Goldmine Branch Formation (GA*)
Precambrian(?)*
Proterozoic, Late(?)*
Cambrian*
Ordovician, Early*
Ordovician, Middle(?)*
Type section: saprolite outcrops in roadside ditches along first unpaved road to the east from GA Highway 101/113 south of Yorkville radio (microwave) towers, Yorkville 7.5-min quadrangle, Paulding Co., northwestern GA (Crawford and others, in press).
Piedmont-Blue Ridge province*
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.
"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 ([ ]).