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National Geologic Map Database

Geologic Unit: Louisiana

Usage:

Louisiana Formation of Sulphur Springs Group (MO)
Louisiana Limestone (IA,MO*)
Louisiana Limestone Member of New Albany Shale of Knobs Group (IL)


Geologic age:

Late Devonian*


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

Exposures in bluffs of the Mississippi River, Louisiana, Pike Co., MO. Named from Louisiana (Keyes, 1892).


AAPG geologic province:

Illinois basin
Iowa shelf
Lincoln anticline*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 ([ ]).