Usage:
Gervais Formation (MN)
Gervais Formation of Coleharbor Group (ND)
Geologic age:
Quaternary (Pleistocene)
Type section, locality, area and/or origin of name:
Type section: Three Creeks section, left bank of Red Lake River, Red Lake Falls area, in NE/4 NE/4 NW/4 sec. 21, T. 151 N., R. 44 W., Red Lake Falls 15-min quadrangle, Red Lake Co., northwestern MN (Harris and others, 1974, p. 28-29).
Reference section: Moo Point section, Red Lake Falls area, in NE/4 NE/4 NW/4 sec. 19, T. 151 N., R. 44 W., Red Lake Falls 15-min quadrangle, Red Lake Co., northwestern MN (Harris and others, 1974, p. 29-30).
Named from Gervais Twp., Red Lake Co., northwestern MN (Harris and others, 1974).
AAPG geologic province:
Sioux uplift
Williston basin
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 ([ ]).