Usage:
[?] Nokomis Sandstone Member of Glenwood Formation (IL,IA,MI,MN,WI)
[?] Nokomis Bed of Glenwood Member of St. Peter Sandstone (WI)
Geologic age:
Middle Ordovician
Type section, locality, area and/or origin of name:
Type section: exposure in west bluff of Mississippi River at Lock and Dam No.1 in Minneapolis, in NW/4 SW/4 NW/4 sec. 17, T. 27 N., R. 23 W., St. Paul quadrangle, Hennepin Co., MN. Named from Lake Nokomis (formerly Amelia Lake) 1.5 mi west of type section (Templeton and Willman, 1963).
AAPG geologic province:
Sioux uplift
Wisconsin arch
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 ([ ]).