Usage:
Marcoux Formation (MN)
Marcoux Formation of Coleharbor Group (ND)
Geologic age:
Quaternary (Pleistocene)
Type section, locality, area and/or origin of name:
Type section: Clearwater section, right bank of Clearwater River, Red Lake Falls area, in NE/4 NE/4 sec. 22, T. 151 N., R. 44 W., Red Lake Falls 15-min quadrangle, Red Lake Co., northwestern MN (Harris and others, 1974, p. 30-31).
Reference sections, in Red Lake Falls area, Red Lake Falls 15-min quadrangle, Red Lake Co., northwestern MN (Harris and others, 1974, p. 31, 33-34): (1) Needles Eye section, left bank of Red Lake River, in SW/4 NE/4 SE/4 sec. 18, T. 151N., R. 43 W.; and (2) Damned House section, in SW/4 NE/4, SE/4 sec. 15, T. 151 N., R. 44 W.
Named from Marcoux Corners, [in southeastern corner] Red Lake Falls 15-min quadrangle, 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 ([ ]).