USGS Visual Identifier
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Geologic Unit: Gatesburg

Usage:
Gatesburg Formation (PA*,WV*,VA*,NY)
Gatesburg Dolomite (OH)

Age:
Cambrian, Late*
Ordovician, Early(?)*



Geologic Province:
Appalachian basin*
Cincinnati arch



Areal Extent:
PA(ec)*
OH
NY
VA*
WV*

Type Locality:
Exposures on Gatesburg Ridge, Centre Co., PA (Butts, 1918).

Subunits:
Stacy Dolomite Member (PA*), Ore Hill Limestone Member (PA*,WV*,VA*), Mines Dolomite Member (PA*,WV*,VA*).

Unit Name History:
Named (Butts, 1918).
Revised and age modified (Wilson, 1952).
Extended into OH (Calvert, 1964).
Extended into NY (Wagner, 1976).
Assigned as member to Conococheague (Pierce, 1966).
Revised; Areal limits (Ryder, 1992a; 1992b).

Note: If you need more information, please contact Nancy Stamm (nstamm@usgs.gov).
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
URL http://ngmdb.usgs.gov/ngmdb/ngm_catalog.ora.html
Database project personnel
Last modified: 15-Jan-2013