Usage:
Algoman orogeny (informal) (MI,MN*)
Informal. The rank or lithologic term should not be capitalized.
Geologic age:
Late Archean*
Type section, locality, area and/or origin of name: (See Canadian Lexicon)
Named from the old western Ontario district of Algoma, Canada, in which these plutonics are well displayed and widely distributed (A.C. Lawson, Cong. Geol. Intl., 12th sess., Toronto, Canada; see also Wilmarth, 1925, USGS Bull. 769, p. 123-124).
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 ([ ]).