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Map showing extent of glaciation in the Eagle quadrangle, east-central Alaska

Open-File Report 2012-1138

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Abstract

This map covers the Eagle 1:250,000-scale quadrangle in the northeastern part of the Yukon-Tanana Upland in Alaska. It shows the extent of five major glacial advances, former glacial lakes, and present fragmented terrace deposits related to the advances. The Yukon-Tanana Upland is an area of about 116,550 km2 between the Yukon and Tanana Rivers in east-central Alaska that extends into the western part of the Yukon Territory of Canada. Traditionally, the Yukon-Tanana Upland was thought to be a part of unglaciated central Alaska, however, a rather long history of localized alpine glaciation during Pleistocene and possibly Tertiary time can be shown. Deposits of five of the glacial episodes can be found in the Eagle quadrangle. This report is an outcome of studies conducted in conjunction with bedrock mapping intended for mineral resource assessment.

Geospatial Extents

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Map showing extent of glaciation in the Eagle quadrangle, east-central Alaska
Series title:
Open-File Report
Series number:
2012-1138
Year Published:
2012
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
Alaska Science Center
Description:
Sheet: 46 inches x 26 inches
Country:
United States
State:
Alaska
Other Geospatial:
Yukon Charley Rivers National Preserve
Datum:
North American Datum of 1927
Projection:
Universal Transverse Mercator projection; Zone 7N
Scale:
250000
Online Only (Y/N):
Y