCK ISOCHRON	AGE IS ANOMALOUSLY LOW
2080	1	286.82		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ODC-29	0.0000139*	209	5.75		109.8	1.1515	T			age not evaluated			
2080	2	276.05	7	0.717	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-29	0.0000139*	209	5.75		109.8	1.1515	T	103				12-POINT WHOLE-ROCK ISOCHRON	AGE IS ANOMALOUSLY LOW
2081	1	316.18		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ODC-30	0.0000139*	213	34.7		17.9	0.7854	T			age not evaluated			
2081	2	276.05	8	0.717	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-30	0.0000139*	213	34.7		17.9	0.7854	T	103				12-POINT WHOLE-ROCK ISOCHRON	AGE IS ANOMALOUSLY LOW
2082	1	276.05	8	0.717	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-31	0.0000139*	145	119		3.53	0.7274	T	103				12-POINT WHOLE-ROCK ISOCHRON	AGE IS ANOMALOUSLY LOW
2083	1	328.91		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ODC-32	0.0000139*	186	41.9		12.9	0.7652	T			age not evaluated			
2083	2	276.05	8	0.717	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-32	0.0000139*	186	41.9		12.9	0.7652	T	103				12-POINT WHOLE-ROCK ISOCHRON	AGE IS ANOMALOUSLY LOW
2084	1	404.29		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ODC-33	0.0000139*	173	59.5		8.46	0.7535	T			minimum age of intrusion			
2084	2	276.05	8	0.717	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-33	0.0000139*	173	59.5		8.46	0.7535	T	103				12-POINT WHOLE-ROCK ISOCHRON	AGE IS ANOMALOUSLY LOW
2085	1	283.88		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ODC-34	0.0000139*	141	4.84		87.2	1.0563	T			age not evaluated			
2085	2	276.05	8	0.717	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-34	0.0000139*	141	4.84		87.2	1.0563	T	103				12-POINT WHOLE-ROCK ISOCHRON	AGE IS ANOMALOUSLY LOW
2086	1	364.15		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ODC-38	0.0000139*	173	13.5		37.8	0.9004	T			age not evaluated		RB AND SR VALUES ARE AVERAGES OF 2 DETERMINATIONS	
2086	2	276.05	8	0.717	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-38	0.0000139*	173	13.5		37.8	0.9004	T	103				RB AND SR VALUES ARE AVERAGES OF 2 DETERMINATIONS; 12-POINT WHOLE-ROCK ISOCHRON	AGE IS ANOMALOUSLY LOW
2087	1	260.39		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ODC-41	0.0000139*	207	5.01		125	1.1679	T						AGE IS ANOMALOUSLY LOW
2087	2	276.05	8	0.717	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-41	0.0000139*	207	5.01		125	1.1679	T	103				12-POINT WHOLE-ROCK ISOCHRON	AGE IS ANOMALOUSLY LOW
2088	1	299.54		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ODC-42	0.0000139*	221	13.1		49.9	0.9169	T			age not evaluated			
2088	2	276.05	8	0.717	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-42	0.0000139*	221	13.1		49.9	0.9169	T	103				12-POINT WHOLE-ROCK ISOCHRON	AGE IS ANOMALOUSLY LOW
2089	1	229.06		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	R5090B	0.0000139*	269	11.02		72.3	0.9404	T					SR VALUE IS AVERAGE OF 2 DETERMINATIONS	AGE IS ANOMALOUSLY LOW
2090	1	252.56		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	R5090C	0.0000139*	101	12.6		23.4	0.789	T						AGE IS ANOMALOUSLY LOW
2091	1	229.06		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	R5091A	0.0000139*	178	9.82		53.4	0.8785	T					SR VALUE IS AVERAGE OF 2 DETERMINATIONS	AGE IS ANOMALOUSLY LOW
2092	1	266.26		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	R5091B	0.0000139*	192	444		131.1	1.2	T					RB AND SR VALUES ARE AVERAGES OF 2 DETERMINATIONS	AGE IS ANOMALOUSLY LOW
2093	1	345.55		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ODC-472	0.0000139*	146	8.27		52.4	0.962	T			age not evaluated			
2094	1	411.14		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ODC-474	0.0000139*	147	11.1		39.2	0.9285	T			minimum age of intrusion		RB AND SR VALUES ARE AVERAGES OF 2 DETERMINATIONS	
2095	1				whole rock		ODC-475	0.0000139*	155	129		3.49	0.728	T						
2096	1	358.28		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ODC-476	0.0000139*	158	13.2		35.3	0.8845	T			age not evaluated			
2103	1	603	78	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SC-1	0.0000139*	277	406		1.97	0.7159	T	104				11-POINT WHOLE-ROCK ISOCHRON; DUPLICATE RB AND SR ANALYSES	AGE OF FORMATION
2104	1	603	78	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SC-15	0.0000139*	245	258		276	0.7199	T	104				11-POINT WHOLE-ROCK ISOCHRON; DUPLICATE RB AND SR ANALYSES	AGE OF FORMATION
2105	1	603	78	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SC-21	0.0000139*	167	355		137	0.718	T	104				11-POINT WHOLE-ROCK ISOCHRON; DUPLICATE RB AND SR ANALYSES	AGE OF FORMATION
2106	1	603	78	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SC-33	0.0000139*	291	76.4		10.8	0.7954	T	104				11-POINT WHOLE-ROCK ISOCHRON; DUPLICATE RB AND SR ANALYSES	AGE OF FORMATION
2107	1	603	78	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SC-35	0.0000139*	294	53.2		16.3	0.8477	T	104				11-POINT WHOLE-ROCK ISOCHRON; DUPLICATE RB AND SR ANALYSES	AGE OF FORMATION
2108	1				whole rock		SC-36	0.0000139*	98.6	56.2		5.14	0.8145	T					DUPLICATE RB AND SR ANALYSES; NO AGE CALCULATED	
2109	1	603	78	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SC-41A	0.0000139*	301	137		6.4	0.7513	T	104				11-POINT WHOLE-ROCK ISOCHRON	AGE OF FORMATION; ONE OF 3 SAMPLES FORMING TENTATIVE 250 M.Y. ISOCHRON RELATED TO PALEOZOIC REMOBILIZATION
2110	1	603	78	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SC-41C	0.0000139*	46.4	96.2		1.4	0.7351	T	104				11-POINT WHOLE-ROCK ISOCHRON	AGE OF FORMATION; ONE OF 3 SAMPLES FORMING TENTATIVE 250 M.Y. ISOCHRON RELATED TO PALEOZOIC REMOBILIZATION
2111	1	603	78	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SC-410	0.0000139*	175	98.6		5.15	0.7487	T	104				11-POINT WHOLE-ROCK ISOCHRON	AGE OF FORMATION; ONE OF 3 SAMPLES FORMING TENTATIVE 250 M.Y. ISOCHRON RELATED TO PALEOZOIC REMOBILIZATION
2112	1	603	78	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SC-42	0.0000139*	232	49		13.9	0.8268	T	104				11-POINT WHOLE-ROCK ISOCHRON	AGE OF FORMATION
2113	1	603	78	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SC-51	0.0000139*	203	55.9		10.6	0.7976	T	104				11-POINT WHOLE-ROCK ISOCHRON	AGE OF FORMATION
2114	1	603	78	0.7051	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SC-53	0.0000139*	186	110		4.93	0.7459	T	104				11-POINT WHOLE-ROCK ISOCHRON	AGE OF FORMATION
2116	1	578.53	28	0.7054	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5202	0.0000139*				0.534	0.7103		105		age of intrusion		87RB/86SR BY XRF; 4-POINT WHOLE-ROCK ISOCHRON	
2117	1	578.53	28	0.7054	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5196	0.0000139*				1.92	0.7208		105		age of intrusion		87RB/86SR BY XRF; 4-POINT WHOLE-ROCK ISOCHRON	
2118	1	578.53	28	0.7054	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5195	0.0000139*	131	125.5		3.02	0.7297	T	105		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON	
2119	1	578.53	28	0.7054	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5198	0.0000139*	145.5	110.8		3.8	0.7383	T	105		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON	
2120	1	503.15	17	0.7128	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5176	0.0000139*	20.75	36.15		16.8	0.8201	T	106		minimum age of intrusion		6-POINT WHOLE-ROCK ISOCHRON	AGE IS PROBABLY CLOSE TO 570 M.Y.
2121	1	503.15	17	0.7128	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5094	0.0000139*				24.1	0.8852		106		minimum age of intrusion		87RB/86SR BY XRF; 6-POINT WHOLE-ROCK ISOCHRON	AGE IS PROBABLY CLOSE TO 570 M.Y.
2122	1	503.15	17	0.7158	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5093	0.0000139*	232.3	23.68		29	0.9223	T	106		minimum age of intrusion		"6-POINT, WHOLE-ROCK ISOCHRON"	AGE IS PROBABLY CLOSE TO 570 M.Y.
2123	1	503.15	17	0.7128	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5092	0.0000139*				31.9	0.9572		106		minimum age of intrusion		87RB/86SR BY XRF; 6-POINT WHOLE-ROCK ISOCHRON	AGE IS PROBABLY CLOSE TO 570 M.Y.
2124	1	503.15	17	0.7128	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5075 OR R5175	0.0000139*	251.7	21.76		34.3	0.9678	T	106		minimum age of intrusion		6-POINT WHOLE-ROCK ISOCHRON	AGE IS PROBABLY CLOSE TO 570 M.Y.
2125	1	503.15	17	0.7128	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5095	0.0000139*	363.1	13.61		81.6	1.2861	T	106		minimum age of intrusion		6-POINT WHOLE-ROCK ISOCHRON	AGE IS PROBABLY CLOSE TO 570 M.Y.
2126	1	556.99	4	0.7058	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4849	0.0000139*	237	35.7		19.5	0.8606	T	107				6-POINT WHOLE-ROCK ISOCHRON	PRIMARY AGE
2127	1	556.99	4	0.7058	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4850	0.0000139*	211	49.1		12.6	0.8078	T	107				6-POINT WHOLE-ROCK ISOCHRON	PRIMARY AGE
2128	1	556.99	4	0.7058	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4852	0.0000139*	200	14.3		41.8	1.0313	T	107				6-POINT WHOLE-ROCK ISOCHRON	PRIMARY AGE
2129	1	556.99	4	0.7058	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4851	0.0000139*	115	214		1.56	0.7179	T	107				6-POINT WHOLE-ROCK ISOCHRON	PRIMARY AGE
2130	1	556.99	4	0.7058	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-4853	0.0000139*	95	91.8		3	0.7298	T	107				6-POINT WHOLE-ROCK ISOCHRON	PRIMARY AGE
2131	1				whole rock		R4143	0.0000139*	205	51.1		11.7	0.7843	T					NO AGE CALCULATED	
2132	1	556.99	4	0.7058	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4144	0.0000139*	151.2	42.3		10.4	0.789	T	107		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON	
2136	1	254.51	16		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	B-3817A	0.0000139*	666	14.9	0.68			T			age of metamorphic crystallization	UPGRADED CONCENTRATE	RADIOGENIC SR-87/RB-87 = 0.00369	
2137	1	254.51	13		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	B-3815A	0.0000139*	898	16.7	0.84			T			age of metamorphic crystallization		RADIOGENIC SR-87/RB-87 = 0.00370	
2142	1	230.04	7		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	B-3013	0.0000139*	1129	3.4	1.03			T			age of later metamorphism		RADIOGENIC SR-87/RB-87 = 0.00325	
2143	1	166.41	9		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	B-3126B	0.0000139*	2016	14.9	1.36			T			age of intrusion		RADIOGENIC SR-87/RB-87 = 0.00238	
2190	1	352.4	28		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	B-3609A	0.0000139*	472	46.1	0.72			T			age of intrusion	PURE CONCENTRATE	*SR87/RB87 = 0.00538	
2203	1	460			whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	not given									age of intrusion		NO ANALYTICAL DATA GIVEN	
2204	1	605			whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	not given									age of intrusion		NO ANALYTICAL DATA GIVEN	
2205	1	249.62	10		whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	R1034	0.0000139*				0.53	0.7099				age of later metamorphism		INITIAL 87SR/86SR CLOSE TO 0.707; 2-POINT MINERAL-WHOLE-ROCK ISOCHRON	
2205	2	249.62	10		biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	B1034	0.0000139*				49.08	0.883				age of later metamorphism		INITIAL 87SR/86SR CLOSE TO 0.707; 2-POINT MINERAL-WHOLE-ROCK ISOCHRON	
2206	1	249.62	10		whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	R1042	0.0000139*				0.37	0.7108				age of later metamorphism		INITIAL 87SR/86SR CLOSE TO 0.707; 3-POINT MINERAL-WHOLE-ROCK ISOCHRON	
2206	2	249.62	10		plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	F1042	0.0000139*				0.03	0.7075				age of later metamorphism		INITIAL 87SR/86SR CLOSE TO 0.707; 3-POINT MINERAL-WHOLE-ROCK ISOCHRON	
2206	3	249.62	10		biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	B-1042	0.0000139*				18.41	0.7712				age of later metamorphism		INITIAL 87SR/86SR CLOSE TO 0.707; 3-POINT MINERAL-WHOLE-ROCK ISOCHRON	
2207	1	395.45	64	0.712	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NON-1	0.0000147*		63.2		17.007	0.8037		108		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
2208	1	395.45	64	0.712	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NON-2	0.0000147*		71		7.746	0.7571		108		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
2209	1	395.45	64	0.712	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NON-3	0.0000147*		23.8		18.691	0.8212		108		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
2210	1	395.45	64	0.712	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NON-4	0.0000147*		121.9		4.177	0.7322		108		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
2211	1	395.45	64	0.712	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NON-7	0.0000147*		247.8		2.03	0.7259		108		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
2212	1				whole rock		NON-5	1.47E-05		1.99		509.83	2.168	T					NO AGE CALCULATED	ISOCHRON AGE IS 382 M.Y.
2213	1				whole rock		NON-6	1.47E-05		2.17		501.24	2.791	T					NO AGE CALCULATED	ISOCHRON AGE IS 382 M.Y.
2217	1	424.43	10	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SWC D4	0.0000147*	141	193		2.12	0.723	N	109		minimum age of metamorphic crystallization		8-POINT WHOLE-ROCK ISOCHRON	
2217	2	414.08	10	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SWC D4	0.0000147*	141	193		2.12	0.723	N	110		minimum age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON
2218	1	424.43	10	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SWC D5	0.0000147*	142	204		2.03	0.723	N	109		minimum age of metamorphic crystallization		8-POINT WHOLE-ROCK ISOCHRON
2218	2	414.08	10	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SWC D5	0.0000147*	142	204		2.03	0.723	N	110		minimum age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON
2219	1	424.43	10	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SWC D6	0.0000147*	145	194		2.18	0.719	N	109		minimum age of metamorphic crystallization		8-POINT WHOLE-ROCK ISOCHRON
2219	2	414.08	10	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SWC D6	0.0000147*	145	194		2.18	0.719	N	110		minimum age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON
2220	1	476.19		0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B-1	0.0000147*	0	220		0	0.705	N	112		minimum age of metamorphic crystallization		RB AND SR BY XRF; 2-POINT WHOLE-ROCK ISOCHRON
2221	1	476.19		0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B-2	0.0000147*	181	76.3		6.89	0.752	N	112		minimum age of metamorphic crystallization		2-POINT WHOLE-ROCK ISOCHRON
2222	1	476.19		0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B-3	0.0000147*	0	330		0	0.705	N	112		minimum age of metamorphic crystallization		RB AND SR BY XRF; 2-POINT WHOLE-ROCK ISOCHRON
2223	1	476.19		0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B-5	0.0000147*	0	210		0	0.705	N	112		minimum age of metamorphic crystallization		RB AND SR BY XRF; 2-POINT WHOLE-ROCK ISOCHRON
2224	1	476.19		0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B-6	0.0000147*	0	250		0	0.705	N	112		minimum age of metamorphic crystallization		RB AND SR BY XRF; 2-POINT WHOLE-ROCK ISOCHRON
2225	1	424.43	10	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B-7	0.0000147*	115	682		0.49	0.714	N	109		minimum age of metamorphic crystallization		8-POINT WHOLE-ROCK ISOCHRON
2225	2	414.08	10	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B-7	0.0000147*	115	682		0.49	0.714	N	110		minimum age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON
2226	1	424.43	10	0.714	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B-8	0.0000147*	226	14.8		45.2	0.983	N	109		minimum age of metamorphic crystallization		8-POINT WHOLE-ROCK ISOCHRON
2226	2	414.08		0.714	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B-8	0.0000147*	226	14.8		45.2	0.983	N	111		minimum age of metamorphic crystallization		2-POINT WHOLE-ROCK ISOCHRON
2229	1	424.43	10	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B-11	0.0000147*	96.3	208		1.34	0.719	N	109		minimum age of metamorphic crystallization		8-POINT WHOLE-ROCK ISOCHRON
2229	2	414.08	10	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B-11	0.0000147*	96.3	208		1.34	0.719	N	110		minimum age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON
2230	1	424.43	10	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B-12	0.0000147*	184	90.9		5.89	0.745	N	109		minimum age of metamorphic crystallization		8-POINT WHOLE-ROCK ISOCHRON
2230	2	414.08	10	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B-12	0.0000147*	184	90.9		5.89	0.745	N	110		minimum age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON
2231	1	424.43	10	0.714	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B-13	0.0000147*	266	70.5		11	0.779	N	109		minimum age of metamorphic crystallization		8-POINT WHOLE-ROCK ISOCHRON
2231	2	414.08		0.714	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B-13	0.0000147*	266	70.5		11	0.779	N	111		minimum age of metamorphic crystallization		2-POINT WHOLE-ROCK ISOCHRON
2232	1	450.29	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-5052	0.0000139*				0.09	0.705		113		age of metamorphic crystallization		17-POINT WHOLE-ROCK ISOCHRON
2233	1	450.29	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5053A	0.0000139*				2.38	0.721		113		age of metamorphic crystallization		17-POINT WHOLE-ROCK ISOCHRON
2234	1	450.29	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5053B	0.0000139*				2.75	0.7234		113		age of metamorphic crystallization		17-POINT WHOLE-ROCK ISOCHRON
2235	1	450.29	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5053C	0.0000139*				4.7	0.733		113		age of metamorphic crystallization		17-POINT WHOLE-ROCK ISOCHRON
2236	1	450.29	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-5069	0.0000139*				5.66	0.7395		113		age of volcanism		17-POINT WHOLE-ROCK ISOCHRON
2237	1	450.29	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5070	0.0000139*				1.94	0.7197		113		age of volcanism		17-POINT WHOLE-ROCK ISOCHRON
2238	1	450.29	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5071	0.0000139*				0.46	0.7097		113		age of metamorphic crystallization		17-POINT WHOLE-ROCK ISOCHRON
2239	1	450.29	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5072	0.0000139*				0.06	0.7066		113		age of metamorphic crystallization		17-POINT WHOLE-ROCK ISOCHRON
2240	1	450.29	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-1027A	0.0000139*				12.31	0.7885		113		age of metamorphic crystallization		17-POINT WHOLE-ROCK ISOCHRON
2240	2	448.34	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R1027A	0.0000139*				12.31	0.7885		114		age of metamorphic crystallization		9-POINT WHOLE-ROCK ISOCHRON
2241	1	450.29	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-1027B	0.0000139*				4.62	0.7388		113		age of metamorphic crystallization		17-POINT WHOLE-ROCK ISOCHRON
2241	2	448.34	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-1027B	0.0000139*				4.62	0.7388		114		age of metamorphic crystallization		9-POINT WHOLE-ROCK ISOCHRON
2242	1	450.29	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-1027C	0.0000139*				6.46	0.7476		113		age of metamorphic crystallization		17-POINT WHOLE-ROCK ISOCHRON
2242	2	448.34	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-1027C	0.0000139*				6.46	0.7476		114		age of metamorphic crystallization		9-POINT WHOLE-ROCK ISOCHRON
2243	1	450.29	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-1027D	0.0000139*				13.13	0.7866		113		age of metamorphic crystallization		17-POINT WHOLE-ROCK ISOCHRON
2243	2	448.34	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-1027D	0.0000139*				13.13	0.7866		114		age of metamorphic crystallization		9-POINT WHOLE-ROCK ISOCHRON
2244	1	450.29	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-1027E	0.0000139*				10.27	0.7745		113		age of metamorphic crystallization		17-POINT WHOLE-ROCK ISOCHRON
2244	2	448.34	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-1027E	0.0000139*				10.27	0.7745		114		age of metamorphic crystallization		9-POINT WHOLE-ROCK ISOCHRON
2245	1	450.29	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-1029	0.0000139*				2.81	0.7257		113		age of metamorphic crystallization		17-POINT WHOLE-ROCK ISOCHRON
2245	2	448.34	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-1029	0.0000139*				2.81	0.7257		114		age of metamorphic crystallization		9-POINT WHOLE-ROCK ISOCHRON
2246	1	450.29	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-1030	0.0000139*				2.17	0.7196		113		age of metamorphic crystallization		17-POINT WHOLE-ROCK ISOCHRON
2246	2	448.34	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-1030	0.0000139*				2.17	0.7196		114		age of metamorphic crystallization		9-POINT WHOLE-ROCK ISOCHRON
2247	1	450.29	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-1031	0.0000139*				2.61	0.7217		113		age of metamorphic crystallization		17-POINT WHOLE-ROCK ISOCHRON
2247	2	448.34	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-1031	0.0000139*				2.61	0.7217		114		age of metamorphic crystallization		9-POINT WHOLE-ROCK ISOCHRON
2248	1	450.29	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-1032	0.0000139*				2.9	0.7264		113		age of metamorphic crystallization		17-POINT WHOLE-ROCK ISOCHRON
2248	2	448.34	15	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R1032	0.0000139*				2.9	0.7264		114		age of metamorphic crystallization		9-POINT WHOLE-ROCK ISOCHRON
2249	1	430.72		0.7054	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-5052	0.0000139*				0.09	0.705		115		age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON
2250	1	430.72		0.7054	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-5053 A	0.0000139*				2.38	0.721		115		age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON
2251	1	430.72		0.7054	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-5053B	0.0000139*				2.75	0.7234		115		age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON	
2252	1	430.72		0.7054	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-5053C	0.0000139*				4.7	0.733		115		age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON	
2253	1	462.04		0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-5056B	0.0000139*				0.49	0.71		116		age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON	
2254	1	462.04		0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-5056C	0.0000139*				1.07	0.7151		116		age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON	
2255	1	462.04		0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5058D	0.0000139*				1.87	0.7188		116		age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON	
2256	1	462.04		0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-5058C	0.0000139*				0.03	0.707		116		age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON	
2257	1				whole rock		R5058A	0.0000139*				51.79	1.007						NO AGE CALCULATED	POSSIBLY ABOUT 420 M.Y. OLD
2258	1				whole rock		R-5058F	0.0000139*				47.73	0.956						NO AGE CALCULATED	POSSIBLY ABOUT 420 M.Y. OLD
2259	1	278.99		0.7123	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-4791A	0.0000139*				5.83	0.735		117		minimum age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
2260	1	278.99		0.7123	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-4791B	0.0000139*				4.7	0.7314		117		minimum age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
2261	1	278.99		0.7123	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-4791D	0.0000139*				3.94	0.7279		117		minimum age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
2262	1	278.99		0.7123	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-5059A	0.0000139*				36.71	0.854		117		minimum age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
2263	1	278.99		0.7123	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-5059B	0.0000139*				28.19	0.8265		117		minimum age of intrusion		5-POINT WHOLE-ROCK ISOCHRON	
2264	1	347.51		0.7093	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-4792A	0.0000139*				13.26	0.7743		118		age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON	
2265	1	347.51		0.7093	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-4792B	0.0000139*				17.43	0.7975		118		age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON	
2266	1	347.51		0.7093	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-4792C	0.0000139*				6.8	0.744		118		age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON	
2267	1	347.51		0.7093	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-4998	0.0000139*				1.3	0.7169		118		age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON	
2268	1	347.51		0.7093	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-4999	0.0000139*				0.56	0.7095		118		age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON	
2269	1	347.51		0.7093	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-3372	0.0000139*				27.9	0.8458		118		age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON	
2270	1	409.18		0.7071	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5069	0.0000139*				5.66	0.7395		119		age of volcanism		4-POINT WHOLE-ROCK ISOCHRON	
2271	1	409.18		0.7071	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5070	0.0000139*				1.94	0.7197		119		age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON	
2272	1	409.18		0.7071	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5071	0.0000139*				0.46	0.7097		119		age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON	
2273	1	409.18		0.7071	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R5072	0.0000139*				0.06	0.7066		119		age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON	
2274	1				plagioclase		A-4774	1.39E-05				1.45	0.7391	T					NO AGE CALCULATED	AGE APPROXIMATELY 250 M.Y.
2275	1				albite		A-4992	0.0000139*				6.18	0.8835						NO AGE CALCULATED	AGE APPROXIMATELY 250 M.Y.
2276	1	381.77		0.718	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-4788	0.0000139*				1.22	0.7263		120		initial age disturbed by later metamorphism		5-POINT WHOLE-ROCK ISOCHRON	
2277	1	381.77		0.718	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-4717	0.0000139*				1.65	0.7271		120		initial age disturbed by later metamorphism		5-POINT WHOLE-ROCK ISOCHRON	
2278	1	381.77		0.718	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-4719	0.0000139*				2.87	0.735		120		initial age disturbed by later metamorphism		5-POINT WHOLE-ROCK ISOCHRON	
2279	1	381.77		0.718	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-4720B	0.0000139*				4.71	0.7419		120		initial age disturbed by later metamorphism		5-POINT WHOLE-ROCK ISOCHRON	
2280	1	381.77		0.718	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R-4721	0.0000139*				1.48	0.7244		120		initial age disturbed by later metamorphism		5-POINT WHOLE-ROCK ISOCHRON	
2281	1	430.72	20	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	LCV-1	0.0000139*	156			2.51	0.722		121		age of intrusion		SR-87=20.25 E-08 MOL/GM; 8-POINT WHOLE-ROCK ISOCHRON	
2281	2	450.29		0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	LCV-1	0.0000139*	156			2.51	0.722		122		age of intrusion		SR-87=20.25 E-08 MOL/GM; 3-POINT WHOLE-ROCK ISOCHRON	
2282	1	430.72	20	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	LCQ-1 (W-I)	0.0000139*	170			3.15	0.722		121		age of intrusion		SR-86=17.61 E-08 MOL/GM; 8-POINT WHOLE-ROCK ISOCHRON
2283	1	430.72	20	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	LCQ-1 (W-II)	0.0000139*	181			3.3	0.722		121		age of intrusion		SR-86=17.87 E-08 MOL/GM; 8-POINT WHOLE-ROCK ISOCHRON
2284	1	430.72	20	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	LCR-1	0.0000139*	146			5.64	0.74		121		age of intrusion		SR-86=8.42 E-08 MOL/GM; 8-POINT WHOLE-ROCK ISOCHRON
2284	2	430.72		0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	LCR-1	0.0000139*	146			5.64	0.74		123		age of intrusion		SR-86=8.42 E-08 MOL/GM; 3-POINT WHOLE-ROCK ISOCHRON
2285	1	406.24		0.706	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	LCW-1 (W-I)	0.0000139*	248			46.99	0.979				initial age disturbed by later metamorphism		SR-86=1.72 E-08 MOL/GM
2286	1	406.24		0.706	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	LCW-1 (W-II)	0.0000139*	249			48.53	0.985				initial age disturbed by later metamorphism		SR-86=1.67 E-08 MOL/GM
2287	1	406.24		0.706	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	LCW-1 (W-III)	0.0000139*	247			481.23	0.985				initial age disturbed by later metamorphism		SR-86=1.66 E-08 MOL/GM
2288	1	430.72	20	0.706	whole rock		LCR-3 (W-I)	0.0000139*	218			16.86	0.81		121		age of intrusion		SR-86=4.22 E-08 MOL/GM; 8-POINT WHOLE-ROCK ISOCHRON
2288	2	430.72		0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	LCR-3 (W-I)	0.0000139*	218			16.86	0.81		123		age of intrusion		SR-86=4.22 E-08 MOL/GM; 3-POINT WHOLE-ROCK ISOCHRON
2289	1	430.72	20	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	LCR-3 (W-II)	0.0000139*	222			17.11	0.81		121		age of intrusion		SR-86=4.23 E-08 MOL/GM; 8-POINT WHOLE-ROCK ISOCHRON
2289	2	430.72		0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	LCR-3 (W-II)	0.0000139*	222			17.11	0.81		123		age of intrusion		SR-86=4.23 E-08 MOL/GM; 3-POINT WHOLE-ROCK ISOCHRON
2290	1	430.72	20	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	LCR-5 (W-I)	0.0000139*	186			4.03	0.732		121		age of intrusion		SR-86=15.04 E-08 MOL/GM; 8-POINT WHOLE-ROCK ISOCHRON
2290	2	450.29		0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	LCR-5 (W-I)	0.0000139*	186			4.03	0.732		122		age of intrusion		SR-86=15.04 E-08 MOL/GM; 3-POINT WHOLE-ROCK ISOCHRON
2290	3				apatite		LCR-5 (AP)	0.0000139*	1.17			0.02	0.721						SR-86=19.28 E-08 MOL/GM; NO AGE CALCULATED BUT DATA PLOT CLOSE TO WHOLE-ROCK-BIOTITE ISOCHRON OF 250 M.Y.
2290	4				plagioclase		LCR-5 (P)	0.0000139*	103			3.38	0.729						"SR-86=9.92 E-08 MOL/GM; NO AGE CALCULATED, BUT DATA PLOT CLOSE TO 250 M.Y. WHOLE-ROCK-BIOTITE ISOCHRON"
2290	5				K feldspar		LCR-5 (K-I)	0.0000139*	386			6.6	0.738						"SR-86=19.08 E-08 MOL/GM; NO AGE CALCULATED, BUT DATA PLOT CLOSE TO 250 M.Y. WHOLE-ROCK-BIOTITE ISOCHRON"
2291	1	430.72	20	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	LCR-5 (W-II)	0.0000139*	183			4.12	0.733		121		age of intrusion		SR-86=14.50 E-08 MOL/GM; 8-POINT WHOLE-ROCK ISOCHRON	
2291	2	450.29		0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	LCR-5 (W-II)	0.0000139*	183			4.12	0.733		122		age of intrusion		SR-86=14.50 E-08 MOL/GM; 3-POINT WHOLE-ROCK ISOCHRON	
2291	3				K feldspar		LCR-5 (K-II)	0.0000139*	383			6.46	0.738						SR-86=19.34 E-08 MOL/GM; NO AGE CALCULATED BUT DATA PLOT CLOSE TO WHOLE-ROCK-BIOTITE ISOCHRON OF 250 M.Y.	
2291	4				muscovite		LCR-5 (M)	0.0000139*	602			85.3	1.091						SR-86=2.30 E-08 MOL/GM; NO AGE CALCULATED	
2292	1	244.73	5		whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	LCR-5 (W-I)	0.0000139*	186			4.03	0.732				age of later metamorphism		SR-86=15.04 E-08 MOL/GM; 2-POINT WHOLE-ROCK-BIOTITE ISOCHRON	
2292	2	244.73	5		biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	LCR-5 (B)	0.0000139*	738			154.2	1.25				age of later metamorphism		SR-86=1.56 E-08 MOL/GM; 2-POINT WHOLE-ROCK-BIOTITE ISOCHRON	
2293	1				whole rock		LBR-1	1.39E-05	148			1.35	0.716	T					SR-86=35.68 E-08 MOL/GM; NO AGE CALCULATED	
2294	1				whole rock		MWL-1	1.39E-05	47.85			1.76	0.713	T					SR-86=8.83 E-08 MOL/GM; NO AGE CALCULATED	
2295	1				whole rock		MMS-2 (W-I)	1.39E-05	149			1.14	0.716	T					SR-86=42.44 E-08 MOL/GM; NO AGE CALCULATED	
2296	1				whole rock		MMS-2(W-II)	1.39E-05	148			1.18	0.716	T					86SR=40.95 E-08 MOL/GM; NO AGE CALCULATED	
2297	1	430.72	45	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MMQ-11	0.0000139*	152			1.3	0.712	T	124		age of intrusion		SR-86=38.11 E-08 MOL/GM; 3-POINT WHOLE-ROCK ISOCHRON	
2298	1	430.72	45	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MMQ-3	0.0000139*	150			3.09	0.722		124		age of intrusion		SR-86=15.76 E-08 MOL/GM; 3-POINT WHOLE-ROCK ISOCHRON	
2299	1	362.19	15	0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	MCP-1	0.0000139*	80.17			6.74	0.74						SR-86=3.87 E-08 MOL/GM	AGE MAY HAVE BEEN LOWERED BY NEARBY FAULTING OR AGE MAY INDICATE TIME OF INTRUSION
2300	1	430.72	45	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MJH-1 (W)	0.0000139*	63			3.3	0.725		124		age of intrusion		SR-86=6.23 E-08 MOL/GM; 3-POINT WHOLE-ROCK ISOCHRON	
2300	2				muscovite		MJH-1 (M)	0.0000139*	314			49.45	0.904						SR-86=2.07 E-08 MOL/GM; NO AGE CALCULATED BUT DATA PLOTS CLOSE TO WHOLE-ROCK-BIOTITE ISOCHRON OF 250 M.Y.	
