Usage:
Hillery Till Member of Banner Formation (IL,IN)
Hillery Till Member of Jessup Formation (IN)
Geologic age:
Quaternary
Pleistocene
Type section, locality, area and/or origin of name:
Type section: Power Plant section, NW/4 SW/4 SW/4 sec. 21, T. 20 N., R. 12 W., Vermilion Co., east-central IL. Named from town of Hillery (Johnson and others, 1971).
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 ([ ]).