Ice masses

Fields of ice, formed in regions of perennial frost. [USGS Circ 1048]
This category is also used for ice fields, ice patches, ice sheets, icebergs, icecap depressions, icecap domes, icecaps, and icefalls.
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Map showing extent of glaciation in the Eagle quadrangle, east-central Alaska

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.

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