2300	3	244.73	5		biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	MJH-1 (B)	0.0000139*	570			134.6	1.188				age of later metamorphism		SR-86=1.38 E-08 MOL/GM; 2-POINT WHOLE-ROCK-BIOTITE ISOCHRON	
2300	4	244.73	5		whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	MJH-1 (W)	0.0000139*	63			3.3	0.725				age of later metamorphism		SR-86=6.23 E-08 MOL/GM; 2-POINT WHOLE-ROCK-BIOTITE ISOCHRON
2302	1				whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	HHF-1	0.0000139*	140			0.95	0.71						"SR-86=47.79 E-08 MOL/GM. ASSUMING AN INITIAL RATIO OF 0.702, AN AGE OF APPROXIMATELY 540 M.Y. IS OBTAINED; THIS SEEMS ANOMALOUS"
2303	1	440.51	40	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	FSM-1	0.0000139*	157			3.46	0.728		126		age of intrusion		SR-86=14.76 E-08 MOL/GM; 2-POINT WHOLE-ROCK ISOCHRON
2304	1	440.51	40	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	FSM-4	0.0000139*	150			3.99	0.732		126		age of intrusion		SR-86=12.26 E-08 MOL/GM; 2-POINT WHOLE-ROCK ISOCHRON
2305	1	430.72	30	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	AWR-1	0.0000139*	10.8			0.16	0.709		127		age of metamorphic crystallization		SR-86=22.10 E-08 MOL/GM; 5-POINT WHOLE-ROCK ISOCHRON
2306	1	430.72	30	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	AWR-2	0.0000139*	21.15			0.76	0.711		127		age of metamorphic crystallization		SR-86=9.03 E-08 MOL/GM; 5-POINT WHOLE-ROCK ISOCHRON
2307	1				whole rock		AWR-6	1.39E-05	24.6			1.25	0.709	T					SR-86=6.39 E-08 MOL/GM; NO AGE CALCULATED
2308	1	430.72	30	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ASH-1	0.0000139*	62.4			3.4	0.726		127		age of volcanism		SR-86=5.99 E-08 MOL/GM; 5-POINT WHOLE-ROCK ISOCHRON
2309	1	430.72	30	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ASH-2	0.0000139*	69.4			4.24	0.733		127		age of volcanism		SR-86=5.33 E-08 MOL/GM; 5-POINT WHOLE-ROCK ISOCHRON
2310	1	430.72	30	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ASH-3	0.0000139*	54			2.83	0.725		127		age of volcanism		SR-86=6.22 E-08 MOL/GM; 5-POINT WHOLE-ROCK ISOCHRON
2311	1	1605.4	40	0.7048	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	U-4	0.0000139*	65.8			2.4	0.758		128		minimum age of volcanism		5-POINT WHOLE-ROCK ISOCHRON; SR-86=0.0891 E-06 MOL/GM
2312	1	1605.4	40	0.7048	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BA-1	0.0000139*	129			2.61	0.7596		128		minimum age of volcanism		5-POINT WHOLE-ROCK ISOCHRON; SR-86=0.161 E-06 MOL/GM
2313	1	1605.4	40	0.7048	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	U-1	0.0000139*	69.9			2.42	0.7606		128		minimum age of volcanism		5-POINT WHOLE-ROCK ISOCHRON; REPLICATE RB AND SR ANALYSES; SR-86=0.09415 E-06 MOL/GM
2314	1	1605.4	40	0.7048	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	U-6	0.0000139*	77.5			3.32	0.7831		128		minimum age of volcanism	INTENSELY SHEARED	5-POINT WHOLE-ROCK ISOCHRON; SR-86=0.0760 E-06 MOL/GM
2315	1	1605.4	40	0.7048	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	U-2	0.0000139*	113			11.4	0.9613		128		minimum age of volcanism		5-POINT WHOLE-ROCK ISOCHRON; REPLICATE RB AND SR ANALYSES; SR-86=0.03215 E-06 MOL/GM
2316	1	1497.72	120	0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	68-6A	0.0000139*	118			1.69	0.7413				age meaning uncertain (geologic factors)		REPLICATE RB AND SR ANALYSES; SR-86=0.2285 E-06 MOL/GM
2317	1	1556.45	140	0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	68-6B	0.0000139*	94.6			1.48	0.7378				age meaning uncertain (geologic factors)		REPLICATE RB AND SR ANALYSES; SR-86=0.2085 E-06 MOL/GM
2318	1	1527.08	130	0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	68-6C	0.0000139*	82.1			1.62	0.7404				age meaning uncertain (geologic factors)		REPLICATE RB AND SR ANALYSES; SR-86=0.165 E-06 MOL/GM
2321	1	1595.61	130	0.7026	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1265	0.0000139*	8.63	404		0.0618	0.704	N	129		minimum age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON
2322	1	1595.61	130	0.7026	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1266	0.0000139*	6.24	344		0.0525	0.7041	N	129		minimum age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON
2323	1	1595.61	130	0.7026	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1267	0.0000139*	16.65	392		0.1229	0.7056	N	129		minimum age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON
2324	1	1595.61	130	0.7026	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D-1270	0.0000139*	2.39	326		0.0213	0.7031	N	129		minimum age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON; REPLICATE 87SR/86SR ANALYSES
2325	1	1595.61	130	0.7026	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1271	0.0000139*	18.41	305		0.1746	0.7063	N	129		minimum age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON; REPLICATE 87SR/86SR ANALYSES
2326	1	1595.61	130	0.7026	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1273	0.0000139*	11.46	108		0.3068	0.7097	N	129		minimum age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON; REPLICATE 87SR/86SR ANALYSES
2327	1				whole rock		D1269	1.39E-05	0.7	259				N					RB AND SR BY XRF; NO AGE CALCULATED
2328	1	1634.76	30	0.7022	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1286	0.0000139*	84.5	313		0.782	0.7207	N	130		age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON
2329	1	1634.76	30	0.7022	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1287	0.0000139*	117	319		1.063	0.7271	N	130		age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON
2330	1	1634.76	30	0.7022	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1288	0.0000139*	126	313		1.163	0.7296	N	130		age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON
2331	1	1634.76	30	0.7022	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1289	0.0000139*	92.5	302		0.887	0.7228	N	130		age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON
2332	1	1634.76	40	0.701	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1272	0.0000139*	172	137		3.629	0.7871	N	131		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON
2333	1	1634.76	40	0.701	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1277	0.0000139*	167	102		4.747	0.8105	N	131		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON
2334	1	1634.76	40	0.701	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1279	0.0000139*	142	148		2.779	0.766	N	131		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON
2335	1	1634.76	40	0.701	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1280	0.0000139*	108	317		0.986	0.7239	N	131		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON	
2336	1	1448.77	40	0.7037	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1290	0.0000139*	114	287		1.151	0.728	N	132		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON WITH SAMPLES FROM BLACK CANYON	
2337	1	1448.77	40	0.7037	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D1292	0.0000139*	112	652		0.499	0.7142	N	132		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON WITH SAMPLES FROM BLACK CANYON	
2338	1				whole rock		D1291	1.39E-05	116	542				N					NO AGE CALCULATED; RB AND SR BY XRF	
2407	1	87.99	50		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1	0.0000147*	484	110	0.17			N			initial age disturbed by weathering	3% CLAY	*87SR/87RB = 0.00125	
2408	1	168.74	10		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	2	0.0000147*	381	11.6	0.26			N			age of volcanism	5% IMPURITIES	*87SR/87RB = 0.00240	
2409	1	168.74	15		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	3	0.0000147*	342	29.6	0.23			N			minimum age of volcanism	15% CLAY	DUPLICATE RAW DATA; *87SR/87RB = 0.00240	
2410	1	153.21	15		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	4	0.0000147*	329	20.2	0.2			N			initial age disturbed by weathering		*87SR/87RB = 0.00218	
2411	1	168.74	10		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	5	0.0000147*	376	21.15	0.25			N			minimum age of volcanism	5% IMPURITIES	DUPLICATE RAW DATA; *87SR/87RB = 0.00239	
2412	1	152.17	15		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	6	0.0000147*	235	36.6	0.14			N			initial age disturbed by weathering	20% IMPURITIES	DUPLICATE RAW DATA; *87SR/87RB = 0.00216	
2413	1	371		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ODC-203	0.0000139*	103	4.41		70.08	1.0763	T			initial age disturbed by weathering			415 M.Y. AGE GIVEN BY FRESH SAMPLES
2414	1	369.05		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ODC-204	0.0000139*	114	4.42		77.65	1.1139	T			initial age disturbed by weathering			415 M.Y. AGE GIVEN BY FRESH SAMPLES
2415	1	350.45		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ODC-205	0.0000139*	126	4.14		92.07	1.1658	T			initial age disturbed by weathering			415 M.Y. AGE GIVEN BY FRESH SAMPLES
2416	1	364.15		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	ODC-206	0.0000139*	98.3	7.09		40.96	0.919	T			initial age disturbed by weathering			415 M.Y. AGE GIVEN BY FRESH SAMPLES
2417	1				whole rock		ODC-44	0.0000139*	244	76.6		9.31	0.7818	T			initial age disturbed by later metamorphism		NO ISOCHRON FORMED BY PLOTTING THIS DATA WITH DATA OF 13 OTHER SAMPLES	"14 FRESH GRANITE SAMPLES GIVE AVERAGE AGE OF 580+/-30 M.Y., ASSUMING INITIAL 87SR/86SR=0.715"
2418	1				whole rock		ODC-45	0.0000139*	228	95.6		6.93	0.7699	T			initial age disturbed by later metamorphism		NO ISOCHRON FORMED BY PLOTTING THIS DATA WITH DATA OF 13 OTHER SAMPLES	"14 FRESH GRANITE SAMPLES GIVE AVERAGE AGE OF 580+/-30 M.Y., ASSUMING INITIAL 87SR/86SR=0.715"
2419	1				whole rock		ODC-47	0.0000139*	218	93.3		6.82	0.779	T			initial age disturbed by later metamorphism		NO ISOCHRON FORMED BY PLOTTING THIS DATA WITH DATA OF 13 OTHER SAMPLES	14 FRESH GRANITE SAMPLES GIVE AVERAGE AGE OF 580+/-30 M.Y. ASSUMING INITIAL 87SR/86SR=0.715
2420	1				whole rock		ODC-48	0.0000139*	207	110		5.47	0.7611	T			initial age disturbed by later metamorphism		NO ISOCHRON FORMED BY PLOTTING THIS DATA WITH DATA OF 13 OTHER SAMPLES	14 FRESH GRANITE SAMPLES GIVE AVERAGE AGE OF 580+/-30 M.Y. ASSUMING INITIAL 87SR/86SR=0.715
2421	1				whole rock		ODC-55	0.0000139*	204	115		5.15	0.7618	T			initial age disturbed by later metamorphism		RB AND SR BY XRF. NO ISOCHRON FORMED BY PLOTTING THIS DATA WITH DATA OF 13 OTHER SAMPLES	14 FRESH GRANITE SAMPLES GIVE AVERAGE AGE OF 580+/-30 M.Y. ASSUMING INITIAL 87SR/86SR=0.715
2422	1				whole rock		ODC-63	0.0000139*	234	85.6		7.96	0.7795	T			initial age disturbed by later metamorphism		RB AND SR BY XRF. NO ISOCHRON FORMED BY PLOTTING THIS DATA WITH DATA OF 13 OTHER SAMPLES	14 FRESH GRANITE SAMPLES GIVE AVERAGE AGE OF 580+/-30 M.Y. ASSUMING INITIAL 87SR/86SR=0.715
2423	1				whole rock		ODC-65	0.0000139*	192	205		2.73	0.7354	T			initial age disturbed by later metamorphism		DUPLICATE ANALYSES FOR 87SR/86SR. NO ISOCHRON FORMED BY PLOTTING THIS DATA WITH DATA OF 13 OTHER SAMPLES	"14 FRESH GRANITE SAMPLES GIVE AVERAGE AGE OF 580+/-30 M.Y., ASSUMING INITIAL 87SR/86SR=0.715"
2424	1				whole rock		ODC-70	0.0000139*	252	89.6		8.19	0.7746	T			initial age disturbed by later metamorphism		RB AND SR BY XRF. NO ISOCHRON FORMED BY PLOTTING THIS DATA WITH DATA OF 13 OTHER SAMPLES	"14 FRESH GRANITE SAMPLES GIVE AVERAGE AGE OF 580+/-30 M.Y., ASSUMING INITIAL 87SR/86SR=0.715; A SUBGROUP OF 7 FRESH GRANITE SAMPLES GIVES AVERAGE AGE OF 460+/-15 M.Y. WITH INITIAL 87SR/86SR=0.7245"
2425	1				whole rock		ODC-71	0.0000139*	246	80.1		8.95	0.7799	T			initial age disturbed by later metamorphism		RB AND SR BY XRF. NO ISOCHRON FORMED BY PLOTTING THIS DATA WITH DATA OF 13 OTHER SAMPLES	14 FRESH GRANITE SAMPLES GIVE AVERAGE AGE OF 580+/-30 M.Y. ASSUMING INITIAL 87SR/86SR=0.715; A SUBGROUP OF 7 FRESH GRANITE SAMPLES GIVES AVERAGE AGE OF 460+/-15 M.Y. WITH INITIAL 87SR/86SR=0.7245
2426	1				whole rock		ODC-72A	0.0000139*	175	131		3.9	0.7504	T			initial age disturbed by later metamorphism		RB AND SR BY XRF; DUPLICATE ANALYSES FOR 87SR/86SR. NO ISOCHRON FORMED BY PLOTTING THIS DATA WITH DATA OF 13 OTHER SAMPLES	14 FRESH GRANITE SAMPLES GIVE AVERAGE AGE OF 580+/-30 M.Y. ASSUMING INITIAL 87SR/86SR=0.715; A SUBGROUP OF 7 FRESH GRANITE SAMPLES GIVES AVERAGE AGE OF 460+/-15 M.Y. WITH INITIAL 87SR/86SR=0.7245
2426	2				whole rock		ODC-72B	0.0000139*	166	105		4.6	0.7538	T			initial age disturbed by later metamorphism		RB AND SR BY XRF. NO ISOCHRON FORMED BY PLOTTING THESE DATA WITH DATA OF 13 OTHER SAMPLES	14 FRESH GRANITE SAMPLES GIVE AVERAGE AGE OF 580+/-30 M.Y. ASSUMING INITIAL 87SR/86SR=0.715; 7-SAMPLE SUBGROUP GIVES AVERAGE AGE OF 460+/-15 M.Y. WITH INITIAL 87SR/86SR=0.7245
2427	1				whole rock		ODC-73	0.0000139*	235	117		5.85	0.7636	T			initial age disturbed by later metamorphism			14 FRESH GRANITE SAMPLES GIVE AVERAGE AGE OF 580+/-30 M.Y. ASSUMING INITIAL 87SR/86SR=0.715; A SUBGROUP OF 7 FRESH GRANITES GIVES AVERAGE AGE OF 460+/-15 M.Y. WITH INITIAL 87SR/86SR=0.7245
2428	1				whole rock		ODC-74	0.0000139*	208	103		5.88	0.7632	T			initial age disturbed by later metamorphism		RB AND SR BY XRF. NO ISOCHRON FORMED BY PLOTTING THIS DATA WITH DATA OF 13 OTHER SAMPLES	"14 FRESH GRANITE SAMPLES GIVE AVERAGE AGE OF 580+/-30 M.Y., ASSUMING INITIAL 87SR/86SR=0.715; A SUBGROUP OF 7 FRESH GRANITE SAMPLES GIVES AVERAGE AGE OF 460+/-15 M.Y. WITH INITIAL 87SR/86SR=0.7245"
2429	1				whole rock		ODC-75	0.0000139*	261	83.5		9.13	0.7878	T			initial age disturbed by later metamorphism		RB AND SR BY XRF. NO ISOCHRON FORMED BY PLOTTING THIS DATA WITH DATA OF 13 OTHER SAMPLES	"14 FRESH GRANITE SAMPLES GIVE AVERAGE AGE OF 580+/-30 M.Y., ASSUMING INITIAL 87SR/86SR=0.715; A SUBGROUP OF 7 FRESH GRANITE SAMPLES GIVES AVERAGE AGE OF 460+/-15 M.Y. WITH INITIAL 87SR/86SR=0.7245"
2430	1				whole rock		ODC-106	0.0000139*	280	73.6		11.09	0.7911	T			"age meaning uncertain (geologic factors), initial age disturbed by weathering"		RB AND SR BY XRF	7 WEATHERED GRANITE SAMPLES GIVE AVERAGE AGE OF 495+/-30 M.Y. ASSUMING INITIAL 87SR/86SR=0.715 OR 425+/-25 M.Y. WITH INITIAL 87SR/86SR=0.7245
2431	1				whole rock		ODC-108	0.0000139*	292	48.4		17.68	0.8387	T			"age meaning uncertain (geologic factors), initial age disturbed by weathering"		RB AND SR BY XRF	7 WEATHERED GRANITE SAMPLES GIVE AVERAGE AGE OF 495+/-30 M.Y. ASSUMING INITIAL 87SR/86SR=0.715 OR 425+/-25 M.Y. WITH INITIAL 87SR/86SR=0.7245
2432	1				whole rock		ODC-110	0.0000139*	273	69.9		11.42	0.7923	T			"age meaning uncertain (geologic factors), initial age disturbed by weathering"			"7 WEATHERED GRANITE SAMPLES GIVE AVERAGE AGE OF 495+/-30 M.Y., ASSUMING INITIAL 87SR/86SR=0.715 OR 425+/-25 M.Y. WITH INITIAL 87SR/86SR=0.7245"
2433	1				whole rock		ODC-111	0.0000139*	202	91.4		6.44	0.7644	T			"age meaning uncertain (geologic factors), initial age disturbed by weathering"		RB AND SR BY XRF	"7 WEATHERED GRANITE SAMPLES GIVE AVERAGE AGE OF 495+/-30 M.Y., ASSUMING INITIAL 87SR/86SR=0.715 OR 425+/-25 M.Y. WITH INITIAL 87SR/86SR=0.7245"
2434	1				whole rock		ODC-113	0.0000139*	228	110.5		5.99	0.7587	T			"age meaning uncertain (geologic factors), initial age disturbed by weathering"			"7 WEATHERED GRANITES GIVE AVERAGE AGE OF 495+/-30 M.Y., ASSUMING INITIAL 87SR/86SR=0.715 OR 425+/-25 M.Y. WITH INITIAL 87SR/86SR=0.7245"
2435	1				whole rock		ODC-115	0.0000139*	283	77.6		10.65	0.7877	T			"age meaning uncertain (geologic factors), initial age disturbed by weathering"			"7 WEATHERED GRANITE SAMPLES GIVE AVERAGE AGE OF 495+/-30 M.Y., ASSUMING INITIAL 87SR/86SR=0.715 OR 425+/-25 M.Y. WITH INITIAL 87SR/86SR=0.7245"
2436	1				whole rock		ODC-116	0.0000139*	285	66.1		12.58	0.7887	T			"age meaning uncertain (geologic factors), initial age disturbed by weathering"			"7 WEATHERED GRANITE SAMPLES GIVE AVERAGE AGE OF 495+/-30 M.Y., ASSUMING INITIAL 87SR/86SR=0.715 OR 425+/-25 M.Y. WITH INITIAL 87SR/86SR=0.7245"
2437	1	931.91	5	0.7164	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	3100	0.0000139*	185	126		4.27	0.7733	T	133		age of volcanism	SHALE CUTTING FROM DEPTH OF 3100 FEET	3-POINT WHOLE-ROCK ISOCHRON	
2438	1	931.91	5	0.7164	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	3500	0.0000139*	188	93.3		5.89	0.7948	T	133		age of volcanism	SHALE CUTTING FROM DEPTH OF 3500 FEET	3-POINT WHOLE-ROCK ISOCHRON	
2439	1	931.91	5	0.7164	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	4300	0.0000139*	198	114		5.07	0.7839	T	133		age of volcanism	SHALE CUTTINGS FROM DEPTH OF 4300 FEET	3-POINT WHOLE-ROCK ISOCHRON	
2452	1	2588	125	0.713	sericite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-328S	0.0000147*	274	34.3	2.92			N		Hanson and others (1971)	age of intrusion		%RAD 87SR CALCULATED BY COMPILER	
2452	2	2577.65	125	0.713	K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-328F	0.0000147*	470	45.1	4.98			N		Hanson and others (1971)	age of intrusion		%RAD 87SR CALCULATED BY COMPILER	
2455	1	2556.94	125	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-239	0.0000147*	593	9.2	6.25	18.26	0.68	N		Peterman and others (1972)	minimum age of intrusion		%RAD 87SR CALCULATED BY COMPILER	
2462	1	2360.26	115	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-307	0.0000147*	470	33.4	4.55			N		Peterman and others (1972)	initial age disturbed by later metamorphism		%RAD 87SR CALCULATED BY COMPILER	
2463	1	2588		0.713	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-17	0.0000147*	4730	2	50.4			N		Gast and others (1958);  Peterman and others (1972)	age of intrusion		"%RAD 87SR CALCULATED BY COMPILER, DATA FROM GAST, KULP, AND LONG (1958)"	
2464	1	2556.94	125	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-88	0.0000147*	1200	56.3	12.6			N		Peterman and others (1972)	age of intrusion		%RAD 87SR CALCULATED BY COMPILER	
2466	1	2412.02	115	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-237	0.0000147*	364	7.9	3.61			N		Peterman and others (1972)	minimum age of metamorphic crystallization		%RAD 87SR CALCULATED BY COMPILER	
2467	1	2598.35	125	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-48	0.0000147*	727	10.4	7.79			N		Peterman and others (1972)	age of intrusion		%RAD 87SR CALCULATED BY COMPILER	
2478	1	1128.37	55	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-65	0.0000147*	470	18.9	2.17			N			age of intrusion		%RAD 87SR CALCULATED BY COMPILER	
2479	1	1159.42	55	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-296	0.0000147*	1890	12.2	8.89			N			age of intrusion		%RAD 87SR CALCULATED BY COMPILER; 8.21% K2O	
2493	1	1739.14	85	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-41	0.0000147*	413		2.93						age of metamorphic crystallization		DUPLICATE RB AND SR ANALYSES.  NORMAL SR=48.2 AND 5.2 PPM	
2495	1	1708.08	80	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-164	0.0000147*	515	10.5	3.61			N			age of metamorphic crystallization		%RAD 87SR CALCULATED BY COMPILER	
2502	1	1780.54	85	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-1	0.0000147*	427	17	3.11			N			age of intrusion		%RAD 87SR CALCULATED BY COMPILER	
2504	1	1749.49	85	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-64	0.0000147*	484	17.3	3.45			N			age of intrusion		%RAD 87SR CALCULATED BY COMPILER	
2509	1	1708.08	80	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-58	0.0000147*	886	8.5	6.17			N			age of intrusion		%RAD 87SR CALCULATED BY COMPILER	
2510	1	2515.54	120	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-14	0.0000147*	748	32.2	7.74			N		Goldich and others (1970)	age of later metamorphism	UPGRADED BIOTITE FROM KA-14-1	%RAD 87SR CALCULATED BY COMPILER	
2512	1	2505.18	120	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-107	0.0000147*	547	10.6	5.64			N		Goldich and others (1970)	age of later metamorphism		%RAD 87SR CALCULATED BY COMPILER	
2520	1	2484.48	120	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-9	0.0000147*	772		7.87			N		Goldich and others (1970)	minimum age of intrusion		DUPLICATE RB AND *SR ANALYSES; NORMAL SR=36.4 AND 3.9 PPM	
2521	1	2536.24	125	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-13	0.0000147*	694		7.21					Goldich and others (1970)	minimum age of intrusion		DUPLICATE RB AND *SR ANALYSES; NORMAL SR=13.4 AND 17.3 PPM	
2524	1	1790.9	85	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-27-2	0.0000147*	957	25.4	7.03			N		Goldich and others (1970)		UPGRADED BIOTITE OF KA-27-1	%RAD 87SR CALCULATED BY COMPILER	
2524	2	1811.6	90	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-27-2	0.0000147*	953	30.3	7.07			N		Goldich and others (1970)	age of later metamorphism	UPGRADED BIOTITE OF KA-27-1	%RAD 87SR CALCULATED BY COMPILER	
2525	1	1749.49	85	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-54-2	0.0000147*	477	13.1	3.42			N		Goldich and others (1970)	initial age disturbed by later metamorphism	UPGRADED BIOTITE OF KA-54-1	%RAD 87SR CALCULATED BY COMPILER; DATA FROM P.W. GAST	
2530	1	1708.08	80	0.713	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	KA-29	0.0000147*	431	30.3	3.01			N		Goldich and others (1970)	age of intrusion		%RAD 87SR CALCULATED BY COMPILER	
2537	1	1811.6		0.719	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-33	0.0000147*	151	53.9		8.28	0.933	T	137	Goldich and others (1961)	age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2538	1	1511.39		0.719	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-132	0.0000147*	139	21.1		19.92	1.156	T	136	Goldich and others (1961)			6-POINT WHOLE-ROCK ISOCHRON	MAY DATE TIME OF HYDROTHERMAL ACTIVITY
2539	1	1511.39		0.719	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-134	0.0000147*	97.1	34		8.43	0.903	T	138	Goldich and others (1961)			6-POINT WHOLE-ROCK ISOCHRON	MAY DATE TIME OF HYDROTHERMAL ACTIVITY
2540	1	1811.6		0.719	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-215	0.0000147*	124	73.7		4.96	0.844	T	137	Goldich and others (1961)	age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2541	1	1511.39		0.719	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-133	0.0000147*	77.1	126		1.78	0.756	T	138				6-POINT WHOLE-ROCK ISOCHRON	MAY DATE TIME OF HYDROTHERMAL ACTIVITY
2542	1	1811.6		0.719	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	S-101	0.0000147*	66.4	101		1.91	0.765	T	137		age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2543	1	1511.39		0.719	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	S-102	0.0000147*	109	63		5.07	0.827	T	138				6-POINT WHOLE-ROCK ISOCHRON	MAY DATE TIME OF HYDROTHERMAL ACTIVITY
2544	1	1811.6		0.719	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	S-103	0.0000147*	126	101		3.63	0.812	T	137		age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2545	1	1511.39		0.719	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	402 (140-150)	0.0000147*	109	17.1		19.16	1.136	T	138				6-POINT WHOLE-ROCK ISOCHRON	MAY DATE TIME OF HYDROTHERMAL ACTIVITY
2546	1	1511.39		0.719	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	402 (150-160)	0.0000147*	129	21.4		18.12	1.101	T	138				6-POINT WHOLE-ROCK ISOCHRON	MAY DATE TIME OF HYDROTHERMAL ACTIVITY
2547	1	1811.6		0.719	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	408 (90-100)	0.0000147*	163	47		10.3	0.992	T	137		age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2548	1	1811.6		0.719	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	408 (150-160)	0.0000147*	144	53.1		7.97	0.927	T	137		age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2549	1	1811.6		0.719	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	409 (105-115)	0.0000147*	177	59.9		8.75	0.942	T	137		age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2550	1	1811.6		0.719	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	409 (180-200)	0.0000147*	130	61.3		6.25	0.885	T	137		age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2551	1	1811.6		0.719	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	410 (100-110)	0.0000147*	140	73.3		5.64	0.867	T	137		age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2552	1	1811.6		0.719	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	410 (180-200)	0.0000147*	159	84.7		5.52	0.868	T	137		age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2553	1	1811.6		0.719	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	411 (80-100)	0.0000147*	162	92		5.17	0.862	T	137		age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2554	1	1811.6		0.719	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	411 (180-200)	0.0000147*	167	96.6		5.09	0.861	T	137		age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2555	1	1625.26		0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-137	0.0000147*	148	26.6		16.78	1.097	T	139	Goldich and others (1961)	minimum age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2556	1	1625.26		0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-360	0.0000147*	114	78.2		4.26	0.801	T	139		minimum age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2557	1	1625.26		0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA212	0.0000147*	113	85.5		3.86	0.793	T	137	Goldich and others (1961)	minimum age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2558	1	1625.26		0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA 213	0.0000147*	118	45.5		7.6	0.88	T	139		minimum age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2559	1	1625.26		0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA131	0.0000147*	179	122		4.29	0.8	T	139	Goldich and others (1961)	minimum age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2560	1	1625.26		0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA232	0.0000147*	160	222		2.1	0.758	T	139	Goldich and others (1961)	minimum age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2561	1	1625.26		0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA233	0.0000147*	157	119		3.86	0.795	T	139	Goldich and others (1961)	minimum age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2562	1	1625.26		0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-96	0.0000147*	140	279		1.45	0.741	T	139	Goldich and others (1961)	minimum age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2563	1	1625.26		0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA35	0.0000147*	139	106		3.83	0.797	T	139	Goldich and others (1961)	minimum age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2564	1	1625.26		0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-38	0.0000147*	42	193		0.628	0.72	T	139	Goldich and others (1961)	minimum age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2565	1	1625.26		0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA 39	0.0000147*	171	113		4.44	0.814	T	139	Goldich and others (1961)	minimum age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2566	1	1625.26		0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA 40	0.0000147*	80.1	279		0.829	0.724	T	139	Goldich and others (1961)	minimum age of metamorphic crystallization		12-POINT WHOLE-ROCK ISOCHRON	
2726	1	252.56	1	0.734	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M3370	0.0000139*	2732	12.19		845	3.76	T	134		age of intrusion	EARLY STAGE	8-POINT MINERAL ISOCHRON	
2726	2	254.51		0.71	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M3370	0.0000139*	2732	12.19		845	3.76	T			age of intrusion	EARLY STAGE		
2726	3	267.08		0.734	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M3370	0.0000147*	2732	12.19		845	3.76	T			age of intrusion	EARLY STAGE		
2727	1	252.56	1	0.734	microcline	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	F3371A	0.0000139*	219	11.46		56.4	0.9344	T	134		age of intrusion	EARLY STAGE MICROPERTHITE	8-POINT MINERAL ISOCHRON	
2727	2	279.97		0.71	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	F3371A	0.0000139*	219	11.46		56.4	0.9344	T				EARLY-STAGE MICROPERTHITE(?)		MODEL AGE APPEARS TOO OLD
2727	3	263.98		0.734	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	F3371A	0.0000147*	219	11.46		56.4	0.9344	T			age of intrusion	EARLY-STAGE MICROPERTHITE		
2728	1	252.56	1	0.734	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	F3371B	0.0000139*	236	13.27		52.7	0.9214	T	134		age of intrusion	EARLY-STAGE MICROPERTHITE	8-POINT MINERAL ISOCHRON	
2728	2	282.9		0.71	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	F3371B	0.0000139*	236	13.27		52.7	0.9214	T				EARLY-STAGE MICROPERTHITE		MODEL AGE APPEARS TOO OLD
2728	3	263.98		0.734	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	F3371B	0.0000147*	236	13.27		52.7	0.9214	T			age of intrusion	EARLY-STAGE MICROPERTHITE		
2729	1	252.56	1	0.734	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	M3373	0.0000139*	1257	4.91		1011	4.3864	T	134		age of intrusion	EARLY-STAGE	8-POINT MINERAL ISOCHRON	
2729	2	256.47		0.71	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M3373	0.0000139*	1257	4.91		1011	4.3864	T			age of intrusion	EARLY-STAGE		
2729	3	263.98		0.734	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M3373	0.0000147*	1257	4.91		1011	4.3864	T			age of intrusion	EARLY-STAGE		
2730	1	252.56	1	0.734	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	F3374	0.0000139*	992	30.85		96.8	1.072	T	134		age of intrusion	EARLY-STAGE MICROPERTHITE	8-POINT MINERAL ISOCHRON	
2730	2	264.3		0.71	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	F3374	0.0000139*	992	30.85		96.8	1.072	T				EARLY-STAGE MICROPERTHITE		MODEL AGE APPEARS TOO OLD
2730	3	259.84		0.734	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	F3374	0.0000147*	992	30.85		96.8	1.072	T			age of intrusion	EARLY-STAGE MICROPERTHITE		
2731	1	252.56	1	0.734	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	F1114A	0.0000139*	1863	19		339.3	1.9377	T	134		age of intrusion	EARLY-STAGE; WITH SOME MUSCOVITE	8-POINT MINERAL ISOCHRON	
2731	2	259.41		0.71	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	F1114A	0.0000139*	1863	19		339.3	1.9377	T			age of intrusion	EARLY-STAGE; WITH SOME MUSCOVITE		
2731	3	263.98		0.734	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	F1114A	0.0000147*	1863	19		339.3	1.9377	T			age of intrusion	EARLY-STAGE; WITH SOME MUSCOVITE		
2732	1	252.56	1	0.734	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	F1114B	0.0000139*	472	38.2		36.1	0.86	T	134		age of intrusion	EARLY-STAGE	8-POINT MINERAL ISOCHRON	
2732	2	269.2		0.71	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	F1114B	0.0000139*	472	38.2		36.1	0.86	T				EARLY STAGE		MODEL AGE IS TOO OLD
2732	3	260.87		0.734	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	F1114B	0.0000147*	472	38.2		36.1	0.86	T			age of intrusion	EARLY STAGE		
2733	1	252.56	1	0.734	albite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A4774	0.0000139*	6.63	15.8		1.22	0.7391	T	134		age of intrusion	EARLY-STAGE	8-POINT MINERAL ISOCHRON	
2733	2	1679.79		0.71	albite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A4774	0.0000139*	6.63	15.8		1.22	0.7391	T				EARLY STAGE		SPURIOUS MODEL AGE
2733	3	305.38		0.734	albite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A4774	0.0000147*	6.63	19		1.22	0.7391	T			age of intrusion	EARLY-STAGE		AGE TOO OLD
2734	1	987.71		0.734	albite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A4725	0.0000139*	19.2	3.8		15	0.0454	T				LATE-STAGE CLEAVELANDITE		SPURIOUS MODEL AGE DUE TO *87SR-ENRICHMENT
2735	1	1671.96		0.734	albite		A4992	0.0000139*	9.5	4.5		6.18	0.8817	T				LATE-STAGE CLEAVELANDITE		SPURIOUS MODEL AGE DUE TO *87SR-ENRICHMENT
2736	1	1435.07		0.734	albite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A4993	0.0000139*	7.8	4.2		5.4	0.8451	T				LATE-STAGE		SPURIOUS MODEL AGE DUE TO *87SR-ENRICHMENT
2737	1	7394.61		0.734	albite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A1112	0.0000139*	4	3.6		3.35	1.087	T				LATE-STAGE CLEAVELANDITE		SPURIOUS MODEL AGE DUE TO *87SR-ENRICHMENT
2738	1	366.11		0.734	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	R1043	0.0000139*	125.8	100.6		3.63	0.7539	T						MODEL AGE APPEARS TOO OLD
2739	1	1161.95		0.734	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	R1044	0.0000139*	939.3	107.1		27.8	1.1937	T						SPURIOUS MODEL AGE DUE TO *87SR-ENRICHMENT
2740	1	289.75		0.734	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	R5030	0.0000139*	371.5	64.5		16.83	0.8043	T						MODEL AGE IS TOO OLD
2741	1	155.65		0.743	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	R5031A	0.0000139*				5.96	0.7482				age not evaluated		SR87/SR86 BY X-RAY	
2742	1	175.22		0.734	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	R50316	0.0000139*				15.8	0.7742				age not evaluated			
2743	1	234.94		0.734	lepidolite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L3375A	0.0000139*	7535	16.82		2248.9	8.223	T			minimum age of intrusion	LATE-STAGE		
2744	1	230.04		0.734	lepidolite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L3375B	0.0000139*	8333	19.66		2030.9	7.37	T			minimum age of intrusion	LATE-STAGE		
2745	1	226.13	4	0.7188	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4722	0.0000139*	69.5	321.9		0.61	0.726	T	135		minimum age of intrusion	PEGMATITE-SCHIST MIXTURE	5-POINT WHOLE-ROCK ISOCHRON	
2746	1	226.13	4	0.7188	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4723	0.0000139*	1457	124.5		35.14	0.826	T	135		minimum age of intrusion	PEGMATITE-SCHIST MIXTURE	5-POINT WHOLE-ROCK ISOCHRON	
2747	1	226.13	4	0.7188	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4718	0.0000139*	214.2	88.5		7.03	0.7442	T	135		minimum age of intrusion	PEGMATITE-SCHIST MIXTURE	5-POINT WHOLE-ROCK ISOCHRON	
2748	1	226.13	4	0.7188	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4720A	0.0000139*	567.8	12.4		134.8	1.156	T	135		minimum age of intrusion	PEGMATITE-SCHIST MIXTURE	5-POINT WHOLE-ROCK ISOCHRON	
2749	1	226.13	4	0.7188	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4787	0.0000139*				70.4	0.9403		135			SCHIST-APLITE MIXTURE	5-POINT WHOLE-ROCK ISOCHRON; 87RB/86SR BY X-RAY	CLOSE TO AGE OF PEGMATITE-APLITE
2750	1	415.05	41	0.7167	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R1108A	0.0000139*	325	229.7		4.11	0.7426	T	136		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
2751	1	415.05	41	0.7167	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R1108 B	0.0000139*	26.2	218.4		0.35	0.7162	T	136		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
2752	1	415.05	41	0.7167	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4717	0.0000139*	71	124.5		1.65	0.7271	T	136		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
2753	1	415.05	41	0.7167	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4719	0.0000139*	181.4	183		2.87	0.735	T	136		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
2754	1	415.05	41	0.7167	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4720B	0.0000139*	319.1	196.7		4.71	0.7419	T	136		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
2755	1	415.05	41	0.7167	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4721	0.0000139*	129.4	252.6		1.48	0.7244	T	136		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
2756	1	415.05	41	0.7167	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4788	0.0000139*	52.9	124.6		1.22	0.7263	T	136		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
2845	1	2545.14	130		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	36(KA-239)	0.0000139*	594	9.15		188	7.61	N		Goldich and others (1961)	age of intrusion			K-AR AGE IS 2570 M.Y.
2845	2	2554.93	130		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	36(KA-239)	0.0000139*	576	7.97		209	8.46	N		Goldich and others (1961)	age of intrusion		ANALYZED AT RESTON	
2846	1	2466.83	125		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	37(KA-249)	0.0000139*	470	14.2		95.8	4.12	N		Goldich and others (1961)	minimum age of intrusion			8-POINT WHOLE-ROCK ISOCHRON AGE IS 2680 M.Y.
2846	2	2339.57		0.7005	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	37(KA-249)	0.0000139*	256	255		2.942	0.7993	N			age not evaluated		DUPLICATE RB AND SR ANALYSES; INITIAL RATIO FROM WR ISOCHRON	
2847	1	2603.87	135		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	38(KA-17)	0.0000139*	4730	2		6847	258	N		Goldich and others (1961)	age of intrusion			K-AR AGE IS 2480 M.Y.
2848	1	2515.77	130		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	39(KA-88)	0.0000139*	1202	55.9		62.2	2.97	N		Goldich and others (1961)	age of intrusion			K-AR AGE IS 2480 M.Y.
2849	1	2623.45	95	0.7005	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	63	0.0000139*	95.6	352		0.786	0.7307	N	140		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
2850	1	2623.45	95	0.7005	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	64	0.0000139*	142	271		1.515	0.7565	N	140		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
2851	1	2623.45	95	0.7005	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	65	0.0000139*	106	303		1.013	0.7382	N	140		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
2852	1	2623.45	95	0.7005	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	66	0.0000139*	154	207		2.161	0.7838	N	140		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
2853	1	2623.45	95	0.7005	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	67	0.0000139*	107	733		0.426	0.7164	N	140		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
2854	1	2623.45	95	0.7005	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	68	0.0000139*	135	452		0.876	0.7339	N	140		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
2855	1	2623.45	95	0.7005	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	69	0.0000139*	112	306		1.067	0.7418	N	140		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
2856	1	2623.45	95	0.7005	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	70	0.0000139*	166	1295		0.374	0.7148	N	140		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
2856	2				microcline		70	0.0000139*	46.6	564		0.24	0.7088	N					"NO AGE CALCULATED; SAMPLE PLOTS CLOSE TO 2680 M.Y., 8-POINT WHOLE-ROCK ISOCHRON"	
2857	1				microcline		71	1.39E-05	163	592		0.804	0.7303	N					NO AGE CALCULATED; SAMPLE PLOTS CLOSE TO 2680 M.Y. 8-POINT WHOLE-ROCK ISOCHRON	
2858	1	2427.67	125		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	72(KA-236)	0.0000139*	553	59.7		26.8	1.64	N		Goldich and others (1961)	age of intrusion			K-AR AGE IS 2510 M.Y.
2859	1	2388.52	125		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	73(KA-237)	0.0000139*	364	7.8		135	5.36	N		Goldich and others (1961)	age of metamorphic crystallization			K-AR AGE IS 2540 M.Y.
2860	1	2594.08	135		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	74(KA-48)	0.0000139*	727	10.3		204	8.35	N		Goldich and others (1961)	age of intrusion			K-AR AGE IS 2350 M.Y.
2861	1	2613.66	135		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	75(KA-317	0.0000139*	319	9.33		99	4.45	N		Goldich and others (1961)	age of metamorphic crystallization			K-AR AGE IS 2610 M.Y.
2862	1	2408.09	125		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	76(KA-316)	0.0000139*	341	47.2		20.9	1.43	N		Goldich and others (1961)	initial age disturbed by later metamorphism			K-AR AGE IS 2550 M.Y.
2871	1	1086.96			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	128B	0.0000147*	2240	11.5	9.88			N			age of intrusion			
2872	1	755.7			illite group	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	128B	0.0000147*	235		0.72									AGE TOO YOUNG
3051	1	3445.73	150	0.7093	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MORT-1	0.0000139*	63.97	265.07		0.6977	0.7444	T	141		age of metamorphic crystallization		3-POINT WHOLE-ROCK ISOCHRON	HIGH INITIAL 87SR/86SR SUGGESTS THAT AMPHIBOLITE WAS ORIGINALLY A SEDIMENT
3052	1	3445.73	150	0.7093	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MORT-2	0.0000139*	2.91	75.07		0.1121	0.715	T	141		age of metamorphic crystallization		3-POINT WHOLE-ROCK ISOCHRON	HIGH INITIAL 87SR/86SR SUGGESTS THAT AMPHIBOLITE WAS ORIGINALLY A SEDIMENT
3052	2				hornblende		MORT-2	0.0000139*	11.28	18.17		1.7939	0.7647	T					NO AGE CALCULATED	
3053	1	3445.73	150	0.7093	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	SH-1	0.0000139*	197.8	998.19		0.5729	0.7376	T	141		age of metamorphic crystallization		3-POINT WHOLE-ROCK ISOCHRON	HIGH INITIAL 87SR/86SR SUGGESTS THAT AMPHIBOLITE WAS ORIGINALLY A SEDIMENT
3054	1				whole rock		AM-1	0.0000139*	11.55	393.16		0.085	0.7052	T			age not evaluated		"NO AGE CALCULATED, SAMPLE PLOTS VERY CLOSE TO 3500 M.Y. ISOCHRON OF MORTON GNEISS"	
3055	1	3462.37	140	0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GF-3	0.0000139*	27.05	407.09		0.1091	0.7111	T	142		minimum age of metamorphic crystallization		5-POINT WHOLE-ROCK ISOCHRON	
3055	2	1869.7		0.706	quartz	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-3	0.0000139*	6.04	401.25		0.0435	0.707	T			age of later metamorphism		3-POINT QUARTZ PLAGIOCLASE-WHOLE-ROCK ISOCHRON	ISOTOPIC SYSTEM IN MINERALS DISTURBED BY 1800 M.Y. METAMORPHIC EVENT.
3055	3	1977.23		0.706	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-3	0.0000147*	9.98	548.07		0.0526	0.7074	T					3-POINT QUARTZ-PLAGIOCLASE-WHOLE-ROCK ISOCHRON	ISOTOPIC SYSTEM IN MINERALS DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3055	4	1744.31		0.71	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-3	0.0000147*	282.6	33.1		24.683	1.2916	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	ISOTOPIC SYSTEM IN MINERALS DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3056	1	3462.37	140	0.7008	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GF-4	0.0000139*	56.33	465.56		0.3498	0.7183	T	142		minimum age of metamorphic crystallization		5-POINT WHOLE-ROCK ISOCHRON	
3056	2	1754.19		0.7095	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-4	0.0000139*	19.7	7296.8		0.0078	0.7097	T					2-POINT PLAGIOCLASE-WHOLE-ROCK ISOCHRON	ISOTOPIC SYSTEM IN MINERALS DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3056	3	1845.76		0.71	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-4	0.0000147*	218.9	112.1		5.6453	0.8512	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	ISOTOPIC SYSTEM IN MINERALS DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3056	4	1841.62	40	0.71	pyroxene	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-4	0.0000147*	3.51	8.38		1.2109	0.7394	T					5-POINT MINERAL-WHOLE-ROCK ISOCHRON	ISOTOPIC SYSTEM IN MINERALS DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3056	5	1841.62	40	0.71	Magnetite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-4	0.0000147*	6.79	23.45		0.8371	0.7332	T	143				5-POINT MINERAL-WHOLE-ROCK ISOCHRON	ISOTOPIC SYSTEM IN MINERALS DISTRUBED BY 1800 M.Y. METAMORPHIC EVENT
3057	1	1741.46	40	0.71	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-4	0.0000139*	218.9	112.1		5.6453	0.8512	T	143				5-POINT MINERAL-WHOLE-ROCK ISOCHRON	ISOTOPIC SYSTEM IN MINERALS DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3057	2	1741.46	40	0.71	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-4	0.0000139*	19.7	7296.8		0.0078	0.7097	T	143				5-POINT MINERAL-WHOLE-ROCK ISOCHRON	ISOTOPIC SYSTEM IN MINERALS DISTURBED IN 1800 M.Y. METAMORPHIC EVENT
3057	3	1841.62	40	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-4	0.0000147*	56.33	465.56		0.3498	0.7183	T	143				5-POINT MINERAL-WHOLE-ROCK ISOCHRON	ISOTOPIC SYSTEM IN MINERALS DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3057	4				garnet group		GF-4	0.0000147*	4.12	3.82		3.118	0.7934	T					NO AGE CALCULATED; DATA PLOTS NEAR 1779 M.Y. ISOCHRON FOR MINERALS AND WHOLE-ROCK	
3058	1	3462.37	140	0.7008	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GF-6	0.0000139*	59.28	510.52		0.3357	0.7174		142		minimum age of metamorphic crystallization		5-POINT WHOLE-ROCK ISOCHRON	
3058	2	1858.93		0.71	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-6	0.0000139*	256.33	78.53		9.4365	0.9609	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	ISOTOPIC SYSTEM IN MINERAL DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3058	3	1869.57		0.709	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-6	0.0000147*	12.76	777.92		0.0474	0.7101	T					2-POINT PLAGIOCLASE-WHOLE-ROCK ISOCHRON	ISOTOPIC SYSTEM IN MINERALS DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3059	1	3462.37	140	0.7008	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GF-20	0.0000139*	56.21	429.28		0.3786	0.7195	T	142		minimum age of metamorphic crystallization		5-POINT WHOLE-ROCK ISOCHRON	
3060	1				whole rock		GF-21	1.39E-05	53.19	463.2		0.332	0.715	T					NO AGE CALCULATED; ISOTOPIC SYSTEM APPARENTLY DISTURBED BY WEATHERING	
3061	1				whole rock		GF-22	1.39E-05	57.14	375.23		0.4402	0.7192	T					NO AGE CALCULATED; ISOTOPIC SYSTEM APPARENTLY DISTURBED BY WEATHERING	
3062	1	3462.37	140	0.7008	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GF-23	0.0000139*	105.02	354.96		0.8553	0.7442	T	142		minimum age of metamorphic crystallization		5-POINT WHOLE-ROCK ISOCHRON	
3063	1	3243.1	256	0.7011	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GF-1	0.0000139*	30.51	180.68		0.4882	0.7241	T	144		minimum age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON	
3064	1	3243.1	256	0.7011	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GF-2	0.0000139*	31.67	436.72		0.2097	0.7112	T	144		minimum age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON	
3065	1	3243.1	256	0.7011	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GF-5	0.0000139*	16.67	174.75		0.2755	0.7143	T	144		minimum age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON	
3065	2	1742.44		0.7107	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-5	0.0000139*	8.84	481.07		0.0532	0.7087	T					2-POINT PLAGIOCLASE-WHOLE ROCK ISOCHRON	ISOTOPIC SYSTEM IN MINERAL DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3065	3	1842.66		0.71	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-5	0.0000147*	242.47	64.04		10.946	0.9813	T			age of metamorphic crystallization		2-POINT BIOTITE-WHOLE ROCK ISOCHRON	ISOTOPIC SYSTEM IN MINERAL DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3066	1	3243.1	256	0.7011	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GF-24	0.0000139*	42.17	478.51		0.2548	0.7124	T	144		minimum age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON	
3067	1	2623.45	202	0.7037	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GF-30	0.0000139*	7.3	264.76		0.0797	0.7067	T	145		"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"		8-POINT WHOLE-ROCK ISOCHRON	
3068	1	2623.45	202	0.7037	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GF-31	0.0000139*	4.43	279.99		0.0457	0.7054	T	145		"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"		8-POINT WHOLE-ROCK ISOCHRON	
3068	2				plagioclase		GF-31	0.0000139*	5.03	354.45		0.041	0.7052	T					NO AGE CALCULATED	
3068	3	2494.83			Hornblende-pyroxene mixture	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-31	0.0000147*	1.72	47.11		0.1058	0.7075	T				A HORNBLENDE-PYROXENE MIXTURE	2-POINT HORNBLENDE-PYROXENE-WHOLE ROCK ISOCHRON	ISOTOPIC SYSTEM IN MINERALS DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3069	1	2623.45	202	0.7037	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GF-32	0.0000139*	2.97	269.24		0.0319	0.705	T	145		"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"		8-POINT WHOLE-ROCK ISOCHRON	
3069	2	1745.38			plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-32	0.0000139*	2.74	421.55		0.0188	0.7047	T					2-POINT PLAGIOCLASE-WHOLE-ROCK ISOCHRON	ISOTOPIC SYSTEM IN PLAGIOCLASE DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3069	3	1724.64			Hornblende-pyroxene mixture	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-32	0.0000147*	2.12	48		0.1279	0.7072	T				A HORNBLENDE-PYROXENE MIXTURE	2-POINT HORNBLENDE-PYROXENE-WHOLE-ROCK ISOCHRON	ISOTOPIC SYSTEM IN MINERALS DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3069	4	1732.92			plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-32	0.0000147*	2.74	421.55		0.0188	0.7047	T					"3-POINT PLAGIOCLASE-HORNBLENDE, PYROXENE-WHOLE-ROCK ISOCHRON"	ISOTOPIC SYSTEM IN MINERALS DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3069	5	1732.92			Hornblende-pyroxene mixture	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-32	0.0000147*	2.12	48		0.1279	0.7072	T				A HORNBLENDE-PYROXENE MIXTURE	"3-POINT PLAGIOCLASE-HORNBLENDE, PYROXENE-WHOLE-ROCK ISOCHRON"	ISOTOPIC SYSTEM IN MINERALS DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3070	1	2623.45	202	0.7037	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GF-33	0.0000139*	1.55	302.56		0.0148	0.7045	T	145		"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"		8-POINT WHOLE-ROCK ISOCHRON	
3070	2	1791.39			plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-33	0.0000139*	1.2	400.96		0.0086	0.7043	T					2-POINT PLAGIOCLASE-WHOLE ROCK ISOCHRON	ISOTOPIC SYSTEM IN PLAGIOCLASE DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3070	3	1977.23			Hornblende-pyroxene mixture	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-33	0.0000147*	1.55	35.02		0.1281	0.7075	T				A HORNBLENDE-PYROXENE MIXTURE	2-POINT HORNBLENDE-PYROXENE-WHOLE-ROCK ISOCHRON	ISOTOPIC SYSTEM IN MINERALS DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3070	4	1976.2			plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-33	0.0000147*	1.2	400.96		0.0086	0.7043	T					"3-POINT PLAGIOCLASE-HORNBLENDE, PYROXENE-WHOLE-ROCK ISOCHRON"	ISOTOPIC SYSTEM IN MINERALS DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3070	5	1976.2			Hornblende-pyroxene mixture	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	GF-33	0.0000147*	1.55	35.02		0.1281	0.7075	T				A HORNBLENDE-PYROXENE MIXTURE	"3-POINT PLAGIOCLASE-HORNBLENDE, PYROXENE-WHOLE-ROCK ISOCHRON"	ISOTOPIC SYSTEM IN MINERALS DISTURBED BY 1800 M.Y. METAMORPHIC EVENT
3071	1	2623.45	202	0.7037	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GF-35	0.0000139*	0.52	266.91		0.0057	0.7039	T	145		"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"		8-POINT WHOLE-ROCK ISOCHRON	
3072	1	2799.65	202	0.7037	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GF-36	0.0000139*	0.83	287.08		0.0084	0.7039	T	145		"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"		8-POINT WHOLE-ROCK ISOCHRON	
3073	1	2623.45	202	0.7037	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GF-37	0.0000139*	0.81	257.06		0.0091	0.704	T	145		"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"		8-POINT WHOLE-ROCK ISOCHRON	
3074	1	2623.45	202	0.7037	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	GF-38	0.0000139*	0.63	281.59		0.0064	0.704	T	145		"age of later metamorphism, initial age disturbed by later metamorphism"		8-POINT WHOLE-ROCK ISOCHRON	
3075	1				whole rock		GF-40	1.39E-05	1.29	236.6		0.0157	0.7053	T					NO AGE CALCULATED	ANALYTICAL DATA FOR WHOLE-ROCK SAMPLES FROM THIS GNEISS DO NOT FORM AN ISOCHRON BUT DO PLOT ABOVE A 3540-M.Y. ISOCHRON WHICH  SUGGESTS THAT THEY AR POSSIBLY 4000 M.Y. OLD.
