USGS Visual Identifier
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Geologic Unit: Nittany

Nittany Dolomite of Beekmantown Group (PA*,MD*,VA,TN)
Nittany Formation (PA,VA)

Ordovician, Early*

Geologic Province:
Appalachian basin*

Areal Extent:

Type Locality:
Type area: Nittany Valley, Centre Co., PA (Ulrich, 1911).

Unit Name History:
Named (Ulrich, 1911). Extended into TN (Prouty, 1948). Revised to Nittany formation in VA (Milici, 1963). Revised to Nittany Formation in PA (Wagner, 1966). Revised (Spelman, 1966). Overview (Berg, 1980). Overview (Faill and others, 1989).

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
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Last modified: 15-Jan-2013