Usage:
Mansfield Formation (IN*)
Mansfield Formation of Raccoon Creek Group (IN)
Subunits:
(ascending) --all in IN: French Lick Coal Member, St. Meinrad Coal Member, Pinnick Coal Member, Blue Creek Coal Member, Mariah Hill Coal Member, Lead Creek Limestone Member, Shady Lane Coal Member.
Geologic age:
Pennsylvanian, Early*
Pennsylvanian, Middle*
Type section, locality, area and/or origin of name:
Named from Mansfield, Parke Co., southwestern IN (US geologic names lexicons, USGS Bull. 896, 1200).
Indiana geologists consider type area to be along Raccoon Creek, in T. 14 N., R. 6 W., southern Parke Co., southwestern IN (Shaver and others, 1986).
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 ([ ]).