Usage:
Ridgeley Member of Old Port Formation (PA*)
Ridgeley Member of Oriskany Sandstone (MD*,VA,WV)
Ridgeley Sandstone of Oriskany Group (MD*,NJ,PA*,VA*,WV*)
Ridgeley Sandstone Member of Old Port Formation (PA*)
Ridgeley Sandstone Member of Oriskany Formation (MD,PA)
Geologic age:
Early Devonian*
Type section, locality, area and/or origin of name:
Named from town of Ridgeley, Mineral Co., northeast WV (Swartz and others, 1913).
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 ([ ]).