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National Geologic Map Database

Geologic Unit: Slim Buttes

Usage:

Slim Buttes Formation (SD)


Geologic age:

early Tertiary (late Eocene; Duchesnean NALMA)


Type section, locality, area and/or origin of name:

Type section: Slim Buttes, Harding Co., SD.
Standard section: [along Rock Spring Trail], Slim Buttes, in NW/4 SE/4 sec. 11, T. 16 N., R. 8 E., Sheep Mountain 7.5-min quadrangle, Harding Co., Custer National Forest, northwestern SD (Malhotra and Tegland, 1960).


AAPG geologic province:

Williston basin
Sioux uplift


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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).