Usage:
Opelika Complex (AL*,GA*)
Opelika Group (AL,GA)
Subunits:
Complex-Loachapoka Schist and Auburn Gneiss (AL*,GA*), Farmville Metagranite (AL*), Notasulga metagranite (informal) (AL,GA) and Saugahatchee quartzite (informal) (AL); Group-Loachapoka Formation and Auburn Formation (AL,GA)
Geologic age:
Paleozoic, early*
Type section, locality, area and/or origin of name:
Town of Opelika, Lee Co., AL (Bentley and Neathery, 1970).
AAPG geologic province:
Piedmont-Blue Ridge 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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).