Usage:
Coffeen Limestone Member of Bond Formation of McLeansboro group (IL-local)
Geologic age:
Late Pennsylvanian (Missourian)
Type section, locality, area and/or origin of name:
Type locality: in NE/4 NW/4 SE/4 sec. 7, T. 8 N., R. 2 W., Hillsboro quadrangle, Montgomery Co., southwestern IL. Named from village of Coffeen, 5 mi southwest of type exposure (Kosanke and others, 1960).
AAPG geologic province:
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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).