Usage:
Sterling Till Member of Glasford Formation (IL)
Geologic age:
Quaternary
Pleistocene, middle
Illinoian
Type section, locality, area and/or origin of name:
Type section: the Emerson quarry section, 2 mi west of Sterling, in SE/4 NW/4 SE/4 sec. 13, T. 21 N., R. 6 E.; informally named from Sterling, Whiteside Co., IL (Frye and others, 1969).
AAPG geologic province:
Wisconsin 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 ([ ]).