Usage:
Carmi Member of Equality Formation (IL)
Geologic age:
Pleistocene (Wisconsinan Age)*
Type section, locality, area and/or origin of name:
Type section: along Crooked Creek, 8 km northeast of Carmi, in NE/4 SW/4 sec. 21, T. 4 S., R. 10 E., White Co., southeastern IL (Willman and Frye, 1970).
AAPG geologic province:
Illinois basin
Wisconsin arch
Michigan basin
Cincinnati arch
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 ([ ]).