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Usage:
[?] Fairgrange Till of Wedron Group (IN)
(†Fairgrange Till Member of Wedron Formation abandoned by the IL Geol. Survey, "type area" in IL. Sediments 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 ([ ]).