USGS Visual Identifier
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Geologic Unit: Shelton

Usage:
Shelton Granite Gneiss (NC)
Shelton Formation (VA)

Age:
Ordovician
Silurian
Geologic Province:
Piedmont-Blue Ridge province

Areal Extent:
NC
VA

Type Locality:
Not designated. Quarried near Shelton, Caswell Co., NC, for which it is named (Jonas, 1932).

Unit Name History:
Named (Jonas, 1928).
Areal limits (Jonas, 1932).
Revised to Formation in VA (Henika and Thayer, 1978).
NC Geol. Survey usage (Brown, 1985).
Age modified; Isotopic dating (Conley, 1985).
VA Geol. Survey usage; Isotopic dating (Rader and Evans, 1993).

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