Usage:
Fence River Formation of Menominee Group of Marquette Range Supergroup (MI*-local)
Notable exposures in northeastern Iron Co., Northern Peninsula.
Geologic age:
Paleoproterozoic*
Type section, locality, area and/or origin of name:
Only known exposure is in SE/4 SE/4 sec. 21, T. 45 N., R. 31 W., [Iron Co.], Northern Peninsula, northwestern MI. Named from Fence River, which crosses magnetic belt 1,100 ft south of Sholdeis exploration, in sec. 21, T. 45 N., R. 31 W. (Gair and Wier, 1956).
AAPG geologic province:
Lake Superior region*
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 ([ ]).