Usage:
Louisiana Formation of Sulphur Springs Group (MO)
Louisiana Limestone (IA,MO*)
Louisiana Limestone Member of New Albany Shale of Knobs Group (IL-southern part)
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 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 ([ ]).