Clore Formation (IL)
Clore Formation of Pope Group (IL)
Clore Limestone (IL*,IN,KY*)
Clore Limestone of Buffalo Wallow Group (IN-subsurface)
Clore Limestone Member of Leitchfield Formation (KY)
(alphabetical) --all in IL,KY: Cora Member, Ford Station Member, Tygett Member or Tygett Sandstone Member.
Late Mississippian (Serpukhovian; late Chesterian)*
Named from Clore School, Randolph Co., IL. Typically exposed in heads of ravines along southwest side of high ridge extending from Clore School to Randolph County Farm (Weller, 1913).
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 ([ ]).