Usage:
Quinnesec Formation (MI*,WI*)
Subunits:
Pier Gorge Schist Member (WI).
Geologic age:
Paleoproterozoic*
Type section, locality, area and/or origin of name:
Named from Quinnesec Falls on the Menominee River, Dickinson Co., Northern Peninsula, northwestern MI. Quinnesec Falls is on some of the harder ledges of these rocks (Van Hise and Bayley, 1900). [Quinnesec Falls considered type area.]
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 ([ ]).