Preliminary geologic map of parts of the Anchorage C-2, C-3, D-2, and D-3 quadrangles, Alaska

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Preliminary geologic map of parts of the Anchorage C-2, C-3, D-2, and D-3 quadrangles, Alaska, Report of Investigation 83-10,RI 83-10 presents 1:25,000-scale geologic mapping of the north-central Chugach Mountains. This rugged area, approximately 120 km NE of Anchorage, straddles the Matanuska Glacier and includes rocks of the southern (lower) Peninsular Terrane and northern Chugach Terrane. Helicopter-supported field work lasted 4-8 weeks each summer during 1980-1982. Most of the previous mapping in the area was at 1:250,000-scale, and this work provides a much more detailed examination of rock types and structures in the area. In particular, the contact between Peninsular and Chugach Terranes (Border Ranges Fault) is present as a complex series of mostly steeply-dipping faults, commonly with ambiguous units separating the two. The complete report, geodatabase, and ESRI fonts and style files are available from the DGGS website: http://doi.org/10.14509/2349.

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geodatabase Unknown geologic map Open resource
Web Resource Unknown Open resource

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