Forge Creek Suite (NC,TN,VA)
Watauga River Gneiss (TN,NC), Comers Gneiss (VA) Grayson Gneiss (VA)
Mesoproterozoic
Not designated. Named from Forge Creek, Lat. 36 deg. 28 min. N., Long. 81 deg. 44 min. W., Baldwin Gap 7.5-min quadrangle, Johnson Co., TN (Bartholomew and Lewis, 1984).
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 ([ ]).