Usage:
Mona Schist (MI*)
Mona Formation (MI*)
Subunits:
(alphabetical): Lighthouse Point Member (MI*), Nealy Creek Member (MI*).
Geologic age:
Late Archean*
Type section, locality, area and/or origin of name:
Exposures on Mona Hills, southwest of Marquette, Marquette 7.5-min quadrangle, Marquette Co., Northern Peninsula, northwestern MI (Van Hise and Bayley, 1895; Gair and Thaden, 1968).
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 ([ ]).