U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Ohio

Usage:

Ohio Shale (OH*,KY*,VA*,PA*,WV*)


Subunits:

(alphabetical): Chagrin Shale Member (OH), Cleveland Member (KY*,OH*,VA*,WV*) or Cleveland Shale Member (KY,OH), Huron Shale Member (KY*,OH*,PA*,TN*,VA*,WV*) or Huron Member (KY*,OH*,PA*,TN*,VA*,WV*), Three Lick Bed (KY*,OH*,TN*,WV*).


Geologic age:

Late Devonian (Famennian)*


Type section, locality, area and/or origin of name:

Ohio River hills, in the neighborhood of Rockville, Adams Co., OH (Andrews, 1870).


AAPG geologic province:

Appalachian basin*
Cincinnati arch*


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 ([ ]).