3076	1				whole rock		GF-41	1.39E-05	4.15	263.94		0.0455	0.7092	T					NO AGE CALCULATED	ANALYTICAL DATA FOR WHOLE-ROCK SAMPLES FROM THIS GNEISS DO NOT FORM AN ISOCHRON BUT DO PLOT ABOVE A 3540-M.Y. ISOCHRON WHICH  SUGGESTS THAT THEY ARE POSSIBLY 4000 M.Y. OLD.
3077	1				whole rock		GF-42	1.39E-05	5	315.83		0.0457	0.7118	T					NO AGE CALCULATED	ANALYTICAL DATA FOR WHOLE-ROCK SAMPLES FROM THIS GNEISS DO NOT FORM AN ISOCHRON BUT DO PLOT ABOVE A 3540-M.Y. ISOCHRON WHICH SUGGESTS THAT THEY ARE POSSIBLY 4000 M.Y. OLD
3078	1				whole rock		GF-43	1.39E-05	9.85	278.03		0.1024	0.71	T					NO AGE CALCULATED	ANALYTICAL DATA FOR WHOLE-ROCK SAMPLES FROM THIS GNEISS DO NOT FROM AN ISOCHRON BUT DO PLOT ABOVE A 3540-M.Y. ISOCHRON WHICH  SUGGESTS THAT THEY ARE POSSIBLY 4000 M.Y. OLD.
3079	1				whole rock		GF-44	1.39E-05	2.58	311.67		0.024	0.7073	T					NO AGE CALCULATED	ANALYTICAL DATA FOR WHOLE-ROCK SAMPLES FROM THIS GNEISS DO NOT FORM AN ISOCHRON BUT DO PLOT ABOVE A 3540-M.Y. ISOCHRON WHICH  SUGGESTS THAT THEY ARE 4000 M.Y. OLD.
3080	1				whole rock		GF-45	1.39E-05	2.77	347.85		0.0231	0.7028	T					NO AGE CALCULATED	ANALYTICAL DATA FOR WHOLE-ROCK SAMPLES FROM THIS GNEISS DO NOT FORM AN ISOCHRON BUT DO PLOT ABOVE A 3540-M.Y. ISOCHRON WHICH SUGGESTS THAT THEY ARE POSSIBLY 4000 M.Y. OLD.
3081	1				whole rock		GF-46	1.39E-05	1.17	259.5		0.013	0.705	T					NO AGE CALCULATED	ANALYTICAL DATA FOR WHOLE-ROCK SAMPLES FROM THIS GNEISS DO NOT FORM AN ISOCHRON BUT DO PLOT ABOVE A 3540-M.Y. ISOCHRON WHICH  SUGGESTS THAT THEY ARE POSSIBLY 4000 M.Y. OLD.
3082	1				whole rock		GF-47	1.39E-05	13.78	332.48		0.1198	0.7114	T					NO AGE CALCULATED	ANALYTICAL DATA FOR WHOLE-ROCK SAMPLES FROM THIS GNEISS DO NOT FORM AN ISOCHRON BUT DO PLOT ABOVE A 3540-M.Y. ISOCHRON WHICH  SUGGESTS THAT THEY ARE POSSIBLY 4000 M.Y. OLD.
3085	1	3719.82		0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-209	0.0000139*	79.4	204.1		1.132	0.7619	T	146	Farhat and Wetherill (1975)	minimum age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON	
3085	2	3866.66	70	0.698	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-209	0.0000139*	79.4	204.1		1.132	0.7619	T	147		minimum age of metamorphic crystallization		5-POINT WHOLE-ROCK ISOCHRON	
3086	1				whole rock		KA-54	1.39E-05	75	270.1		0.8066	0.7455	T					NO AGE CALCULATED	
3087	1	3719.82		0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	605	0.0000139*	80	287.8		0.8076	0.7434	T	146	Farhat and Wetherill (1975)	minimum age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON	
3087	2	3866.66	70	0.698	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	605	0.0000139*	80	287.8		0.8076	0.7434	T	147		minimum age of metamorphic crystallization		5-POINT WHOLE-ROCK ISOCHRON	
3088	1	3719.82		0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	606	0.0000139*	89.1	256.8		1.009	0.7544	T	146	Farhat and Wetherill (1975)	minimum age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON	
3088	2	3866.66	70	0.698	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	606	0.0000139*	89.1	256.8		1.009	0.7544	T	147		minimum age of metamorphic crystallization		5-POINT WHOLE-ROCK ISOCHRON	
3089	1				whole rock		607	1.39E-05	41.5	378.7		0.3183	0.7206	T	146				NO AGE CALCULATED	
3090	1	3719.82		0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	608	0.0000139*	92.7	307.2		0.8769	0.7472	T	146	Farhat and Wetherill (1975)	minimum age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON	
3090	2	3866.66	70	0.698	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	608	0.0000139*	92.7	307.2		0.8769	0.7472	T	147		minimum age of metamorphic crystallization		5-POINT WHOLE-ROCK ISOCHRON	
3091	1	3719.82		0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	609	0.0000139*	71.7	339		0.6136	0.7324	T	146	Farhat and Wetherill (1975)	minimum age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON	
3091	2	3866.66	70	0.698	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	609	0.0000139*	71.7	339		0.6136	0.7324	T	147		minimum age of metamorphic crystallization		5-POINT WHOLE-ROCK ISOCHRON	
3092	1	3719.82		0.7	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	339	0.0000139*	35.5	587		0.175	0.7096	T	146	Goldich and others (1970)	minimum age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON	
3100	1	2419.84	22	0.7121	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MV-102 (4R)	0.0000139*	201.5	256.3		2.262	0.7901	T	148	Goldich and Hedge (1974)	age of metamorphic crystallization	RED MATERIAL	7-POINT WHOLE ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN FROM A BLOCK ABOUT 2 M IN SIZE	
3101	1	2419.84	22	0.7121	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MV-102 (4D)	0.0000139*	84.3	258.3		0.9393	0.7451	T	148	Goldich and Hedge (1974)	age of metamorphic crystallization	DARK-COLORED MATERIAL	7-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN FROM A BLOCK ABOUT 2 M IN SIZE)	
3102	1	2419.84	22	0.7121	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MY-102 (5R)	0.0000139*	243.2	291.5		2.4005	0.7963	T	148	Goldich and Hedge (1974)	age of metamorphic crystallization	RED MATERIAL	7-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN FROM A BLOCK ABOUT 2 M IN SIZE)	
3103	1	2419.84	22	0.7121	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MV-102 (5D)	0.0000139*	103.2	256.5		1.1576	0.7531	T	148	Goldich and Hedge (1974)	age of metamorphic crystallization	DARK-COLORED MATERIAL	7-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES COLLECTED FROM A BLOCK ABOUT 2 M IN SIZE)	
3104	1	2419.84	22	0.7121	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MV-102 (3R)	0.0000139*	232.6	262.9		2.5442	0.8009	T	148	Goldich and Hedge (1974)	age of metamorphic crystallization	RED MATERIAL	7-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN FROM A BLOCK ABOUT 2 M IN SIZE)	
3105	1	2419.84	22	0.7121	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MV-102 (3T)	0.0000139*	122.3	249.4		1.4111	0.7615	T	148	Goldich and Hedge (1974)	age of metamorphic crystallization	TRANSITIONAL PHASE BETWEEN DARK AND RED MATERIAL	7-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN FROM A BLOCK ABOUT 2 M IN SIZE)	
3106	1	2419.84	22	0.7121	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MV-102 (3D)	0.0000139*	71.4	278.1		0.7382	0.7376	T	148	Goldich and Hedge (1974)	age of metamorphic crystallization	DARK-COLORED MATERIAL	7-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN FROM A BLOCK ABOUT 2 M IN SIZE)	
3107	1	2669.46	199	0.711	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MV-100 (3R)	0.0000139*	130.6	320.9		1.1705	0.756	T	149	Goldich and Hedge (1974)	age of metamorphic crystallization	RED MATERIAL	6-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN FROM A BLOCK ABOUT 2 M IN SIZE)	
3107	2	2936.7	90	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MV-100 (3R)	0.0000139*	130.6	320.9		1.1705	0.756	T	151	Goldich and Hedge (1974)	age of intrusion	RED GRANITIC MATERIAL	10-POINT WHOLE-ROCK ISOCHRON (ANALYTICAL DATA NOT GIVEN FOR 3 SAMPLES	OR AGE OF REGIONAL HIGH-GRADE METAMORPHISM.
3108	1	2669.46	199	0.711	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MV-100 (3D)	0.0000139*	115.5	314.9		1.0551	0.7515	T	149	Goldich and Hedge (1974)	age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN FROM A BLOCK ABOUT 2 M IN SIZE)	
3109	1	2669.46	199	0.711	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MV-100 (5R)	0.0000139*	115.6	329.7		1.0085	0.7506	T	149	Goldich and Hedge (1974)	age of metamorphic crystallization	RED MATERIAL	6-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN FROM A BLOCK ABOUT 2 M IN SIZE)	
3109	2	2936.7	90	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MV-100 (5R)	0.0000139*	115.6	329.7		1.0085	0.7506	T	151	Goldich and Hedge (1974)	age of intrusion	RED GRANITIC MATERIAL	10-POINT WHOLE-ROCK ISOCHRON (ANALYTICAL DATA NOT GIVEN FOR 3 SAMPLES)	OR AGE OF REGIONAL HIGH-GRADE METAMORPHISM
3110	1	2669.46	199	0.711	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MV-100 (5D)	0.0000139*	112	331.8		0.9712	0.7484	T	149	Goldich and Hedge (1974)	age of metamorphic crystallization	DARK-COLORED MATERIAL	6-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES WERE TAKEN FROM A BLOCK ABOUT 2 M IN SIZE)	
3111	1	2669.46	199	0.711	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MV-100 (6R)	0.0000139*	119.6	329.5		1.0437	0.7512	T	149	Goldich and Hedge (1974)	age of metamorphic crystallization	RED MATERIAL	6-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN FROM A BLOCK ABOUT 2 M IN SIZE)	
3111	2	2936.7	90	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MV-100 (6R)	0.0000139*	119.6	329.5		1.0437	0.7512	T	151	Goldich and Hedge (1974)	age of intrusion	RED GRANITIC MATERIAL	10-POINT WHOLE-ROCK ISOCHRON (ANALYTICAL DATA NOT GIVEN FOR 3 POINTS)	OR AGE OF REGIONAL HIGH-GRADE METAMORPHISM
3112	1	2669.46	199	0.711	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MV-100 (6D)	0.0000139*	115.5	335.8		0.9898	0.7488	T	149	Goldich and Hedge (1974)	age of metamorphic crystallization	DARK-COLORED MATERIAL	6-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN FROM A BLOCK ABOUT 2 M IN SIZE)	
3113	1	3045.36	202	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-209 (MV-9-2R)	0.0000139*	77.1	501.6		0.4422	0.7246	T	150	Goldich and Hedge (1974)		RED MATERIAL	9-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN FROM AN AREA OF ABOUT 400 SQUARE METERS)	INCOMPLETE ISOTOPIC RE-EQUILIBRATION DURING 2500 M.Y. OLD METAMORPHIC EVENT
3113	2	2936.7	90	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-209 (MV-9-2R)	0.0000139*	77.1	501.6		0.4422	0.7246	T	151	Goldich and Hedge (1974)	age of intrusion	RED GRANITIC MATERIAL	10-POINT WHOLE-ROCK ISOCHRON (ANALYTICAL DATA NOT GIVEN FOR 3 POINTS)	OR AGE OF REGIONAL HIGH-GRADE METAMORPHISM
3114	1	3045.36	202	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-209 (MV-9-4D+R)	0.0000139*	70.7	305.4		0.6662	0.7373	T	150	Goldich and Hedge (1974)			9-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN FROM AN AREA OF ABOUT 400 SQUARE METERS)	INCOMPLETE ISOTOPIC RE-EQUILIBRATION DURING A 2500 M.Y. OLD METAMORPHIC EVENT
3115	1	3045.36	202	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-209 (MV-9-6R)	0.0000139*	100.1	265.8		1.0826	0.7526	T	150	Goldich and Hedge (1974)		RED MATERIAL	9-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN FROM AN AREA OF ABOUT 400 SQUARE METERS)	INCOMPLETE ISOTOPIC RE-EQUILIBRATION DURING A 2500 M.Y. OLD METAMORPHIC EVENT
3115	2	2936.7	90	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-209 (MV-9-6R)	0.0000139*	100.1	265.8		1.0826	0.7526	T	151	Goldich and Hedge (1974)		RED GRANITIC MATERIAL	10-POINT WHOLE-ROCK ISOCHRON (ANALYTICAL DATA NOT GIVEN FOR 3 SAMPLES)	OR AGE OF REGIONAL HIGH-GRADE METAMORPHIC EVENT
3116	1	3045.36	202	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-209 (MV-9-5D)	0.0000139*	92.3	204.3		1.2994	0.7616	T	150	Goldich and Hedge (1974)		DARK-COLORED MATERIAL	9-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN FROM AN AREA OF ABOUT 400 SQUARE METERS)	INCOMPLETE ISOTOPIC RE-EQUILIBRATION DURING A 2500 M.Y. OLD METAMORPHIC EVENT
3117	1	3045.36	202	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-209 (MV-9-8R)	0.0000139*	124.1	193		1.858	0.7849	T	150	Goldich and Hedge (1974)		RED MATERIAL	9-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES WERE TAKEN FROM AN AREA OF ABOUT 400 SQUARE METERS)	INCOMPLETE ISOTOPIC RE-EQUILIBRAITON DURING 2500 M.Y. OLD METAMORPHIC EVENT
3117	2	2936.7	90	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-209 (MV-9-8R)	0.0000139*	124.1	193		1.858	0.7849	T	151	Goldich and Hedge (1974)	age of intrusion	RED GRANITIC MATERIAL	10-POINT WHOLE-ROCK ISOCHRON (ANALYTICAL DATA FOR 3 SAMPLES NOT GIVEN)	OR AGE OF REGIONAL HIGH-GRADE METAMORPHISM
3118	1	3045.36	202	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA 209 (MV-9-1R)	0.0000139*	91.6	451.3		0.584	0.7309	T	150	Goldich and Hedge (1974)		RED MATERIAL	9-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN WITHIN AN AREA OF ABOUT 400 SQUARE METERS)	INCOMPLETE ISOTOPIC RE-EQUILIBRATION DURING 2500 M.Y. OLD METAMORPHIC EVENT
3118	2	2936.7	90	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-209 (MV-9-1R)	0.0000139*	91.6	451.3		0.584	0.7309	T	151	Goldich and Hedge (1974)	age of intrusion	RED GRANITIC MATERIAL	10-POINT WHOLE-ROCK ISOCHRON (ANALYTICAL DATA NOT GIVEN FOR 3 SAMPLES)	OR AGE OF REGIONAL HIGH-GRADE METAMORPHISM
3119	1	3045.36	202	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-209 (MV-104-4D)	0.0000139*	86	211.7		1.1696	0.7612	T	150	Goldich and Hedge (1974)		DARK-COLORED MATERIAL	9-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN FROM AN AREA OF ABOUT 400 SQUARE METERS)	INCOMPLETE ISOTOPIC RE-EQUILIBRATION DURING A 2500 M.Y. OLD METAMORPHIC EVENT
3120	1	3045.36	202	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-209 (MV-104-4D)	0.0000139*	86	211.7		1.1696	0.7612	T	150	Goldich and Hedge (1974)		DARK-COLORED MATERIAL	9-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN FROM AN AREA OF ABOUT 400 SQUARE METERS)	INCOMPLETE ISOTOPIC RE-EQUILIBRATION DURING A 2500 M.Y. OLD METAMORPHIC EVENT
3121	1	3045.36	202	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-209 (MV-104-9D)	0.0000139*	88.6	197.3		1.2918	0.7625	T	150	Goldich and Hedge (1974)		DARK-COLORED MATERIAL	9-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN FROM AN AREA OF ABOUT 400 SQUARE METERS)	INCOMPLETE ISOTOPIC RE-EQUILIBRATION DURING A 2500 M.Y. OLD METAMORPHIC EVENT
3122	1	3045.36	202	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	KA-209 (MV-107-4D)	0.0000139*	62.5	250.6		0.718	0.7427	T	150	Goldich and Hedge (1974)		DARK-COLORED MATERIAL	9-POINT WHOLE-ROCK ISOCHRON (ALL WHOLE-ROCK SAMPLES TAKEN FROM AN AREA OF ABOUT 400 SQUARE METERS)	INCOMPLETE ISOTOPIC RE-EQUILIBRATION DURING A 2500 M.Y. OLD METAMORPHIC EVENT
3133	1	406.24	45		glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	GL-1	0.0000139*	193	10.6	0.31			N						AGE IS TOO YOUNG
3134	1	425.82	95		glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	GL-12	0.0000139*	196	10.8	0.34			N						AGE IS TOO YOUNG
3135	1	49.92	21		glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	GL-10	0.0000139*	260	11.5	0.05			N			age meaning uncertain (geologic factors)			
3187	1		16		lepidolite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	21	1.19E-11; 0.272 gm/gm						T			age of intrusion		CONSTANTS:  87RB LAMBDA-BETA = 1.19 E-11/YR; 87RB = 0.272 GM/GM TOTAL RB; NO ANALYTICAL DATA GIVEN	
3357	1	147.81	7	0.706	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	62-MW-60	0.0000139*	348	7.42		136	0.9913	T			age of intrusion			
3357	2	114.53	3	0.706	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	62-MW-60	0.0000139*	1671	3.44		1814	3.67	T			minimum age of intrusion			REDUCED AGE DUE TO LOSS OF ARGON FROM THERMAL STRESS
3365	1	88.1	5	0.706	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	226-MW-61	0.0000139*	582	20.04		84.9	0.8123	T						REDUCED AGE DUE TO LOSS OF ARGON FROM THERMAL STRESS
3392	1	27.41	3	0.714	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	284-DL-63	0.0000139*	529	8.88		173	0.7821	T			age of intrusion			
3559	1				whole rock		1(GAT-261)	0.0000147*	34	869			0.7048	T					NO AGE DETERMINED	AGE STATED AS BEING PLEISTOCENE
3560	1				whole rock		7(2-42-47B)	0.0000147*	76	881			0.7061	T					NO AGE DETERMINED	AGE STATED AS BEING 5 M.Y.
3561	1				whole rock		8(R3A)	0.0000147*	24	1371			0.7063	T					NO AGE DETERMINED	AGE STATED AS BEING PLIOCENE
3562	1				whole rock		9(N-95)	0.0000147*	26	1005			0.7068	T					NO AGE DETERMINED	AGE STATED AS BEING APPROXIMATELY 6 M.Y.
3563	1				whole rock		10(BTT-TG)	0.0000147*	26	1252			0.707	T					NO AGE DETERMINED	AGE STATED AS BEING 7 M.Y.
3564	1				whole rock		11(OPT-10)	0.0000147*	58	1052			0.7067	T					NO AGE DETERMINED	AGE STATED AS BEING APPROXIMATELY 6 M.Y.
3565	1				whole rock		12(TBMB)	0.0000147*	50	970			0.7069	T					RB AND SR VALUES ARE APPROXIMATIONS; NO AGE DETERMINED	AGE STATED AS BEING APPROXIMATELY 6 M.Y.
3566	1				whole rock		13(SL-62-85)	0.0000147*	30	1297			0.7072	T					NO AGE DETERMINED	AGE STATED AS BEING BETWEEN 7 AND 11 M.Y.
3567	1				whole rock		14(MS67B313)	0.0000147*	22	428			0.7036	T					NO AGE DETERMINED	AGE STATED AS BEING LESS THAN 20 M.Y.
3568	1				whole rock		15(CN-E-14)	0.0000147*	22	700			0.7061	T					NO AGE DETERMINED	AGE STATED AS BEING LESS THAN 20 M.Y.
3569	1				whole rock		16(KW-31)	0.0000147*	33	348			0.7056	T					NO AGE DETERMINED	AGE STATED AS BEING APPROXIMATELY 13 M.Y.
3570	1				whole rock		17(TP-26)	0.0000147*	47	1343			0.7078	T					NO AGE DETERMINED	AGE STATED AS BEING 16 M.Y.
3783	1	62.11	6		whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	5	0.0000147*	99	380			0.7216	T			age of intrusion		2-POINT MINERAL-WHOLE-ROCK ISOCHRON USING RB/SR AS ABSCISSA INSTEAD OF 87RB/86SR. RB AND SR VALUES OBTAINED BY X-RAY FLUORESCENCE	"APPEARS TO HAVE A MINIMUM AGE OF 60 M.Y., POSSIBLE MAXIMUM AGE OF 90 M.Y."
3783	2	62.11	6		muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	5	0.0000147*	153	15.3			0.74663	T					2-POINT MINERAL-WHOLE-ROCK ISOCHRON USING RB/SR AS ABSCISSA INSTEAD OF 87RB/86SR. RB AND SR VALUES OBTAINED BY X-RAY FLUORESCENCE	
3784	1	57.97	6		whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	8	0.0000147*	105	393			0.7246	T					2-POINT MINERAL-WHOLE-ROCK ISOCHRON USING RB/SR AS ABSCISSA INSTEAD OF 87RB/86SR. RB AND SR VALUES OBTAINED BY X-RAY FLUORESCENCE	"APPEARS TO HAVE A MINIMUM AGE OF 60 M.Y., POSSIBLE MAXIMUM AGE OF 90 M.Y."
3784	2	57.97	6		muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	8	0.0000147*	305	34			0.7453	T					2-POINT MINERAL-WHOLE-ROCK ISOCHRON USING RB/SR AS ABSCISSA INSTEAD OF 87RB/86SR. RB AND SR VALUES OBTAINED BY X-RAY FLUORESCENCE.	
3888	1	74.53	7	0.719	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	2C(245-MW-61)	0.0000147*	213	14.6		42.1	0.7614	T			minimum age of intrusion		"INITIAL 87SR/86SR IS ASSUMED; ANALYTICAL DATA IS FROM Z. PETERMAN, USGS"	
4102	1			0.7055	whole rock		1(WASH-0B)	not given	131	83			0.7055	T					NO AGE CALCULATED	AGE LESS THAN ONE M.Y.
4103	1			0.7033	whole rock		2(MESA-B)	not given	13	403			0.7033	T					NO AGE CALCULATED	AGE KNOWN TO BE 1.2 M.Y.
4104	1			0.7038	whole rock		3(WPB)	not given	7	291			0.7038	T					NO AGE CALCULATED	AGE IS LESS THAN 15 M.Y.
4105	1			0.7046	whole rock		4(B)	not given	52	725			0.7046	T					NO AGE CALCULATED	AGE KNOWN TO BE 13 M.Y.
4106	1			0.7045	whole rock		5(M-26)	not given	60	438			0.7046	T					NO AGE CALCULATED	AGE IS LESS THAN 15 M.Y.
4107	1			0.7047	whole rock		6(N-13A)	not given	61	146			0.7049	T					NO AGE CALCULATED	"K-AR AGE OF 15.3 +/-0.5 M.Y. REPORTED FOR THIS SAMPLE (NOBLE AND OTHERS, 1970)"
4108	1			0.7057	sanidine		7(M-90S)	not given	127	12.3			0.712	T					NO AGE CALCULATED	AGE KNOWN TO BE 15.2
4109	1			0.7051	sanidine		8(N9-117-S)	not given	39	45			0.7056	T					NO AGE CALCULATED	AGE KNOWN TO BE 15.6 M.Y.
4110	1			0.7044	sanidine		9(NN-31-3-1-S)	not given	34	22			0.7053	T					NO AGE CALCULATED	AGE KNOWN TO BE 15.8 M.Y.
4111	1			0.7023	sanidine		10(N-42-S)	not given	62	7.8			0.7074	T					NO AGE CALCULATED	"K-AR AGE OF 15.7 +/-0.5 M.Y. REPORTED FOR THIS SAMPLE (NOBLE AND OTHERS, 1970)"
4112	1			0.7041	whole rock		11(N70-30)	not given	106	219			0.7044	T					NO AGE CALCULATED	AGE IS ABOUT 15.6 M.Y.
4113	1			0.704	whole rock		12(N9-123)	not given	80	579			0.7041	T					NO AGE CALCULATED	AGE IS APPROXIMATELY 16 M.Y.
4114	1			0.7041	whole rock		13(N9-114)	not given	36	476			0.7041	T					NO AGE CALCULATED	AGE AROUND 15.6 M.Y.
4115	1			0.7041	whole rock		14(18)	not given	40	417			0.7041	T					NO AGE CALCULATED	AGE IS ABOUT 15.5 M.Y.
4116	1			0.7052	sanidine		19(N-SL-C3-S)	not given	42	8.5			0.7101	T					NO AGE CALCULATED	"K-AR AGE OF 23.9 +/-0.7 M.Y. FOR THIS SAMPLE (NOBLE AND OTHERS, 1970)"
4117	1			0.7046	whole rock		20(N9-122B)	not given	151	153			0.7055	T					NO AGE CALCULATED	AGE KNOWN TO BE 24 M.Y.
4118	1			0.7054	whole rock		21	not given	156	87			0.7072	T					NO AGE CALCULATED	AGE ABOUT 23 M.Y.
4119	1			0.7047	whole rock		22(N70-22)	not given	11	978			0.7047	T					NO AGE CALCULATED	AGE IS 24.5 M.Y.
4120	1			0.7042	whole rock		23(N70-6)	not given	151	540			0.7046	T					NO AGE CALCULATED	AGE ABOUT 32 M.Y.
4121	1			0.7037	whole rock		15(NL-18-6)	not given	22	500			0.7038	T					NO AGE CALCULATED	AGE IS APPROXIMATELY 15 M.Y.
4122	1			0.7039	whole rock		16(NL-15A)	not given	12	640			0.7039	T					AGE NOT CALCULATED	AGE IS APPROXIMATELY 15 M.Y.
4123	1			0.7037	whole rock		17(AGV-1)	not given	69	688			0.7037	T					AGE NOT CALCULATED	AGE IS APPROXIMATELY 16 M.Y.
4124	1			0.7043	sanidine		18(GWW-3-60-S)	not given	26	33			0.7043	T					AGE NOT CALCULATED	AGE IS APPROXIMATELY 26 M.Y.
4125	1			0.704	whole rock		24(WR-UC)	not given	32	726			0.7041	T					AGE NOT CALCULATED	AGE IS LESS THAN 35 M.Y.
4126	1			0.7029	whole rock		25(WR-ML-3)	not given	21	606			0.703	T					AGE NOT CALCULATED	AGE IS APPROXIMATELY 35 TO 40 M.Y.
4127	1			0.7029	whole rock		26(WR-LC)	not given	18	488			0.7029	T					AGE NOT CALCULATED	AGE IS APPROXIMATELY 40 M.Y.
4142	1	29.27	6		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8(S-ERP4063A/N-KR-1)	0.0000139*	381	63.7			0.717	T			minimum age of intrusion			
4145	1	150.75	25		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	11(S-EPR4064C)	0.0000139*	600	33.1			0.8236	T			age of intrusion			THIS PLUTON DATED AS 152 M.Y. BY ARMSTRONG (1970); K-AR AGE ON SAME MUSCOVITE SAMPLE IS 178 M.Y.
4146	1	139.98	15		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	12(S-EPR4064D)	0.0000139*	273	55.3			0.738	T			age of intrusion	FRESH MUSCOVITE		THIS PLUTON PREVIOUSLY DATED AS 152 M.Y. BY ARMSTRONG (1970)
4151	1	73.42	6		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	17(S-EPR4094E/SCE1021)	0.0000139*	1184	45.3			0.79	T			age of intrusion			
4153	1	84.19	73		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	19(S-EPR4120B)	0.0000139*	366	153			0.7182	T				ALTERED BIOTITE		
4153	2	73.42	58		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	19(S-EPR4120B)	0.0000139*	454	151			0.719	T						
4291	1	1010.22		0.706	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	N-6	0.0000139*	377.5	165.6	1.55	6.598	0.8019	N			age of intrusion			RB-SR AGE OF 1060 M.Y. WAS REPORTED FOR THIS SAMPLE BY VOLBORTH (1962)
4291	2	804.66		0.706	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	N-6	0.0000139*	947	22.57	3.08	121.4	2.101	N						RB-SR AGE OF 830 M.Y. WAS REPORTED FOR THIS SAMPLE BY VOLBORTH (1962); EXTENSIVE LOSS OF RADIOGENIC STRONTIUM CAUSED LOW AGE
4292	1	1670.98		0.706	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	N-10	0.0000139*	605.3	164.7	4.12	10.64	0.9613	N			age of intrusion			A RB-SR AGE OF 1690 M.Y. WAS REPORTED FOR THIS SAMPLE BY LANPHERE AND WASSERBURG (1963). A RB-SR AGE OF 1700 M.Y. WAS REPORTED FOR THIS SAMPLE BY VOLBORTH (1962)
4292	2	1576.03		0.706	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	N-10	0.0000139*	815.9	7.65	5.23	308.6	7.69	N			age of intrusion	MUSCOVITE BOOK ABOUT 3 INCHES SQUARE		A RB-SR AGE OF 1625 M.Y. WAS REPORTED FOR THIS SAMPLE BY LANPHERE AND WASSERBURG (1963). A RB-SR AGE OF 1630 M.Y. WAS REPORTED FOR THIS SAMPLE BY VOLBORTH (1962)
4293	1	1324.45		0.706	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	N-11	0.0000139*	1225	3.64	6.59	973.8	19.2	N			age of intrusion			AGE OF 1360 M.Y. WAS REPORTED FOR THIS SAMPLE BY LANPHERE AND WASSERBURG (1963)
4294	1	1331.3	150	0.706	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	N-15	0.0000139*	291.5	231.7	1.58	3.64	0.7755	N						AGE OF 1425 M.Y. WAS REPORTED FOR THIS SAMPLE BY LAMPHERE AND WASSERBURG (1963)
4294	2	1425.28	80	0.706	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	N-15	0.0000139*	326.2	224	1.92	4.215	0.7922	N			minimum age of intrusion			
4295	1	1415.49		0.712	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	N-17	0.0000139*	666	16.69	3.85	115.5	3.059						2-POINT BIOTITE-PLAGIOCLASE ISOCHRON	AGE IS TOO LOW
4295	2	1415.49		0.712	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	N-17	0.0000139*	19.35	77.44	0.17	0.7232	0.7282	N					2-POINT BIOTITE-PLAGIOCLASE ISOCHRON	AGE IS TOO LOW
4295	3	1653.21		0.712	microcline	Conventional Rb-Sr (measured initial 87Sr/86Sr)	N-17	0.0000147*	277.6	266.6	1.92	3.013	0.7796	N			minimum age of metamorphic crystallization			AGE OF 1670 M.Y. WAS REPORTED FOR THIS SAMPLE BY LANPHERE AND WASSERBURG (1963)
4295	4	1677.02		0.712	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	N-17	0.0000147*	221.85	115.35	1.5	5.565	0.8384	N			age of metamorphic crystallization		"2-POINT AVERAGED WHOLE-ROCK-PLAGIOCLASE ISOCHRON; SR-87 = 1.494 & 1.500 PPM, SR = 115.1 &115.6 PPM , RB = 217.8 & 225.9 PPM, RB-87/SR-86 = 5.476 & 5.654, SR-87/SR-86 = 0.8384 & 0.8385"	
4295	5	1677.02		0.712	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	N-17	0.0000147*	19.35	77.44	0.17	0.7232	0.7282	N			age of metamorphic crystallization		2-POINT AVERAGED WHOLE-ROCK-PLAGIOCLASE ISOCHRON	
4296	1	1306.83		0.706	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	N-23	0.0000139*	1463	3.32	7.77	1276	24.6	N			age of intrusion			A RB-SR AGE OF 1340 M.Y. WAS REPORTED FOR THIS SAMPLE BY LANPHERE AND WASSERBURG (1963)
4297	1	1646.51		0.706	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	N-25	0.0000139*	611.6	110.3	4.1	16.04	1.085	N			age of intrusion	A LARGE SINGLE CRYSTAL		A RB-SR AGE OF 1700 M.Y. WAS REPORTED FOR THIS SAMPLE BY VOLBORTH (1962)
4298	1	1009.25		0.706	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	N-29	0.0000139*	314.5	201.8	1.3	4.511	0.7717	N			age of intrusion			A RB-SR AGE OF 1040 M.Y. WAS REPORTED FOR THIS SAMPLE BY LANPHERE AND WASSERBURG (1963). A RB-SR AGE OF 1090 M.Y. WAS REPORTED FOR THIS SAMPLE BY VOLBORTH (1962)
4299	1	1038.61		0.706	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	AV-40	0.0000139*	489.8	75.62	2.07	18.75	0.985	N			age of intrusion			A RB-SR AGE OF 1065 M.Y. WAS REPORTED FOR THIS SAMPLE BY LANPHERE AND WASSERBURG (1963)
4420	1	1349.9		0.706	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	U-1	0.0000139*	352.8	46.4	1.94	21.99	1.132	N						AGE APPEARS TOO LOW; PROBABLE LOSS OF RADIOGENIC STRONTIUM
4421	1	1468.35	110	0.7606	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	U-2F	0.0000139*	245.3	273.5	1.48	2.596	0.7607	N			minimum age of intrusion			
4423	1	1478.14		0.7026	biotite	Conventional Rb-Sr (measured initial 87Sr/86Sr)	A-3	0.0000139*	649.1	28.2	3.92	66.59	2.122	N				BIOTITE 1	A 1517 M.Y. AGE WAS ALSO DETERMINED FOR THIS SAMPLE BY A 3-POINT BIOTITE-APATITE ISOCHRON	AGE APPEARS TOO LOW; PROBABLE LOSS OF RADIOGENIC STRONTIUM DURING WEATHERING
4423	2	1484.99		0.7026	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A-3	0.0000139*	649.1	28.2	3.92	66.59	2.122	N	152			BIOTITE 1	3-POINT BIOTITE-APATITE ISOCHRON	AGE APPEARS TOO LOW; PROBABLE LOSS OF RADIOGENIC STRONTIUM DURING WEATHERING
4424	1	1484.99		0.7026	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A-3	0.0000139*	734.6	17.62	4.42	120.6	3.26	N	152			BIOTITE 2	3-POINT BIOTITE-APATITE ISOCHRON	AGE APPEARS TOO LOW; PROBABLE LOSS OF RADIOGENIC STRONTIUM DURING WEATHERING
4424	2	1484.99		0.7026	apatite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A-3	0.0000139*	0.69	237.6		0.0084	0.7026	N	152				3-POINT MINERAL ISOCHRON	
4424	3				plagioclase		A-3	0.0000147*	10.26	119.21	0.04	0.2489	0.7057	N					NO AGE CALCULATED BUT ANALYTICAL DATA PLOTS ON 1517 M.Y. ISOCHRON	
4424	4	1552.8		0.7026	whole rock	Conventional Rb-Sr (measured initial 87Sr/86Sr)	A-3	0.0000147*	169.03	284.9	1.02	1.716	0.7384	N					"SR-87(RADIOGENIC)=1.148 AND 1.191 E-8 MOL/GM, NORMAL SR=3.260 AND 3.243 E-6 MOL/GM RB=1.9525 AND 2.0029 MOL/GM, SR-87/SR-86=0.7377 AND 0.7392, RB-87/SR-86=1.690 AND 1.743; THE LAST TWO ITEMS PLOT CLOSE TO THE 1517 M.Y. ISOCHRON"	AGE APPEARS TOO LOW; PROBABLE LOSS OF RADIOGENIC STRONTIUM DURING WEATHERING
4424	5	1625.26		0.7026	microcline		A-3	0.0000147*	299.8	455.7	1.89	1.903	0.7443	N			minimum age of intrusion	PHENOCRYST		
4425	1	1574.07		0.7026	microcline	Conventional Rb-Sr (measured initial 87Sr/86Sr)	A-3	0.0000139*	264.6	356.8	1.71	2.145	0.7508	N			minimum age of intrusion		2-POINT MICROCLINE-APATITE ISOCHRON AGE IS 1640 M.Y.	
