USGS Visual Identifier
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Geologic Unit: Whitesburg

Whitesburg Limestone (TN*,VA*)
Whitesburg Limestone of Cliffield Group (VA)
Whitesburg Limestone Member of Blockhouse Shale (TN*)

Ordovician, Middle*

Geologic Province:
Appalachian basin*

Areal Extent:

Type Locality:
Two miles southeast of Whitesburg, Hamblen Co., and 1.5 miles southwest of Bulls Gap, TN (Ulrich, 1930).

Fetzer Member (TN)

Unit Name History:
First used (Ulrich, 1924). Named (Ulrich, 1930). Revised to member of Blockhouse shale (Neuman, 1955). Revised (Walker and others, 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