Usage:
Walworth Formation (IL,WI)
Subunits:
Foxhollow, Allens Grove, and Clinton Members
Geologic age:
Quaternary (Pleistocene)
Type section, locality, area and/or origin of name:
Type section (outcrop and subsurface; =Clinton Member type section): roadcut and test hole along Highway 15 (Beloit-Milwaukee Road), 2 mi (3.2 km) northeast of Clinton, in NE/4 SW/4 sec. 3, T. 1 N., R. 14 E., [approx. Lat. 42 deg. 34 min. 20 sec. N., Long. 88 deg. 49 min. 37 sec. W.], Clinton 7.5-min quadrangle, Rock Co., southern WI (Mickelson and others, 1984; Syverson and others, 2011).
Named from Walworth Co., southeastern WI; name credited to David M. Mickelson (Mickelson and others, 1984; Syverson and others, 2011).
Reference sections = type and reference sections of constituent members, Foxhollow, Allens Grove, and Clinton (Mickelson and others, 1984; Syverson and others, 2011).
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 ([ ]).