4425	2	1605.4		0.7016	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A-3	0.0000139*	264.6	356.8	1.71	2.145	0.7508	N	153		age of intrusion		2-POINT MICROCLINE-APATITE ISOCHRON AGE	
4425	3	1697.73		0.7016	apatite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A-3	0.0000147*	0.69	237.6		0.0084	0.7016	N	153		age of intrusion		2-POINT MICROCLINE-APATITE ISOCHRON AGE	
4426	1	1624.97		0.704	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NOT GIVEN	0.0000139*	585.7	37.95	3.89	44.67	1.7513	N	154		minimum age of intrusion	MICROCLINE 1 OF PEGMATITE 1	14-POINT MINERAL ISOCHRON; A 1667 M.Y. AGE IS CALCULATED FOR THIS SAMPLE ALONE USING ABOVE ANALYTICAL DATA	
4426	2	1624.97		0.704	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NOT GIVEN	0.0000139*	571.6	19.5	3.79	84.86	2.6892	N	154		minimum age of intrusion	MICROCLINE 2 OF PEGMATITE 1	14-POINT MINERAL ISOCHRON; A 1663 M.Y. AGE IS CALCULATED FOR THIS SAMPLE ALONE USING ABOVE ANALYTICAL DATA	
4426	3	1718.43		0.704	albite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NOT GIVEN	0.0000147*	12.38	7.83	0.08	4.58	0.803	N	154		minimum age of intrusion	ALBITE 1 OF PEGMATITE 1; SINGLE LARGE CRYSTAL	14-POINT MINERAL ISOCHRON; A 1538 M.Y. AGE IS CALCULATED FOR THIS SAMPLE ALONE USING ABOVE ANALYTICAL DATA	
4426	4	1718.43		0.704	albite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NOT GIVEN	0.0000147*	19.37	32.8	1.33	1.71	0.7456	N	154		minimum age of intrusion	ALBITE 2 OF PEGMATITE 1; CLEAVELANDITE AGGREGATE	14-POINT MINERAL ISOCHRON; A 1731 M.Y. AGE IS CALCULATED FOR THIS SAMPLE ALONE USING ABOVE ANALYTICAL DATA	
4426	5	1718.43		0.704	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NOT GIVEN	0.0000147*	7536	0.35	49.95	62166	1454	N	154		minimum age of intrusion	MUSCOVITE 1 OF PEGMATITE 1; FROM A LARGE QUARTZ-ENCLOSED BOOK	14-POINT ISOCHRON; A 1663 M.Y. AGE IS CALCULATED FOR THIS SAMPLE ALONE USING ABOVE ANALYTICAL DATA	
4427	1	1624.97		0.704	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NOT GIVEN	0.0000139*	1295	0.63	8.56	5921	38.9	N	154		minimum age of intrusion	MUSCOVITE 2 OF PEGMATITE 1; FROM LARGE CLAY-FILLED POCKET	14-POINT MINERAL ISOCHRON; A 1659 M.Y. AGE IS CALCULATED FOR THIS SAMPLE ALONE USING ABOVE ANALYTICAL DATA	
4428	1	1624.97		0.704	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NOT GIVEN	0.0000139*	586.6	79.48	3.81	21.37	1.1937	N	154		minimum age of intrusion	MICROCLINE 1 OF PEGMATITE 2; FROM A SINGLE CRYSTAL ABOUT 30 CM ON EDGE	14-POINT MINERAL ISOCHRON; A 1630 M.Y. AGE IS CALCULATED FOR THIS SAMPLE ALONE USING ABOVE ANALYTICAL DATA	
4428	2	1624.97		0.704	albite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NOT GIVEN	0.0000139*	11.67	87.88	0.01	0.3843	0.7122	N	154		minimum age of intrusion	ALBITE 1 OF PEGMATITE 2; FROM A SINGLE CRYSTAL ABOUT 30 CM ON EDGE	14-POINT MINERAL ISOCHRON; A 1520 M.Y. AGE IS CALCULATED FOR THIS SAMPLE ALONE USING ABOVE ANALYTICAL DATA	
4429	1	1624.97		0.704	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A-4B	0.0000139*	558.5	59.47	3.69	27.09	1.3363	N	154		minimum age of intrusion	MICROCLINE 1	14-POINT MINERAL ISOCHRON; A 1647 M.Y. AGE IS CALCULATED FOR THIS SAMPLE ALONE USING ABOVE ANALYTICAL DATA	
4429	2	1624.97		0.704	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A-4B	0.0000139*	551.3	59.72	3.65	26.72	1.3287	N	154		minimum age of intrusion	MICROCLINE 2	14-POINT MINERAL ISOCHRON; A 1663 M.Y. AGE IS CALCULATED FOR THIS SAMPLE ALONE USING ABOVE ANALYTICAL DATA	
4429	3	1718.43		0.704	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A-4B	0.0000147*	555.9	54.78	3.58	29.38	1.3712	N	154		minimum age of intrusion	MICROCLINE 3	14-POINT MINERAL ISOCHRON; A 1616 M.Y. AGE IS CALCULATED FOR THIS SAMPLE ALONE USING ABOVE ANALYTICAL DATA	
4430	1	1559.39		0.706	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A-6	0.0000139*	542.6	10.16	3.44	154.5	4.165	N						AGE IS TOO LOW
4432	1	1624.97		0.704	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A-8A	0.0000139*	396.5	13.64	2.59	84.13	2.638	N	154		minimum age of intrusion		14-POINT MINERAL ISOCHRON; A 1635 M.Y. AGE IS CALCULATED FOR THIS SAMPLE ALONE USING ABOVE ANALYTICAL DATA	
4433	1	1624.97		0.704	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A-8C	0.0000139*	459.8	46.38	3.03	28.7	1.373	N	154		minimum age of intrusion		14-POINT MINERAL ISOCHRON; A 1654 M.Y. AGE IS CALCULATED FOR THIS SAMPLE ALONE USING ABOVE ANALYTICAL DATA (AVERAGE OF TWO ANALYSES)	
4434	1	1572.11		0.706	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A-12A	0.0000139*	328.9	210.4	2.11	4.523	0.8081	N			age of intrusion		A SR-87/SR-86 RATIO OF 0.7996 IS CALCULATED FOR THIS SAMPLE	
4435	1	1331.3		0.706	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A-10	0.0000139*	556	32.59	3.01	49.38	1.648	N			minimum age of metamorphic crystallization			
4436	1	1483.03		0.706	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A-21	0.0000139*	521.5	33.08	3.15	45.63	1.6773	N			age of intrusion			
4437	1	1297.04		0.706	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A-23	0.0000139*	622.6	2.75	3.28	656.5	12.908	N			minimum age of intrusion			
4438	1	1316.62		0.706	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A-27	0.0000139*	2694	0.45	14.41	17757	335.7	N						MINIMUM AGE OF RECRYSTALLIZATION
4438	2	4784.86		0.706	plagioclase	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A-27	0.0000139*	135.3	11.47	2.7	34.15	3.1073	N				PLAGIOCLASE 1		SPURIOUS AGE
4438	3				plagioclase		A-27	0.0000147*	128.2	11.29	2.69	32.87	3.1361	N				PLAGIOCLASE 2	"NO AGE CALCULATED BUT DATA INDICATES THAT AGE WOULD BE ABOUT 4800 M.Y., WHICH IS TOO OLD"	
4439	1	1514.36		0.706	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A-28	0.0000139*	498.3	92.88	3.07	15.52	1.0434	N			age of intrusion			
4440	1	1643.57		0.706	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A-31	0.0000139*	5471	2.42	36.61	6541	155.11	N			age of intrusion			
4441	1	1559.39		0.706	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A-32	0.0000139*	2167	16.44	13.75	381.6	9.251	N			minimum age of intrusion			
4442	1	1553.51		0.706	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A-35	0.0000139*	463.7	45.04	2.93	29.8	1.3708	N			minimum age of intrusion			
4443	1	1521.21		0.706	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A-37	0.0000139*	477.4	36.43	2.96	37.94	1.534	N			minimum age of intrusion			
4444	1	1037.63		0.73	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A-38	0.0000139*	432.5	196.2	2.29	6.355	0.8251	N	155				2-POINT MINERAL ISOCHRON	AGE APPEARS TOO LOW
4444	2	1340.11		0.706	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A-38	0.0000139*	432.5	196.2	2.29	6.355	0.8251	N			age not evaluated		RB AND SR VALUES ARE AVERAGES OF 3 ANALYSES	
4445	1	1037.63		0.73	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A-39	0.0000139*	558.3	96.21	2.55	16.8	0.9746	N	155				2-POINT MINERAL ISOCHRON	AGE APPEARS TOO LOW
4445	2	1104.2		0.706	microcline	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A-39	0.0000139*	558.3	96.21	2.55	16.8	0.9746	N			age not evaluated		RB AND SR VALUES ARE AVERAGES OF 2 ANALYSES	
4446	1	1058.19			microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A-40	0.0000139*	225.3	293	1.04	2.226	0.7422	N			age not evaluated		2-POINT MICROCLINE-PLAGIOCLASE ISOCHRON; INITIAL SR-87/SR-86 RATIO IS NOT GIVEN; THE 1061 M.Y. AGE LISTED IN TABLE 1 FOR THIS MINERAL IS IN ERROR	
4446	2	917.23			whole rock	Conventional Rb-Sr (measured initial 87Sr/86Sr)	A-40	0.0000139*	129.2	383.9	0.6	0.9744	0.722	N			age not evaluated		AGE CALCULATED BY A 2-POINT MICROCLINE-PLAGIOCLASE ISOCHRON; INITIAL SR-87/SR-86 RATIO IS NOT GIVEN IN THIS REFERENCE	
4446	3				plagioclase		A-40	0.0000147*	5.5	307	0.12	0.05183	0.7099	N					ANALYTICAL DATA USED IN CONSTRUCTING A 2-POINT MICROCLINE-PLAGIOCLASE ISOCHRON AND A 2-POINT BIOTITE-PLAGIOCLASE ISOCHRON	
4446	4	519.67			biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A-40	0.0000147*	709.9	17.17	1.42	119.6	1.549	N			age not evaluated		2-POINT BIOTITE-PLAGIOCLASE ISOCHRON; INITIAL SR-87/SR-86 RATIO IS NOT GIVEN; ANALYTICAL VALUES FOR RB AND SR ARE AVERAGES OF TWO ANALYSES	
4447	1	813.47		0.712	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A-46	0.0000139*	684	16.5	2.26	119.9	2.105	N			age not evaluated		2-POINT BIOTITE-PLAGIOCLASE ISOCHRON (INITIAL SR-87/SR-86 RATIO IS NOT STATED; ABOVE VALUE IS ESTIMATED)	
4447	2				plagioclase		A-46	0.0000139*	15.78	91.04	0.1	0.502	0.7175	N					ANALYTICAL DATA USED IN CONSTRUCTING A 2-POINT BIOTITE-PLAGIOCALSE ISOCHRON AND A 2-POINT MICROCLINE-PLAGIOCLASE ISOCHRON	
4447	3	974.12		0.711	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A-46	0.0000147*	187.4	137.7	0.78	3.938	0.7628	N			minimum age of intrusion		2-POINT MICROCLINE-PLAGIOCLASE ISOCHRON	
4448	1	68.52		0.706	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	A-45	0.0000139*	484.8	13.84	0.13	101.4	0.8041	N			age of intrusion		REFERENCE ALSO REPORTS AGE AS 73 M.Y.	
4461	1	1240	60	0.704	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	13 USGS(W)-123	1.42E-05		46.5	1.9			T					RB-87=107 PPM	"THIS IS A REDUCED AGE; INITIAL CRYSTALLIZATION OF THE BRADY BUTTE GRANODIORITE OCCURRED 1770 M.Y. AGO (ANDERSON AND OTHERS,  1971)"
4464	1	1610	90	0.704	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	16 USGS(W)-CAA-5	1.42E-05		136	1.25			T			minimum age of intrusion		RB-87=54.1 PPM	
4466	1	1310	50	0.704	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	18 USGS(W)-CAA-8	1.42E-05		12	1.61			T			minimum age of intrusion		RB-87=85.5 PPM	
4469	1	1410	50		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	21 USGS(D)-74D62	1.42E-05	253	126	1.45			N			age of intrusion		RADIOGENIC SR-87/RB-87 = 0.02026	"DREWES (1977, MAP I-997) PUBLISHED AN AGE OF 1440 M.Y. FOR THIS SAMPLE; DECAY CONSTANT SINCE REVISED."
4501	1	1080	150	0.703	K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	68 USGS(W)-268	1.42E-05		95.4	0.58			N			minimum age of intrusion		RB-87 = 37.5 PPM	
4502	1	1160	130	0.703	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	69 USGS(W)-HB-V-1	1.42E-05		53.4	0.44			N			age of metamorphic crystallization		RB-87 = 26.5 PPM	
4513	1	288.78			whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	73D52	0.0000139*											NO ANALYTICAL DATA GIVEN	"AGE IS PROBABLY A HYBRID AGE AS THE ROCK PROBABLY FORMED 1400-1500 M.Y. AGO; A VERY STRONG THERMAL EVENT OCCURRED ABOUT 25 M.Y. AGO ACCORDING TO K-AR AND FISSION TRACK AGES (MARVIN AND COLE, 1978, NO. 20, P. 6)."
4628	1	277.03	14		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	B3172	0.0000139*									initial age disturbed by later metamorphism		RAD 87SR/87RB = 0.00394	
4628	2	266.26	30		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M3172	0.0000139*									initial age disturbed by later metamorphism		RAD 87SR/87RB = 0.00383	
4629	1	286.82	15		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	B3173	0.0000139*									initial age disturbed by later metamorphism		RAD 87SR/87RB = 0.0045	
4629	2	306.4	47		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M3173	0.0000139*									initial age disturbed by later metamorphism		RAD 87SR/87RB = 0.00435	
4630	1	280.94	14		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	B3174	0.0000139*									initial age disturbed by later metamorphism		RAD 87SR/87RB = 0.00399	
4630	2	281.92	20		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M3174	0.0000139*									initial age disturbed by later metamorphism		RAD 87SR/87RB = 0.00402	
4631	1	248.64	13		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	B3177	0.0000139*									initial age disturbed by later metamorphism		RAD 87SR/87RB = 0.00353	
4631	2	239.83	15		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M3177	0.0000139*									initial age disturbed by later metamorphism		RAD 87SR/87RB = 0.00341	
4632	1	297.59	24		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	B1985	0.0000139*									age of intrusion		RAD 87SR/87RB = 0.00432	
4632	2	311.29	25		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M1985	0.0000139*									age of intrusion		RAD 87SR/87RB = 0.00443	
4633	1	234.94	14		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	B3376A	0.0000139*									initial age disturbed by later metamorphism		RAD 87SR/87RB = 0.00334	
4633	2	217.32	11		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M3376	0.0000139*									initial age disturbed by later metamorphism		RAD 87SR/87RB = 0.00311	
4636	1	510.99		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8544	0.0000139*	170.9	46.63		10.499	0.7814	T			initial age disturbed by later metamorphism			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4637	1	592.23		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8545	0.0000139*	175.8	61.26		8.219	0.7744	T			age of intrusion			
4637	2	595.17	17	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8545	0.0000139*	175.8	61.26		8.219	0.7744	T	156		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON (ARTICLE DID NOT DESIGNATE THE 8 POINTS --COMPILER)	
4638	1	550.14		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8546	0.0000139*	188.7	48.85		11.079	0.7919	T			initial age disturbed by later metamorphism			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4639	1	455.19		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8548	0.0000139*	108.3	90.49		3.41	0.7271	T			initial age disturbed by later metamorphism			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4639	2	439.53	16	0.7048	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8548	0.0000139*	108.3	90.49		3.41	0.7271	T	157				6-POINT WHOLE-ROCK ISOCHRON (ARTICLE DID NOT DESIGNATE THE 6 POINTS --COMPILER)	APPROXIMATE AGE OF REGIONAL ALKALIC MAGMATISM WHICH AFFECTED THE DEDHAM GRANODIORITE
4640	1	529.58		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8549	0.0000139*	174.2	66.86		7.452	0.7613	T			initial age disturbed by later metamorphism			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4641	1	568.74		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8551	0.0000139*	189.4	44.36		12.262	0.8044	T			initial age disturbed by later metamorphism			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4642	1	534.48		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8552	0.0000139*	140	145.5		2.742	0.7259	T			initial age disturbed by later metamorphism			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4643	1	464.98		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8553	0.0000139*	141.8	96.12		4.208	0.7329	T			initial age disturbed by later metamorphism			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4643	2	439.53	16	0.7048	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8553	0.0000139*	141.8	96.12		4.208	0.7329	T	157				6-POINT WHOLE-ROCK ISOCHRON (ARTICLE DID NOT DESIGNATE THE 6 POINTS --COMPILER)	APPROXIMATE AGE OF REGIONAL ALKALIC MAGMATISM WHICH AFFECTED THE DEDHAM GRANODIORITE
4644	1	643.14		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8554	0.0000139*	145.8	167.2		2.486	0.7278	T			maximum age of intrusion			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4644	2	595.17		0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8554	0.0000139*	145.8	167.2		2.486	0.7278	T	156		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON (ARTICLE DID NOT DESIGNATE THE 8 POINTS --COMPILER)	
4645	1	579.51		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8555	0.0000139*	216	38.3		16.255	0.8393	T			minimum age of intrusion			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4646	1	563.85		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8556	0.0000139*	205.4	47.11		12.527	0.8057	T			initial age disturbed by later metamorphism			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4647	1	445.4		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8557	0.0000139*	153.2	85.54		5.11	0.7374	T			initial age disturbed by later metamorphism			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4647	2	439.53	16	0.7048	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8557	0.0000139*	153.2	85.54		5.11	0.7374	T	157				6-POINT WHOLE-ROCK ISOCHRON (ARTICLE DID NOT DESIGNATE THE 6 POINTS --COMPILER)	APPROXIMATE AGE OF REGIONAL ALKALIC MAGMATISM WHICH AFFECTED THE DEDHAM GRANODIORITE
4648	1	522.73		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8558	0.0000139*	199.5	46.55		12.3	0.7967	T			initial age disturbed by later metamorphism			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4649	1	543.29		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8560	0.0000139*	154.9	153.4		2.877	0.7273	T			initial age disturbed by later metamorphism			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4650	1	506.09		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8561	0.0000139*	174.8	47.38		10.572	0.7813	T			initial age disturbed by later metamorphism			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4651	1	612.79		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8562	0.0000139*	159.9	102.6		4.45	0.7439	T			age of intrusion			
4651	2	595.17	17	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8562	0.0000139*	159.9	102.6		4.45	0.7439	T	156		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON (ARTICLE DID NOT DESIGNATE THE 8 POINTS --COMPILER)	
4651	3	625.26	38	0.7069	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8562	0.0000147*	159.9	102.6		4.45	0.7439	T	158		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON	
4652	1	591.26		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8563	0.0000139*	131.6	169.9		2.204	0.7236	T			age of intrusion			
4652	2	591.26	38	0.7069	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8563	0.0000139*	131.6	169.9		2.204	0.7236	T	158		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON	
4653	1	430.72		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8564	0.0000139*	99.8	362.8		0.783	0.7098	T			initial age disturbed by later metamorphism			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4653	2	439.53	16	0.7048	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8564	0.0000139*	99.8	362.8		0.783	0.7098	T	157				6-POINT WHOLE-ROCK ISOCHRON (ARTICLE DID NOT DESIGNATE THE 6 POINTS --COMPILER)	APPROXIMATE AGE OF REGIONAL ALKALIC MAGMATISM WHICH AFFECTED THE DEDHAM GRANODIORITE
4654	1	693.06		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8565	0.0000139*	118.5	273.9		1.232	0.7172	T			age not evaluated			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4654	2	595.17	17	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8565	0.0000139*	118.5	273.9		1.232	0.7172	T	156		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON (ARTICLE DID NOT DESIGNATE THE 8 POINTS --COMPILER)	
4654	3	625.26	38	0.7069	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8565	0.0000147*	118.5	273.9		1.232	0.7172	T	158		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON	
4655	1	588.32		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8566	0.0000139*	153	57.64		7.598	0.7687	T			age of intrusion			
4656	1	538.4		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8567	0.0000139*	167.8	57.89		8.294	0.7686	T			initial age disturbed by later metamorphism			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4657	1	600.07		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8569	0.0000139*	173.1	66.96		7.398	0.7683	T			"age of intrusion, initial age disturbed by later metamorphism"			
4657	2	595.17	17	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8569	0.0000139*	173.1	66.96		7.398	0.7683	T	156		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON (ARTICLE DID NOT DESIGNATE THE 8 POINTS --COMPILER)	
4657	3	625.26	38	0.7069	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8569	0.0000147*	173.1	66.96		7.398	0.7683	T	158		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON	
4658	1	613.77		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8570	0.0000139*	165	57.35		8.241	0.7772	T			age of intrusion			
4658	2	595.17	17	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8570	0.0000139*	165	57.35		8.241	0.7772	T	156		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON (ARTICLE DID NOT DESIGNATE THE 8 POINTS --COMPILER)	
4658	3	625.26	38	0.7069	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8570	0.0000147*	165	57.35		8.241	0.7772	T	158		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON	
4659	1	640.2		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8572	0.0000139*	138	100.6		3.917	0.7408	T			maximum age of intrusion			
4659	2	595.17	17	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8572	0.0000139*	138	100.6		3.917	0.7408	T	156		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON (ARTICLE DID NOT DESIGNATE THE 8 POINTS --COMPILER)	
4659	3	625.26	38	0.7069	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8572	0.0000147*	138	100.6		3.917	0.7408	T	158		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON	
4660	1	398.41		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8599	0.0000139*	91.43	202.4		1.286	0.7123	T			initial age disturbed by later metamorphism			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4661	1	457.15		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8600	0.0000139*	78.07	344.3		0.645	0.7092	T			initial age disturbed by later metamorphism			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4662	1	329.89		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8601	0.0000139*	57.79	593.4		0.277	0.7063	T			initial age disturbed by later metamorphism			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4662	2	439.53	16	0.7048	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8601	0.0000139*	57.79	593.4		0.277	0.7063	T	157				6-POINT WHOLE-ROCK ISOCHRON (ARTICLE DID NOT DESIGNATE THE 6 POINTS --COMPILER)	APPROXIMATE AGE OF REGIONAL ALKALIC MAGMATISM WHICH AFFECTED THE DEDHAM GRANODIORITE
4663	1	528.61		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8605	0.0000139*	98.63	289.6		0.969	0.7123	T			initial age disturbed by later metamorphism			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4664	1	432.67		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8606	0.0000139*	141.5	58.6		6.896	0.7475	T			initial age disturbed by later metamorphism			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4664	2	439.53	16	0.7048	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8606	0.0000139*	141.5	58.6		6.896	0.7475	T	157				6-POINT WHOLE-ROCK ISOCHRON (ARTICLE DID NOT DESIGNATE THE 6 POINTS --COMPILER)	APPROXIMATE AGE OF REGIONAL ALKALIC MAGMATISM WHICH AFFECTED THE DEDHAM GRANODIORITE
4665	1	659.78		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8607	0.0000139*	81.46	237.1		0.978	0.7142	T			age not evaluated			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4665	2	595.17	17	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8607	0.0000139*	81.46	237.1		0.978	0.7142	T	156		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON (ARTICLE DID NOT DESIGNATE THE 8 POINTS --COMPILER)	
4666	1	778.23		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8608	0.0000139*	63.62	295.8		0.612	0.7118	T			age not evaluated			PRIMARY CRYSTALLIZATION AGE BELIEVED TO BE AROUND 600 M.Y.
4693	1				biotite		556B	1.47E-05	230	1200				T				MESH SIZE -10+20	RB AND SR CONCENTRATIONS BY X-RAY FLUORESCENCE; UNFAVORABLE RB/SR RATIO FOR AGE DETERMINATION	
4694	1				biotite		557B	1.47E-05	190	760				T				MESH SIZE -40+80	RB AND SR CONCENTRATIONS BY X-RAY FLUORESCENCE; UNFAVORABLE RB/SR RATIO FOR AGE DETERMINATION	
4695	1				biotite		703B	1.47E-05	170	580				T				MESH SIZE -80+120	RB AND SR CONCENTRATIONS BY X-RAY FLUORESCENCE; UNFAVORABLE RB/SR RATIO FOR AGE DETERMINATION	
4696	1	89.03	3	0.703	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	249B	0.0000147*	468	15.3	0.17		0.8157	T			age of intrusion			
4697	1	89.03	3	0.703	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	250B	0.0000147*	476	14	0.17		0.8276	T			age of intrusion	MESH SIZE -20+40		
4698	1				biotite		558B	1.47E-05	330	480				T				MESH SIZE -10+20	RB AND SR CONCENTRATIONS BY X-RAY FLUORESCENCE; UNFAVORABLE RB/SR RATIO FOR AGE DETERMINATION	
4699	1	102.48	8	0.703	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	562B	0.0000147*	386	48.8	0.16		0.7365	T			age of intrusion	MESH SIZE -40+80		
4700	1	413.04	23	0.703	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	192	0.0000147*	334	109	0.56		0.7552	T			age of intrusion	MESH SIZE -10+20		
4701	1	409.94	28	0.703	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	194B	0.0000147*	375	156	0.62		0.7434	T			age of intrusion	MESH SIZE -10+20		
4702	1				biotite		189B	1.47E-05	290	350				T				MESH SIZE -10+20	RB AND SR CONCENTRATIONS BY X-RAY FLUORESCENCE; UNFAVORABLE RB/SR RATIO FOR AGE DETERMINATION	
4703	1	269.15	23	0.7019	biotite	Conventional Rb-Sr (measured initial 87Sr/86Sr)	238B	0.0000147*	448	164	0.48		0.732	T			age of intrusion	MESH SIZE -40+80	INITIAL 87SR/86SR RATIO DETERMINED FROM COEXISTING APATITE	
4704	1	288.82	27	0.703	biotite	Conventional Rb-Sr (measured initial 87Sr/86Sr)	197B	0.0000147*	426	193	0.5		0.7293	T			age of intrusion	MESH SIZE -40+80	INITIAL 87SR/86SR RATIO DETERMINED FROM COEXISTING APATITE	
4705	1	266.05	22	0.703	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	555B(B)	0.0000147*	443	156	0.47		0.7342	T			age of intrusion	MESH SIZE -20+40		
4706	1	118.01	12	0.7031	biotite	Conventional Rb-Sr (measured initial 87Sr/86Sr)	563B	0.0000147*	495	97.5	0.23		0.7277	T			age not evaluated	MESH SIZE -40+80	INITIAL 87SR/86SR RATIO DETERMINED FROM COEXISTING APATITE	
4707	1	451.35	41	0.703	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	260B	0.0000147*	289	201	0.53		0.7298	T			age of intrusion	MESH SIZE -20+40		
4708	1	438.92	20	0.703	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	261B	0.0000147*	801	194	1.42		0.7783	T			age of intrusion	MESH SIZE -40+80		
4710	1				biotite		259B	1.47E-05	450	640				T				MESH SIZE -10+20	RB AND SR CONCENTRATIONS BY X-RAY FLUORESCENCE; UNFAVORABLE RB/SR RATIO FOR AGE DETERMINATION	
4712	1	140.79	8	0.703	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	190B(B)	0.0000147*	551	65.6	0.31		0.7516	T			age of intrusion	MESH SIZE -10+20		
4715	1	122.15	15	0.703	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	193B(A)	0.0000147*	392	105	0.19		0.7219	T			"minimum age of intrusion, age meaning uncertain (geologic factors)"	MESH SIZE -10+20		
4716	1	151.14	8	0.703	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	193B(B)	0.0000147*	464	55.6	0.28		0.7548	T			age of intrusion	MESH SIZE -10+20		
4718	1	198.4	3.2	0.7033	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-6	1.42E-05	206	26.4		22.58	0.76644	T	159		age of intrusion		14-POINT WHOLE-ROCK ISOCHRON	ARMSTRONG AND STUMP (1971) REPORT BIOTITE K-AR AGES OF 199 AND 197 M.Y. FOR THIS SYENITE
4718	2	198.7	2.8	0.70325	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-6	1.42E-05	206	26.4		22.58	0.76644	T	160		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	
4719	1	198.4	3.2	0.7033	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-8	1.42E-05	156.6	15.03		30.25	0.78896	T	159		age of intrusion		14-POINT WHOLE-ROCK ISOCHRON	ARMSTRONG AND STUMP (1971) REPORT BIOTITE K-AR AGES OF 199 AND 197 M.Y. FOR THIS SYENITE
4719	2	198.7	2.8	0.70325	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-8	1.42E-05	156.6	15.03		30.25	0.78896	T	160		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	
4720	1	198.4	3.2	0.7033	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-11	1.42E-05	124.8	121.8		3.004	0.7119	T	159		age of intrusion		14-POINT WHOLE-ROCK ISOCHRON	ARMSTRONG AND STUMP (1971) REPORT BIOTITE K-AR AGES OF 199 AND 197 M.Y. FOR THIS SYENITE
4720	2	198.7	2.8	0.70325	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-11	1.42E-05	124.8	121.8		3.004	0.7119	T	160		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	
4721	1	198.4	3.2	0.7033	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-18	1.42E-05	167.3	106.7		4.54	0.71584	T	159		age of intrusion		AVERAGE OF 4 COMPLETE ANALYSES; 14-POINT WHOLE-ROCK ISOCHRON	ARMSTRONG AND STUMP (1971) REPORT BIOTITE K-AR AGES OF 199 AND 197 M.Y. FOR THIS SYENITE
4721	2	198.7	2.8	0.70325	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-18	1.42E-05	167.3	106.7		4.54	0.71584	T	160		age of intrusion		AVERAGE OF 4 ANALYSES; 7-POINT WHOLE-ROCK ISOCHRON	
4722	1	198.4	3.2	0.7033	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-19	1.42E-05	104.8	207.8		1.459	0.70724	T	159		age of intrusion		14-POINT WHOLE-ROCK ISOCHRON	ARMSTRONG AND STUMP (1971) REPORT BIOTITE K-AR AGES OF 199 AND 197 M.Y. FOR THIS SYENITE
4722	2	198.7	2.8	0.70325	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-19	1.42E-05	104.8	207.8		1.459	0.70724	T	160		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	
4723	1	198.4	3.2	0.7033	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-20	1.42E-05	80.32	319.1		0.7286	0.70539	T	159		age of intrusion		14-POINT WHOLE-ROCK ISOCHRON	ARMSTRONG AND STUMP (1971) REPORT BIOTITE K-AR AGES OF 199 AND 197 M.Y. FOR THIS SYENITE
4723	2	198.7	2.8	0.70325	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-20	1.42E-05	80.32	319.1		0.7286	0.70539	T	160		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	
4724	1	198.4	3.2	0.7033	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-75-35	1.42E-05	139.6	20.75		19.47	0.75874	T	159		age of intrusion		14-POINT WHOLE-ROCK ISOCHRON	ARMSTRONG AND STUMP (1971) REPORT BIOTITE K-AR AGES OF 199 AND 197 M.Y. FOR THIS SYENITE
4724	2	198.7	2.8	0.70325	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-75-35	1.42E-05	139.6	20.75		19.47	0.75874	T	160		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	
4725	1				whole rock		NH-74-7	1.42E-05	177.2	107.6		4.765	0.7198	T					NO AGE CALCULATED	
4726	1	197.3	2	0.70463	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NH-74-9	1.42E-05	212.9	477.9		1.289	0.70832	T			age of intrusion		4-POINT MINERAL--WHOLE-ROCK ISOCHRON	
4726	2	197.3	2	0.70463	albite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NH-74-9	1.42E-05	34.04	662.6		0.149	0.705	T			age of intrusion		4-POINT MINERAL--WHOLE-ROCK ISOCHRON	
4726	3				sodalite		NH-74-9	1.42E-05	16.12	188.2		0.2477	0.70646	T					NO AGE CALCULATED; ANALYTICAL DATA DOES NOT PLOT ON 197 M.Y. ISOCHRON	
4726	4	197.3	2	0.70463	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NH-74-9	1.42E-05	1353.4	6.72		583.3	2.3376	T			age of intrusion		4-POINT MINERAL--WHOLE-ROCK ISOCHRON	
4726	5	197.3	2	0.70463	apatite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NH-74-9	1.42E-05	1.74	480		0.0105	0.70464	T			age of intrusion		4-POINT MINERAL--WHOLE-ROCK ISOCHRON	
4727	1	198.7	2.2	0.70418	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NH-74-12	1.42E-05	148	36.1		11.86	0.7375	T	162		age of intrusion		7-POINT MINERAL--WHOLE-ROCK ISOCHRON	
4727	2	198.7	2.2	0.70418	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NH-74-12	1.42E-05	148.2	41.06		10.44	0.73333	T	162		age of intrusion		7-POINT MINERAL--WHOLE-ROCK ISOCHRON	
4727	3	198.7	2.2	0.70418	nepheline group	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NH-74-12	1.42E-05	125.4	13.46		26.94	0.78004	T	162		age of intrusion		7-POINT MINERAL--WHOLE-ROCK ISOCHRON
4727	4				sodalite		NH-74-12	1.42E-05	4.57	17.7		0.748	0.7098	T					AVERAGE OF 2 ANALYSES; ANALYTICAL DATA DOES NOT PLOT ON 199 M.Y. ISOCHRON
4727	5	198.7	2.2	0.70418	sodalite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NH-74-12	1.42E-05	36.23	18.05		5.81	0.72068	T	162		age of intrusion		7-POINT MINERAL--WHOLE-ROCK ISOCHRON
4728	1	198.7	2.2	0.70418	sodalite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NH-74-12	1.42E-05	38.79	18.88		5.946	0.72106	T	162		age of intrusion		7-POINT MINERAL--WHOLE-ROCK ISOCHRON
4728	2	198.7	2.2	0.70418	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NH-74-12	1.42E-05	655.5	11.95		158.7	1.15606	T	162		age of intrusion		AVERAGE OF 2 ANALYSES; 7-POINT MINERAL--WHOLE-ROCK ISOCHRON
4728	3	198.7	2.2	0.70418	amphiboles	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NH-74-12	1.42E-05	46.6	11.45		11.78	0.73719	T	162		age of intrusion		7-POINT MINERAL--WHOLE-ROCK ISOCHRON
4729	1				whole rock		NH-74-13	1.42E-05	117.6	392.2		0.8679	0.70594	T					NO AGE CALCULATED
4730	1				whole rock		NH-75-10	1.42E-05	105.5	124.6		2.451	0.71063	T					NO AGE CALCULATED
4731	1				whole rock		NH-75-11	1.42E-05	126.5	100.3		3.648	0.71351	T					NO AGE CALCULATED
4732	1				whole rock		NH-75-30	1.42E-05	187.8	13		41.81	0.82335	T					NO AGE CALCULATED
4733	1				whole rock		NH-75-36	1.42E-05	152.4	19.37		22.77	0.76938	T					NO AGE CALCULATED
4734	1	198.4	3.2	0.7033	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-14	1.42E-05	162.2	119.9		3.916	0.71426	T	159		age of intrusion		14-POINT WHOLE-ROCK ISOCHRON
4734	2	195.4	11	0.70354	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-14	1.42E-05	162.2	119.9		3.916	0.71426	T	161		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON
4735	1	198.4	3.2	0.7033	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-15	1.42E-05	241.9	188.3		3.718	0.71419	T	159		age of intrusion		RB AND SR VALUES AVERAGE OF 2 ANALYSES; 14-POINT WHOLE-ROCK ISOCHRON
4735	2	195.4	11	0.70354	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-15	1.42E-05	241.9	188.3		3.718	0.71419	T	161		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON; RB AND SR VALUES AVERAGE OF 2 ANALYSES
4736	1	198.4	3.2	0.7033	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-16	1.42E-05	189.9	259.2		2.12	0.70935	T	159		age of intrusion		14-POINT WHOLE-ROCK ISOCHRON
4736	2	195.4	11	0.70354	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-16	1.42E-05	189.9	259.2		2.12	0.70935	T	161		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON
4737	1	198.4	3.2	0.7033	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-17	1.42E-05	154.5	242.3		1.845	0.7085	T	159		age of intrusion		14-POINT WHOLE-ROCK ISOCHRON
4737	2	195.4	11	0.70354	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-74-17	1.42E-05	154.5	242.3		1.845	0.7085	T	161		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON
4738	1	198.4	3.2	0.7033	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-75-12	1.42E-05	142.5	360.8		1.143	0.7068	T	159		age of intrusion		14-POINT WHOLE-ROCK ISOCHRON
4738	2	195.4	11	0.70354	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-75-12	1.42E-05	142.5	360.8		1.143	0.7068	T	161		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON
4739	1	198.4	3.2	0.7033	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-75-13	1.42E-05	149.2	318.9		1.355	0.70703	T	159		age of intrusion		14-POINT WHOLE-ROCK ISOCHRON
4740	1	198.4	3.2	0.7033	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NH-75-18	1.42E-05	212.5	238.4		2.579	0.7103	T	159		age of intrusion		14-POINT WHOLE-ROCK ISOCHRON
4741	1				whole rock		NH-75-23	1.42E-05	227.2	156.2		4.213	0.71731	T					NO AGE CALCULATED
4742	1				whole rock		NH-75-24	1.42E-05	229.4	114.2		5.814	0.72169	T					NO AGE CALCULATED
4743	1	187.5	1.1	0.70573	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NH-75-25	1.42E-05	221.3	190.6		3.361	0.7147	T	163		age of intrusion		6-POINT MINERAL--WHOLE-ROCK ISOCHRON
4743	2	187.5	1.1	0.70573	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NH-75-25	1.42E-05	264.6	226.4		3.381	0.7148	T	163		age of intrusion		6-POINT MINERAL--WHOLE-ROCK ISOCHRON
4743	3	187.5	1.1	0.70573	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NH-75-25	1.42E-05	100.1	707.1		0.4096	0.70645	T	163		age of intrusion		6-POINT MINERAL--WHOLE-ROCK ISOCHRON
4743	4	187.5	1.1	0.70573	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NH-75-25	1.42E-05	103.1	786.7		0.3792	0.70676	T	163		age of intrusion		6-POINT MINERAL--WHOLE-ROCK ISOCHRON
4743	5	187.5	1.1	0.70573	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NH-75-25	1.42E-05	828.9	11.09		216.3	1.28288	T	163		age of intrusion		6-POINT MINERAL--WHOLE-ROCK ISOCHRON
4744	1	187.5	1.1	0.70573	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NH-75-25	1.42E-05	841.75	10.59		230.4	1.29525	T	163		age of intrusion		RB AND SR VALUES ARE AVERAGE OF 2 ANALYSES; 6-POINT MINERAL--WHOLE-ROCK ISOCHRON
4745	1				whole rock		NH-75-26		202.8	161.9		3.625	0.71558	T					NO AGE CALCULATED
4746	1				whole rock		NH-75-27		222.5	180.8		3.56	0.71655	T					NO AGE CALCULATED
4747	1				whole rock		NH-75-27H		216.8	167.6		3.744	0.71716	T					NO AGE CALCULATED
4748	1				whole rock		NH-75-27I		175.4	358.1		1.417	0.70858	T					NO AGE CALCULATED
4749	1				whole rock		NH-76-25		248.9	118.6		6.073	0.72307	T					NO AGE CALCULATED
4750	1				whole rock		NH-76-30		215.3	160.4		3.886	0.71729	T					NO AGE CALCULATED
4751	1	403.31	5	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-1	0.0000139*	150	99.3		4.38	0.7324	T	164		age of volcanism		9-POINT WHOLE-ROCK ISOCHRON
4752	1	403.31	5	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-2A	0.0000139*	63.5	340		0.54	0.7111	T	164		age of volcanism		9-POINT WHOLE-ROCK ISOCHRON
4753	1	403.31	5	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-2B	0.0000139*	132	3.99		100.3	1.2819	T	164		age of volcanism		RB AND SR VALUES ARE AVERAGES; 9-POINT WHOLE-ROCK ISOCHRON
4754	1	403.31	5	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-2C	0.0000139*	123	9.86		37	0.9113	T	164		age of volcanism		RB AND SR CONTENT AVERAGE OF 2 ANALYSES; 9-POINT WHOLE-ROCK ISOCHRON
4755	1	403.31	5	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-3A	0.0000139*	138	8.75		46.8	0.9743	T	164		age of volcanism		RB AND SR CONTENT AVERAGE OF 2 ANALYSES; 9-POINT WHOLE-ROCK ISHOCRON
4756	1	403.31	5	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-3B	0.0000139*	168	10.95		45.5	0.9724	T	164		age of volcanism		9-POINT WHOLE-ROCK ISOCHRON
4757	1	403.31	5	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-5	0.0000139*	257	81.5		9.17	0.7603	T	164		age of volcanism		9-POINT WHOLE-ROCK ISOCHRON
4758	1	403.31	5	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-6A	0.0000139*	469	323		4.21	0.731	T	164		age of volcanism		9-POINT WHOLE-ROCK ISOCHRON
4759	1	403.31	5	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-7A	0.0000139*	99.4	18.1		16	0.8006	T	164		age of volcanism		9-POINT WHOLE-ROCK ISOCHRON
4760	1	404.29	10	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-9	0.0000139*	56.1	362		0.45	0.7069	T	165		age of volcanism		9-POINT WHOLE-ROCK ISOCHRON
4761	1	404.29	10	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-10	0.0000139*	57.7	323		0.52	0.7089	T	165		age of volcanism		9-POINT WHOLE-ROCK ISOCHRON
4762	1	404.29	10	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-12	0.0000139*	131	6.11		64.1	1.0615	T	165		age of volcanism		"SR = 5.94, 6.28 PPM; 9-POINT WHOLE-ROCK ISOCHRON"
4763	1	404.29	10	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-14A	0.0000139*	145	6.57		66.3	1.0706	T	165		age of volcanism		"SR = 6.43, 6.71 PPM; 9-POINT WHOLE-ROCK ISOCHRON"
4764	1	404.29	10	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-14B	0.0000139*	154	5.75		80.9	1.172	T	165		age of volcanism		"SR = 5.66, 5.84 PPM; 9-POINT WHOLE-ROCK ISOCHRON"
4765	1	404.29	10	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-15	0.0000139*	149	7.73		57.6	1.0438	T	165		age of volcanism		"SR = 7.68, 7.78 PPM; 9-POINT WHOLE-ROCK ISOCHRON"
4766	1	404.29	10	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-16	0.0000139*	137	6.1		67.7	1.1074	T	165		age of volcanism		"SR = 6.11, 6.09 PPM; 9-POINT WHOLE-ROCK ISOCHRON"
4767	1	404.29	10	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-17A	0.0000139*	123	11.39		32	0.8953	T	165		age of volcanism		"SR = 10.81, 11.97 PPM; 9-POINT WHOLE-ROCK ISOCHRON"
4768	1	404.29	10	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-17B	0.0000139*	117	11.36		30.3	0.8829	T	165		age of volcanism		"SR = 11.34, 11.38 PPM; 9-POINT WHOLE-ROCK ISOCHRON"
4769	1	391.56			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R6285	0.0000139*	242	26.7		26.6	0.8517	T	166		age of intrusion		87RB/86SR DETERMINED BY X-RAY FLUORESCENCE (25.4); 11-POINT WHOLE-ROCK ISOCHRON ENVELOPE
4770	1	391.56			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R6287	0.0000139*	227	38.4		17.3	0.8035	T	166		age of intrusion		87RB/86SR DETERMINED BY X-RAY FLUORESCENCE (17.2); 11-POINT WHOLE-ROCK ISOCHRON ENVELOPE
4771	1	391.56			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R6292	0.0000139*	235	38.7		17.7	0.8125	T	166		age of intrusion		87RB/86SR DETERMINED BY X-RAY FLUORESCENCE (17.7); 11-POINT WHOLE-ROCK ISOCHRON ENVELOPE
4772	1	391.56			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R6293	0.0000139*	114	147		2.25	0.7188	T	166		age of intrusion		87RB/86SR DETERMINED BY X-RAY FLUORESCENCE (2.31); 11-POINT WHOLE-ROCK ISOCHRON ENVELOPE
4773	1	391.56			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R6294	0.0000139*	117	158		2.14	0.7224	T	166		age of intrusion		87RB/86SR DETERMINED BY X-RAY FLUORESCENCE (2.19); 11-POINT WHOLE-ROCK ISOCHRON ENVELOPE
4774	1	391.56			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R6286	0.0000139*	235	41		16.8	0.8085	T	166		age of intrusion		87RB/86SR DETERMINED BY X-RAY FLUORESCENCE (17.9); 11-POINT WHOLE-ROCK ISOCHRON ENVELOPE
4775	1	384.71	6	0.7121	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	R7339	0.0000139*	264	38.9		20.1	0.817	T			age of intrusion		87RB/86SR DETERMINED BY X-RAY FLUORESCENCE (18.9); 4-POINT MINERAL--WHOLE-ROCK ISOCHRON
4775	2	384.71	6	0.7121	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	B7339	0.0000139*				193.4	1.76				age of intrusion		87RB/86SR DETERMINED BY X-RAY FLUORESCENCE; 4-POINT MINERAL--WHOLE-ROCK ISOCHRON
4775	3	384.71	6	0.7121	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	F7339	0.0000139*	490	47.1		30.6	0.879	T			age of intrusion		87RB/86SR DETERMINED BY X-RAY FLUORESCENCE (31.1); 4-POINT MINERAL--WHOLE-ROCK ISOCHRON
4775	4	384.71	6	0.7121	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	P7339	0.0000139*	33.9	29.1		3.38	0.7305	T			age of intrusion		87RB/86SR DETERMINED BY X-RAY FLUORESCENCE (3.45); 4-POINT MINERAL--WHOLE-ROCK ISOCHRON
4776	1	391.56			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R6296	0.0000139*	109	148		2.14	0.7207	T	166		age of intrusion		87RB/86SR DETERMINED BY X-RAY FLUORESCENCE (2.28); 11-POINT WHOLE-ROCK ISOCHRON ENVELOPE
4777	1	391.56			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R6297	0.0000139*				0.527	0.7079	T	166		age of intrusion		87RB/86SR DETERMINED BY X-RAY FLUORESCENCE; 11-POINT WHOLE-ROCK ISOCHRON ENVELOPE
4778	1	391.56			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R6301	0.0000139*				2.49	0.7264		166		age of intrusion		87RB/86SR DETERMINED BY X-RAY FLUORESCENCE; 11-POINT WHOLE-ROCK ISOCHRON ENVELOPE
4779	1	349.47	1	0.7045	apatite	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	3085	0.0000139*	0	500		0	0.7045	T	167		minimum age of intrusion		RB AND SR CONTENT DETERMINED BY X-RAY SPECTROGRAPHY; 6-POINT WHOLE-ROCK ISOCHRON
4780	1	349.47	1	0.7045	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1060	0.0000139*	121	224.9		2.1	0.7149	T	167		minimum age of intrusion		6-POINT WHOLE-ROCK ISOCHRON
4781	1	349.47	1	0.7045	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1102	0.0000139*	118.8	220.4		1.56	0.7122	T	167		minimum age of intrusion		6-POINT WHOLE-ROCK ISOCHRON
4782	1	349.47	1	0.7045	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1142	0.0000139*	153.2	286		1.54	0.7128	T	167		minimum age of intrusion		6-POINT WHOLE-ROCK ISOCHRON
4783	1	349.47	1	0.7045	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1143A	0.0000139*	208.5	110.3		5.48	0.7317	T	167		minimum age of intrusion		RB VALUE DETERMINED BY X-RAY SPECTROGRAPHY; 6-POINT WHOLE-ROCK ISOCHRON
4784	1	349.47	1	0.7045	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1143B	0.0000139*	359.6	155		6.5	0.7369	T	167		minimum age of intrusion		6-POINT WHOLE-ROCK ISOCHRON
4785	1	333.8	21	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1147A	0.0000139*	195.4	264.1		2.12	0.7144	T	168		minimum age of intrusion		RB VALUE DETERMINED BY X-RAY SPECTROGRAPHY; 6-POINT WHOLE-ROCK ISOCHRON
4786	1	391.56			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R6302	0.0000139*	194	95.9		5.87	0.741	T	166		age of intrusion		87RB/86SR DETERMINED BY X-RAY FLUORESCENCE (5.72); 11-POINT WHOLE-ROCK ISOCHRON ENVELOPE
4787	1	391.56			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R6304	0.0000139*	224	58.1		11.3	0.7727	T	166		age of intrusion		87RB/86SR DETERMINED BY X-RAY FLUORESCENCE (11.4); 11-POINT WHOLE-ROCK ISOCHRON ENVELOPE
4788	1	333.8	21	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1147B	0.0000139*	165.7	236.7		2.02	0.7153	T	168		minimum age of intrusion		6-POINT WHOLE-ROCK ISOCHRON
4789	1	333.8	21	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1147C	0.0000139*	209	326.5		1.9	0.7146	T	168		minimum age of intrusion		6-POINT WHOLE-ROCK ISOCHRON
4790	1	333.8	21	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1147D	0.0000139*	199.1	265.5		2.2	0.7154	T	168		minimum age of intrusion		RB AND SR CONTENT DETERMINED BY X-RAY SPECTROGRAPHY; 6-POINT WHOLE-ROCK ISOCHRON
4791	1	333.8	21	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1147E	0.0000139*	200.8	211.4		2.76	0.7178	T	168		minimum age of intrusion		6-POINT WHOLE-ROCK ISOCHRON
4792	1	333.8	21	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1147F	0.0000139*	69.9	388.5		0.3	0.7063	T	168		minimum age of intrusion		RB AND SR CONTENT DETERMINED BY X-RAY SPECTROGRAPHY; 6-POINT WHOLE-ROCK ISOCHRON
4793	1	371.98	7		muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	VND-2	0.0000139*	685.75	15.7		126.2	1.381	N			minimum age of intrusion	1-4 MM IN DIAMETER	2-POINT MUSCOVITE--WHOLE-ROCK ISOCHRON
4793	2	355.34	7		biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	VND-2	0.0000139*	1070.9	28.21		109.7	1.267	N			initial age disturbed by later metamorphism		2-POINT BIOTITE--WHOLE-ROCK ISOCHRON
4793	3				whole rock		VND-2	0.0000147*	174.9	202.24		2.5	0.725	N					NO AGE CALCULATED; DATA USED IN 2-POINT MINERAL--WHOLE-ROCK ISOCHRONS
4793	4				whole rock		VND-2	0.0000147*	172.89	202.24		2.47	0.726	N					NO AGE CALCULATED; DATA USED IN 2-POINT MINERAL--WHOLE-ROCK ISOCHRONS
4794	1	349.47	7		muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	VEP-1	0.0000139*	428.96	56.41		21.97	0.816	N			initial age disturbed by later metamorphism	FINE-GRAIN SIZE	2-POINT MUSCOVITE--WHOLE-ROCK ISOCHRON
4794	2	346.53	7		biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	VEP-1	0.0000139*	701	17.38		116.5	1.281	N			initial age disturbed by later metamorphism		2-POINT BIOTITE--WHOLE-ROCK ISOCHRON
4794	3				whole rock		VEP-1	0.0000147*	114.41	398.26		0.83	0.711	N					NO AGE CALCULATED; DATA USED IN 2-POINT MINERAL--WHOLE-ROCK ISOCHRONS
4795	1	336.74	7		muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	VBA-1	0.0000139*	407.02	165.87		7.09	0.741	N			initial age disturbed by later metamorphism	FINE-GRAINED	2-POINT MUSCOVITE--WHOLE-ROCK ISOCHRON
4795	2	332.83	7		biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	VBA-1	0.0000139*	695.28	32.82		61.21	0.998	N			initial age disturbed by later metamorphism		2-POINT BIOTITE--WHOLE-ROCK ISOCHRON
4795	3				whole rock		VBA-1	0.0000147*	160.14	558.81		0.828	0.711	N					NO AGE CALCULATED; DATA USED IN 2-POINT MINERAL--WHOLE-ROCK ISOCHRONS
4796	1	374.92	7		muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	DGQ-1	0.0000139*	504.66	15.61		93.4	1.203	N			minimum age of intrusion	1-4 MM IN DIAMETER	2-POINT COARSE MUSCOVITE--WHOLE-ROCK ISOCHRON
4796	2	369.05	7		muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	DGQ-1	0.0000139*	512.93	16.23		91.3	1.185	N			minimum age of intrusion	1-4 MM IN DIAMETER	2-POINT MUSCOVITE--WHOLE-ROCK ISOCHRON
4796	3	348.86	7		muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	DGQ-1	0.0000147*	534.24	50.11		30.8	0.851	N			initial age disturbed by later metamorphism	FINE-GRAINED	2-POINT MUSCOVITE--WHOLE-ROCK ISOCHRON
4796	4	327.12	7		biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	DGQ-1	0.0000147*	971.35	10.02		280	1.941	N			initial age disturbed by later metamorphism		2-POINT BIOTITE--WHOLE-ROCK ISOCHRON
4796	5				whole rock		DGQ-1	0.0000147*	179.02	174.74		2.96	0.72	N					NO AGE CALCULATED; DATA USED TO CALCULATE 2-POINT MINERAL--WHOLE-ROCK ISOCHRON
4797	1	419.95	13	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B401A	0.0000139*	175.71	77.84		6.523	0.7477	N	171		age of intrusion		16-POINT WHOLE-ROCK ISOCHRON
4797	2	410.16	16	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B401A	0.0000139*	175.71	77.84		6.523	0.7477	N	169		minimum age of intrusion		12-POINT WHOLE-ROCK ISOCHRON
4798	1	410.16	16	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B401B	0.0000139*	182.43	77.17				N	169		minimum age of intrusion		12-POINT WHOLE-ROCK ISOCHRON
4798	2	419.95	13	0.7039	whole rock	Conventional Rb-Sr (measured initial 87Sr/86Sr)	B401B	0.0000139*	182.43	77.17		6.832	0.7461	N	171		age of intrusion		16-POINT WHOLE-ROCK ISOCHRON
4799	1	410.16	16	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B401C	0.0000139*	181.3	76.35		6.862	0.7442	N	169		minimum age of intrusion		12-POINT WHOLE-ROCK ISOCHRON
4799	2	419.95	13	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B401C	0.0000139*	181.3	76.35		6.862	0.7442	N	171		age of intrusion		16-POINT WHOLE-ROCK ISOCHRON
4800	1	419.95	13	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B403	0.0000139*	204.74	75.46		7.841	0.752	N	171		age of intrusion		16-POINT WHOLE-ROCK ISOCHRON
4800	2	410.16	16	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B403	0.0000139*	204.74	75.46		7.841	0.752	N	169		minimum age of intrusion		12-POINT WHOLE-ROCK ISOCHRON
4801	1	410.16	16	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B405	0.0000139*	186.6	71.62		7.53	0.7493	N	169		minimum age of intrusion		12-POINT WHOLE-ROCK ISOCHRON
4801	2	419.95	13	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B405	0.0000139*	186.6	71.62		7.53	0.7493	N	171		age of intrusion		16-POINT WHOLE-ROCK ISOCHRON
4802	1	410.16	16	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B406	0.0000139*	199.27	31.46		18.514	0.8137	N	169		minimum age of intrusion		12-POINT WHOLE-ROCK ISOCHRON
4802	2	419.95	13	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B406	0.0000139*	199.27	31.46		18.514	0.8137	N	171		age of intrusion		16-POINT WHOLE-ROCK ISOCHRON
4803	1	410.16	16	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B407	0.0000139*	201.95	32.13		18.378	0.8108	N	169		minimum age of intrusion		12-POINT WHOLE-ROCK ISOCHRON
4803	2	419.95	13	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B407	0.0000139*	201.95	32.13		18.378	0.8108	N	171		age of intrusion		16-POINT WHOLE-ROCK ISOCHRON
4804	1	410.16	16	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B408	0.0000139*	205.7	32.08		18.535	0.8136	N	169		minimum age of intrusion		12-POINT WHOLE-ROCK ISOCHRON
4804	2	419.95	13	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B408	0.0000139*	205.7	32.08		18.535	0.8136	N	171		age of intrusion		16-POINT WHOLE-ROCK ISOCHRON	
4805	1	410.16	16	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B409A	0.0000139*	196.45	31.49		18.026	0.8115	N	169		minimum age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	
4805	2	419.95	13	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B409A	0.0000139*	196.45	31.49		18.026	0.8115	N	171		age of intrusion		16-POINT WHOLE-ROCK ISOCHRON	
4806	1	410.16	16	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B409B	0.0000139*	198.13	31.84		17.987	0.8141	N	169		minimum age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	
4806	2	419.95	13	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B409B	0.0000139*	198.13	31.84		17.987	0.8141	N	171		age of intrusion		16-POINT WHOLE-ROCK ISOCHRON	
4807	1	410.16	16	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B409C	0.0000139*	197.55	31.51		18.121	0.8124	N	169		minimum age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	
4807	2	419.95	13	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B409C	0.0000139*	197.55	31.51		18.121	0.8124	N	171		age of intrusion		16-POINT WHOLE-ROCK ISOCHRON	
4808	1	410.16	16	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B414	0.0000139*	204.61	53.97		10.956	0.7704	N	169		minimum age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	
4808	2	419.95	13	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B414	0.0000139*	204.61	53.97		10.956	0.7704	N	171		age of intrusion		16-POINT WHOLE-ROCK ISOCHRON	
4809	1	361.21	35	0.7071	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B421	0.0000139*	98.49	64.17		4.539	0.7292	N	170		initial age disturbed by later metamorphism		7-POINT WHOLE-ROCK ISOCHRON	PRIMARY AGE IS PROBABLY ABOUT 430 M.Y.
