U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Thorofare Mountain

Usage:

Thorofare Mountain Formation of Lynchburg Group (VA)
Thorofare Mountain Formation of Fauquier Group (VA*)


Geologic age:

Late Proterozoic*


Type section, locality, area and/or origin of name:

Exposures on and immediately east of Thorofare Mountain, Brightwood 7.5-min quadrangle, Madison Co., VA (Wehr, 1985).


AAPG geologic province:

Piedmont-Blue Ridge province*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).