Usage:
No current usage.
(†/Cuyuna series [informal] (MN) abandoned.)
Geologic age:
middle Precambrian
Type section, locality, area and/or origin of name:
Not stated by author (Leith, 1907). Described rocks from Cuyuna Range, Crow Wing Co., central MN, but did not apply geographic names to any of the formations.
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 ([ ]).