USGS Visual Identifier
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Geologic Unit: Gerster

Gerster Formation (UT*)
Gerster Formation of Park City Group (NV*,UT*)
Gerster Limestone of Park City Group (NV*,UT*)

Permian, Early*
Permian, Late
Guadalupian, early*
Geologic Province:
Great Basin province*

Areal Extent:

Type Locality:
Not designated. Named from exposures in Gerster Gulch, northwest corner Gold Hill quadrangle, Tooele Co., UT (Nolan, 1930).

Unit Name History:
Named (Nolan, 1930).
Areal limits (Wardlaw and others, 1979).

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