Usage:
Black Hand Sandstone Member of Cuyahoga Formation (OH*)
Black Hand Member of Cuyahoga Formation (OH*)
Black Hand Sandstone (OH*)
Black Hand Formation (OH*)
Geologic age:
Early Mississippian (Tournaisian; early Osagean)*
Type section, locality, area and/or origin of name:
Named from exposures at Black Hand, Licking Co., central OH (Hicks, 1878).
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 ([ ]).