USGS Visual Identifier
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Geologic Unit: Salona

Salona Formation of Trenton Group (PA*)
Salona Limestone of Trenton Group (PA)
Salona Formation (VA,WV)

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

Areal Extent:

Type Locality:
Exposures at Salona, Clinton Co., PA (Field, 1919).

New Enterprise (PA) and Roaring Spring (PA) Members

Unit Name History:
Named (Fields, 1919).
Extended into WV and revised (Kay, 1944).
Extended into VA (Kay, 1956).
Subdivided (Thompson, 1963).
Overview (Faill and others, 1989).
Overview (Ryder 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