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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).