Swift Run Formation (MD*,VA*,WV)
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).
Piedmont-Blue Ridge province*
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 ([ ]).