Usage:
Ramsay Formation (MI*)
Geologic age:
Precambrian (Neoarchean; late Archean)*
Type section, locality, area and/or origin of name:
[Type locality]: exposures extend southward from edge of village of Ramsay along west side of Black River, in SW/4 sec. 13, NW/4 sec. 24, and within area 1,000 ft (330 m) south and west of northeast corner of sec. 23, T. 47 N., R. 46 W., [Bessemer 7.5-min quadrangle], western Gogebic Co., Northern Peninsula, northwestern MI (Schmidt, 1976).
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 ([ ]).