Usage:
Liberty Hall Formation (VA*)
Liberty Hall lithofacies (informal) in Edinburg Formation (VA-local)
For informal use, the rank or lithologic term should not be capitalized.
Geologic age:
Late Ordovician (Mohawkian; Turinian)*
Type section, locality, area and/or origin of name:
Type area: exposures on east side of Massanutten syncline in vicinity of Lexington and Natural Bridge, VA. Named from old historic ruin constructed on and of this rock (Campbell, 1905).
AAPG geologic province:
Appalachian basin*
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 ([ ]).