Clarksville Member of Waynesville Formation of Cincinnati group (informal) (OH)
[?] Clarksville Shale (IN,KY,OH)
(informal Cincinnati group is the usage of the OH Geol. Survey. The rank or lithologic term should not be capitalized.)
Late Ordovician (Cincinnatian; Richmondian)
Clarksville, Clinton Co., southwestern OH (Foerste, 1909).
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 ( ).
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