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.
Study Area
| 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 |
| DOI | 10.3133/ofr20121138 |
| 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 |
| Google Analytic Metrics | Metrics page |