U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS

National Geologic Map Database

NGMDB

Geologic Unit: Swift Run

Usage:

Swift Run Formation (MD*,VA*,WV)


Geologic age:

Late Proterozoic*


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

Exposures on U.S. Highway 33, just east of Swift Run Gap, VA [now inaccessible]. Also exposed on Skyline Drive just north of the gap (Stose and Stose, 1944).
Reference section: good exposures of sericitic phyllite believed to be metatuff can be seen from entrance of Skyline Drive eastward from the gap. Exposures from Whitehall, Albemarle Co., into Sugar Hollow, make good substitute for type locality and are near the now-inaccessible type (Furcron, 1969).


AAPG geologic province:

Piedmont-Blue Ridge province*
Appalachian basin*


NGMDB

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

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 ([ ]).

Find Us:

twitter

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
Supported by the National Cooperative Geologic Mapping Program
URL: http://ngmdb.usgs.gov
Page Contact Information: Personnel
Page Last Modified: Tue Jun 3 16:31:20 2014