Usage:
Jessup Formation (IN,OH)
Subunits:
Cloverdale (IN), Butlerville (IN), Wilshire (IN,OH), Hillery (IN), and Brookston (IN) Till Members; Blackford (IN,OH), and Mahomet (IN) Members
Geologic age:
Pleistocene (Illinoian)
Type section, locality, area and/or origin of name:
Type section: cutbank exposure along south side of small tributary of Strangers Branch, 5 mi northeast of Jessup, in center SE/4 sec. 2, T. 14 N., R. 7 W., Catlin quadrangle, Parke Co., west-central IN (Wayne, 1963).
Reference sections also designated (Wayne, 1963).
AAPG geologic province:
Illinois 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 ([ ]).