Usage:
Fairgrange Till (IN)
(†Fairgrange Till Member of Wedron Formation abandoned by the IL Geol. Survey, "type area" in IL. Included in Tiskilwa Formation of Wedron Group. See Tiskilwa.)
Geologic age:
Quaternary
Pleistocene
Wisconsinan
Type section, locality, area and/or origin of name:
Notable exposures in Coles, DeWitt, Champaign, and Piatt Cos., central IL.
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 ([ ]).