Usage:
Lakota Formation (MT*,NE*,ND*,SD*,WY*)
Lakota Sandstone (ND*)
Lakota Formation of Dakota Group (NE,ND)
Lakota Formation of Inyan Kara Group (SD*,WY*)
Lakota Sandstone of Inyan Kara Group (SD*,WY*)
[?] Lakota Formation of Cloverly Group (MT)
Subunits:
(alphabetical): Chilson Member (MT*,SD*,WY*), Fuson Member (SD*), Minnewaste Limestone Member (SD*), Pryor Member (MT).
Geologic age:
Early Cretaceous*
Type section, locality, area and/or origin of name:
Lakota Peak, a summit on hogback range, 4 mi northwest of Hermosa, Custer Co., SD (Waage, 1959).
Reference section: in Fall River Canyon, 4 to 5 mi by road from Hot Springs, in secs. 29, 32, and 33, T. 7 S., R. 6 E., Fall River Co., SD (Waage, 1959).
AAPG geologic province:
Chadron arch*
Williston basin*
Powder River 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 ([ ]).