4809	2	419.95	13	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B421	0.0000139*	98.49	64.17		4.539	0.7292	N	171		age of intrusion		16-POINT WHOLE-ROCK ISOCHRON	
4810	1	361.21	35	0.7071	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B423A	0.0000139*	52.15	92.61		1.665	0.7159	N	170		initial age disturbed by later metamorphism		7-POINT WHOLE-ROCK ISOCHRON	PRIMARY AGE IS PROBABLY ABOUT 430 M.Y.
4811	1	361.21	35	0.7071	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B423B	0.0000139*	56.24	92.64		1.754	0.7167	N	170		initial age disturbed by later metamorphism		7-POINT WHOLE-ROCK ISOCHRON	PRIMARY AGE IS PROBABLY ABOUT 430 M.Y.
4812	1	361.21	35	0.7071	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B423C	0.0000139*	51.74	92.88		1.647	0.7151	N	170		initial age disturbed by later metamorphism		7-POINT WHOLE-ROCK ISOCHRON	PRIMARY AGE IS PROBABLY ABOUT 430 M.Y.
4813	1	361.21	35	0.7071	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B425	0.0000139*	78.05	45.81		4.924	0.7329	N	170		initial age disturbed by later metamorphism		7-POINT WHOLE-ROCK ISOCHRON	PRIMARY AGE IS PROBABLY ABOUT 460 M.Y.
4813	2	419.95	13	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B425	0.0000139*	78.05	45.81		4.924	0.7329	N	170		age of intrusion		16-POINT WHOLE-ROCK ISOCHRON	
4814	1	361.21	35	0.7071	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B426	0.0000139*	78.1	48.64		4.641	0.7307	N	170		initial age disturbed by later metamorphism		7-POINT WHOLE-ROCK ISOCHRON	PRIMARY AGE IS PROBABLY ABOUT 430 M.Y.
4814	2	419.95	13	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B426	0.0000139*	78.1	48.64		4.641	0.7307	N	171		age of intrusion		16-POINT WHOLE-ROCK ISOCHRON	
4815	1	361.21	35	0.7071	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B431	0.0000139*	133.48	66.04		5.842	0.7384	N	170		initial age disturbed by later metamorphism		7-POINT WHOLE-ROCK ISOCHRON	PRIMARY AGE IS PROBABLY ABOUT 430 M.Y.
4815	2	419.95	13	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	B431	0.0000139*	133.48	66.04		5.842	0.7384	N	171		age of intrusion		16-POINT WHOLE-ROCK ISOCHRON	
4816	1	357.3	15	0.7115	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	R3061	0.0000139*	206	61.5		9.72	0.7581	T	172		minimum age of volcanism		"206, 208, AND 203 PPM RB; 62.0, 60.7, AND 61.8 PPM SR; REPLICATE 87SR/86SR ANALYSES; 5-POINT HORNBLENDE--WHOLE-ROCK ISOCHRON"	
4816	2	357.3	15	0.7115	hornblende	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	HB 3061	0.0000139*	152	527		0.84	0.7148	T	172		minimum age of volcanism		5-POINT HORNBLENDE--WHOLE-ROCK ISOCHRON	
4817	1	357.3	15	0.7115	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	R4565	0.0000139*	135	64.3		6.1	0.7441	T	172		minimum age of volcanism		REPLICATE 87SR/86SR ANALYSES; 5-POINT HORNBLENDE--WHOLE-ROCK ISOCHRON	
4818	1	357.3	15	0.7115	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	R4566	0.0000139*	191	44.7		12.45	0.7745	T	172		minimum age of volcanism		REPLICATE 87SR/86SR ANALYSES; 5-POINT HORNBLENDE--WHOLE-ROCK ISOCHRON	
4819	1	357.3	15	0.7115	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	R4567	0.0000139*	143	84.8		4.9	0.7368	T	172		minimum age of volcanism		TRIPLICATE 87SR/86SR ANALYSES; 5-POINT HORNBLENDE--WHOLE-ROCK ISOCHRON	
4820	1	349.47	10	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-19	0.0000139*	188	76.3		7.15	0.7454	T	173		minimum age of volcanism		189 AND 187 PPM RB; 6-POINT WHOLE-ROCK ISOCHRON	
4821	1	349.47	10	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-20	0.0000139*	172	92.3		5.4	0.7371	T	173		minimum age of volcanism		6-POINT WHOLE-ROCK ISOCHRON	
4822	1	349.47	10	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-21	0.0000139*	217	65		9.72	0.758	T	173		minimum age of volcanism		6-POINT WHOLE-ROCK ISOCHRON	
4823	1	349.47	10	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-22	0.0000139*	182	66.4		7.97	0.7498	T	173		minimum age of volcanism		REPLICATE 87SR/86SR ANALYSES; 6-POINT WHOLE-ROCK ISOCHRON	
4824	1	349.47	10	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-25	0.0000139*	181	94.7		5.55	0.7371	T	173		minimum age of volcanism		6-POINT WHOLE-ROCK ISOCHRON	
4825	1	349.47	10	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ODC-26	0.0000139*	174	86		5.87	0.7395	T	173		minimum age of volcanism		6-POINT WHOLE-ROCK ISOCHRON	
4826	1	337.72	10	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4308	0.0000139*	151	78.4		5.6	0.7337	T	174		minimum age of volcanism		5-POINT WHOLE-ROCK ISOCHRON	ISOCHRON AGE IS IN QUESTION
4827	1	337.72	10	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4310	0.0000139*	215	22.35		28.21	0.8375	T	174		minimum age of volcanism		23.0 AND 21.7 PPM SR; 5-POINT WHOLE-ROCK ISOCHRON	ISOCHRON AGE IS IN QUESTION
4828	1	337.72	10	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4310B	0.0000139*	217	21		30.34	0.8536	T	174		minimum age of volcanism		5-POINT WHOLE-ROCK ISOCHRON	ISOCHRON AGE IS IN QUESTION
4829	1	337.72	10	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4311	0.0000139*	8.4	560		0.04	0.7073	T	174		minimum age of volcanism		5-POINT WHOLE-ROCK ISOCHRON	ISOCHRON AGE IS IN QUESTION
4830	1	337.72	10	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R4312	0.0000139*	25.3	903		0.08	0.7056	T	174		minimum age of volcanism		REPLICATE 87SR/86SR ANALYSES; 5-POINT WHOLE-ROCK ISOCHRON	ISOCHRON AGE IS IN QUESTION
4846	1	197	3		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NH-74-9	1.42E-05	1353	6.71			2.337	T			age of intrusion			
4849	1	164	5		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	QNH61-20	1.42E-05	458.1	10.18			1.009	T			age of intrusion			
4872	1	499.24	15	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 19	0.0000139*							175				12-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN	A MINIMUM AGE FOR THE FORMATION
4873	1	499.24	15	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 177	0.0000139*							175				12-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN	A MINIMUM AGE FOR THE FORMATION
4874	1	499.24	15	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 178	0.0000139*							175				12-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN	A MINIMUM AGE FOR THE FORMATION
4875	1	499.24	15	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 179	0.0000139*							175				12-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN	A MINIMUM AGE FOR THE FORMATION
4876	1	499.24	15	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M 180	0.0000139*							175				12-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN	A MINIMUM AGE FOR THE FORMATION
4877	1	499.24	15	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 181	0.0000139*							175				12-POINT WHOLE-ROCK ISOCHRON. ANALYTICAL DATA NOT GIVEN	A MINIMUM AGE FOR THE FORMATION
4878	1	499.24	15	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 183	0.0000139*							175				12-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN	A MINIMUM AGE FOR THE FORMATION
4879	1	499.24	15	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 185	0.0000139*							175				12-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN	A MININUM AGE FOR THE FORMATION
4880	1	499.24	15	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 186	0.0000139*							175				12-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN	A MINIMUM AGE FOR THE FORMATION
4881	1	499.24	15	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 188	0.0000139*							175				12-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN	A MINIMUM AGE FOR THE FORMATION
4882	1	499.24	15	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 189	0.0000139*							175				12-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN	A MINIMUM AGE FOR THE FORMATION
4883	1	499.24	15	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 191	0.0000139*							175				12-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN	A MINIMUM AGE FOR THE FORMATION
4884	1	381.77	10		whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	"ME 39A,B,C"	0.0000139*									age of intrusion		3-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THE 3 SAMPLES	
4885	1	363.17	15		whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	"R 1064A,B,C"	0.0000139*									age of intrusion		3-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THE 3 SAMPLES	
4886	1	353.38	12		whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R 1063A	0.0000139*							176		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THE 2 SAMPLES	
4887	1	353.38	12		whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R 1063B	0.0000139*							176		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THE 2 SAMPLES	
4888	1	386.67	15		whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	R 1057	0.0000139*							177		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN	
4889	1	386.67	15		whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	"R 1058A,B"	0.0000139*							177		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THE 2 SAMPLES	
4890	1	386.67	15		whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	"R 1059A,B"	0.0000139*							177		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THE 2 SAMPLES	
4891	1	373.94	10		whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	"R 1061A,B"	0.0000139*							178		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THE 2 SAMPLES	
4892	1	373.94	10		whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	"R 1062A,B"	0.0000139*							178		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THE 2 SAMPLES	
4893	1	445.4	25	0.712	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 158	0.0000139*							179		minimum age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THESE 4 SAMPLES	
4894	1	445.4	25	0.712	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 160	0.0000139*							179		minimum age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON. NO ANALTYICAL DATA GIVEN FOR THESE 4 SAMPLES	
4895	1	606.92	20	0.73	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 168	0.0000139*							180		age of intrusion		3-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THESE 3 SAMPLES	"ARMSTRONG OBTAINED K-AR MUSCOVITE AGE OF 594 +/- 18 M.Y. (WRITTEN COMMUN., 1971)"
4896	1	606.92	20	0.73	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 169	0.0000139*							180		age of intrusion		3-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THESE 3 SAMPLES	"ARMSTRONG OBTAINED K-AR MUSCOVITE AGE OF 594 +/- 18 M.Y. (WRITTEN COMMUN., 1971)"
4897	1	734.17	100	0.72	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 170	0.0000139*							181		age of metamorphic crystallization		5-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THESE 5 SAMPLES	
4898	1	734.17	100	0.72	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 171	0.0000139*							181		age of metamorphic crystallization		5-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THESE 5 SAMPLES	
4899	1	734.17	100	0.72	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 172	0.0000139*							181		age of metamorphic crystallization		5-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THESE 5 SAMPLES	
4900	1	734.17	100	0.72	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 173	0.0000139*							181		age of metamorphic crystallization		5-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THESE 5 SAMPLES	
4901	1	430.72	20	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 36	0.0000139*							182				6-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THESE 6 SAMPLES	A MINIMUM AGE FOR THE FORMATION
4902	1	430.72	20	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 37	0.0000139*							182				6-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THESE 6 SAMPLES	A MINIMUM AGE FOR THE FORMATION
4903	1	430.72	20	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 44	0.0000139*							182				6-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THESE 6 SAMPLES	A MINIMUM AGE FOR THE FORMATION
4904	1	430.72	20	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 47	0.0000139*							182				6-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THESE 6 SAMPLES	A MINIMUM AGE FOR THE FORMATION
4905	1	430.72	20	0.71	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 48	0.0000139*							182				6-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THESE 6 SAMPLES	A MINIMUM AGE FOR THE FORMATION
4906	1	416.03	35	0.72	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	"ME 50A,B,C,D,E,F"	0.0000139*							183				13-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THESE 6 SAMPLES	A MINIMUM AGE FOR THE FORMATION
4907	1	416.03	35	0.72	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	"ME 150A,B,C,D,E,F,G"	0.0000139*							182				13-POINT WHOLE-ROCK ISOCHRON. NO ANALYTICAL DATA GIVEN FOR THESE 7 SAMPLES	A MINIMUM AGE FOR THIS FORMATION
4909	1	450.29	10	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 204	0.0000139*				3.31	0.7264		184		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON. RB/SR=1.14	
4910	1	450.29	10	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 206	0.0000139*				1.97	0.7142		184		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON. RB/SR=0.68	
4911	1	450.29	10	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 209	0.0000139*				11.22	0.7762		184		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON. RB/SR=3.86	
4912	1	450.29	10	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 211	0.0000139*				3.39	0.7262		184		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON. RB/SR=1.17	
4913	1	450.29	10	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 212	0.0000139*				7.38	0.757		184		age of metamorphic crystallization		7-OINT WHOLE-ROCK ISOCHRON. RB/SR=2.54	
4914	1	450.29	10	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 214	0.0000139*				21.69	0.8451		184		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON. RB/SR=7.39	
4915	1	450.29	10	0.706	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 215	0.0000139*				4.82	0.7357		184		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON. RB/SR=1.66	
4916	1	414.07	34	0.7082	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 2	0.0000139*	118	79		4.32	0.7333	T	185			CALCITE-BEARING	8-POINT WHOLE-ROCK ISOCHRON	AGE IS QUESTIONABLE
4917	1	414.07	34	0.7082	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 5	0.0000139*	9.57	18.45		1.51	0.7152	T	185			CALCITE-BEARING	8-POINT WHOLE-ROCK ISOCHRON	AGE IS QUESTIONABLE
4918	1	414.07	34	0.7082	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 6	0.0000139*	235	162		4.21	0.7329	T	185			CALCITE-BEARING	8-POINT WHOLE-ROCK ISOCHRON	AGE IS QUESTIONABLE
4919	1	414.07	34	0.7082	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 10	0.0000139*	41	164		0.71	0.7118	T	185			CALCITE-BEARING	8-POINT WHOLE-ROCK ISOCHRON	AGE IS QUESTIONABLE
4920	1	414.07	34	0.7082	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 13	0.0000139*	147.26	45.17		9.5	0.7693	T	185			CALCITE-BEARING	8-POINT WHOLE-ROCK ISOCHRON	AGE IS QUESTIONABLE
4921	1	414.07	34	0.7082	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 14	0.0000139*	0			0	0.7148		185			CALCITE-BEARING	8-POINT WHOLE-ROCK ISOCHRON	AGE IS QUESTIONABLE
4922	1	414.07	34	0.7082	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 16	0.0000139*	21	8.82		6.91	0.7525	T	185			CALCITE-BEARING	8-POINT WHOLE-ROCK ISOCHRON	AGE IS QUESTIONABLE
4923	1	414.07	34	0.7082	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 17	0.0000139*	36	10.5		10	0.7592	T	185			CALCITE-BEARING	8-POINT WHOLE-ROCK ISOCHRON	AGE IS QUESTIONABLE
4924	1	381.77	5	0.7079	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 7	0.0000139*	95.7	18.82		14.85	0.7927	T	186		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4925	1	381.77	5	0.7079	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 8	0.0000139*	87.17	61.46		4.12	0.728	T	186		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4926	1	381.77	5	0.7079	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 9	0.0000139*	100.21	38.1		7.65	0.7498	T	186		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4927	1	381.77	5	0.7079	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 15	0.0000139*	116	91.3		3.7	0.7348	T	186		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4928	1	381.77	5	0.7079	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 102	0.0000139*	27	42.2		1.86	0.7204	T	186		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4929	1	381.77	5	0.7079	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 104	0.0000139*	64	36.8		5.05	0.7326	T	186		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4930	1	381.77	5	0.7079	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 106	0.0000139*	157.02	19.1		24.08	0.8355	T	186		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4931	1	381.77	5	0.7079	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 112	0.0000139*	54	43.2		3.63	0.7297		186		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4932	1	381.77	5	0.7079	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 115	0.0000139*	160.13	13.78		34.16	0.8893		186		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4933	1	381.77	5	0.7079	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 116	0.0000139*	125.2	17.96		20.4	0.8173	T	186		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4934	1	381.77	5	0.7079	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 117	0.0000139*	84.1	14.2		17.29	0.7992	T	186		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4935	1	381.77	5	0.7079	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 118	0.0000139*	11.4	4.45		7.44	0.7471	T	186		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4936	1	342.61	21	0.711	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 22	0.0000139*	123	92.5		3.86	0.7314	T	187				3-POINT WHOLE-ROCK ISOCHRON	AGE IS APPARENTLY TOO YOUNG
4937	1	342.61	21	0.711	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 23	0.0000139*	110	268		1.19	0.7159	T	187			CALCITE-BEARING	3-POINT WHOLE-ROCK ISOCHRON	AGE IS APPARENTLY TOO YOUNG
4938	1	342.61	21	0.711	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 33	0.0000139*	65.06	19.2		9.86	0.7587	T	187			CALCITE-BEARING	3-POINT WHOLE-ROCK ISOCHRON	AGE IS APPARENTLY TOO YOUNG
4939	1	384.71	6	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 24	0.0000139*	45	15.6		8.39	0.7505	T	188		age of volcanism		8-POINT WHOLE-ROCK ISOCHRON	
4940	1	384.71	6	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 25	0.0000139*	65	27		7	0.7433	T	188		age of volcanism		8-POINT WHOLE-ROCK ISOCHRON	
4941	1	384.71	6	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 27	0.0000139*	55	20.4		7.81	0.7477	T	188		age of volcanism		8-POINT WHOLE-ROCK ISOCHRON	
4942	1	384.71	6	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 28	0.0000139*	42	30.7		3.97	0.7286	T	188		age of volcanism		8-POINT WHOLE-ROCK ISOCHRON	
4943	1	384.71	6	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 29	0.0000139*	92.88	18.15		15.01	0.7909	T	188		age of volcanism		8-POINT WHOLE-ROCK ISOCHRON	
4944	1	384.71	6	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 30	0.0000139*	101.57	19.13		15.5	0.7939	T	188		age of volcanism		8-POINT WHOLE-ROCK ISOCHRON	
4945	1	384.71	6	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 31	0.0000139*	79.32	26.3		8.78	0.7547	T	188		age of volcanism		8-POINT WHOLE-ROCK ISOCHRON	
4946	1	384.71	6	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 32	0.0000139*	75.48	19.1		11.49	0.7671	T	188		age of volcanism		8-POINT WHOLE-ROCK ISOCHRON	
4947	1	378.83	9	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 134A	0.0000139*	45	72.93		1.78	0.7146	T	189		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4948	1	378.83	9	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 134B	0.0000139*	53.1	77.74		1.98	0.718	T	189		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4949	1	378.83	9	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 134C	0.0000139*	70	109		1.85	0.7152	T	189		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4950	1	378.83	9	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 134G	0.0000139*	85	35.9		6.87	0.7403	T	189		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4951	1	378.83	9	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 134H	0.0000139*	95	45.67		5.94	0.7358	T	189		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4952	1	378.83	9	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 134I	0.0000139*	96.11	35.43		7.88	0.7467	T	189		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4953	1	378.83	9	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 135A	0.0000139*	120	27.2		12.26	0.7727	T	189		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4954	1	378.83	9	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 135B	0.0000139*	123	50.6		7.06	0.7431	T	189		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4955	1	378.83	9	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 135C	0.0000139*	129	46.7		8.02	0.7481	T	189		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4956	1	378.83	9	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 135D	0.0000139*	144.01	72.36		5.77	0.7368	T	189		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4957	1	378.83	9	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 135E	0.0000139*	118	59		5.75	0.735	T	189		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4958	1	378.83	9	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 135F	0.0000139*	105	54.1		5.53	0.7341	T	189		age of volcanism		12-POINT WHOLE-ROCK ISOCHRON	
4959	1	360.24	33	0.7049	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 134D	0.0000139*	80	58.4		3.97	0.7274	T	190			CALCITE-BEARING	4-POINT WHOLE-ROCK ISOCHRON	AGE IS APPARENTLY TOO YOUNG
4960	1	360.24	33	0.7049	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 134E	0.0000139*	28	54.9		1.47	0.7121	T	190			CALCITE-BEARING	4-POINT WHOLE-ROCK ISOCHRON	AGE IS APPARENTLY TOO YOUNG
4961	1	360.24	33	0.7049	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 134F	0.0000139*	18	67		0.8	0.7095	T	190			CALCITE-BEARING	4-POINT WHOLE-ROCK ISOCHRON	AGE IS APPARENTLY TOO YOUNG
4962	1	360.24	33	0.7049	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME 134J	0.0000139*	64	51.2		3.62	0.7234		190			CALCITE-BEARING	4-POINT WHOLE-ROCK ISOCHRON	AGE IS APPARENTLY TOO YOUNG
4963	1	353.38	7	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME VH A	0.0000139*				44.63	0.9301		191		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON; RB/SR=15.13 BY X-RAY FLUORESCENCE
4964	1	353.38	7	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME VH B	0.0000139*				25.29	0.8316		191		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON; RB/SR=8.63 BY X-RAY FLUORESCENCE
4965	1	353.38	7	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME VH C	0.0000139*				15.01	0.7785		191		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON; RB/SR=5.15 BY X-RAY FLUORESCENCE
4966	1	353.38	7	0.705	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	ME VH D	0.0000139*				37.8	0.8953		191		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON
5040	1			0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	YU-1039	1.43E-05	246	131			0.82108	T			age of intrusion		ASSUMED INITIAL 87SR/86SR; RB VALUE FROM X-RAY FLUORESCENCE
5040	2	107.7	11		biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	YU-1039	0.0000143*	1057	7			1.48	T			age of later metamorphism		"2-POINT, BIOTITE-WHOLE-ROCK ISOCHRON; RB VALUE FROM X-RAY FLUORESCENCE (ALSO SEE ARMSTRONG, 1976, ISOCHRON/WEST)"
5040	3	107.7	11		whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	YU-1039	0.0000143*	246	131			0.82108	T			age of later metamorphism		"2-POINT, BIOTITE-WHOLE-ROCK ISOCHRON; RB VALUE FROM X-RAY FLUORESCENCE (ALSO SEE ARMSTRONG, 1976, ISOCHRON/WEST)"
5041	1			0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	YU-1038	1.43E-05	296	99			0.88519	T			age of metamorphic crystallization		ASSUMED INITIAL 87SR/86SR; RB VALUE BY X-RAY FLUORESCENCE
5041	2	103.7	10		biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	YU-1038	0.0000143*	1280	6			1.793	T			age of later metamorphism		"2-POINT, BIOTITE-WHOLE-ROCK ISOCHRON; RB VALUE BY X-RAY FLUORESCENCE (ALSO SEE ARMSTRONG, 1976, ISOCHRON/WEST"
5041	3	103.7	10		whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	YU-1038	0.0000143*	296	99			0.88519	T			age of later metamorphism		"2-POINT, BIOTITE-WHOLE-ROCK ISOCHRON; RB VALUE BY X-RAY FLUORESCENCE (ALSO SEE ARMSTRONG, 1976, ISOCHRON/WEST"
5042	1			0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	YU-1037	1.43E-05	239	115			0.8189	T			age of intrusion		ASSUMED INITIAL 87SR/86SR; RB VALUE BY X-RAY FLUORESCENCE
5042	2	103.7	10		biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	YU-1037	0.0000143*	918	12			1.135	T			age of later metamorphism		"2-POINT, BIOTITE-WHOLE-ROCK ISOCHRON; RB VALUE BY X-RAY FLUORESCENCE (ALSO SEE ARMSTRONG, 1976, ISOCHRON/WEST)"
5042	3	103.7	10		whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	YU-1037	0.0000143*	239	115			0.8189	T			age of later metamorphism		"2-POINT, BIOTITE-WHOLE-ROCK ISOCHRON; RB VALUE BY X-RAY FLUORESCENCE (ALSO SEE ARMSTRONG, 1976, ISOCHRON/WEST)"
5043	1			0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	YU-1036	1.43E-05	246	124			0.81628	T			age of intrusion		ASSUMED INITIAL 87SR/86SR; RB VALUE BY X-RAY FLUORESCENCE
5043	2	115.8	12		biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	YU-1036	0.0000143*	988	6			1.565	T			age of later metamorphism		"2-POINT, BIOTITE-WHOLE-ROCK ISOCHRON; RB VALUE BY X-RAY FLUORESCENCE (ALSO SEE ARMSTRONG, 1976, ISOCHRON/WEST)"
5043	3	115.8	12		whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	YU-1036	0.0000143*	246	124			0.81628	T			age of later metamorphism		"2-POINT, BIOTITE-WHOLE-ROCK ISOCHRON; RB VALUE BY X-RAY FLUORESCENCE (ALSO SEE ARMSTRONG, 1979, ISOCHRON/WEST)"
5051	1	74.7	2.5	0.705	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	USGS(D)MY-508	1.42E-05	428	38.8		32.08	0.739	T			age of intrusion			
5062	1	63.14	12	0.7078	glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	LEN-2A	0.0000139*	240.28	135.57		5.13	0.7124	T		Harris (1975)		MAMMILLATED TO LOBATE GLAUCONITE		AGE IS ABOUT 10% TOO OLD.  GLAUCONITE MAY BE DETRITAL
5063	1	54.52	6.7	0.7078	glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	LEN-2B	0.0000139*	250.86	76.13		9.55	0.7152	T		Harris (1975)	age of sedimentation	MAMMILATED TO LOBATE GLAUCONITE		
5064	1	56.58	3.4	0.7078	glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	LEN-2C	0.0000139*	238.6	33.1		20.9	0.7246	T		Harris (1975)	age of sedimentation	MAMMILLATED TO LOBATE GLAUCONITE		
5065	1	66.66	1	0.707	glauconite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	NCF4-2	0.0000139*	199.5	56.6		10.22	0.7167	T	204	Harris (1975)	age of sedimentation	"UNABRADED, MAMMILLAR TO LOBATE AUTHIGENIC GLAUCONITE PELLETS"	5-POINT MINERAL ISOCHRON	OTHER DATA POINTS FOR ISOCHRON ARE FROM HARRIS AND BOTTINO (1974)
5066	1	66.76	1	0.70735	glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	RP-36-3	0.0000139*	198.17	19.53		29.4	0.7352	T		Harris (1975)	age of sedimentation	"UNABRADED, MAMMILLAR TO LOBATE AUTHIGENIC GLAUCONITE PELLETS"	"MODEL AGE CALCULATION, INITIAL 87SR/86SR BASED ON ISOTOPIC COMPOSITION OF AN OSTREA SP. COLLECTED WITH GLAUCONITE SAMPLES"	
5066	2	66.66	1	0.707	glauconite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	RP-36-3	0.0000139*	198.17	19.53		29.4	0.7352	T	204	Harris (1975)	age of sedimentation		5-POINT MINERAL ISOCHRON	ONE DATA POINT FOR THE ISOCHRON COMES FROM AN ARTICLE BY HARRIS (1976)
5067	1	67.45	1.2	0.70735	glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	RP-4	0.0000139*	190.3	16.19		34.13	0.74	T		Harris (1975)	age of sedimentation	"UNABRADED, MAMILLAR TO LOBATE AUTHIGENIC GLAUCONITE PELLETS"	"MODEL AGE CALCULATION, INITIAL 87SR/86SR BASED ON ISOTOPIC COMPOSITION OF AN OSTREA SP. COLLECTED WITH GLAUCONITE SAMPLES"	
5067	2	66.66	1	0.707	glauconite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	RP-4	0.0000139*	190.3	16.19		34.13	0.74	T	204	Harris (1975)	age of sedimentation		5-POINT MINERAL ISOCHRON	ONE DATA POINT FOR THE ISOCHRON COMES FROM AN ARTICLE BY HARRIS (1976)
5068	1	63.73	1	0.70735	glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	RP-2	0.0000139*	174.3	13.29		38.08	0.7418	T		Harris (1975)		"UNABRADED, MAMMILAR TO LOBATE AUTHIGENIC GLAUCONITE PELLETS, SEPARATE SPLIT RP-2"	"MODEL AGE CALCULATION, INITIAL 87SR/86SR BASED ON ISOTOPIC COMPOSITION OF AN OSTREA SP. COLLECTED WITH GLAUCONITE SAMPLES"	A MINIMUM AGE FOR SEDIMENTATION
5068	2	66.66	1	0.707	glauconite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	RP-2	0.0000139*	174.3	13.29		38.08	0.7418	T	204	Harris (1975)	age of sedimentation		5-POINT MINERAL ISOCHRON	ONE DATA POINT FOR THE ISOCHRON COMES FROM AN ARTICLE BY HARRIS (1976)
5069	1	66.66	1	0.70735	glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	RP-2	0.0000139*	182.1	13.42		39.41	0.7447	T		Harris (1975)	age of sedimentation	"UNABRADED, MAMMILLAR TO LOBATE AUTHIGENIC GLAUCONITE PELLETS"	"MODEL AGE CALCULATION, INITIAL 87SR/86SR BASED ON ISOTOPIC COMPOSTITON OF AN OSTREA SP. COLLECTED WITH GLAUCONITE SAMPLES"	
5069	2	66.66	1	0.707	glauconite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	RP-2	0.0000139*	182.1	13.42		39.41	0.7447	T	204	Harris (1975)	age of sedimentation		5-POINT MINERAL ISOCHRON	ONE DATA POINT FOR THE ISOCHRON COMES FROM AN ARTICLE BY HARRIS (1976)
5109	1	2610.73	66	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	S-72-706A	0.0000139*	252	124			0.932	T	192		minimum age of metamorphic crystallization		5-POINT WHOLE-ROCK ISOCHRON	"AGE INTERPRETED AS MINIMUM FOR AMPHIBOLITE METAMORPHISM; GREENSCHIST METAMORPHISM OCCURRED ABOUT 1700 M.Y. AGO (GILETTE, 1966)"
5110	1	2610.73	66	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	S-72-706B	0.0000139*	86	350			0.7351	T	192		minimum age of metamorphic crystallization		5-POINT WHOLE-ROCK ISOCHRON	"AGE INTERPRETED AS MINIMUM FOR AMPHIBOLITE METAMORPHISM; GREENSCHIST METAMORPHISM OCCURRED ABOUT 1700 M.Y. AGO (GILETTI, 1966)"
5111	1	2610.73	66	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	S-72-708	0.0000139*	188	77			0.9833	T	192		minimum age of metamorphic crystallization		5-POINT WHOLE-ROCK ISOCHRON	"AGE INTERPRETED AS MINIMUM FOR AMPHIBOLITE METAMORPHISM; GREENSCHIST METAMORPHISM OCCURRED ABOUT 1700 M.Y. AGO (GILETTE, 1966)."
5112	1	2610.73	66	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	S-72-908A	0.0000139*	141	77			0.9156	T	192		minimum age of metamorphic crystallization		5-POINT WHOLE-ROCK ISOCHRON	"AGE INTERPRETED AS MINIMUM FOR AMPHIBOLITE METAMORPHISM; GREENSCHIST METAMORPHISM OCCURRED ABOUT 1700 M.Y. AGO (GILETTE, 1966)"
5113	1	2610.73	66	0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	S-72-908B	0.0000139*	80	326			0.7333	T	192		minimum age of metamorphic crystallization		5-POINT WHOLE-ROCK ISOCHRON	"AGE INTERPRETED AS MINIMUM FOR AMPHIBOLITE METAMORPHISM; GREENSCHIST METMORPHISM OCCURRED ABOUT 1700 M.Y. AGO (GILLETI, 1966)"
5182	1	303.46	20	0.7084	calcite group	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	ME-20B	0.0000139*	0	275				T				MN-RICH CALCITE	NO RB DETECTED BY XRF; SR VALUE BY XRF. TWO-POINT 2-MINERAL ISOCHRON GAVE LISTED AGE	MAY BE AGE OF MINERALIZATION BUT INTERPRETATION IS TENUOUS AS IS ALSO THE AGE
5182	2	303.46	20	0.7084	stilpnomelane	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	ME-20A	0.0000139*				7.02	0.7385					98% PURE CONCENTRATE	87RB 186SR AND 87SR/86SR VALUES DETERMINED BY XRF ANALYSES; 2-POINT 2-MINERAL ISOCHRON GAVE LISTED AGE	MAY BE AGE OF MINERALIZATION BUT INTERPRETATION IS TENUOUS AS IS ALSO THE AGE
5199	1	376.88	20		whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	(NOT GIVEN)	0.0000139*									age of intrusion		WHOLE ROCK ISOCHRON BASED ON UNSPECIFIED NUMBER OF SAMPLES; NO ANALYTICAL DATA GIVEN	
5200	1	1095.39	39	0.7073	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN1B	0.0000139*	225.93	149.42		4.218	0.7733	N	195		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5201	1	1095.39	39	0.7073	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN1C	0.0000139*	226.08	148.56		4.246	0.7738	N	195		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5202	1	1095.39	39	0.7073	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN 2	0.0000139*	242.79	150.17		4.511	0.7792	N	195		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5203	1	1095.39	39	0.7073	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN 3	0.0000139*	206.72	164.39		3.509	0.763	N	195		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5204	1	1095.39	39	0.7073	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN4	0.0000139*	197.51	168.48		3.271	0.7586	N	195		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5205	1	1095.39	39	0.7073	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN 5	0.0000139*	188.15	158.16		3.319	0.7605	N	195		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5206	1				whole rock		BGN 6	0.0000139*	336.93	149.69		6.28	0.7984	N					NO AGE DETERMINED; ANALYTICAL DATA DOES NOT PLOT ON 1119 M.Y. ISOCHRON	AGE IS PROBABLY 1120 M.Y.
