Usage:
Farmers Creek Member of Hopkinton Dolomite (IA)
Farmers Creek Member of Hopkinton Formation (IL)
Geologic age:
early Silurian (Llandovery)
Type section, locality, area and/or origin of name:
Type section: Schwenker quarry, near center of Farmers Creek Twp., 4.75 km west-northwest of [Fulton], in NE/4 SW/4 sec. 26, T. 85 N., R. 2 E., Jackson Co., IA (Johnson, 1983).
AAPG geologic province:
Iowa shelf
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 ([ ]).