USGS Visual Identifier
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Geologic Unit: Edinburg

Edinburg Formation (VA*)
Edinburg Formation of Trenton Group (WV)

Ordovician, Middle*
Ordovician, Late
Geologic Province:
Appalachian basin*

Areal Extent:

Type Locality:
1.5 mi N. 61 E., of Edinburg, Shenandoah Co., western VA (Cooper and Cooper, 1946).

(ascending) Botetourt Limestone Member (VA), Lantz Mills (VA) and Liberty Hall (VA) Members (equivalent facies), and St. Luke Member (VA).

Unit Name History:
Named, subdivided (Cooper and Cooper, 1946).
Extended into WV, assigned to Trenton Group (Cardwell and others, 1968).
Abandoned locally (Perry, 1972).
Overview (Rader and Perry, 1976).
Age modified (Rader, 1984).
Biostratigraphic dating (Harris and others, 1994).
Revised (Epstein and others, 1995).

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