5207	1	1095.39	39	0.7073	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN 7	0.0000139*	246.83	96.42		7.093	0.8168	N	195		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5208	1	1095.39	39	0.7073	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN 8	0.0000139*	205.77	271.66		2.138	0.7396	N	195		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5209	1	1119.86	11	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN 14	0.0000139*	120.71	147.84		2.278	0.7414	N	196		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5210	1	1119.86	11	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN 15	0.0000139*	51.74	154.29		0.936	0.7208	N	196		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5211	1	1119.86	11	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN 17	0.0000139*	85.71	236.42		1.011	0.7217	N	196		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5212	1	1119.86	11	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN 18	0.0000139*	125.57	74.39		4.71	0.7815	N	196		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5213	1	1119.86	11	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN 19	0.0000139*	236.62	50.7		13.035	0.9166	N	196		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5214	1	1119.86	11	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN 20	0.0000139*	254.44	51.61		13.755	0.923	N	196		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5215	1	1119.86	11	0.7055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN 24	0.0000139*	202.95	68.74		8.237	0.8382	N	196		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5216	1	1184.47	45	0.7023	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN 9	0.0000139*	127.79	198.86		1.793	0.7327	N	197		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5217	1				whole rock		BGN 10	0.0000139*	62.93	114.49		1.533	0.7321	N					NO AGE DETERMINED; ANALYTICAL DATA DOES NOT PLOT ON 1210 M.Y. ISOCHRON	AGE IS AROUND 1200 M.Y.
5218	1	1184.47	45	0.7023	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN 11	0.0000139*	164.44	136.77		3.355	0.7595	N	197		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5219	1	1184.47	45	0.7023	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN 12	0.0000139*	45.35	108.76		1.163	0.7226	N	197		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5220	1	1184.47	45	0.7023	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN 26	0.0000139*	112.16	118.03		2.651	0.7471	N	197		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5221	1	1184.47	45	0.7023	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN 27	0.0000139*	82.42	120.08		1.915	0.7342	N	197		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5222	1	1184.47	45	0.7023	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN 28	0.0000139*	135.02	127.26		2.96	0.7534	N	197		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5223	1	1184.47	45	0.7023	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	BGN 29	0.0000139*	103.44	119.12		2.423	0.7422	N	197		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5227	1	380.95	196	0.7128	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	TRG-4	0.0000147*	180.6	75.99		6.72	0.7462	T	199		age not evaluated		"4-POINT WHOLE-ROCK ISOCHRON; RB=179.6, 179.0, AND 183.1 PPM; 87SR/86SR=0.7444 AND 0.7480"	
5228	1	380.95	196	0.7128	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	TRG-9	0.0000147*	130.8	241.4		1.53	0.7167	T	199		age not evaluated		4-POINT WHOLE-ROCK ISOCHRON; SR=243.6 AND 239.2 PPM	
5228	2	681.16	66	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	TRG-9	0.0000147*	130.8	241.4		1.53	0.7167	T	200		age of metamorphic crystallization		3-POINT WHOLE-ROCK ISOCHRON; SR=243.6 AND 239.2 PPM	
5229	1	380.95	196	0.7128	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	TRG-10	0.0000147*	173.5	150		3.27	0.7342	T	199		age not evaluated		4-POINT WHOLE-ROCK ISOCHRON	
5229	2	681.16	66	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	TRG-10	0.0000147*	173.5	150		3.27	0.7342	T	200		age of metamorphic crystallization		3-POINT WHOLE-ROCK ISOCHRON	
5230	1	380.95	196	0.7128	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	TRG-16	0.0000147*	203.3	159.9		3.59	0.7362	T	199		age not evaluated		4-POINT WHOLE-ROCK ISOCHRON	
5230	2	681.16	66	0.702	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	TRG-16	0.0000147*	203.3	159.9		3.59	0.7362	T	200		age of metamorphic crystallization		3-POINT WHOLE-ROCK ISOCHRON	
5231	1	313.67	19	0.7169	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	HVA-8	0.0000147*	146.8	170.3		2.44	0.7254	T	201		initial age disturbed by later metamorphism		4-POINT WHOLE-ROCK ISOCHRON	
5231	2	629.4	76	0.7041	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	HVA-8	0.0000147*	146.8	170.3		2.44	0.7254	T	202		age of metamorphic crystallization		3-POINT WHOLE-ROCK ISOCHRON	
5232	1	313.67	19	0.7169	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	HVA-18	0.0000147*	126.3	158.4		2.25	0.7247	T	201		initial age disturbed by later metamorphism		4-POINT WHOLE-ROCK ISOCHRON	
5232	2	629.4	76	0.7041	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	HVA-18	0.0000147*	126.3	158.4		2.25	0.7247	T	202		age of metamorphic crystallization		3-POINT WHOLE-ROCK ISOCHRON	
5233	1	313.67	19	0.7169	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	HVA-19	0.0000147*	181.4	129.8		3.95	0.7395	T	201		initial age disturbed by later metamorphism		4-POINT WHOLE-ROCK ISOCHRON	
5233	2	629.4	76	0.7041	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	HVA-19	0.0000147*	181.4	129.8		3.95	0.7395	T	202		age of metamorphic crystallization		3-POINT WHOLE-ROCK ISOCHRON	
5234	1	313.67	19	0.7169	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	HVA-26	0.0000147*	136.9	8.26		46.8	0.9247	T	201		initial age disturbed by later metamorphism		4-POINT WHOLE-ROCK ISOCHRON	
5274	1	347.51		0.703	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	(NOT GIVEN)	0.0000139*	678	18.7	1			N			initial age disturbed by later metamorphism		ANALYTICAL DATA NOT PUBLISHED WITH AGE	
5291	1	362.32	11	0.702	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-607B	0.0000147*	478	10.2	0.7			N				8% CHLORITE IN BIOTITE CONCENTRATE		AGE APPARENTLY REFLECTS THE TIME OF A THERMAL EVENT
5292	1	362.32	11	0.702	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-480B	0.0000147*	456	5.3	0.66			N						AGE APPARENTLY REFLECTS THE TIME OF A THERMAL EVENT
5292	2	445.14	20	0.702	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-480M	0.0000147*	200	24.3	0.36			N					RB=199 AND 201 PPM; SR=24.4 AND 24.2 PPM; RADIOGENIC 87SR=0.358 AND 0.364 PPM	THIS AGE APPEARS TO HAVE BEEN INFLUENCED BY THE PRESENCE OF DETRITAL MUSCOVITE IN THE SEDIMENTS
5292	3				whole rock		L-480WR	0.0000147*	122	135			0.7387	N					NO AGE CALCULATED	
5295	1	429.61	21	0.702	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-615M	0.0000147*	251	34.9	0.44			N			minimum age of intrusion			
5296	1	336.44	13	0.702	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-155B	0.0000147*	427	33.6	0.58			N						"AGE APPARENTLY EFFECTED BY PERMIAN THERMAL EVENT (SEE ZARTMAN AND OTHERS, 1970)"
5303	1	323.04	13		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-141B	0.0000139*	457	15.1	0.59			N			initial age disturbed by later metamorphism			THE GNEISS HAS UNDERGONE TWO PERIODS OF METAMORPHISM--COMPILER
5309	1	325.97	15		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-140 B	0.0000139*	368	6.2	0.48			N			minimum age of metamorphic crystallization			
5321	1	429.74	17		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-22B	0.0000139*	880	25.7	1.52			N			initial age disturbed by later metamorphism			
5321	2	559.93	29		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-22F	0.0000139*	215	64.1	0.48			N						AGE IS A MINIMUM FOR THE GRANITE.
5322	1	322.06	13		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-133B	0.0000139*	620	11.1	0.8			N			initial age disturbed by later metamorphism			
5324	1	873.18	30		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-149B	0.0000139*	865	9.4	3.04			N			minimum age of metamorphic crystallization			
5327	1	703.83	25		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-332B	0.0000139*	717	11.8	2.03			N						MAY BE MINIMUM AGE OF METAMORPHISM
5331	1	303.46		0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	306	0.0000139*	95.3	72.9		3.8	0.7259				initial age disturbed by weathering		ANALYTICAL DATA PLOTS NEAR A 310 M.Y. REFERENCE ISOCHRON WHICH IS APPROX. 20% LESS THAN THEN TRUE AGE	
5331	2	349.47		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	306	0.0000139*	95.3	72.9		3.8	0.7259	T						AGE IS SLIGHTLY YOUNGER THAN THE STRATIGRAPHIC AGE OF THE BENTONITE
5332	1	303.46		0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	300	0.0000139*	156.6	36.1		12.63	0.7609	T			initial age disturbed by weathering		ANALYTICAL DATA PLOTS NEAR A 310 M.Y. REFERENCE ISOCHRON WHICH IS APPROX. 20% LESS THAN THE TRUE AGE	
5332	2	299.54		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	300	0.0000139*	156.6	36.1		12.63	0.7609	T			initial age disturbed by weathering			
5333	1	303.46		0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	313	0.0000139*	83.5	49.4		4.9	0.7273	T			initial age disturbed by weathering		ANALYTICAL DATA PLOTS NEAR A 310 M.Y. REFERENCE ISOCHRON WHICH IS APPROX. 20% LESS THAN THE TRUE AGE	
5333	2	290.73		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	313	0.0000139*	83.5	49.4		4.9	0.7273	T			initial age disturbed by weathering			
5334	1	406.24		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	503	0.0000139*	55.35	15.6		10.34	0.7668	T					RB=54.9 AND 55.8 PPM; SR=15.6 AND 15.6 PPM; 87SR/86SR=0.7661 AND 0.7675	AGE IS TOO OLD
5335	1	303.46		0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	501	0.0000139*	88.2	17.6		14.59	0.7681	T			initial age disturbed by weathering		ANALYTICAL DATA PLOTS NEAR A 310 M.Y. REFERENCE ISOCHRON WHICH IS APPROX. 20% LESS THAN THE TRUE AGE	
5335	2	278.01		0.707	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	501B	0.0000139*	93.4	16.8		16.2	0.7711	T						AGE IS TOO YOUNG
5335	3	311.6		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	501	0.0000147*	88.2	17.6		14.59	0.7681	T			initial age disturbed by weathering			
5336	1	278.01		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	488	0.0000139*	110.6	17.5		18.43	0.7798	T			initial age disturbed by weathering			
5336	2	194.8		0.707	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	488B	0.0000139*	168.4	18.1		27.13	0.7823	T			initial age disturbed by weathering			
5337	1	303.46		0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	304	0.0000139*	62.8	20.4		8.95	0.7454	T			initial age disturbed by weathering		ANALYTICAL DATA PLOTS NEAR A 310 M.Y. REFERENCE ISOCHRON WHICH IS APPROX. 20% LESS THAN THE TRUE AGE	
5337	2	301.5		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	304	0.0000139*	62.8	20.4		8.95	0.7454	T			initial age disturbed by weathering			
5338	1	192.84		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	312	0.0000139*	97.55	32.15		8.79	0.73115	T			initial age disturbed by weathering		RB=97.6 AND 97.5 PPM; SR=32.5 AND 31.8 PPM; 87SR/86SR=0.7312 AND 0.7311	
5339	1	303.46		0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	492	0.0000139*	97.3	31.1		9.1	0.745	T			initial age disturbed by weathering		ANALYTICAL DATA PLOTS NEAR A 310 M.Y. REFERENCE ISOCHRON WHICH IS APPROX. 20% LESS THAN THE TRUE AGE	
5339	2	418.97		0.707	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	492B	0.0000139*	116.3	45.7		7.39	0.7511	T						AGE IS TOO OLD
5339	3	310.56		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	492	0.0000147*	97.3	31.1		9.1	0.745	T			initial age disturbed by weathering			
5340	1	278.99		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	346	0.0000139*	134.8	6.81		58.6	0.9393	T			initial age disturbed by weathering			
5341	1	139		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	314	0.0000139*	279.5	8.56		95.73	0.8965	T			initial age disturbed by weathering		"RB=277.4, 276.6, AND 284.5 PPM; SR=8.85, 8.34, AND 8.49 PPM"	
5342	1	303.46		0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	309	0.0000139*	78	90.3		2.49	0.7181	T			initial age disturbed by weathering		ANALYTICAL DATA PLOTS NEAR A 310 M.Y. REFERENCE ISOCHRON WHICH IS APPROX. 20% LESS THAN THE TRUE AGE	
5342	2	316.18		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	309	0.0000139*	78	90.3		2.49	0.7181	T			initial age disturbed by weathering			
5343	1	303.46		0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	310	0.0000139*	120.8	65		5.4	0.7297	T			initial age disturbed by weathering		ANALYTICAL DATA PLOTS NEAR A 310 M.Y. REFERENCE ISOCHRON WHICH IS APPROX. 20% LESS THAN THE TRUE AGE	
5343	2	295.63		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	310	0.0000139*	120.8	65		5.4	0.7297	T			initial age disturbed by weathering			
5344	1	303.46		0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	311	0.0000139*	168.7	12.6		39.44	0.8744	T			initial age disturbed by weathering		ANALYTICAL DATA PLOTS NEAR A 310 M.Y. REFERENCE ISOCHRON WHICH IS APPROX. 20% LESS THAN THE TRUE AGE	
5344	2	298.56		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	311	0.0000139*	168.7	12.6		39.44	0.8744	T			initial age disturbed by weathering			
5345	1	303.46		0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	315	0.0000139*	112.1	41		7.93	0.7403	T			initial age disturbed by weathering		ANALYTICAL DATA PLOTS NEAR A 310 M.Y. REFERENCE ISOCHRON WHICH IS APPROX. 20% LESS THAN THE TRUE AGE	
5345	2	294.65		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	315	0.0000139*	112.1	41		7.93	0.7403	T			initial age disturbed by weathering			
5346	1	375.9		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	350	0.0000139*	104.9	30		10.19	0.7615	T				"60-80% GLAUCONITE, REST QUARTZ"		AGE IS NEAR AGREEMENT WITH STRATIGRAPHIC AGE (LOWER DAVONIAN)
5347	1	414.07		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	351	0.0000139*	179.4	75.9		6.86	0.7475	T				"60-80% GLAUCONITE, REST QUARTZ"		AGE IS TOO OLD
5348	1	514.9		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	299	0.0000139*	185.6	113		4.76	0.7419	T				"60-80% GLAUCONITE, REST QUARTZ"		AGE IS TOO OLD
5349	1	303.46		0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	308	0.0000139*	64.9	69.2		2.73	0.7193	T			initial age disturbed by weathering		ANALYTICAL DATA PLOTS NEAR A 310 M.Y. REFERENCE ISOCHRON WHICH IS APPROX. 20% LESS THAN THE TRUE AGE	
5349	2	316.18		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	308	0.0000139*	64.9	69.2		2.73	0.7193	T			initial age disturbed by weathering			
5350	1	303.46		0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	302	0.0000139*	80.1	62.6		3.77	0.7253	T			initial age disturbed by weathering		ANALYTICAL DATA PLOTS NEAR A 310 M.Y. REFERENCE ISOCHRON WHICH IS APROX 20% LESS THAN THE TRUE AGE	
5350	2	340.66		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	302	0.0000139*	80.1	62.6		3.77	0.7253	T			initial age disturbed by weathering			
5351	1	303.46		0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	301	0.0000139*	93.3	45.2		5.98	0.7338	T			initial age disturbed by weathering		ANALYTICAL DATA PLOTS NEAR A 310 M.Y. REFERECE ISOCHRON WHICH IS APPROX. 20% LESS THAN THE TRUE AGE	
5351	2	315.21		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	301	0.0000139*	93.3	45.2		5.98	0.7338	T			initial age disturbed by weathering			
5352	1	303.46		0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	305	0.0000139*	99.1	100.8		2.84	0.7208	T			initial age disturbed by weathering		ANALYTICAL DATA PLOTS NEAR A 310 M.Y. REFERENCE ISOCHRON WHICH IS APPROX. 20% LESS THAN THE TRUE AGE	
5352	2	341.64		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	305	0.0000139*	99.1	100.8		2.84	0.7208	T			initial age disturbed by weathering			
5353	1	303.46		0.707	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	303	0.0000139*	117.2	80.1		4.24	0.7245	T			initial age disturbed by weathering		ANALYTICAL DATA PLOTS NEAR A 310 M.Y. REFERENCE ISOCHRON WHICH IS APPROX. 20% LESS THAN THE TRUE AGE	
5353	2	289.75		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	303	0.0000139*	117.2	80.1		4.24	0.7245	T			initial age disturbed by weathering			
5354	1	360.24		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	489	0.0000139*	142.5	42.9		9.66	0.7566	T					RB=142.3 AND 142.7 PPM; SR=42.5 AND 43.3 PPM; 87SR/86SR=0.7572 AND 0.7560	THIS AGE AGREES WITH THE INFERRED STRATIGRAPHIC AGE
5355	1	257.45		0.707	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	487	0.0000139*	73.5	18.5		11.54	0.7492	T			initial age disturbed by weathering			
5356	1	562.87	30	0.725	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2A	0.0000139*	123	3.69		96.5	1.518	N	198		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5357	1	562.87	30	0.725	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2B	0.0000139*	64.8	821		0.2	0.7112	N	198		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5358	1	562.87	30	0.725	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2C	0.0000139*	115	4.44		74.6	1.302	N	198		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5359	1	562.87	30	0.725	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2F	0.0000139*	68.8	18.2		10.94	0.829	N	198		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5360	1	562.87	30	0.725	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2H	0.0000139*	122	3.52		100.7	1.467	N	198		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON	
5361	1	562.87	30	0.725	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2I	0.0000139*	56.9	29.65		5.54	0.78345	N	198		age of metamorphic crystallization		RB = 58.2 AND 55.6 PPM; SR = 29.7 AND 29.6 PPM; 87SR/86SR = 0.7836 AND 0.7833; 7-POINT WHOLE-ROCK ISOCHRON	
5362	1	562.87	30	0.725	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2K	0.0000139*	140	2.19		176.7	2.1675	N	198		age of metamorphic crystallization		SR=2.20 AND 2.17 PPM; RB=139 AND 141 PPM; 87SR/86SR=2.165 AND 2.170; 7-POINT WHOLE-ROCK ISOCHRON	
5363	1				whole rock		1C	0.0000139*	106	71.3		4.31	0.7958	N					NO AGE CALCULATED	THE AGE IS PROBABLY ABOUT 575 M.Y.--THE AGE REPORTED FOR THE YONKERS GNEISS
5364	1				whole rock		1D	0.0000139*	111	88.9		3.58	0.7618	N					NO AGE CALCULATED	THE AGE IS PROBABLY ABOUT 575 M.Y.--THE AGE REPORTED FOR THE YONKERS GNEISS
5382	1	166.67	9		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	B-3126	0.0000147*	2016	14.9	1.36			T		Hurley and others (1960)	age of intrusion		RADIOGENIC-87SR/87RB=0.00238	
5383	1	254.66	13		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	B-3815A	0.0000147*	898	16.7	0.84			T		Hurley and others (1960)	initial age disturbed by later metamorphism		RADIOGENIC-87SR/87RB=0.00370	
5389	1	254.66	16		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	B-3817A	0.0000147*	666	14.9	0.68			T		Hurley and others (1960)	initial age disturbed by later metamorphism	UPGRADED CONCENTRATE	RADIOGENIC SR-87/RB-87=0.00369	
5390	1	378.88	28		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	B-3609A	0.0000147*	472	46.1	0.72			T		Hurley and others (1960)	age of intrusion		RADIOGENIC-87SR/87RB=0.00538	
5422	1	66.66	1	0.707	glauconite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	RP-4	0.0000139*	190.3	16.19		34.13	0.74	T		Harris (1976); Harris and Baum (1977)	age of sedimentation	"UNABRADED, MAMMILLAR TO LOBATE AUTHIGENIC GLAUCONITE PELLETS"	5-POINT MINERAL ISOCHRON; MODEL AGE IS 68.9 +/- 2.1 M.Y. BASED ON A 87SR/86SR INITIAL OF 0.70735	THE ANALYTICAL DATA FOR THIS ISOCHRON AGE AND RB-SR MODEL AGE HAS BEEN PUBLISHED BY HARRIS AND BAUM(1977)AND HARRIS(1976)
5423	1	70.68	12.6	0.70735	glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	NCF4-3	0.0000139*	196.64	99.39		5.73	0.7131	T			"sample contains inherited material, age is too old"			
5424	1	59.03	5.1	0.70735	glauconite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	PEN-1	0.0000139*	169.61	34.67		14.13	0.7192	T			initial age disturbed by weathering			
5453	1	351.43	11	0.7107	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MK 4-74	0.0000139*	159	574		0.711	0.222	T	205		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION	
5454	1	351.43	11	0.7107	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	S1-74	0.0000139*	157	84		0.7391	5.38	T	205		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPE DETERMINED BY ISOTOPE DILUTION	
5454	2	323.04	3	0.7144	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	S1-74	0.0000139*	157	84		0.7391	5.38	T	206				5-POINT WHOLE-ROCK ISOCHRON; RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION	THIS AGE MIGHT BY THE AGE OF INTRUSION
5455	1	351.43	11	0.7107	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	S2-74	0.0000139*	217	50		0.7735	12.7	T	205		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON. RB AND SR VALUES DETRMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION	
5455	2	323.04	3	0.7144	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	S2-74	0.0000139*	217	50		0.7735	12.7	T	206				5-POINT WHOLE-ROCK ISOCHRON; RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION	THIS MIGHT BY THE AGE OF INTRUSION
5456	1	351.43	11	0.7107	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MK 107-74	0.0000139*	198	38		0.7826	15.1	T	205		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION	
5456	2	323.04	3	0.7144	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MK 107-74	0.0000139*	198	38		0.7826	15.1	T	206				5-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION	THIS AGE MIGHT BE THE AGE OF INTRUSION
5457	1	351.43	11	0.7107	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MK1-74	0.0000139*	274	33		0.8286	24.6	T	205		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR VALUES DETERMINED BY ISOTOPE DILUTION	
5457	2	323.04	3	0.7144	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MK1-74	0.0000139*	274	33		0.8286	24.6	T	206				5-POINT WHOLE-ROCK ISOCHRON. RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION	THIS AGE MIGHT BE THE AGE OF INTRUSION
5458	1	351.43	11	0.7107	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MK108-74	0.0000139*	239	14.8		0.9321	47.6	T	205		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION	
5458	2	323.04	3	0.7144	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MK108-74	0.0000139*	239	14.8		0.9321	47.6	T	206				5-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION	THIS AGE MIGHT BE THE AGE OF INTRUSION
5459	1	396.45	78	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	S11-73	0.0000139*	67.6	1436		0.7044	0.136	T	207		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION	
5460	1	396.45	78	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M19-73	0.0000139*	148	253		0.7142	1.69	T	207		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5461	1	396.45	78	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M15-73	0.0000139*	81.5	207		0.716	1.14	T	207		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5462	1	396.45	78	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M16-73	0.0000139*	134.6	131.4		0.724	2.97	T	207		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5463	1	396.45	78	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M9-73	0.0000139*	184	124		0.7323	4.3	T	207		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5464	1	396.45	78	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	M10-73	0.0000139*	285	172		0.7354	4.82	T	207		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5465	1	396.45	78	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	S9-73	0.0000139*	243	87		0.7465	8.11	T	207		age of metamorphic crystallization		7-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5466	1				whole rock		MK37-73	0.0000139*	40.9	1164		0.7042	0.102	T					NO AGE CALCULATED.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5467	1	402.33	19	0.7107	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MK35-73	0.0000139*	43.6	144		0.7157	0.88	T	208		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5468	1	402.33	19	0.7107	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	S3-67	0.0000139*	108	204		0.7197	1.54	T	208		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON. RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5469	1	402.33	19	0.7107	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	S37-66	0.0000139*	130	192		0.7218	1.96	T	208		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5470	1	402.33	19	0.7107	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MK36-73	0.0000139*	127.6	123		0.7272	3.01	T	208		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5471	1	402.33	19	0.7107	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MK7-74	0.0000139*	93.2	59		0.7381	4.58	T	208		age of intrusion		5-POINT WHOLE-ROCK ISOCHRON. RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5472	1				whole rock		CO29-72	0.0000139*	9.5	321		0.7071	0.085	T					NO AGE CALCULATED. RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5473	1				whole rock		MK9-71	0.0000139*	56.5	283		0.7094	0.579	T					NO AGE CALCULATED.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5474	1				whole rock		MK37-74	0.0000139*	97	226		0.7162	1.24	T					NO AGE CALCULATED.  RB AND SR DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5475	1				whole rock		CO2-71	0.0000139*	86.3	146.5		0.717	1.71	T					NO AGE CALCULATED.  RB SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5476	1	393.52	5	0.7143	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MK3-71	0.0000139*	125	128		0.7302	2.84	T	209		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5477	1	393.52	5	0.7143	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	MK10-71	0.0000139*	222	110		0.7475	5.84	T	209		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5478	1	393.52	5	0.7143	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	HI91-72	0.0000139*	225	74.3		0.763	8.82	T	209		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5479	1	393.52	5	0.7143	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	HI1-71	0.0000139*	229	64		0.7734	10.46	T	209		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON.  RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE; SR ISOTOPES DETERMINED BY ISOTOPE DILUTION
5487	1	874.74	25		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-44B	0.0000147*	541	13	1.92			N			age of metamorphic crystallization		
5488	1	317.81	7		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-158B	0.0000147*	403	6.25	0.52			N			initial age disturbed by later metamorphism		SR=6.9 AND 5.6 PPM; RADIOGENIC 87SR=0.512 AND 0.524 PPM; RB=406 AND 400 PPM
5489	1	336.44	10		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-202B	0.0000147*	272	14	0.37			N			initial age disturbed by later metamorphism		
5493	1	350.93	10		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-440B	0.0000147*	686	5.7	0.97			N			initial age disturbed by later metamorphism		
5496	1	397.52	45		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-452M	0.0000147*	193	26.6	0.31			N			age of intrusion		
5498	1	503.11	15		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-60B	0.0000147*	472	26.5	0.96			N			initial age disturbed by later metamorphism		
5499	1	609.73	18		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-439B	0.0000147*	307	27.5	0.76			N			initial age disturbed by later metamorphism		
5500	1	464.8	13		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-422B	0.0000147*	718	15.9	1.35			N			initial age disturbed by later metamorphism		
5501	1	696.69	20		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-438B	0.0000147*	323.5	17.4	0.91			N			initial age disturbed by later metamorphism		RB=324 AND 323 PPM
5502	1	596.28	17		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-437B	0.0000147*	926	20.9	2.24			N			initial age disturbed by later metamorphism		
5507	1	847.83	25		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-450B	0.0000147*	562	12.9	1.94			N			age of metamorphic crystallization		
5508	1	336.44	10		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-49B	0.0000147*	286	3.5	0.39			N			initial age disturbed by later metamorphism		
5509	1	829.2	24		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-436B	0.0000147*	795	10	2.67			N			age of metamorphic crystallization		
5513	1	328.16	10		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-421B	0.0000147*	543	12.2	0.72			N			initial age disturbed by later metamorphism		
5517	1	371.64	11		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-451B	0.0000147*	375	6.9	0.56			N			minimum age of intrusion		
5523	1	1677.02		0.71	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	3	0.0000147*	652	24.2		78	2.596	T			"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"	HIGH PURITY MINERAL SEPARATE	
5525	1	1739.14		0.71	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	5	0.0000147*	772	8.29		269.4	7.471	T			age of later metamorphism	HIGH PURITY MINERAL SEPARATE	
5525	2				whole rock		5	0.0000147*	113	237		1.377	0.756	T					NO AGE CALCULATED; DATA FROM SIX WHOLE-ROCKS(GNEISSES) DO NOT FORM AN ISOCHRON
5526	1	1697.73		0.71	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	6	0.0000147*	511	16.8		87.9	2.86	T			age of later metamorphism	HIGH PURITY MINERAL SEPARATE	
5527	1	1666.67		0.71	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	7A	0.0000147*	446	25.3		51.1	1.936	T			age of later metamorphism		
5527	2				whole rock		7A	0.0000147*	60.1	609		0.2855	0.7144	T					NO AGE CALCULATED; DATA FROM SIX WHOLE-ROCKS(GNEISSES) DO NOT FORM AN ISOCHRON
5528	1	1708.08		0.71	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	7B	0.0000147*	292	45.4		18.65	1.169	T			age of later metamorphism		
5528	2				whole rock		7B	0.0000147*	65.6	380		0.501	0.7311	T					NO AGE CALCULATED; DATA FROM SIX WHOLE-ROCKS(GNEISSES) DO NOT FORM AN ISOCHRON
5532	1				whole rock		8	0.0000147*	14.9	154		0.28	0.725	T					NO AGE CALCULATED; DATA FROM SIX WHOLE-ROCKS(GNEISSES)DO NOT FORM AN ISOCHRON
5533	2				whole rock		9	0.0000147*	142	244		1.685	0.77	T					NO AGE CALCULATED; DATA FROM SIX WHOLE-ROCKS(GNEISSES)DO NOT FORM AN ISOCHRON
5534	1	1697.73		0.71	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	10	0.0000147*	791	16.3		140.1	4.135	T			"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"	HIGH PURITY MINERAL SEPARATE	
5534	2				whole rock		10	0.0000147*	121	258		1.361	0.764	T					NO AGE CALCULATED; DATA FROM SIX WHOLE-ROCK(GNEISSES)DO NOT FORM AN ISOCHRON
5536	1	1790.9		0.71	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	12	0.0000147*	616	5.42		328.9	9.2	T			initial age disturbed by later metamorphism	HIGH PURITY MINERAL SEPARATE	
5537	1	1532.1	30		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1	0.0000147*	558	12.6				N			minimum age of intrusion	PURITY GREATER THAN 99%	87SR(RADIOGENIC)/87RB=0.0232	
5537	2	1511.39	30	0.71	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1	0.0000147*	203	146				N			minimum age of intrusion		87SR(RADIOGENIC)/87RB=0.0218	
5538	1	1594.21	30		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	2	0.0000147*	1034	10.6				N			"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"	PURITY GREATER THAN 99%	87SR(RADIOGENIC)/87RB=0.0231	
5538	2	3188.42	60	0.71	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	2	0.0000147*	224	166				N			age of metamorphic crystallization		87SR(RADIOGENIC)/87RB=0.046	
5539	1	1532.1	30		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	3	0.0000147*	1170	15.2				N			initial age disturbed by later metamorphism	PURITY GREATER THAN 99%	87SR(RADIOGENIC)/87RB=0.0220	
5539	2	1532.1	30		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	3	0.0000147*	1172	7.37				N			initial age disturbed by later metamorphism	PURITY GREATER THAN 99%	87SR(RADIOGENIC)/87RB=0.0221	
5539	3	1521.74	30		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	3	0.0000147*	1177	12.4				N			initial age disturbed by later metamorphism		87SR(RADIOGENIC)/87RB=0.0219	
5541	1	1583.86		0.744	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	5	0.0000147*	461	8.54				N	210		initial age disturbed by later metamorphism	PURITY GREATER THAN 99%	4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
5541	2	1583.86		0.744	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	5	0.0000147*	172	33.2				N	210		initial age disturbed by later metamorphism		4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
5541	3	1583.86		0.744	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	5	0.0000147*	138	26.2				N	210		initial age disturbed by later metamorphism		4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
5542	1	1614.91	30		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	6	0.0000147*	323	4.55				N			"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"	PURITY GREATER THAN 99%	87SR(RADIOGENIC)/87RB=0.0233	
5542	2	1583.86		0.744	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	6	0.0000147*	323	4.55				N	210		initial age disturbed by later metamorphism		4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
5543	1	1583.86	30		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	7	0.0000147*	565	8.92				N			initial age disturbed by later metamorphism	PURITY GREATER THAN 99%	87SR(RADIOGENIC)/87RB=0.0227	
5544	1	1645.97	30		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8	0.0000147*	783	2.15				N			"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"	PURITY GREATER THAN 99%	87SR(RADIOGENIC)/87RB=0.0238	
5544	2	1677.02	30		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	8	0.0000147*	818	12.8				N			"minimum age of metamorphic crystallization, initial age disturbed by later metamorphism"	PURITY GREATER THAN 99%	87SR(RADIOGENIC)/87RB=0.0242	
5559	1	82.82	2		biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	23	0.0000147*	208	6.91				N				PURITY GREATER THAN 99%	AGE GIVEN IN TEXT AS LESS THAN 80 M.Y.; 87SR(RADIOGENIC)/87RB=0.0011	AGE POSSIBLY THE RESULT OF HEATING DURING INTRUSION OF SOME TERTIARY PLUTON
5602	1	309.33	6	0.7147	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1141	0.0000139*	257.4	35.11		21.44	0.80846	T	212		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON; ERROR IN INITAL 87SR/86SR RATIO= +/- 0.0022	
5603	1	290.73		0.7147	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1146	0.0000139*	384.3	32.07		35.22	0.86178	T			minimum age of intrusion			AGE BY 4-POINT ISOCHRON IS 316 M.Y.
5604	1	309.33	6	0.7147	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1147	0.0000139*	281.8	34.11		24.19	0.82175	T	212		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON; ERROR IN INITIAL 87SR/86SR RATIO = +/- 0.0022	
5605	1	309.33	6	0.7147	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1148	0.0000139*	314.8	28.44		32.52	0.85776	T	212		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON; ERROR IN INITIAL 87SR/86SR RATIO= +/- 0.0022	
5606	1	309.33	6	0.7147	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1149	0.0000139*	264.8	35.86		21.6	0.81024	T	212		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON; ERROR IN INITIAL 87SR/86SR = +/- 0.0022	
5607	1	402.33	6	0.7032	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	A-2	0.0000139*	95.7	3.35		86.7	1.197	T	213		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	
5608	1	402.33	6	0.7032	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	C-2	0.0000139*	147.2	55.4		7.72	0.7468	T	213		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	
5609	1	402.33	6	0.7032	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D-3	0.0000139*	65.7	8.44		22.8	0.8341	T	213		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	
5610	1	402.33	6	0.7032	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	F-3	0.0000139*	80.6	4.74		50.7	0.9979	T	213		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	
5611	1	402.33	6	0.7032	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	G-6	0.0000139*	83.3	192		1.26	0.7117	T	213		age of intrusion		87SR/86SR BASED UPON UNSPIKED ISOTOPIC ANALYSIS; 7-POINT WHOLE-ROCK ISOCHRON	
5612	1	402.33	6	0.7032	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	I-1	0.0000139*	73.5	120		1.78	0.7135	T	213		age of intrusion		RB=73.6 AND 73.4 PPM; SR=120 AND 119 PPM; 87SR/86SR=0.7137 AND 0.7132; 7-POINT WHOLE-ROCK ISOCHRON	
5613	1	402.33	6	0.7032	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	I-2	0.0000139*	85.8	63.8		3.9	0.7239	T	213		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	
5619	1	605.59	40	0.706	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	WELL NO. 4	0.0000147*	214.76	45.42	0.53	13.65	0.8245	N			minimum age of intrusion		AGE CALCULATED BY COMPILER--588 M.Y.	
5619	2	538.3	30	0.706	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	WELL NO. 4	0.0000147*	438.01	47.56	0.96	26.58	0.9117	N			initial age disturbed by later metamorphism		AGE CALCULATED BY COMPILER--524 M.Y.	
