USGS Visual Identifier
National Geologic Map Database logo GEOLEX database

Geologic Unit: Pumpkin Valley

Pumpkin Valley Shale (VA*)
Pumpkin Valley Shale of the Conasauga Group (TN*,VA*,WV*)
Pumpkin Valley Member of the Conasauga Shale (TN*)

Cambrian, Middle*

Geologic Province:
Appalachian basin*

Areal Extent:

Type Locality:
Exposures along northwest side of Pumpkin Valley, most typically along State Highway 66, TN (Rodgers and Kent, 1948).

Unit Name History:
First used (Bridge, 1945). Named (Rodgers and Kent, 1948). Revised; Areal limits (Ryder, 1992).

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