Usage:
Odanah Member of Pierre Shale (ND*,SD*?)
Geologic age:
Late Cretaceous*
Type section, locality, area and/or origin of name: (See Canadian Lexicon)
Not designated. Named from a locality near Minnedosa, Manitoba, Canada, about 85 mi north of the ND State line (Tyrrell, 1890).
Reference section (of Pierre Shale): Pembina Mountain section, measured in sec. 24, T. 161 N., R. 57 W., Cavalier Co., ND (Gill and Cobban, 1965).
AAPG geologic province:
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 ([ ]).