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Geologic Map of the Nulato Quadrangle, West-Central Alaska

By W.W. Patton Jr. and E.J. Moll-Stalcup

2000

Introduction

The Nulato quadrangle encompasses approximately 17,000 km² (6,500 mi²) of west-central Alaska within the Yukon River drainage basin. The quadrangle straddles two major geologic features—the Yukon–Koyukuk sedimentary basin, a huge triangle-shaped Cretaceous depression that stretches across western Alaska from the Brooks Range to the Yukon delta; and the Ruby geanticline, a broad uplift of pre-Cretaceous rocks that borders the Yukon–Koyukuk basin on the southeast. The Kaltag Fault crosses the quadrangle diagonally from north-east to southwest and dextrally offsets all major geologic features as much as 130 km.

Last modified March 21, 2012
First posted October 4, 2000

• Map PDF (~37" x ~26"; 3 MB)
• Pamphlet PDF (41 pages; 1.7 MB)

• This report is also available in print from:
  
  USGS Information Services, Box 25286,
  Federal Center, Denver, CO 80225
  telephone: 888 ASK-USGS; e-mail: infoservices@usgs.gov

For additional information contact:
Alaska Science Center staff
U.S. Geological Survey
4210 University Dr.
Anchorage, AK 99508
Alaska Mineral Resources
Alaska Science Center

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Suggested citation:

Patton, W.W., Jr., and Moll-Stalcup, E.J., 2000, Geologic map of the Nulato quadrangle, west-central Alaska: U.S. Geological Survey Geologic Investigations Series I–2677, available at https://pubs.usgs.gov/imap/i2677/.