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Geologic map of the Big Delta A-4 Quadrangle, Alaska


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2014-05-22 11:36:00


Reger, R.D., and P�w�, T.L., 2002, Geologic map of the Big Delta A-4 Quadrangle, Alaska: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys,


This map illustrates extents and types of unconsolidated deposits and bedrock in the Big Delta A-4 Quadrangle, Alaska. This map is based on field observations begun by P�w� in 1949 and by Reger in 1976. Unit characteristics and extents were determined during field visits and by interpreting 1:40,000-scale black-and-white aerial photographs taken in August 1949 and 1:63,360-scale, false-color infrared aerial photographs taken in July 1978, August 1980, and August 1981.


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This publication provides geological information on the Delta Junction and Big Delta area for resource evaluation and geological hazards.

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