No current usage.
(†/Erie Shale (OH) replaced with Chagrin Shale. See Chagrin.)
[Preoccupied. Name previously applied to Erie Group by Emmons (1842) and Erie Clay by Logan (1863) in Lake Erie area.]
Late Devonian
Named from exposures on shores of Lake Erie from mouth of the Vermillion, [Erie Co.], to Dunkirk, [Hardin Co.], northern OH (Newberry, 1870).
Cincinnati arch
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 ([ ]).