5619	3	471.02	40		whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	WELL NO. 4	0.0000147*	214.76	45.42	0.53	13.65	0.8245	N			age of metamorphic crystallization		2-POINT MUSCOVITE-WHOLE-ROCK ISOCHRON	
5619	4	471.02	40		muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	WELL NO. 4	0.0000147*	438.01	47.56	0.96	26.58	0.9117	N			age of metamorphic crystallization		2-POINT MUSCOVITE-WHOLE-ROCK ISOCHRON	
5620	1	631.47	60	0.706	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	WELL NO. 9	0.0000147*	155.08	52.71	0.4	8.49	0.7827	N					AGE CALCULATED BY COMPILER--612 M.Y.	NEARLY CONCORDANT WHOLE-ROCK AND MUSCOVITE AGES SUGGEST AGE APPROXIMATES TIME OF INTRUSION--COMPILER
5620	2	610.77	30	0.706	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	WELL NO.9	0.0000147*	558.72	21.32	1.38	75.63	1.3697	N					AGE CALCULATED BY COMPILER--594 M.Y.	MAY BE APPROXIMATE TIME OF EMPLACEMENT
5621	1	422.36	40	0.706	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	WELL NO. 2	0.0000147*	163.64	52.98	0.28	8.92	0.7599	N			age meaning uncertain (geologic factors)		AGE CALCULATED BY COMPILER--410 M.Y.	MAY BE A COOLING AGE
5664	1	440.51	42	0.7156	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	19-400	0.0000139*	205	239		2.5	0.7318	T	214				7-POINT WHOLE-ROCK ISOCHRON	AGE OF METAMORPHISM AND/OR MINERALIZATION
5665	1	440.51	42	0.7156	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	19-514	0.0000139*	148	225		1.91	0.727	T	214				7-POINT WHOLE-ROCK ISOCHRON	AGE OF METAMORPHISM AND/OR MINERALIZATION
5665	2	352.4		0.715	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	19-514	0.0000139*	514	9.73		175	1.5869	T						A COOLING AGE
5666	1	440.51	42	0.7156	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	19-556	0.0000139*	55.9	216		0.75	0.7212	T	214				7-POINT WHOLE-ROCK ISOCHRON	AGE OF METAMORPHISM AND/OR MINERALIZATION
5667	1	440.51	42	0.7156	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	19-630	0.0000139*	176	119		4.3	0.7411	T	214				7-POINT WHOLE-ROCK ISOCHRON	AGE OF METAMORPHISM AND/OR MINERALIZATION
5668	1	440.51	42	0.715	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	22-513	0.0000139*	138	232		1.72	0.7248	T	214				7-POINT WHOLE-ROCK ISOCHRON; RB=141 AND 135 PPM; SR=234 AND 230 PPM; 87SR/86SR=0.7255 AND 0.7242	AGE OF METAMORPHISM AND/OR MINERALIZATION
5669	1	440.51	42	0.7156	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	22-915	0.0000139*	94.3	195		1.39	0.7232	T	214				7-POINT WHOLE-ROCK ISOCHRON; 87SR/86SR=0.7221 AND 0.7242	AGE OF METAMORPHISM AND/OR MINERALIZATION
5669	2	323.04		0.715	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	22-915	0.0000139*	385	6.32		191.7	1.589	T						A COOLING AGE
5670	1	440.51	42	0.7156	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	22-1107-8	0.0000139*	124	130		2.76	0.7341	T	214				7-POINT WHOLE-ROCK ISOCHRON; 87SR/86SR=0.7349 AND 0.7333	AGE OF METAMORPHISM AND/OR MINERALIZATION
5671	1	382.75	9	0.7132	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	22-1013	0.0000139*	67.5	11.5		17.13	0.8045	T	215				5-POINT WHOLE-ROCK ISOCHRON	MINIMUM AGE OF METAMORPHISM AND/OR MINERALIZATION
5672	1	382.75	9	0.7132	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	26-1210	0.0000139*	63.4	31.8		5.78	0.7427	T	215				5-POINT WHOLE-ROCK ISOCHRON	APPROXIMATE AGE OF METAMORPHISM AND/OR MINERALIZATION
5672	2	572.66		0.715	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	26-1210	0.0000139*	313	4.82		220.6	2.507	T						AGE IS ANOMOLOUSLY OLD
5673	1	382.75	9	0.7132	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	26-1220	0.0000139*	31.1	165		0.55	0.7172	T	215				5-POINT WHOLE-ROCK ISOCHRON	APPROXIMATE AGE OF METAMORPHISM AND/OR MINERALIZATION
5674	1	382.75	9	0.7132	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	26-1230	0.0000139*	72.3	134		1.57	0.7224	T	215				5-POINT WHOLE-ROCK ISOCHRON; RB=73.6 AND 70.9 PPM	APPROXIMATE AGE OF METAMORPHISM AND/OR MINERALIZATION
5674	2	293.67		0.715	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	26-1230	0.0000139*	381	3.65		345	2.1502	T						A COOLING AGE
5675	1	382.75	9	0.7132	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	27-1221	0.0000139*	163	29.1		16.39	0.8045	T	215				5-POINT WHOLE-ROCK ISOHRON	APPROXIMATE AGE OF METAMORPHISM AND/OR MINERALIZATION
5676	1	318.14		0.715	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	19-90	0.0000139*	449	11.6		117.8	1.2463	T						A COOLING AGE
5677	1	318.14		0.715	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	22-1028	0.0000139*	372	2.82		459.6	2.7885	T						A COOLING AGE
5678	1	320.91			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	1	0.0000147*	438	8.2	0.56			N					87SR(RADIOGENIC)/87RB=0.00459	A COOLING AGE
5679	1	331.26			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	2	0.0000147*	305	34	0.4			N					87SR(RADIOGENIC)/87RB=0.00469	A COOLING AGE
5680	1	331.26			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	3	0.0000147*	286	7.9	0.37			N					87SR(RADIOGENIC)/87RB=0.00469	A COOLING AGE
5681	1	331.26			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	4	0.0000147*	212	4	0.28			N					87SR(RADIOGENIC)/87RB=0.00469	"AGE IS SIGNIFICANTLY YOUNGER THAN K-AR AGE ON THE SAME SAMPLE, PROBABLY A COOLING AGE"
5683	1	347.51			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	M-51	0.0000139*	460		0.64						initial age disturbed by later metamorphism			A COOLING AGE
5685	1	792.91			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-19	0.0000139*	636		2						initial age disturbed by later metamorphism			
5686	1	342.61			muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-55	0.0000139*	1139		1.62						minimum age of intrusion			RB-SR MUSCOVITE AND BIOTITE AGES ARE DISCORDANT
5686	2	367.09			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-55	0.0000139*	744		0.99						age of intrusion			RB-SR MUSCOVITE AND BIOTITE ARE ARE DISCORDANT
5687	1	244.73			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-56	0.0000139*	460		0.44									AGE PROBABLY REPRESENTS TIME OF COOLING FOLLOWING METAMORPHISM
5688	1	342.61			biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	G-5	0.0000139*	1071		1.3									PROBABLY A COOLING AGE
5707	1	314.23	17	0.7113	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	6M	0.0000139*	381.2	14.89	0.48	74.04	1.0405	N				BROWNISH MICA	"% RADIOGENIC 87SR, 87RB/86SR, 87SR/86SR, AND INITIAL 87SR/86SR CALCULATED BY COMPILER"	PROBABLY A COOLING AGE
5708	1	270.18	15	0.7113	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	7M	0.0000139*	514.3	10.37	0.56	143.4	1.2628	N				BROWNISH MICA	"% RADIOGENIC 87SR, 87RB/86SR, 87SR/86SR, AND INITIAL 87SR/86SR CALCULATED BY COMPILER"	PROBABLY A COOLING AGE
5709	1	326.95	17	0.7113	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	9M	0.0000139*	432.8	8.6	0.57	145.5	1.3882	N				GREENISH MICA	"% RADIOGENIC 87SR, 87RB/86SR, 87SR/86SR, AND INITIAL 87SR/86SR CALCULATED BY COMPILER"	PROBABLY A COOLING AGE
5710	1	310.31	15	0.7113	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	10M	0.0000139*	616.1	4.35	0.77	409.6	2.5191	N				RUBY MICA	"% RADIOGENIC 87SR, 87RB/86SR, 87SR/86SR, AND INITIAL 87SR/86SR CALCULATED BY COMPILER"	PROBABLY A COOLING AGE
5711	1	321.08	18	0.7113	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	11M	0.0000139*	355.1	18.72	0.46	54.86	0.9622	N				GREENISH MICA	"87RB/86SR, 87SR/86SR, AND INITIAL 87SR/86SR CALCULATED BY COMPILER"	PROBABLY A COOLING AGE
5712	1	340.66	17	0.7113	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	12M	0.0000139*	610.8	6.11	0.84	289.1	2.1154	N				GREENISH MICA	"% RADIOGENIC 87SR, 87RB/86SR, 87SR/86SR, AND INITIAL 87SR/86SR CALCULATED BY COMPILER"	POSSIBLY A MINIMUM AGE OF EMPLACEMENT
5713	1	332.83	20	0.7113	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	13M	0.0000139*	343.9	45.42	0.46	21.89	0.8147	N			minimum age of intrusion	BROWNISH MICA	"% RADIOGENIC 87SR, 87RB/86SR, 87SR/86SR, AND INITIAL 87SR/86SR CALCULATED BY COMPILER"	
5713	2	304.44	16	0.7113	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	13B	0.0000139*	531	8.71	0.65	176.3	1.4735	N					"% RADIOGENIC 87SR, 87RB/86SR, 87SR/86SR, AND INITIAL 87SR/86SR CALCULATED BY COMPILER"	PROBABLY A COOLING AGE
5714	1	501.2	28	0.7113	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	16M	0.0000139*	262.1	47.91	0.53	15.82	0.8242	N			maximum age of intrusion	BROWNISH MICA	"% RADIOGENIC 87SR, 87RB/86SR, 87SR/86SR, AND INITIAL 87SR/86SR CALCULATED BY COMPILER"	AGE MAY BE TOO OLD DUE TO USING AN INCORRECT INITIAL 87SR/86SR RATIO
5714	2	286.82	15	0.7113	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	16B	0.0000139*	449.8	3.42	0.52	380.4	2.2642	N					"% RADIOGENIC 87SR, 87RB/86SR, 87SR/86SR, AND INITIAL 87SR/86SR CALCULATED BY COMPILER"	PROBABLY A COOLING AGE
5715	1	497.28	27	0.7113	muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	18M	0.0000139*	197.3	39.37	0.4	14.49	0.815	N			maximum age of intrusion	BROWNISH MICA WITH ZIRCON AND BROOKITE INCLUSIONS	"% RADIOGENIC 87SR, 87RB/86SR, 87SR/86SR, AND INITIAL 87SR/86SR CALCULATED BY COMPILER"	AGE MAY BE TOO OLD DUE TO THE INITIAL RATIO USED--COMPILER
5715	2	250.6	14	0.7113	biotite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	18B	0.0000139*	330.9	9.88	0.33	96.86	1.0524	N					"% RADIOGENIC 87SR, 87RB/86SR, 87SR/86SR, AND INITIAL 87SR/86SR CALCULATED BY COMPILER"	PROBABLY A COOLING AGE
5726	1	393.52	98	0.7176	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	506	0.0000139*	57.81	248.3		0.68	0.7215	T	225				4-POINT WHOLE-ROCK ISOCHRON	POSSIBLE AGE OF SR ISOTOPIC HOMOGENIZATION ASSOCIATED WITH METAMORPHISM
5727	1	393.52	98	0.7176	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	898	0.0000139*	79.38	227.4		1.01	0.7223	T	225				4-POINT WHOLE-ROCK ISOCHRON	POSSIBLE AGE OF SR ISOTOPIC HOMOGENIZATION ASSOCIATED WITH METAMORPHISM
5728	1	393.52	98	0.7176	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	901	0.0000139*	92.63	186.7		1.44	0.726	T	225				4-POINT WHOLE-ROCK ISOCHRON	POSSIBLE AGE OF SR ISOTOPIC HOMOGENIZATION ASSOCIATED WITH METAMORPHISM
5729	1	393.52	98	0.7176	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	902	0.0000139*	59.08	215.8		0.79	0.7225	T	225				4-POINT WHOLE-ROCK ISOCHRON	POSSIBLE AGE OF SR ISOTOPIC HOMOGENIZATION ASSOCIATED WITH METAMORPHISM
5730	1	363.17	17	0.7289	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	696	0.0000139*	46.97	187.5		0.73	0.7328	T	224				5-POINT WHOLE-ROCK ISOCHRON	POSSIBLE AGE OF SR ISOTOPIC HOMOGENIZATION ASSOCIATED WITH METAMORPHISM
5731	1	363.17	17	0.7289	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	698	0.0000139*	128.4	127.6		2.92	0.7435	T	224				5-POINT WHOLE-ROCK ISOCHRON	POSSIBLE AGE OF SR ISOTOPIC HOMOGENIZATION ASSOCIATED WITH METAMORPHISM
5732	1	363.17	17	0.7289	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	699	0.0000139*	136.3	189.7		2.09	0.7393	T	224				5-POINT WHOLE-ROCK ISOCHRON	POSSIBLE AGE OF SR ISOTOPIC HOMOGENIZATION ASSOCIATED WITH METAMORPHISM
5733	1	363.17	17	0.7289	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	905	0.0000139*	57.49	209		0.8	0.733	T	224				5-POINT WHOLE-ROCK ISOCHRON	POSSIBLE AGE OF ISOTOPIC HOMOGENIZATION ASSOCIATED WITH METAMORPHISM
5734	1	363.17	17	0.7289	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	906	0.0000139*	141.9	134.7		3.06	0.7454	T	224				5-POINT WHOLE-ROCK ISOCHRON	POSSIBLE AGE OF ISOTOPIC HOMOGENIZATION ASSOCIATED WITH METAMORPHISM
5734	2	310.31		0.732	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	906B	0.0000139*	560	24.86		67.29	1.0291	T			"minimum age of metamorphic crystallization, age of uplift and cooling"	BIOTITE IS 99% PURE	2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	
5734	3	328.16		0.732	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	906	0.0000147*	141.9	134.7		3.06	0.7454	T			"minimum age of metamorphic crystallization, age of uplift and cooling"		2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	
5735	1	1225.58	45	0.7043	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	43	0.0000139*	100	223		1.28	0.7276	T	218				4-POINT WHOLE-ROCK ISOCHRON	A PRIMARY AGE FOR THE CRANBERRY GNEISS OF THIS AREA
5736	1	1225.58	45	0.7043	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	61	0.0000139*	45.2	424		0.3	0.7095	T	218				"DUPLICATE RB AND SR ANALYSES:  RB=45.2, 45.3 PPM; SR=424, 424 PPM, 87SR/86SR=0.7095, 0.7096; 4-POINT WHOLE-ROCK ISOCHRON"	A PRIMARY AGE FOR THE CRANBERRY GNEISS OF THIS AREA
5737	1	1225.58	45	0.7043	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	62	0.0000139*	135.8	441		0.86	0.7192	T	218				4-POINT WHOLE-ROCK ISOCHRON	A PRIMARY AGE FOR THE CRANBERRY GNEISS OF THIS AREA
5738	1	1225.58	45	0.7043	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	64	0.0000139*	162	263		1.77	0.7349	T	218				4-POINT WHOLE-ROCK ISOCHRON	A PRIMARY AGE FOR THE CRANBERRY GNEISS OF THIS AREA
5739	1	1040.57	41	0.7075	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	37	0.0000139*	167	304		1.57	0.7293	T	219				7-POINT WHOLE-ROCK ISOCHRON	A PRIMARY AGE FOR THE CRANBERRY GNEISS OF THIS AREA
5740	1	1040.57	41	0.7075	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	38	0.0000139*	142	202		2	0.7382	T	219				7-POINT WHOLE-ROCK ISOCHRON	A PRIMARY AGE FOR THE CRANBERRY GNEISS OF THIS AREA
5741	1	1040.57	41	0.7075	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	39	0.0000139*	158	159		2.88	0.7505	T	219				7-POINT WHOLE-ROCK ISOCHRON	A PRIMARY AGE FOR THE CRANBERRY GNEISS OF THIS AREA
5742	1	1040.57	41	0.7075	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	46	0.0000139*	86	350		0.71	0.7185	T	219				7-POINT WHOLE-ROCK ISOCHRON	A PRIMARY AGE FOR THE CRANBERRY GNEISS OF THIS AREA
5743	1	1040.57	41	0.7075	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	47	0.0000139*	138	530		0.74	0.7195	T	219				7-POINT WHOLE-ROCK ISOCHRON	A PRIMARY AGE FOR THE CRANBERRY GNEISS OF THIS AREA
5744	1	1040.57	41	0.7075	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	48	0.0000139*	140	448		0.89	0.7198	T	219				7-POINT WHOLE-ROCK ISOCHRON	A PRIMARY AGE FOR THE CRANBERRY GNEISS OF THIS AREA
5745	1	1040.57	41	0.7075	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	67	0.0000139*	164	263		1.79	0.7345	T	219				7-POINT WHOLE-ROCK ISOCHRON	A PRIMARY AGE FOR THE CRANBERRY GNEISS OF THIS AREA
5746	1	852.62	17	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	91	0.0000139*	116	422		0.78	0.7166	T	220				4-POINT WHOLE-ROCK ISOCHRON	THE SIGNIFICANCE OF THIS AGE IS NOT KNOWN
5747	1	852.62	17	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	92	0.0000139*	103	368		0.8	0.7186	T	220				4-POINT WHOLE-ROCK ISOCHRON	THE SIGNIFICANCE OF THIS AGE IS NOT KNOWN
5748	1	852.62	17	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	93	0.0000139*	231	81.4		8.14	0.8089	T	220				4-POINT WHOLE-ROCK ISOCHRON	THE SIGNIFICANCE OF THIS AGE IS NOT KNOWN
5749	1	852.62	17	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	94	0.0000139*	244	70.05		10	0.828	T	220				"4-POINT WHOLE-ROCK ISOCHRON; RB AND SR DETERMINED TWICE RB=245, 243 PPM; SR=70.3, 69.8 PPM; 87RB/86SR=10.01, 9.99; 87SR/86SR=0.8287, 0.8273"	THE SIGNIFICANCE OF THIS AGE IS NOT KNOWN
5750	1				whole rock		96	0.0000139*	216.5	92.05		6.75	0.7988	T					"NO AGE CALCULATED; RB AND SR DETERMINED TWICE RB=217, 216 PPM; SR=92.3, 91.8 PPM; 87RB/86SR=6.76, 6.74; 87SR/86SR=0.7988, 0.7988"	THE DATA DOES NOT PLOT ON AN ISOCHRON; ISOTOPIC SYSTEM HAS BEEN DISTURBED
5751	1	1005.33	36	0.7077	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	13	0.0000139*	163	256		1.83	0.7339	T	221				4-POINT WHOLE-ROCK ISOCHRON	A PRIMARY AGE FOR THIS GNEISS
5752	1	1005.33	36	0.7077	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	12	0.0000139*	167	204		2.34	0.7417	T	221				4-POINT WHOLE-ROCK ISOCHRON	A PRIMARY AGE FOR THIS GNEISS
5753	1	1005.33	36	0.7077	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	30	0.0000139*	109	422		0.73	0.7174	T	221				4-POINT WHOLE-ROCK ISOCHRON	A PRIMARY AGE FOR THIS GNEISS
5753	2	317.16			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	30	0.0000139*	109	422		0.73	0.7174	T	222				2-POINT WHOLE-ROCK ISOCHRON	POSSIBLE TIME OF RECRYSTALLIZATION AND METASOMATISM ASSOCIATED WITH MYLONITIZATION AND RETROGRESSIVE METAMORPHISM
5754	1	317.16			whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	31	0.0000139*	269	80.6		9.6	0.7572	T	222				2-POINT WHOLE-ROCK ISOCHRON	POSSIBLE TIME OF RECRYSTALLIZATION AND METASOMATISM ASSOCIATED WITH MYLONITIZATION AND RETROGRESSIVE METAMORPHISM
5755	1	1005.33	36	0.7077	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	32	0.0000139*	44.7	418		0.304	0.7127	T	221				4-POINT WHOLE-ROCK ISOCHRON	A PRIMARY AGE FOR THIS GNEISS
5756	1	1020.99		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	6	0.0000139*	139	167		2.37	0.7396	T						DATA FROM 4 WHOLE-ROCK SAMPLES SUGGEST A PRIMARY AGE OF ABOUT 1170 M.Y.
5757	1	1069.94		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	10	0.0000139*	259	161		4.62	0.7757	T						DATA FROM 4 WHOLE-ROCK SAMPLES SUGGEST A PRIMARY AGE OF ABOUT 1170 M.Y.
5758	1	1020.99		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	27	0.0000139*	276	29.9		26.96	1.0987	T			age of intrusion			MODEL AGE IS SIGNIFICANTLY YOUNGER THAN OTHER SAMPLES FROM THE SAME UNIT; 4 OTHER SAMPLES SUGGEST A PRIMARY AGE OF ABOUT 1170 M.Y.
5759	1	1194.26		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	28	0.0000139*	223	70.9		9.07	0.8601	T						DATA FROM 4 WHOLE-ROCK SAMPLES SUGGEST A PRIMARY AGE OF ABOUT 1170 M.Y.
5760	1	1098.33		0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	29	0.0000139*	229	70.4		9.39	0.8526	T						DATA FROM FOUR WHOLE-ROCK SAMPLES SUGGEST A PRIMARY AGE OF ABOUT 1170 M.Y.
5761	1				whole rock		NC-264A	0.0000139*	111	220		1.44	0.757	T					NO AGE CALCULATED	
5762	1				whole rock		NC-264B	0.0000139*	88.6	302		0.84	0.7268	T					NO AGE CALCULATED	
5763	1				whole rock		1063	0.0000139*	206	420		1.4	0.736	T					NO AGE CALCULATED	
5764	1				whole rock		1066	0.0000139*	171	486		1	0.7256	T					NO AGE CALCULATED	
5765	1				whole rock		1069	0.0000139*	83	376		0.63	0.7265	T					NO AGE CALCULATED	
5766	1	1149.23	14	0.7044	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	481	0.0000139*	107	589		0.53	0.7132	T	223				6-POINT WHOLE-ROCK ISOCHRON	A PRIMARY AGE FOR THE GRAYSON GNEISS.  THIS AGE SUPERSEDES THE AGE OF 1320 M.Y. REPORTED FOR THE GRAYSON GNEISS BY DIETRICH AND OTHERS (1969)
5767	1	1149.23	14	0.7044	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	484	0.0000139*	188	142		3.84	0.7673	T	223				6-POINT WHOLE-ROCK ISOCHRON	A PRIMARY AGE FOR THE GRAYSON GNEISS.  THIS AGE SUPERSEDES THE AGE OF 1320 M.Y. REPORTED FOR THE GRAYSON GNEISS BY DIETRICH AND OTHERS (1969)
5768	1				whole rock		485	0.0000139*	112	145		2.25	0.7475	T					NO AGE CALCULATED; 87SR/86SR=0.7478 AND 0.7472	DATA FROM 6 WHOLE-ROCK SAMPLES DO NOT DEFINE AN ISOCHRON PRESUMABLY BECAUSE THE RB-SR ISOTOPIC SYSTEM WAS NOT COMPLETELY EQUILIBRATED DURING METAMORPHISM; INITIAL ROCK WAS PROBABLY A SEDIMENT
5769	1				whole rock		486	0.0000139*	77.7	334		0.67	0.7179	T					NO AGE CALCULATED; 87SR/86SR=0.7178 AND 0.7180	DATA FROM 6 WHOLE-ROCK SAMPLES DO NOT DEFINE AN ISOCHRON PRESUMABLY BECAUSE THE RB-SR ISOTOPIC SYSTEM WAS NOT COMPLETELY EQUILIBRATED DURING METAMORPHISM; THE INITIAL ROCK WAS PROBABLY A SEDIMENT
5770	1				whole rock		818	0.0000139*	125	150		2.43	0.7499	T					NO AGE CALCULATED	DATA FROM 6 WHOLE-ROCK SAMPLES DO NOT DEFINE AN ISOCHRON PRESUMABLY BECAUSE THE RB-SR ISOTOPIC SYSTEM WAS NOT COMPLETELY EQUILIBRATED DURING METAMORPHISM; THE INITIAL ROCK WAS PROBABLY A SEDIMENT
5771	1				whole rock		821	0.0000139*	110	175		1.84	0.7343	T					NO AGE CALCULATED	DATA FROM 6 WHOLE-ROCK SAMPLES DO NOT DEFINE AN ISOCHRON PRESUMABLY BECAUSE THE RB-SR ISOTOPIC SYSTEM WAS NOT COMPLETELY EQUILIBRATED DURING METAMORPHISM; THE INITIAL ROCK WAS PROBABLY A SEDIMENT
5772	1				whole rock		823	0.0000139*	142.5	204.5		2.025	0.738	T					"NO AGE CALCULATED; RB AND SR DETERMINED TWICE--RB=142, 143 PPM; SR=204, 205 PPM; 87RB/86SR=2.02, 2.03; 87SR/86SR=0.7386, 0.7375"	DATA FROM 6 WHOLE-ROCK SAMPLES DID NOT DEFINE AN ISOCHRON PRESUMABLY BECAUSE THE RB-SR ISOTOPIC SYSTEM WAS NOT COMPLETELY EQUILIBRATED DURING METAMORPHISM; THE INITIAL ROCK WAS PROBABLY A SEDIMENT
5773	1				whole rock		825	0.0000139*	81.1	260		0.91	0.7253	T					NO AGE CALCULATED	DATA FROM 6 WHOLE-ROCK SAMPLES DO NOT DEFINE AN ISOCHRON PRESUMABLY BECAUSE THE RB-SR ISOTOPIC SYSTEM WAS NOT COMPLETELY EQUILIBRATED DURING METAMORPHISM; THE INITIAL ROCK WAS PROBABLY A SEDIMENT
5775	1	355.07	10		muscovite	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	L-59M	0.0000147*	557	16.6	0.8			N			minimum age of intrusion			
5776	1	368			whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	1-WR	1.42E-05	118	105.1		3.25	0.73298	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	POSSIBLY A COOLING AGE.  A RB-SR (5-MINERAL)-WHOLE-ROCK PLOT FOR THIS SAMPLE SUGGESTS A 440 M.Y. METAMORPHIC EVENT
5776	2	368			biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	1-BIO	1.42E-05	727.9	5.92		356	2.5752	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	POSSIBLY A COOLING AGE
5776	3				K feldspar		1-KF	0.0000147*	296.9	177.5		4.84	0.74232	T					NO AGE CALCULATED	
5776	4				plagioclase		1-PC	0.0000147*	14.29	118.8		0.348	0.7164	T					NO AGE CALCULATED	
5776	5				pyroxene		1-OPX	0.0000147*	1.56	3.84		1.17	0.7188	T					NO AGE CALCULATED	
5777	1	398			biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	1-BIO	1.42E-05	726.1	5.92		354	2.7174	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	POSSIBLY A COOLING AGE.  A RB-SR (5-MINERAL)-WHOLE-ROCK PLOT FOR THIS SAMPLE SUGGESTS A 440 M.Y. METAMORPHIC EVENT
5777	2	398			whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	1-WR	1.42E-05	118	105.1		3.25	0.73298	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	POSSIBLY A COOLING AGE
5777	3				biotite		1-BIO	0.0000147*		5.39			2.7275	T					NO AGE CALCULATED	
5777	4				pyroxene		1-OPX	0.0000147*	1.57	1.87		1.17	0.71835	T					NO AGE CALCULATED	
5777	5				apatite		1-AP	0.0000147*	1.41	68.69		0.0592	0.71634	T					NO AGE CALCULATED	
5778	1	502	20	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2-WR	1.42E-05	144.5	249.7		1.68	0.71829	T	193		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	A RB-SR (5-MINERAL)-WHOLE-ROCK PLOT FOR SAMPLE 1-WR SUGGESTS A METAMORPHIC EVENT ABOUT 440 M.Y. AGO
5779	1	502	20	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	3-WR	1.42E-05	130	75.04		5.02	0.7432	T	193		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	A RB-SR (5-MINERAL)-WHOLE-ROCK PLOT FOR SAMPLE 1-WR SUGGESTS A METAMORPHIC EVENT ABOUT 440 M.Y. AGO
5780	1	502	20	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	4-WR	1.42E-05	77.19	73.58		3.04	0.72811	T	193		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	A RB-SR (5-MINERAL)-WHOLE-ROCK PLOT FOR SAMPLE 1-WR SUGGESTS A METAMORPHIC EVENT ABOUT 440 M.Y. AGO
5781	1	502	20	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	5-WR	1.42E-05	27.86	290.1		0.278	0.70928	T	193		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	A RB-SR (5-MINERAL)-WHOLE-ROCK PLOT FOR SAMPLE 1-WR SUGGESTS A METAMORPHIC EVENT ABOUT 440 M.Y. AGO
5781	2	368			biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	5-BIO	1.42E-05	284.8	13.01		63.3	1.0387	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	POSSIBLY A COOLING AGE
5781	3	379.92			biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	5-BIO	0.0000147*	274.7	12.83		62	1.031	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	POSSIBLY A COOLING AGE
5782	1	502	20	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	6-WR	1.42E-05	26.27	425.7		0.179	0.70781	T	193		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	A RB-SR (5-MINERAL)-WHOLE-ROCK PLOT FOR SAMPLE 1-WR SUGGESTS A METAMORPHIC EVENT ABOUT 440 M.Y. AGO
5783	1	502	20	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	7-WR	1.42E-05	16.09	342.5		0.136	0.70725	T	193		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	A RB-SR (5-MINERAL)-WHOLE-ROCK PLOT FOR SAMPLE 1-WR SUGGESTS A METAMORPHIC EVENT ABOUT 440 M.Y. AGO
5784	1	502	20	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	8-WR	1.42E-05	2.76	395		0.0202	0.70673	T	193		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	A RB-SR (5-MINERAL)-WHOLE-ROCK PLOT FOR SAMPLE 1-WR SUGGESTS A METAMORPHIC EVENT ABOUT 440 M.Y. AGO
5785	1	502	20	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	9-WR	1.42E-05	24.48	352.75		0.2005	0.7074	T	193		age of intrusion		"12-POINT WHOLE-ROCK ISOCHRON; RB=24.41, 24.55 PPM; SR=354.6, 350.9 PPM; 87RB/86SR=0.199, 0.202"	A RB-SR (5-MINERAL)-WHOLE-ROCK PLOT FOR SAMPLE 1-WR SUGGESTS A METAMORPHIC EVENT ABOUT 440 M.Y. AGO
5786	1	502	20	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	10B-WR	1.42E-05	34.3	292.6		0.339	0.70937	T	193		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	A RB-SR (5-MINERAL)-WHOLE-ROCK PLOT FOR SAMPLE 1-WR SUGGESTS A METAMORPHIC EVENT ABOUT 440 M.Y. AGO
5787	1	502	20	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	11-WR	1.42E-05	113.6	125.8		2.615	0.7245	T	193		age of intrusion		"12-POINT WHOLE-ROCK ISOCHRON; SR=124.8, 126.8; 87RB/86SR=2.59, 2.64; 87SR/86SR=0.72435, 0.7246"	A RB-SR (5-MINERAL)-WHOLE-ROCK PLOT FOR SAMPLE 1-WR SUGGESTS A METAMORPHIC EVENT ABOUT 440 M.Y. AGO
5788	1	502	20	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	12-WR	1.42E-05	12.47	384.8		0.09385	0.7072	T	193		age of intrusion		"12-POINT WHOLE-ROCK ISOCHRON; RB=12.54, 12.41; SR=382.6, 387.0; 87RB/86SR=0.0949, 0.0928; 87SR/86SR=0.70743, 0.70724"	A RB-SR (5-MINERAL)-WHOLE-ROCK PLOT FOR SAMPLE 1-WR SUGGESTS A METAMORPHIC EVENT ABOUT 440 M.Y. AGO
5789	1	502	20	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	13-WR	1.42E-05	44.43	230.4		0.558	0.71079	T	193		age of intrusion		12-POINT WHOLE-ROCK ISOCHRON	A RB-SR (5-MINERAL)-WHOLE-ROCK PLOT FOR SAMPLE 1-WR SUGGESTS A METAMORPHIC EVENT ABOUT 440 M.Y. AGO
5790	1	335			whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	BG1-WR	1.42E-05	1.66	157.7		0.0305	0.71149	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	POSSIBLY A COOLING AGE
5790	2	335			biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	BG1-BIO	1.42E-05	103.1	24.82		12	0.76822	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	POSSIBLY A COOLING AGE
5790	3	351.97			biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	BG1-BIO	0.0000147*	101.6	24.06		12.2	0.77031	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	POSSIBLY A COOLING AGE
5790	4	351.97			whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	BG1-WR	0.0000147*	1.66	157.7		0.0305	0.71149	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	POSSIBLY A COOLING AGE
5791	1	404.29	21	0.7038	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	CRD-20	0.0000139*	40.2	49.9		2.34	0.7174	T	228		age of intrusion		3-POINT WHOLE-ROCK ISOCHRON	
5792	1	404.29	21	0.7038	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NC-140	0.0000139*	18.4	361		0.15	0.7051	T	228		age of intrusion		3-POINT WHOLE-ROCK ISOCHRON	
5793	1	404.29	21	0.7038	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NC-142	0.0000139*	22.3	134		0.48	0.7064	T	228		age of intrusion		3-POINT WHOLE-ROCK ISOCHRON	
5794	1	508.05	48	0.7034	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	F-11	0.0000139*	57.8	182		0.92	0.7097	T	229		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	AGE CALCULATION ASSUMES BOTH EAST AND WEST FARRINGTON PLUTONS ARE CONSANGUINEOUS
5795	1	508.05	48	0.7034	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	F-15	0.0000139*	63.8	227		0.81	0.7094	T	229		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	AGE CALCULATION ASSUMES BOTH EAST AND WEST FARRINGTON PLUTONS ARE CONSANGUINEOUS
5796	1	508.05	48	0.7034	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	F-32	0.0000139*	63.8	122		1.52	0.7144	T	229		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	AGE CALCULATION ASSUMES BOTH EAST AND WEST FARRINGTON PLUTONS ARE CONSANGUINEOUS
5797	1	508.05	48	0.7034	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	F-41	0.0000139*	3	917		0.01	0.7049	T	229		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON; RB CONTENT DETERMINED BY ATOMIC ABSORPTION SPECTROPHOTOMETRY	AGE CALCULATION ASSUMES BOTH EAST AND WEST FARRINGTON PLUTONS ARE CONSANGUINEOUS
5798	1	508.05	48	0.7034	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	F-42	0.0000139*	26.9	718		0.11	0.703	T	229		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	AGE CALCULATION ASSUMES BOTH EAST AND WEST FARRINGTON PLUTONS ARE CONSANGUINEOUS
5799	1	508.05	48	0.7034	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	F-62	0.0000139*	98	443		0.64	0.708	T	229		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	AGE CALCULATION ASSUMES BOTH EAST AND WEST FARRINGTON PLUTONS ARE CONSANGUINEOUS
5800	1	508.05	48	0.7034	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	F-64	0.0000139*	68.8	506		0.4	0.707	T	229		age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	AGE CALCULATION ASSUMES BOTH EAST AND WEST FARRINGTON PLUTONS ARE CONSANGUINEOUS
5801	1	381.77	4	0.704	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NC-62	0.0000139*	73.1	20		10.67	0.7615	T	230		age of intrusion		3-POINT WHOLE-ROCK ISOCHRON	
5802	1	381.77	4	0.704	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	745	0.0000139*	76.1	54.1		4.08	0.7262	T	230		age of intrusion		3-POINT WHOLE-ROCK ISOCHRON	
5803	1	381.77	4	0.704	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	746	0.0000139*	75.4	15.5		14.24	0.7816	T	230		age of intrusion		3-POINT WHOLE-ROCK ISOCHRON	
5804	1	377.86	9	0.697	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	NC-97	0.0000139*	157	6.47		72.91	1.0891	T	231		age of intrusion		DUPLICATE ANALYSES:  RB=158 AND 156 PPM; SR=6.54 AND 6.39 PPM; 87SR/86SR=1.0872 AND 1.0910; 4-POINT WHOLE-ROCK ISOCHRON; INITIAL RATIO IS NOT MEANINGFUL BECAUSE OF LARGE ANALYTICAL UNCERTAINTY	
5805	1	377.86	9	0.697	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	747	0.0000139*	161	3.78		132.1	1.4217	T	231		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON; INITIAL RATIO IS NOT MEANINGFUL DUE TO A LARGE ANALYTICAL UNCERTAINTY	
5806	1	377.86	9	0.697	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	749	0.0000139*	158	3.2		154	1.5196	T	231		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON; INITIAL RATIO IS NOT MEANINGFUL DUE TO A LARGE ANALYTICAL UNCERTAINTY	
5807	1	377.86	9	0.697	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	750	0.0000139*	139	3.19		135	1.4165	T	231		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON; INITIAL RATIO IS NOT MEANINGFUL DUE TO A LARGE ANALYTICAL UNCERTAINTY	
5808	1	644.12	8	0.7135	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	807	0.0000139*	79	23		9.85	0.8036	T	232		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON	
5809	1	644.12	8	0.7135	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	816	0.0000139*	164	370		1.262	0.7247	T	232		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON	
5810	1	644.12	8	0.7135	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	41	0.0000139*	52.4	57.17		2.611	0.7375	T	232		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON	
5811	1	644.12	8	0.7135	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	041B	0.0000139*	54.5	50.3		3.1	0.7424	T	232		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON	
5812	1				whole rock		80	0.0000139*	108	192		1.622	0.7244	T					NO AGE CALCULATED	NO GEOLOGICALLY MEANINGFUL AGE OBTAINED FROM SAMPLE; PROBABLY INCOMPLETE SR ISOTOPIC HOMOGENIZATION DURING MYLONITIZATION
5813	1				whole rock		82	0.0000139*	164	86.07		5.5	0.7482	T					NO AGE CALCULATED	NO GEOLOGICALLY MEANINGFULL AGE OBTAINED FROM SAMPLE; PROBABLY INCOMPLETE SR ISOTOPIC HOMOGENIZATION DURING MYLONITIZATION
5814	1				whole rock		83	0.0000139*	133	82.79		4.62	0.7401	T					NO AGE CALCULATED	NO GEOLOGICALLY MEANINGFUL AGE OBTAINED FROM SAMPLE; PROBABLY INCOMPLETE SR ISOTOPIC HOMOGENIZATION DURING MYLONITIZATION
5815	1	348.49	8	0.7186	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1	0.0000139*	39.2	200		0.571	0.7216	T	235				6-POINT WHOLE-ROCK ISOCHRON	AGE OF MYLONITIZATION AND RECRYSTALLIZATION
5816	1	348.49	8	0.7186	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	24	0.0000139*	58.2	221		0.767	0.7225	T	235				6-POINT WHOLE-ROCK ISOCHRON	AGE OF MYLONITIZATION AND RECRYSTALLIZATION
5817	1	348.49	8	0.7186	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	077B	0.0000139*	167	88.7		5.54	0.7465	T	235				6-POINT WHOLE-ROCK ISOCHRON	AGE OF MYLONITIZATION AND RECRYSTALLIZATION
5818	1	348.49	8	0.7186	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	077C	0.0000139*	105	95.7		3.2	0.7336	T	235				6-POINT WHOLE-ROCK ISOCHRON	AGE OF MYLONITIZATION AND RECRYSTALLIZATION
5819	1	348.49	8	0.7186	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	804	0.0000139*	210	59.3		10.52	0.7709	T	235				6-POINT WHOLE-ROCK ISOCHRON	AGE OF MYLONITIZATION AND RECRYSTALLIZATION
5820	1	348.49	8	0.7186	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	805	0.0000139*	163	86.1		5.6	0.7459	T	235				6-POINT WHOLE-ROCK ISOCHRON	AGE OF MYLONITIZATION AND RECRYSTALLIZATION
5936	1	523.71	27	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	83	0.0000139*	167	107		4.57	0.738	T	236		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
5937	1	523.71	27	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	89	0.0000139*	169	137		3.61	0.7306	T	236		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
5938	1	523.71	27	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	90	0.0000139*	121	212		1.59	0.7151	T	236		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
5939	1	523.71	27	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	795	0.0000139*	126	229		1.6	0.7168	T	236		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
5940	1	523.71	27	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	796	0.0000139*	116	347		0.976	0.7118	T	236		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
5941	1	523.71	27	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	797	0.0000139*	130	197		1.93	0.7185	T	236		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
5942	1	523.71	27	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	D9-4	0.0000139*	161	53.1		2.76	0.7237	T	236		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
5943	1	523.71	27	0.7039	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	J2-6	0.0000139*	112	225		1.59	0.7153	T	236		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
5945	1	684.25	10	0.7098	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	75	0.0000139*	83.6	414		0.579	0.718	T	233		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON	
5946	1	723.6	10	0.7098	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	074A	0.0000147*	328	18.36		53.48	1.2358	T	233		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON	
5947	1	684.25	10	0.7098	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	074B	0.0000139*	312	16.47		56.63	1.2695	T	233		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON	
5948	1	684.25	10	0.7098	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	072B	0.0000139*	174	70.6		7.06	0.7787	T	233		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON	
5949	1	684.25	10	0.7098	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	072C	0.0000139*	121	63.48		5.5	0.7634	T	233		age of intrusion		6-POINT WHOLE-ROCK ISOCHRON	
5968	1	1366.46		0.704	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	DB-1	0.0000147*	12.7	141		0.261	0.7093	T	241		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON	
5969	1	1366.46		0.704	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	DB-2	0.0000147*	7.2	187		0.111	0.7057	T	241		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON	
5970	1				whole rock		DB-3	0.0000147*	4.1	761		0.016	0.7081	T					NO AGE CALCULATED	AGE IS ABOUT 1320 M.Y. OLD
5971	1	1366.46		0.704	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	DB-4	0.0000147*	29.1	123		0.688	0.7175	T	241		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON	
5972	1	1366.46		0.704	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	DB-5	0.0000147*	59.9	182		0.954	0.721	T	241		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON	
6078	1		5	0.715	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	12. YU-1033	1.43E-05	244	99			0.72044	T	239		age of intrusion		2-POINT WHOLE-ROCK ISOCHRON; RB AND SR VALUES BY X-RAY FLUORESCENCE	SEE ARMSTRONG (1974)
6079	1		5	0.715	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	12. YU-1034	1.43E-05	260	52			0.72591	T	239		age of intrusion		2-POINT WHOLE-ROCK ISOCHRON; RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE	SEE ARMSTRONG (1974)
6079	2	35.2	4	0.718	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	12. YU-1034	0.0000143*	260	52			0.72591	T	240				2-POINT WHOLE-ROCK ISOCHRON; RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE	AGE APPEARS TOO YOUNG; SEE ARMSTRONG (1974)
6080	1		4	0.718	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	12. YU-1035	1.43E-05	322	23			0.7393	T	240				2-POINT WHOLE-ROCK ISOCHRON; RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE	AGE APPEARS TOO YOUNG; SEE ARMSTRONG (1974)
6082	1		4	0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	14. YU-1023	1.43E-05	264	5			0.8058	T					RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE	SEE ARMSTRONG (1974)
6083	1		4	0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	14. YU-1022	1.43E-05	296	6			0.783	T			minimum age of intrusion		RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE	SEE ARMSTRONG (1974)
6084	1		9	0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	17. YU-FWC 6-67	1.43E-05	217	83			0.71405	T			maximum age of intrusion		RB AND SR VALUES DETERMINED BY X-RAY FLUORESCENCE	SEE ARMSTRONG (1974)
6100	1				whole rock		26. FWC70-69	1.43E-05	124	562		0.64	0.7065	T					NO AGE CALCULATED; ONE OF 4 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	
6101	1				whole rock		26.  FWC71-69	1.43E-05	52.6	626		0.243	0.7079	T					NO AGE CALCULATED; ONE OF 4 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	
6102	1				whole rock		26.  FWC-72-69	1.43E-05	52.8	484		0.316	0.7077	T					NO AGE CALCULATED; ONE OF 4 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	
6103	1				whole rock		26.  FWC73-69	1.43E-05	48.3	636		0.22	0.7067	T					NO AGE CALCULATED; ONE OF 4 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	
6104	1				whole rock		27.  2	1.43E-05	34	726			0.70434	T					NO AGE CALCULATED; ONE OF 4 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6105	1				whole rock		27.  2A	1.43E-05	47	634			0.70819	T					NO AGE CALCULATED; ONE OF 4 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6106	1				whole rock		27.  8	1.43E-05	16	1210			0.70668	T					NO AGE CALCULATED; ONE OF 4 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6107	1				whole rock		27.  9A	1.43E-05	35	746			0.7065	T					NO AGE CALCULATED; ONE OF 4 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6108	1				whole rock		28.  21B	1.43E-05	91	839			0.70852	T					NO AGE CALCULATED; ONE OF 5 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6109	1				whole rock		28.  22	1.43E-05	56	815			0.7095	T					NO AGE CALCULATED; ONE OF 5 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6110	1				whole rock		28.  33	1.43E-05	102	530			0.70873	T					NO AGE CALCULATED; ONE OF 5 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6111	1				whole rock		28.  35	1.43E-05	107	562			0.70883	T					NO AGE CALCULATED; ONE OF 5 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6112	1				whole rock		28.  36	1.43E-05	92	667			0.70862	T					NO AGE CALCULATED; ONE OF 5 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6113	1				whole rock		29.  50	1.43E-05	84	500			0.70925	T					NO AGE CALCULATED; ONE OF 4 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6114	1				whole rock		29.  48C	1.43E-05	115	325			0.71336	T					NO AGE CALCULATED; ONE OF 4 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6115	1				whole rock		29.  49	1.43E-05	108	541			0.71128	T					NO AGE CALCULATED; ONE OF 4 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6116	1				whole rock		29.  45	1.43E-05	137	316			0.71051	T					NO AGE CALCULATED; ONE OF 4 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6117	1				whole rock		32.  925	1.43E-05	117	751			0.70885	T					NO AGE CALCULATED; ONE OF 6 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6118	1	77	4		whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	34. YU-926	1.43E-05	139	587			0.70878	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	"PROBABLY A RESET AGE.  THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6118	2	77.5	4		biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	34. YU-926	0.0000143*	753	22			0.8159	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	PROBABLY A RESET AGE
6119	1	78.5	4		whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	35. YU-1040	0.0000143*	89	911			0.70873	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	"PROBABLY A RESET AGE.  THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6119	2	78.5	4		biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	35. YU-1040	0.0000143*	433	48			0.7378	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	PROBABLY A RESET AGE
6120	1				whole rock		32.  1041	0.0000143*	65	1144			0.70926	T					NO AGE CALCULATED; ONE OF 6 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6121	1				whole rock		32.  1042	1.43E-05	117	596			0.70716	T					NO AGE CALCULATED; ONE OF 6 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6122	1				whole rock		32.  1043	1.43E-05	111	777			0.70864	T					NO AGE CALCULATED; ONE OF 6 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6124	1	134	6	0.70315	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	40.  H2	0.0000143*	22	669			0.70326	T	242		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON; 87SR/86SR=0.70320 AND 0.70333	
6124	2	185.3	21	0.70302	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	40.  H2	0.0000143*	22	669			0.70326	T	243		maximum age of intrusion		7-POINT WHOLE-ROCK ISOCHRON; 87SR/86SR=0.70320 AND 0.70333	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6125	1	133.9	6	0.70315	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	40.  1003	0.0000143*	36	631			0.7034	T	242		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
6125	2	185.3	21	0.70302	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	40.  1003	0.0000143*	36	631			0.7034	T	243		maximum age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6126	1	133.9	6	0.70315	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	40.  1004	0.0000143*	25	826			0.7032	T	242		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON; 87SR/86SR=0.70312 AND 0.70329	
