Usage:
Chagrin Shale (OH*,WV*)
Chagrin Shale Member of Ohio Shale (OH)
Subunits:
Three Lick Bed (OH).
Geologic age:
Late Devonian (Famennian)*
Type section, locality, area and/or origin of name:
Exposures on Chagrin River, Cuyahoga Co., northern OH (Cushing, 1931).
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 ([ ]).