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National Geologic Map Database

Geologic Unit: Copper Basin

Usage:

Copper Basin Formation (ID*)
Copper Basin Group (ID*)


Subunits:

GROUP STATUS (alphabetical) --all in ID: Argosy Creek Formation*, Drummond Mine Limestone*, Little Copper Formation.
FORMATION STATUS (alphabetical) --all in ID: Drummond Mine Limestone Member*, Little Copper Member*.


Geologic age:

Mississippian*


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

Type locality: exposures in upper part of Star Hope Creek, southern edge of Copper Basin depression, Mackay quadrangle, Custer Co., ID (Ross, 1962).


AAPG geologic province:

Idaho Mountains province*
Snake River basin*


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 ([ ]).