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National Geologic Map Database

NGMDB

Geologic Unit: Great Smoky

Usage:

Great Smoky Group of Ocoee Supergroup (GA*,NC*,TN*)


Subunits:

(alphabetical): Ammons Formation (NC*), Anakeesta Formation (NC*,TN*), Boyd Gap Formation (GA*,NC*,TN*), Buck Bald formation [informal] (NC,TN), Cades Sandstone (NC*,TN*), Copperhill Formation (GA*,NC*,TN*), Dean Formation (GA*,NC*,TN*), Elkmont Sandstone (NC*,TN*), Etowah Formation (GA), Farner formation [informal] (NC,TN), Grassy Branch Formation (NC*), Hothouse Formation (GA*,NC*,TN*), Hughes Gap Formation (GA*,NC*,TN*), Panther Bluff Formation (GA*,TN*), Rich Butt Formation (NC), Richard Russell Gneiss (GA*), Sweetwater Creek Formation (GA), Thunderhead Sandstone (NC*,TN*) or Thunderhead Formation (NC), Wehutty Formation (GA*,NC*,TN*).


Geologic age:

Late Proterozoic*


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

Named from extensive development in Great Smoky Mountains, southwest of Pigeon River, in southern part of Knoxville quadrangle, which adjoins Nantahala quadrangle on north, western NC (US geologic names lexicons, USGS Bull. 896, 1200).


AAPG geologic province:

Appalachian basin*
Piedmont-Blue Ridge province*


NGMDB

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 ([ ]).

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Page Last Modified: Tue Jun 3 16:11:32 2014