Usage:
Vulcan Iron-Formation of Menominee Group of Marquette Range Supergroup (MI*-local)
Notable exposures in Menominee Range, Northern Peninsula.
Subunits:
(alphabetical) --all in MI*: Brier Slate Member, [/?]Curry Iron-Bearing Member, Loretto Slate Member, [/?]Traders Iron-Bearing Member.
Geologic age:
Paleoproterozoic*
Type section, locality, area and/or origin of name:
Named from exposures in vicinity of West Vulcan, Menominee district [Dickinson Co.] Northern Peninsula, northwestern MI (Van Hise, 1899; see also US geologic names lexicons, USGS Bull. 896, 1200).
AAPG geologic province:
Lake Superior region*
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 ([ ]).