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Preliminary geologic map of the northeastern part of the Tanana quadrangle, Alaska
Robert M. Chapman, Warren Yeend
1972, Miscellaneous Field Studies Map 342
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....