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National Geologic Map Database

Geologic Unit: Capron

Usage:

Capron Till Member of Winnebago Formation (IL)
Capron Member of Zenda Formation (WI)
Capron Till (MI)


Geologic age:

Quaternary (Pleistocene; Illinoian)


Type section, locality, area and/or origin of name:

Type section: Capron North section, in roadcut 3 mi north of Capron, in NE/4 SE/4 SE/4 sec. 23, T. 46 N., R. 4 E., [approx. Lat. 42 deg. 26 min. 44 sec. N., Long. 88 deg. 43 min. 34 sec. W., Capron 7.5-min quadrangle], Boone Co., central northern IL (Willman and Frye, 1970; Willman and others, 1975, IL Geol. Survey Bull., no. 95, p. 226; see also Syverson and others, 2011).
Named from village of Capron, Boone Co., central northern IL, where well-exposed in prominent north-south trending ridge through town (Willman and Frye, 1970; Willman and others, 1975, IL Geol. Survey Bull., no. 95, p. 226).
Reference section: borrow pit [about 1 mi southeast of Allens Grove], in SE/4 SW/4 SE/4 sec. 5, T. 1 N., R. 15 E., [approx. Lat. 42 deg. 33 min. 56 sec. N., Long. 88 deg. 44 min. 36 sec. W.], western edge Sharon 7.5-min quadrangle, Walworth Co., southeastern WI (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 ([ ]).