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National Geologic Map Database

NGMDB

Geologic Unit: Ridgeley

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*


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 ([ ]).

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Page Last Modified: Tue Jun 3 16:26:39 2014