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Geologic Map of the Arctic Quadrangle, Alaska

IMAP 2673

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Abstract

Introduction The Arctic quadrangle is well located to shed light on the basic geologic relations of northern Alaska. The rocks represent all of the stratigraphic systems from Cambrian to Cretaceous and all but one of the tectono-stratigraphic subterranes of the Brooks Range, from the autochthonous subterrane in the north to the allochthonous subterranes farther south. Among the distinctive geologic features displayed in the Arctic quadrangle are voluminous volcanic rocks of probable Devonian age, a wide array of Carboniferous carbonate facies in the Lisburne Group (which here extends up into the Middle Pennsylvanian), the southward transition of Upper Devonian (Famennian) clastic facies from fluvial conglomerate to marine sandstone, a full display of Upper Devonian (Frasnian) reef-related strata, and fossiliferous Ordovician rocks in both carbonate and chert terranes. Most of the quadrangle is in the Arctic National Wildlife Refuge (ANWR) and Arctic Wildlife Refuge Wilderness. The quadrangle also includes Arctic Village, the only village in the region and a potential destination or transfer point for visitors to the wildlife refuge.

Study Area

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Geologic Map of the Arctic Quadrangle, Alaska
Series title:
IMAP
Series number:
2673
Subseries:
GIS
Edition:
Online Version 1.0
Year Published:
2001
Language:
ENGLISH
Publisher:
Geological Survey (U.S.)
Contributing office(s):
Mineral Resources - Alaska
Description:
Sheet 1, 45 by 34 inches (in color); sheet 2, 29 by 29 inches; Accompanied by 38 page text
Scale:
200000