Usage:
Efland Formation (NC*)
Geologic age:
Paleozoic, early*
Type section, locality, area and/or origin of name:
Exposure in Duke University quarry between Efland and Hillsboro. Occurs only east of Troy anticlinorium and is traceable from northern Moore Co. to northern Person Co. Named from town of Efland, Orange Co., central NC (Conley and Bain, 1965).
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 ([ ]).