6126	2	185.3	21	0.70302	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	40.  1004	0.0000143*	25	826			0.7032	T	243		maximum age of intrusion		7-POINT WHOLE-ROCK ISOCHRON; 87SR/86SR=0.70312 AND 0.70329	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6127	1	133.9	6	0.70315	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	40.  1005	0.0000143*	40	506			0.70359	T	242		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
6127	2	185.3	21	0.70302	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	40.  1005	0.0000143*	40	506			0.70359	T	243		maximum age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6128	1	133.9	6	0.70315	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	40. 1006	0.0000143*	64	495			0.704	T	242		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON; 87SR/86SR= 0.70391 AND 0.70408	
6128	2	185.3	21	0.70302	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	40. 1006	0.0000143*	64	495			0.704	T	243		maximum age of intrusion		7-POINT WHOLE-ROCK ISOCHRON; 87SR/86SR= 0.70391 AND 0.70408	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6129	1	133.9	6	0.70315	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	40. 1007	0.0000143*	32	693			0.70349	T	242		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
6129	2	185.3	21	0.70302	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	40. 1007	0.0000143*	32	693			0.70349	T	243		maximum age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6130	1	133.9	6	0.70315	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	40. 1008	0.0000143*	42	632			0.70356	T	242		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
6130	2	185.3	21	0.70302	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	40. 1008	0.0000143*	42	632			0.70356	T	243		maximum age of intrusion		7-POINT WHOLE-ROCK ISOCHRON	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6131	1	133.9	6	0.70315	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	40. 1009	0.0000143*	90	145			0.70642	T	242		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6133	1				whole rock		43. 157	1.43E-05	62	614			0.70848	T					NO AGE CALCULATED; ONE OF 4 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6134	1				whole rock		43. 159	1.43E-05	74	564			0.70882	T					87SR/86SR= 0.70890 AND 0.70874; NO AGE CALCULATED; ONE OF 4 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6135	1	82.6	4	0.70825	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	44. YU-WT160	0.0000143*	63	630			0.7086	T			age of intrusion		2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6135	2	82.6	4	0.70825	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	44. YU-WT160	0.0000143*	329	147			0.71577	T			age of intrusion		2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6135	3	82.6	4	0.70825	hornblende	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	44. YU-WT160	0.0000143*	6	61			0.70869	T			age of intrusion		2-POINT BIOTITE-(HORNBLENDE)-WHOLE-ROCK ISOCHRON	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6136	1				whole rock		43. 173	1.43E-05	59	695			0.70854	T					NO AGE CALCULATED; ONE OF 4 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6137	1			0.7087	whole rock		46. YU-WT258	1.43E-05	90	622			0.70914	T					NO AGE CALCULATED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6138	1	82.6	4	0.70354	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	48. YU-WT133	0.0000143*	31	810			0.70368	T			age of intrusion		5-POINT MINERAL-WHOLE-ROCK ISOCHRON; 87SR/86SR=0.70375 AND 0.70362	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6138	2	82.6	4	0.70354	epidote	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	48. YU-WT133	0.0000143*	0.4	1239			0.7035	T			age of intrusion		5-POINT MINERAL-WHOLE-ROCK ISOCHRON; 87SR/86SR=0.70360 AND 0.70341	
6138	3	82.6	4	0.70354	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	48. YU-WT133	0.0000143*	5	780			0.70356	T			age of intrusion		5-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6138	4	82.6	4	0.70354	hornblende	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	48. YU-WT133	0.0000143*	6	60			0.7039	T			age of intrusion		5-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6138	5	82.6	4	0.70354	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	48. YU-WT133	0.0000143*	239	35			0.72637	T			age of intrusion		5-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6139	1	98.7	29	0.70352	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	48. YU-WT133	0.0000143*	31	810			0.70368	T			age not evaluated		4-POINT WHOLE-ROCK-EPIDOTE-PLAGIOCLASE-HORNBLENDE ISOCHRON; 87SR/86SR=0.70375 AND 0.70362	"ADDITIONAL DATING SUGGESTS AN AGE OF 82 M.Y. FOR THIS SAMPLE; THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6139	2	98.7	29	0.70352	epidote	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	48. YU-WT133	0.0000143*	0.4	1239			0.7035	T			age not evaluated		4-POINT WHOLE-ROCK-EPIDOTE-PLAGIOCLASE-HORNBLENDE ISOCHRON	ADDITIONAL DATING SUGGESTS AN AGE OF 82 M.Y. FOR THIS SAMPLE
6139	3	98.7	29	0.70352	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	48. YU-WT133	0.0000143*	5	780			0.70356	T			age not evaluated		4-POINT WHOLE-ROCK-EPIDOTE-PLAGIOCLASE-HORNBLENDE ISOCHRON	
6139	4	98.7	29	0.70352	hornblende	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	48. YU-WT133	0.0000143*	6	60			0.7039	T			age not evaluated		4-POINT WHOLE-ROCK-EPIDOTE-PLAGIOCLASE-HORNBLENDE ISOCHRON	
6140	1				whole rock		47. 134	1.43E-05	23	843			0.7039	T					NO AGE CALCULATED; ONE OF 5 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED; 87SR/86SR=0.70394 AND 0.70385	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6141	1				whole rock		47. 137	1.43E-05	33	747			0.704	T					NO AGE CALCULATED; ONE OF 5 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6142	1				whole rock		47. 142	1.43E-05	18	875			0.7038	T					NO AGE CALCULATED; ONE OF 5 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6143	1				whole rock		47. 144	1.43E-05	46	699			0.70396	T					NO AGE CALCULATED; ONE OF 5 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6144	1				whole rock		50. 143	1.43E-05	17	803			0.70372	T					NO AGE CALCULATED; ONE OF 4 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6145	1				whole rock		50. 150	1.43E-05	29	803			0.70388	T					NO AGE CALCULATED; ONE OF 4 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6146	1				whole rock		50. 151	1.43E-05	26	783			0.70393	T					NO AGE CALCULATED; ONE OF 4 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6147	1				whole rock		50. 152	1.43E-05	25	792			0.70406	T					NO AGE CALCULATED; ONE OF 4 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6148	1				whole rock		52. 236	1.43E-05	77	656			0.70771	T					NO AGE CALCULATED; ONE OF 5 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6149	1				whole rock		52. 237	1.43E-05	109	714			0.70792	T					NO AGE CALCULATED; ONE OF 5 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED; 87SR/86SR=0.70803 AND 0.70780	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6150	1				whole rock		52. 241	1.43E-05	46	691			0.70709	T					NO AGE CALCULATED; ONE OF 5 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED; 87SR/86SR=0.70717 AND 0.70702	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6151	1				whole rock		52. 242	1.43E-05	76	803			0.70716	T					NO AGE CALCULATED; ONE OF 5 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6152	1				whole rock		52. 243	1.43E-05	94	791			0.70721	T					NO AGE CALCULATED; ONE OF 5 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6153	1				whole rock		55. 204	1.43E-05	81	732			0.70691	T					NO AGE CALCULATED; ONE OF 6 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6154	1				whole rock		55. 256	1.43E-05	99	380			0.70605	T					NO AGE CALCULATED; ONE OF 6 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6155	1				whole rock		55. 261	1.43E-05	40	1175			0.70448	T					NO AGE CALCULATED; ONE OF 6 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6156	1				whole rock		55. 267	1.43E-05	60	881			0.70586	T					NO AGE CALCULATED; ONE OF 6 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6157	1				whole rock		55. 268	1.43E-05	71	843			0.70614	T					NO AGE CALCULATED; ONE OF 6 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6158	1				whole rock		55. 269	1.43E-05	79	736			0.70608	T					NO AGE CALCULATED; ONE OF 6 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6159	1				whole rock		58. 25	1.43E-05	59	969			0.70981	T					NO AGE CALCULATED; ONE OF 6 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6160	1				whole rock		58. 714	1.43E-05	62	649			0.70762	T					NO AGE CALCULATED; ONE OF 6 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6161	1				whole rock		58. 769	1.43E-05	40	450			0.70426	T					NO AGE CALCULATED; ONE OF 6 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6162	1				whole rock		58. 791	1.43E-05	45	477			0.70415	T					NO AGE CALCULATED; ONE OF 6 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6163	1				whole rock		58. 801	1.43E-05	27	551			0.70398	T					NO AGE CALCULATED; ONE OF 6 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6164	1				whole rock		58. 869	1.43E-05	41	555			0.70394	T					NO AGE CALCULATED; ONE OF 6 SAMPLES FOR WHOLE-ROCK ISOCHRON BUT DATA TOO DISPERSED	"THIS DATA ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6165	1	69.3	1.2	0.76469	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	61	0.0000143*	11	269.2		0.1189	0.7648	T			age of intrusion		2-POINT FELDSPAR-MUSCOVITE ISOCHRON	
6165	2	69.3	1.2	0.76469	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	61	0.0000143*	445.7	20.27		64.4	0.82765	T			age of intrusion		2-POINT FELDSPAR-MUSCOVITE ISOCHRON	
6188	1	681.31	9	0.7083	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	832	0.0000139*	156	52.56		8.23	0.7891	T	234		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON	
6189	1	681.31	9	0.7083	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	833	0.0000139*	168	58.57		8.26	0.7934	T	234		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON	
6190	1	681.31	9	0.7083	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	836	0.0000139*	203	11.77		53.3	1.2323	T	234		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON	
6191	1	681.31	9	0.7083	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	837	0.0000139*	233	10.76		65.5	1.3379	T	234		age of intrusion		4-POINT WHOLE-ROCK ISOCHRON	
6336	1	424.43	60		K feldspar	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	347F	0.0000147*	245.4	28.84	0.42			N			minimum age of intrusion			"THIS SAMPLE LISTED BY ARMSTRONG (1976, ISOCHRON/WEST, NO. 15, P. 11, ENTRY NO. 4) AS 432 M.Y. (RECALCULATED)"
6336	2	419.26	40		whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	347R	0.0000147*	150.9	22.15	0.26			N			minimum age of intrusion			"THIS SAMPLE LISTED BY ARMSTRONG (1976, ISOCHRON/WEST, NO. 15, P. 11, ENTRY NO. 4) AS 423 M.Y. (RECALCULATED)"
6364	1	550	54	0.706	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	45. YU-MCC48A	1.42E-05	245	196			0.73421	T			age not evaluated			"AGE ALSO REPORTED BY ARMSTRONG, TAUBENECK, AND HALES (1977)"
6371	1				whole rock		12. 68-9-13A	0.0000139*				62.76	1.1487						NO AGE CALCULATED	
6372	1	861.43	150	0.72	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	12. 68-9-13B	0.0000139*				16.98	0.9122		244				5-POINT WHOLE-ROCK ISOCHRON	AGE IS SPURIOUS
6373	1	861.43	150	0.72	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	12. 68-9-13C	0.0000139*				26.09	1.0688		244				5-POINT WHOLE-ROCK ISOCHRON	AGE IS SPURIOUS
6374	1	861.43	150	0.72	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	12. 68-9-13D	0.0000139*				28.27	1.0213		244				5-POINT WHOLE-ROCK ISOCHRON	AGE IS SPURIOUS
6375	1	861.43	150	0.72	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	12. 69-7-5D	0.0000139*				4.91	0.7864		244				5-POINT WHOLE-ROCK ISOCHRON	AGE IS SPURIOUS
6376	1	861.43	150	0.72	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	12. 68-9-12D	0.0000139*				8.93	0.8138		244				5-POINT WHOLE-ROCK ISOCHRON	AGE IS SPURIOUS
6380	1	2550	72	0.7057	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. C63C	1.42E-05	211	109			0.908	T	245		maximum age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON	
6380	2	2439	32	0.7097	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. C63C	1.42E-05	211	109			0.908	T	246		age of metamorphic crystallization		13-POINT WHOLE-ROCK ISOCHRON	
6381	1				whole rock		1. C63D	1.42E-05	275	130			0.814	T					NO AGE CALCULATED	
6382	1	2550	72	0.7057	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. C63E	1.42E-05	218	125			0.884	T	245		maximum age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON	
6382	2	2439	32	0.7097	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. C63E	1.42E-05	218	125			0.884	T	246		age of metamorphic crystallization		13-POINT WHOLE-ROCK ISOCHRON	
6383	1	2550	72	0.7057	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. C64A	1.42E-05	211	91			0.875	T	245		maximum age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON	
6383	2	2439	32	0.7097	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. C64A	1.42E-05	211	91			0.875	T	246		age of metamorphic crystallization		13-POINT WHOLE-ROCK ISOCHRON	
6384	1				whole rock		1. C64B	1.42E-05	274	149			0.78	T					NO AGE CALCULATED	
6385	1	2550	72	0.7057	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. C64C	1.42E-05	186	248			0.796	T	245		maximum age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON	
6385	2	2439	32	0.7097	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. C64C	1.42E-05	186	248			0.796	T	246		age of metamorphic crystallization		13-POINT WHOLE-ROCK ISOCHRON	
6386	1	2550	72	0.7057	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. C66A	1.42E-05	120	170			0.774	T	245		maximum age of metamorphic crystallization		4-POINT WHOLE-ROCK ISOCHRON	
6386	2	2439	32	0.7097	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. C66A	1.42E-05	120	170			0.774	T	246		age of metamorphic crystallization		13-POINT WHOLE-ROCK ISOCHRON	
6387	1	2400	40	0.7118	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 798	1.42E-05	266	122			0.93	T	247		age of metamorphic crystallization		8-POINT WHOLE-ROCK ISOCHRON	"THE AGE, ANALYTICAL DATA, AND LOCATION FOR THIS SAMPLE AS REPORTED BY ARMSTRONG AND HILLS (1967) ARE SUPERCEDED BY THE ABOVE"
6387	2	2439	32	0.7097	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 798	1.42E-05	266	122			0.93	T	246		age of metamorphic crystallization		13-POINT WHOLE-ROCK ISOCHRON	
6387	3	2531.06	73	0.7095	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 798	0.0000147*	266	122			0.93	T	248		age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON	
6388	1	2400	40	0.7118	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 799	1.42E-05	117	113			0.806	T	247		age of metamorphic crystallization		8-POINT WHOLE-ROCK ISOCHRON	"THE AGE, ANALYTICAL DATA, AND LOCATION FOR THIS SAMPLE AS REPORTED BY ARMSTRONG AND HILLS (1967) ARE SUPERCEDED BY THE ABOVE"
6388	2	2439	32	0.7097	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 799	1.42E-05	117	113			0.806	T	246		age of metamorphic crystallization		13-POINT WHOLE-ROCK ISOCHRON	
6388	3	2531.06	73	0.7095	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 799	0.0000147*	117	113			0.806	T	248		age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON	
6388	4	11.39	1	0.8055	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	3. YU-799	0.0000147*	117	113			0.806	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	THE AGE INDICATES A LATE TERTIARY THERMAL EVENT
6388	5	11.39	1	0.8055	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	3. YU-799	0.0000147*	338	14			0.8165	T				BIOTITE-CHLORITE(20%) MIXTURE	2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	THE AGE INDICATES A LATE TERTIARY THERMAL EVENT
6390	1	2400	40	0.7118	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 800	1.42E-05	314	183			0.8926	T	247		age of metamorphic crystallization		8-POINT WHOLE-ROCK ISOCHRON	"THE AGE, ANALYTICAL DATA, AND LOCATION FOR THIS SAMPLE AS REPORTED BY ARMSTRONG AND HILLS (1967) ARE SUPERCEDED BY THE ABOVE"
6390	2	2439	32	0.7097	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 800	1.42E-05	314	183			0.8926	T	246		age of metamorphic crystallization		13-POINT WHOLE-ROCK ISOCHRON	
6390	3	2531.06	73	0.7095	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 800	0.0000147*	314	183			0.8926	T	248		age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON	
6391	1	22	0.5	0.8913	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	4. YU-800	1.42E-05	314	183			0.8926	T					4-POINT MINERAL-WHOLE-ROCK ISOCHRON	AGE INDICATES A LATE TERTIARY THERMAL EVENT
6391	2	22	0.5	0.8913	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	4. YU-800	1.42E-05	1347	34			0.9256	T				BIOTITE-CHLORITE(12%) MIXTURE	4-POINT MINERAL-WHOLE-ROCK ISOCHRON	THE AGE INDICATES A LATE TERTIARY THERMAL EVENT
6391	3	22.77	0.5	0.8913	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	4. YU-800	0.0000147*	150	214			0.8913	T				PLAGIOCLASE PLUS MINOR K-FELDSPAR AND QUARTZ	4-POINT MINERAL-WHOLE-ROCK ISOCHRON	THE AGE INDICATES A LATE TERTIARY THERMAL EVENT
6391	4	22.77	0.5	0.8913	orthoclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	4. YU-800	0.0000147*	592	300			0.8939	T					4-POINT MINERAL-WHOLE-ROCK ISOCHRON	THE AGE INDICATES A LATE TERTIARY THERMAL EVENT
6392	1				whole rock		2. 802	1.42E-05	410	135			0.9014	T					NO AGE CALCULATED	
6393	1	2400	40	0.7118	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 803	1.42E-05	199	90			0.9352	T	247		age of metamorphic crystallization		8-POINT WHOLE-ROCK ISOCHRON	
6393	2	2439	32	0.7097	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 803	1.42E-05	199	90			0.9352	T	246		age of metamorphic crystallization		13-POINT WHOLE-ROCK ISOCHRON	
6393	3	2531.06	73	0.7095	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 803	0.0000147*	199	90			0.9352	T	248		age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON	
6394	1	2400	40	0.7118	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 822	1.42E-05	177	130			0.828	T	247		age of metamorphic crystallization		8-POINT WHOLE-ROCK ISOCHRON	"THE AGE, ANALYTICAL DATA, AND LOCATION FOR THIS SAMPLE AS REPORTED BY ARMSTRONG AND HILLS (1967) ARE SUPERCEDED BY THE ABOVE"
6394	2	2439	32	0.7097	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 822	1.42E-05	177	130			0.828	T	246		age of metamorphic crystallization		13-POINT WHOLE-ROCK ISOCHRON	
6394	3	2531.06	73	0.7095	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 822	0.0000147*	177	130			0.828	T	248		age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON	
6394	4	6.21	1	0.8277	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	5. YU-822	0.0000147*	177	130			0.828	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	THE AGE INDICATES A LATE TERTIARY THERMAL EVENT
6394	5	6.21	1	0.8277	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	5. YU-822	0.0000147*	834	36			0.8332	T			age of metamorphic crystallization		2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	THE AGE INDICATES A LATE TERTIARY THERMAL EVENT
6395	1	2400	40	0.7118	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 951	1.42E-05	132	148			0.8143	T	247		age of metamorphic crystallization		8-POINT WHOLE-ROCK ISOCHRON	
6395	2	2439	32	0.7097	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 951	1.42E-05	132	148			0.8143	T	246		age of metamorphic crystallization		13-POINT WHOLE-ROCK ISOCHRON	
6395	3	2531.06	73	0.7095	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 951	0.0000147*	132	148			0.8143	T	248		age of metamorphic crystallization		6-POINT WHOLE-ROCK ISOCHRON	
6396	1	8.7	0.2	0.814	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	6. YU-951	1.42E-05	132	148			0.8143	T					4-POINT MINERAL-WHOLE-ROCK ISOCHRON	THE AGE INDICATES A LATE TERTIARY THERMAL EVENT
6396	2	8.7	0.2	0.814	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	6. YU-951	1.42E-05	150	209			0.8143	T				PLAGIOCLASE WITH K-FELDSPAR AND QUARTZ	4-POINT MINERAL-WHOLE-ROCK ISOCHRON	THE AGE INDICATES A LATE TERTIARY THERMAL EVENT
6396	3	9.01	0.2	0.814	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	6. YU-951	0.0000147*	298	215			0.8144	T					4-POINT MINERAL-WHOLE-ROCK ISOCHRON	THE AGE INDICATES A LATE TERTIARY THERMAL EVENT
6396	4	9.01	0.2	0.814	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	6. YU-951	0.0000147*	714	13			0.8329	T					4-POINT MINERAL-WHOLE-ROCK ISOCHRON	THE AGE INDICATES A LATE TERTIARY THERMAL EVENT
6397	1	2400	40	0.7118	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 143	1.42E-05	397	51.3			1.465	T	247		age of metamorphic crystallization		8-POINT WHOLE-ROCK ISOCHRON	"THE AGE, ANALYTICAL DATA, AND LOCATION FOR THIS SAMPLE AS REPORTED BY ARMSTRONG AND HILLS (1967) ARE SUPERCEDED BY THE ABOVE"
6397	2	2439	32	0.7097	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 143	1.42E-05	397	51.3			1.465	T	246				13-POINT WHOLE-ROCK ISOCHRON	
6398	1	2440	40	0.7118	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	9. RR1	1.42E-05	246	77			1.0344	T	247		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
6398	2	2439	32	0.7097	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. RR1	1.42E-05	246	77			1.0344	T	246		age of intrusion		13-POINT WHOLE-ROCK ISOCHRON	
6399	1				hornblende		15. YU-833A	1.42E-05	4	35			0.734	T					NO AGE DETERMINED	
6400	1				hornblende		15. YU-833B	1.42E-05	7	117			0.734	T				HORNBLENDE PLUS MINOR PLAGIOCLASE AND CHLORITE	NO AGE CALCULATED	
6401	1				hornblende		15. YU-833C	1.42E-05	7.5	87			0.731	T				HORNBLENDE PLUS MINOR PLAGIOCLASE AND CHLORITE	NO AGE CALCULATED	
6402	1	570	80	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. 804	1.42E-05	222	139			0.743	T	249				5-POINT WHOLE-ROCK ISOCHRON	"THIS AGE SUGGESTS THE TIME OF SEDIMENTATION, NOT METAMORPHISM.  THE AGE, ANALYTICAL DATA, AND LOCATION FOR THIS SAMPLE AS REPORTED BY ARMSTRONG AND HILLS (1967) ARE SUPERCEDED BY THE ABOVE"
6403	1	570	80	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. 806	1.42E-05	94	153			0.717	T	249				5-POINT WHOLE-ROCK ISOCHRON	"THIS AGE SUGGESTS THE TIME OF SEDIMENTATION, NOT METAMORPHISM.  THE AGE, ANALYTICAL DATA, AND LOCATION FOR THIS SAMPLE AS REPORTED BY ARMSTRONG AND HILLS (1967) ARE SUPERCEDED BY THE ABOVE"
6404	1	570	80	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. 819	1.42E-05	210	135			0.75	T	249				5-POINT WHOLE-ROCK ISOCHRON	"THIS AGE SUGGESTS THE TIME OF SEDIMENTATION, NOT METAMORPHISM.  THE AGE, ANALYTICAL DATA, AND LOCATION FOR THIS SAMPLE AS REPORTED BY ARMSTRONG AND HILLS (1967) ARE SUPERCEDED BY THE ABOVE"
6405	1	570	80	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. 823	1.42E-05	189	130			0.755	T	249				5-POINT WHOLE-ROCK ISOCHRON	"THIS AGE SUGGESTS THE TIME OF SEDIMENTATION, NOT METAMORPHISM.  THE AGE, ANALYTICAL DATA, AND LOCATION FOR THIS SAMPLE AS REPORTED BY ARMSTRONG AND HILLS (1967) ARE SUPERCEDED BY THE ABOVE"
6406	1	570	80	0.708	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. ALB-1757	1.42E-05	184	38			0.8115	T	249				5-POINT WHOLE-ROCK ISOCHRON	"THIS AGE SUGGESTS THE TIME OF SEDIMENTATION, NOT METAMORPHISM"
6420	1	404	46	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. 795	1.42E-05	52	600			0.7075	T	250		"sample contains inherited material, age is too old"		8-POINT WHOLE-ROCK ISOCHRON	
6421	1	404	46	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. 942	1.42E-05	51	633			0.7073	T	250		"sample contains inherited material, age is too old"		8-POINT WHOLE-ROCK ISOCHRON	
6422	1	404	46	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. 943	1.42E-05	109	246			0.7153	T	250		"sample contains inherited material, age is too old"		8-POINT WHOLE-ROCK ISOCHRON	
6423	1	404	46	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. 945	1.42E-05	137	288			0.7135	T	250		"sample contains inherited material, age is too old"		8-POINT WHOLE-ROCK ISOCHRON	
6423	2	16.6	0.4	0.7131	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	2. YU-945	1.42E-05	137	288			0.7135	T			age of metamorphic crystallization		4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6423	3	17.18	0.4	0.7131	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	2. YU-945	0.0000147*	201	396			0.7135	T			age of metamorphic crystallization	PLAGIOCLASE PLUS K-FELDSPAR AND QUARTZ	4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6423	4	17.18	0.4	0.7131	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	2. YU-945	0.0000147*	316	418			0.7136	T			age of metamorphic crystallization		4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6423	5	17.18	0.4	0.7131	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	2. YU-945	0.0000147*	670	57			0.7212	T			age of metamorphic crystallization		4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6424	1	404	46	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. 947	1.42E-05	141	147			0.7169	T	250		"sample contains inherited material, age is too old"		8-POINT WHOLE-ROCK ISOCHRON	
6425	1	404	46	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. 948	1.42E-05	114	250			0.7137	T	250		"sample contains inherited material, age is too old"		8-POINT WHOLE-ROCK ISOCHRON	
6425	2				plagioclase		3. YU-948	1.42E-05	87	270			0.7136	T				PLAGIOCLASE AND QUARTZ	NO AGE CALCULATED	
6426	1	404	46	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. 949	1.42E-05	99	316			0.7115	T	250		"sample contains inherited material, age is too old"		8-POINT WHOLE-ROCK ISOCHRON	
6426	2	17.3	0.4	0.7112	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	4. YU-949	1.42E-05	99	316			0.7115	T			age of metamorphic crystallization		4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6426	3	17.91	0.4	0.7112	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	4. YU-949	0.0000147*	10	258			0.7111	T			age of metamorphic crystallization	PLAGIOCLASE AND QUARTZ	4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6426	4	17.91	0.4	0.7112	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	4. YU-949	0.0000147*	220	465			0.7117	T			age of metamorphic crystallization		4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6426	5	17.91	0.4	0.7112	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	4. YU-949	0.0000147*	557	40			0.7211	T			age of metamorphic crystallization		4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6427	1	404	46	0.7061	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. 950	1.42E-05	112	655			0.7096	T	250		"sample contains inherited material, age is too old"		8-POINT WHOLE-ROCK ISOCHRON	
6428	1	60	4	0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	13. 941	1.42E-05	272	23			0.7333	T						AGE MAY SIGNIFY THE TIME OF METAMORPHISM
6428	2	34	2	0.7168	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	14. YU-941	1.42E-05	272	23			0.7333	T			initial age disturbed by later metamorphism		2-POINT MUSCOVITE-WHOLE-ROCK ISOCHRON	
6428	3	35.2	2	0.7168	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	14. YU-941	0.0000147*	1025	5			1.0034	T			initial age disturbed by later metamorphism		2-POINT MUSCOVITE-WHOLE-ROCK ISOCHRON	
6428	4				K feldspar		14. YU-941	0.0000147*	737	37			0.7419	T					NO AGE CALCULATED	
6429	1	335	17	0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	14. 944	1.42E-05	76	35			0.735	T						AGE APPEARS TOO OLD
6429	2	23	0.5	0.7333	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	15. YU-944	1.42E-05	76	35			0.735	T			initial age disturbed by later metamorphism		3-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6429	3	23.81	0.5	0.7333	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	15. YU-944	0.0000147*	93	41			0.7357	T			initial age disturbed by later metamorphism		3-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6429	4	23.81	0.5	0.7333	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	15. YU-944	0.0000147*	500	4.2			0.8451	T			initial age disturbed by later metamorphism		3-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6430	1	158	8	0.705	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	13. 946	1.42E-05	134	45			0.7244	T						AGE MAY SIGNIFY THE TIME OF METAMORPHISM
6430	2	26	0.5	0.7213	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	16. YU-946	1.42E-05	134	45			0.7244	T			initial age disturbed by later metamorphism		4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6430	3	26.92	0.5	0.7213	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	16. YU-946	0.0000147*	25	82			0.7216	T			initial age disturbed by later metamorphism		4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6430	4	26.92	0.5	0.7213	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	16. YU-946	0.0000147*	381	70			0.7271	T			initial age disturbed by later metamorphism	K-FELDSPAR WITH PLAGIOCLASE	4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6430	5	26.92	0.5	0.7213	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	16. YU-946	0.0000147*	616	11			0.7815	T			initial age disturbed by later metamorphism		4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6431	1	230	35	0.7045	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. 936	1.42E-05	100	893			0.7055	T	251		"sample contains inherited material, age is too old"		5-POINT WHOLE-ROCK ISOCHRON	
6431	2	24	0.5	0.7053	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	2. YU-936	1.42E-05	100	893			0.7055	T			initial age disturbed by later metamorphism		4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6431	3	24.84	0.5	0.7053	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	2. YU-936	0.0000147*	101	1169			0.7053	T			initial age disturbed by later metamorphism	PLAGIOCLASE WITH MODERATE AMOUNT OF QUARTZ	4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6431	4	24.84	0.5	0.7053	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	2. YU-936	0.0000147*	212	1306			0.7053	T			initial age disturbed by later metamorphism		4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6431	5	24.84	0.5	0.7053	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	2. YU-936	0.0000147*	564	71			0.7131	T			initial age disturbed by later metamorphism		4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6432	1	230	35	0.7045	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. 937	1.42E-05	132	465			0.7077	T	251		"sample contains inherited material, age is too old"		5-POINT WHOLE-ROCK ISOCHRON	
6432	2	24	0.6	0.7074	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	3. YU-937	1.42E-05	132	465			0.7077	T			initial age disturbed by later metamorphism		4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6432	3	24.84	0.6	0.7074	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	3. YU-937	0.0000147*	43	340			0.7075	T			initial age disturbed by later metamorphism	PLAGIOCLASE WITH QUARTZ	4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6432	4	24.84	0.6	0.7074	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	3. YU-937	0.0000147*	194	634			0.7078	T			initial age disturbed by later metamorphism	K-FELDSPAR WITH MINOR AMOUNT OF PLAGIOCLASE AND QUARTZ	4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6432	5	24.84	0.6	0.7074	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	3. YU-937	0.0000147*	702	90			0.7152	T			initial age disturbed by later metamorphism		4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6433	1	230	35	0.7045	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. 938	1.42E-05	158	554			0.707	T	251		"sample contains inherited material, age is too old"		5-POINT WHOLE-ROCK ISOCHRON	
6433	2				plagioclase		4. YU-938	1.42E-05	22	695			0.7064	T				PLAGIOCLASE WITH QUARTZ	NO AGE CALCULATED	
6434	1	230	35	0.7045	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. 939	1.42E-05	151	385			0.7077	T	251		"sample contains inherited material, age is too old"		5-POINT WHOLE-ROCK ISOCHRON	
6434	2	22.7	0.5	0.7073	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	5. YU-939	1.42E-05	151	385			0.7077	T			initial age disturbed by later metamorphism		4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6434	3	23.5	0.5	0.7073	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	5. YU-939	0.0000147*	95	532			0.7074	T			initial age disturbed by later metamorphism	PLAGIOCLASE WITH QUARTZ	4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6434	4	23.5	0.5	0.7073	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	5. YU-939	0.0000147*	419	655			0.7079	T			initial age disturbed by later metamorphism	K-FELDSPAR WITH MINOR AMOUNT OF PLAGIOCLASE	4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6434	5	23.5	0.5	0.7073	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	5. YU-939	0.0000147*	931	47			0.7257	T			initial age disturbed by later metamorphism		4-POINT MINERAL-WHOLE-ROCK ISOCHRON	
6435	1	80	4	0.7064	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	5. YU-939	1.42E-05	151	385			0.7077	T					2-POINT MUSCOVITE-WHOLE-ROCK ISOCHRON	POSSIBLE AGE OF THE INITIAL METAMORPHISM
6435	2	80	4	0.7064	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	5. YU-939	1.42E-05	604	95			0.7272	T					2-POINT MUSCOVITE-WHOLE-ROCK ISOCHRON	POSSIBLE AGE OF INITIAL METAMORPHISM
6436	1	230	35	0.7045	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	1. 940	1.42E-05	147	491			0.7074	T	251		"sample contains inherited material, age is too old"		5-POINT WHOLE-ROCK ISOCHRON	
6436	2	67	1.5	0.7065	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	6. YU-940	1.42E-05	147	491			0.7074	T					4-POINT MINERAL-WHOLE-ROCK ISOCHRON	POSSIBLE AGE OF INITIAL METAMORPHISM
6436	3	69.36	1.5	0.7065	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	6. YU-940	0.0000147*	179	615			0.7073	T				PLAGIOCLASE WITH QUARTZ	4-POINT MINERAL-WHOLE-ROCK ISOCHRON	POSSIBLE AGE OF INITIAL METAMORPHISM
6436	4	69.36	1.5	0.7065	K feldspar	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	6. YU-940	0.0000147*	386	747			0.7077	T					4-POINT MINERAL-WHOLE-ROCK ISOCHRON	POSSIBLE AGE OF INITIAL METAMORPHISM
6436	5	69.36	1.5	0.7065	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	6. YU-940	0.0000147*	589	75			0.728	T					4-POINT MINERAL-WHOLE-ROCK ISOCHRON	POSSIBLE AGE OF INITIAL METAMORPHISM
6437	1	28.6	1	0.7098	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 796	1.42E-05	78	437			0.7104	T	252		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
6437	2	28.3	1	0.7103	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 796	1.42E-05	78	437			0.7104	T	253		age of intrusion		10-POINT WHOLE-ROCK ISOCHRON	
6438	1	28.3	1	0.7103	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 797	1.42E-05	110	214			0.7127	T	253		age of intrusion		10-POINT WHOLE-ROCK ISOCHRON	
6438	2	19	2	0.7123	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	3. YU-797	1.42E-05	600	35			0.7259	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	THE AGE SUGGESTS THAT THE RB-SR ISOTOPIC SYSTEM HAS BEEN DISTURBED
6438	3	19.67	2	0.7123	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	3. YU-797	0.0000147*	110	214			0.7127	T					2-POINT BIOTITE-WHOLE-ROCK ISOCHRON	THE AGE SUGGESTS THAT THE RB-SR ISOTOPIC SYSTEM HAS BEEN DISTURBED
6438	4	25.88	2	0.7122	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	3. YU-797	0.0000147*	457	16			0.7414	T			age not evaluated		2-POINT MUSCOVITE-WHOLE-ROCK ISOCHRON	
6438	5	25.88	2	0.7122	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	3. YU-797	0.0000147*	110	214			0.7127	T			age not evaluated		2-POINT MUSCOVITE-WHOLE-ROCK ISOCHRON	
6439	1	23	0.4	0.712	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	3. YU-797	1.42E-05	110	214			0.7127	T					5-POINT MINERAL-WHOLE-ROCK ISOCHRON	"THIS ISOCHRON AGE, COMPARED WITH THE WHOLE-ROCK ISOCHRON AGE (28 M.Y.), SUGGESTS THAT THE RB-SR ISOTOPIC SYSTEM HAS BEEN DISTURBED"
6439	2	23	0.4	0.712	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	3. YU-797	1.42E-05	51	385			0.7119	T				PLAGIOCLASE WITH MINOR AMOUNT OF K-FELDSPAR AND QUARTZ	5-POINT MINERAL-WHOLE-ROCK ISOCHRON	THIS ISOCHRON AGE AND THE WHOLE-ROCK ISOCHRON AGE ARE DISCORDANT
6439	3	23.81	0.4	0.712	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	3. YU-797	0.0000147*	317	284			0.7132	T					5-POINT MINERAL-WHOLE-ROCK ISOCHRON	THIS ISOCHRON AGE AND THE WHOLE-ROCK ISOCHRON AGE ARE DISCORDANT
6439	4	23.81	0.4	0.712	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	3. YU-797	0.0000147*	600	35			0.7259	T					5-POINT MINERAL-WHOLE-ROCK ISOCHRON	THIS ISOCHRON AGE AND THE WHOLE-ROCK ISOCHRON AGE ARE DISCORDANT
6439	5	23.81	0.4	0.712	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	3. YU-797	0.0000147*	457	16			0.7414	T					5-POINT MINERAL-WHOLE-ROCK ISOCHRON	THIS ISOCHRON AGE AND THE WHOLE-ROCK ISOCHRON AGE ARE DISCORDANT
6440	1	28.6	1	0.7098	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 814	1.42E-05	86	330			0.7094	T	252		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	"THE AGE, ANALYTICAL DATA, AND LOCATION FOR THIS SAMPLE AS REPORTED BY ARMSTRONG AND HILLS (1967) ARE SUPERCEDED BY THE ABOVE"
6440	2	28.3	1	0.7103	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 814	1.42E-05	86	330			0.7094	T	253		age of intrusion		10-POINT WHOLE-ROCK ISOCHRON	
6441	1	28.6	1	0.7098	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 816	1.42E-05	261	5.5			0.765	T	252		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
6441	2	28.3	1	0.7103	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 816	1.42E-05	261	5.5			0.765	T	253		age of intrusion		10-POINT WHOLE-ROCK ISOCHRON	
6442	1	24.6	0.3	0.7162	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	4. YU-816	1.42E-05	261	5.5			0.765	T					4-POINT MINERAL-WHOLE-ROCK ISOCHRON	"THIS ISOCHRON AGE, COMPARED WITH THE WHOLE-ROCK ISOCHRON AGE (28 M.Y.), SUGGESTS THAT THE RB-SR ISOTOPIC SYSTEM HAS BEEN DISTURBED"
6442	2	24.6	0.3	0.7162	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	4. YU-816	1.42E-05	45	7.5			0.7223	T				PLAGIOCLASE WITH A MINOR AMOUNT OF QUARTZ	4-POINT MINERAL-WHOLE-ROCK ISOCHRON	THIS ISOCHRON AGE AND THE WHOLE-ROCK ISOCHRON AGE ARE DISCORDANT
6442	3	25.47	0.3	0.7162	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	4. YU-816	0.0000147*	752	9.8			0.7914	T					4-POINT MINERAL-WHOLE-ROCK ISOCHRON	THIS ISOCHRON AGE AND THE WHOLE-ROCK ISOCHRON AGE ARE DISCORDANT
6442	4	25.47	0.3	0.7162	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	4. YU-816	0.0000147*	958	1.26			1.497	T					4-POINT MINERAL-WHOLE-ROCK ISOCHRON	THIS ISOCHRON AGE AND THE WHOLE-ROCK ISOCHRON AGE ARE DISCORDANT
6443	1	28.3	1	0.7103	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 817	1.42E-05	126	131			0.7125	T	253		age of intrusion		10-POINT WHOLE-ROCK ISOCHRON	"THE AGE, ANALYTICAL DATA, AND LOCATION FOR THIS SAMPLE AS REPORTED BY ARMSTRONG AND HILLS (1967) ARE SUPERCEDED BY THE ABOVE"
6444	1	28.6	1	0.7098	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 820	1.42E-05	111	360			0.7093	T	252		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
6444	2	28.3	1	0.7103	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 820	1.42E-05	111	360			0.7093	T	253		age of intrusion		10-POINT WHOLE-ROCK ISOCHRON	
6445	1	28.6	1	0.7098	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 821	1.42E-05	190	18			0.724	T	252		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	"THE AGE, ANALYTICAL DATA, AND LOCATION FOR THIS SAMPLE AS REPORTED BY ARMSTRONG AND HILLS (1967) ARE SUPERCEDED BY THE ABOVE"
6445	2	28.3	1	0.7103	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. 821	1.42E-05	190	18			0.724	T	253		age of intrusion		10-POINT WHOLE-ROCK ISOCHRON	
6446	1	28.6	1	0.7098	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. ALB2233	1.42E-05	152	76			0.7147	T	252		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
6446	2	28.3	1	0.7103	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. ALB2233	1.42E-05	152	76			0.7147	T	253		age of intrusion		10-POINT WHOLE-ROCK ISOCHRON	
6447	1	28.6	1	0.7098	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. ALB2235	1.42E-05	91	474			0.7082	T	252		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
6447	2	28.3	1	0.7098	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. ALB2235	1.42E-05	91	474			0.7082	T	253		age of intrusion		10-POINT WHOLE-ROCK ISOCHRON	
6448	1	28.6	1	0.7098	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. ALB2240	1.42E-05	96	172			0.7096	T	252		age of intrusion		8-POINT WHOLE-ROCK ISOCHRON	
6448	2	28.3	1	0.7103	whole rock	87Sr/86Sr-87Rb/86Sr isochron (whole rock)	2. ALB2240	1.42E-05	96	172			0.7096	T	253		age of intrusion		10-POINT WHOLE-ROCK ISOCHRON	
6450	1	28	0.5	0.7141	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	14. YU-815	1.42E-05	316	34			0.7248	T			maximum age of intrusion	PERTHITIC MICROCLINE	3-POINT MINERAL ISOCHRON	
6450	2	28	0.5	0.7141	microcline	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	14. YU-815	1.42E-05	566	15			0.7559	T			maximum age of intrusion		3-POINT MINERAL ISOCHRON	
6450	3	28.99	0.5	0.7141	muscovite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	14. YU-815	0.0000147*	554	3			0.9299	T			maximum age of intrusion		3-POINT MINERAL ISOCHRON	
6452	1	550	54	0.706	whole rock	Conventional Rb-Sr (assumed initial 87Sr/86Sr)	48A	1.42E-05	245	196			0.73421	T			age not evaluated			"THE LOCATIONS AND BETTER ANALYTICAL DATA FOR THE SAMPLES LISTED IN THIS ARTICLE CAN BE FOUND IN ARMSTRONG (1975 AND 1976, ISOCHRON/WEST) AND ARMSTRONG, TAUBENECK, AND HALES (1976, ISOCHRON/WEST)"
6453	1	41.11	8	0.7075	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A14	0.0000139*	77.28	861		0.251	0.7082	N					5-POINT MINERAL-WHOLE-ROCK ISOCHRON	AGE REFLECTS AN EOCENE THERMAL EVENT
6453	2	41.11	8	0.7075	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A14	0.0000139*	377	44.8		23.5	0.7207	N					5-POINT MINERAL-WHOLE-ROCK ISOCHRON	AGE REFLECTS AN EOCENE THERMAL EVENT
6453	3	43.48	8	0.7075	hornblende	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A14	0.0000147*	65.4	66.5		2.75	0.7095	N					5-POINT MINERAL-WHOLE-ROCK ISOCHRON	AGE REFLECTS AN EOCENE THERMAL EVENT
6453	4	43.48	8	0.7075	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A14	0.0000147*	7.19	1077		0.019	0.7068	N				PLAGIOCLASE-QUARTZ MIXTURE	5-POINT MINERAL-WHOLE-ROCK ISOCHRON	AGE REFLECTS AN EOCENE THERMAL EVENT
6453	5	43.48	8	0.7075	apatite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A14	0.0000147*	1.29	458		0.008	0.7068	N					5-POINT MINERAL-WHOLE-ROCK ISOCHRON	AGE REFLECTS AN EOCENE THERMAL EVENT
6454	1	45.03	5	0.7103	whole rock	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A18	0.0000139*	114	731		0.435	0.7111	N					4-POINT MINERAL-WHOLE-ROCK ISOCHRON	AGE REFLECTS AN EOCENE THERMAL EVENT
6454	2	45.03	5	0.7103	biotite	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A18	0.0000139*	758	50.4		42	0.7371	N					4-POINT MINERAL-WHOLE-ROCK ISOCHRON	AGE REFLECTS AN EOCENE THERMAL EVENT
6454	3	47.62	5	0.7103	plagioclase	87Sr/86Sr-87Rb/86Sr isochron (mineral-whole rock)	A18	0.0000147*	12.9	817		0.044	0.7091	N				PLAGIOCLASE-QUARTZ MIXTURE	4-POINT MINERAL-WHOLE-ROCK ISOCHRON	AGE REFLECTS AN EOCENE THERMAL EVENT
6454	4				K feldspar		A18	0.0000147*	348	912		1.06	0.714	N					NO AGE CALCULATED.  K-FELDSPAR DATA PLOTS ABOVE THE 46 M.Y. ISOCHRON	
6454	5	47.62	5	0.7103	apatite	87Sr/86Sr-8