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National Geologic Map Database

Geologic Unit: Cincinnati

Usage:

Cincinnati group (informal) (OH)

Usage of the OH Geol. Survey. The rank or lithologic term should not be capitalized.


Subunits:

(alphabetical) --all in OH: Arnheim Formation, Drakes Formation, Fairview Formation, Grant Lake Limestone or Grant Lake Formation, Kope Formation, Liberty Formation, Miamitown Shale, Saluda Formation, Waynesville Formation, Whitewater Formation.


Geologic age:

Late Ordovician


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

Type area: Cincinnati, OH.


AAPG geologic province:

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 ([ ]).