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National Geologic Map Database

Geologic Unit: Geneva

Usage:

Geneva Dolomite (IN*)
Geneva Limestone (IN*)
Geneva Dolomite Member of Grand Tower Limestone (IL)
Geneva Dolomite Member of Jeffersonville Limestone of Muscatuck Group (IN)


Geologic age:

early Middle Devonian (Eifelian)


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

Named from Geneva, Shelby Co., IN (US geologic names lexicons, USGS Bull. 896, 1200).
Reference sections: along Big Camp Creek, in NE/4 NE/4 SW/4 sec. 13, T. 4 N., R. 8 E., Jefferson Co., IN, and Berry Materials Corp. quarry at North Vernon, in NE/4 sec. 34, T. 7 N., R. 8 E., Jennings Co., IN (Shaver and others, 1986).


AAPG geologic province:

Cincinnati arch*
Illinois 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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).