Usage:
Liberty Limestone (IN*,OH*)
Liberty Formation (OH)
Liberty Formation of Cincinnati group (informal) (OH)
(informal Cincinnati group is the usage of the OH Geol. Survey. The rank or lithologic term should not be capitalized.)
Geologic age:
Late Ordovician (Cincinnatian; Richmondian)*
Type section, locality, area and/or origin of name:
Liberty, Union Co., IN. Principal reference section: Caesar Creek Dam outcrop (Tobin, 1986).
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 ([ ]).