Usage:
Dorr Run shale (informal, unranked) in Allegheny Formation (OH)
Informal. The rank or lithologic term should not be capitalized.
Geologic age:
Middle Pennsylvanian
Type section, locality, area and/or origin of name:
Type section: in abandoned strip mine, in SW/4 NW/4 sec. 31, Ward Twp., Hocking Co., OH. Entire section includes strata exposed along side road in SE/4 NW/4 sec. 31. Named from exposures along Dorr Run in Athens, Hocking, and Perry Cos. (Sturgeon and Merrill, 1949).
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 ([ ]).