Usage:
No current usage.
(†Arch Formation, or †Arch Marble, of Evington Group (VA) considered same as Alligator Back Formation of Lynchburg Group or Archer Creek Formation of Evington Group. See Alligator Back and Archer Creek.)
Geologic age:
early Paleozoic
Type section, locality, area and/or origin of name:
Type locality: vicinity of The Arch on Norfolk and Western RR, 1 mi east of Six Mile Station, Campbell Co., south-central VA (Brown, 1953).
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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).