U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Cooper

Usage:

Cooper Group (GA*,SC*)
Cooper Formation (GA,SC*)
Cooper Marl (GA*)


Subunits:

Harleyville Formation/Member (SC*), Parkers Ferry Formation/Member (SC*), Ashley Formation/Member (SC*)


Geologic age:

Tertiary*
Miocene, early(?)*
Oligocene*
Eocene, late*


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

Exposures along Cooper River, Berkeley Co., SC (Tuomey, 1848). Lectostratotype: Exposure in quarry of the Giant Portland Cement Company near Holly Hill, Dorchester Co., SC (Ward and others, 1979).


AAPG geologic province:

Atlantic Coast basin*
South Georgia sedimentary province*


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 ([ ]).