Skip to main content
U.S. flag

An official website of the United States government

Map Releases

Our programs produce accurate geologic maps and 3-D geologic frameworks that provide critical data for sustaining and improving the quality of life and economic vitality of the Nation. 

Filter Total Items: 8999

Preliminary geologic map of the Eagle quadrangle, Alaska

No abstract available.

Preliminary geologic map of the northeastern part of the Tanana quadrangle, Alaska

Mapping is based on both ground observations and aerial observations from a helicopter, August 11-19 and September 1-5, 1970, and supplemented by interpretation from aerial photographs. Bedrock geology chiefly by R.M. Chapman, and surficial geology chiefly by W.E. Yeend.