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Geologic Unit: Moccasin

Moccasin Formation (VA*,TN*,WV*)
Moccasin Formation of Chickamauga Group (TN)
Moccasin Limestone (VA*,TN*,WV*,OH)
Moccasin Limestone of Chickamauga Group (GA)
Moccasin Limestone of Trenton Group (WV)

Ordovician, Middle*
Ordovician, Late

Geologic Province:
Appalachian basin*

Areal Extent:

Type Locality:
Moccasin Creek, Scott Co., VA (Campbell, 1894).

Walker Mountain Sandstone Member (VA), Deicke Bentonite Bed (VA)

Unit Name History:
Named (Campbell, 1894).
Revised (Stose, 1923).
Extended into GA (Butts and Gildersleeve, 1948).
Extended into OH subsurface (Calvert, 1962).
Revised to part of Trenton Group (Cardwell and others, 1968).
Revised to Moccasin Formation of Chickamauga Group (Milici, 1973).
Revised to Moccasin Limestone of Chickamauga Group (Lawton and Marsalis, 1976).
Overview (Brent, 1985).
Age modified (Rader, 1984).
Overview (Haynes, 1992).
Correlation information (Frey, 1995).
Overview in WV subsurface (Ryder and others, 1996).

Note: If you need more information, please contact Nancy Stamm (
Asterisks (*) indicate usage by the U.S. Geological Survey. Other usages by state geological surveys.

"No current usage" implies that a name has been abandoned or that it has fallen into disuse. Former usage and, if known, replacement name given in parentheses ().

Slashes (/) indicate unit name usage violates the 1983 North American Stratigraphic Code. This violation may be explained within brackets ([ ]).

U.S. Department of the Interior, U.S. Geological Survey, Reston, VA, USA
Database project personnel
Last modified: 15-Jan-2013