Usage:
Riddlesburg Shale Member of Pocono Formation (PA*)
Riddlesburg Shale Member of Rockwell Formation (MD*)
Riddlesburg Shale Member of Price Formation (VA*,WV*)
Riddlesburg Member of Price Formation (VA*,WV*)
Geologic age:
Early Mississippian (Kinderhookian)*
Type section, locality, area and/or origin of name:
Type section: Exposures 1.5 mi north of Riddlesburg, Bedford Co., south-central PA (Reger, 1927).
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 ([ ]).