Usage:
Bartholomew Siltstone Member of Orangeville Shale of Cuyahoga Group (PA*)
Geologic age:
Early Mississippian (Tournaisian; Kinderhookian)*
Type section, locality, area and/or origin of name:
Type locality: Bartholomew quarry section, 1 mi northwest of Littles Corner on a small run, Hayfield Twp., Crawford Co., northwestern PA (de Witt, 1951).
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 ([ ]).