No current usage.
(Rocks of †Scott Formation (TN), or †Scott Shale (TN), reallocated to (ascending) Graves Gap Formation, Redoak Mountain Formation, and Vowell Mountain Formation. See Graves Gap, Redoak Mountain, and Vowell Mountain.)
Middle Pennsylvanian (Atokan)
Named from its frequent occurrence in Scott Co., eastern TN (Keith, 1896).
Appalachian basin
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 ([ ]).