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National Geologic Map Database

Geologic Unit: Copper Lake

Usage:

Copper Lake Formation (AK*)


Geologic age:

Tertiary
Paleocene(?)*
Eocene, early*


Type section, locality, area and/or origin of name:

Type section (composite): (1) lower conglomerate member, east end of ridge 2.5 km S. 45 deg. E. of outlet of Upper Copper Lake; (2) middle sandstone and siltstone member, east slope of peak 2432, 1.6 km south of west end of Boot Lake; (3) upper conglomerate member, ravine cutting east face of ridge between Fog and Kakhonak Lakes, 4 km S. 65 deg. E. of Fog Lake (Detterman and Reed, 1980).


AAPG geologic province:

Alaska Peninsula province*
Alaska Southwestern region*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).