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Geologic Map of the Nulato Quadrangle, West-Central Alaska

IMAP 2677

By:
and

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Abstract

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 northeast to southwest and dextrally offsets all major geologic features as much as 130 km.

Study Area

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Geologic Map of the Nulato Quadrangle, West-Central Alaska
Series title:
IMAP
Series number:
2677
Subseries:
GIS
ISBN:
0607939680
Edition:
Online Version 1.0
Year Published:
2000
Language:
ENGLISH
Publisher:
Geological Survey (U.S.)
Contributing office(s):
Mineral Resources - Alaska
Description:
1 map :col. ;45 x 59 cm., on sheet 64 x 96 cm., folded in envelope 30 x 24 cm. +1 pamphlet (41 p. : ill., maps ; 28 cm.)
Scale:
250000