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National Geologic Map Database

Geologic Unit: Minnekahta

Usage:

Minnekahta Limestone (CO*,MT*,NE*,ND*,SD*,WY*)
Minnekahta Limestone Member of Goose Egg Formation (CO*MT*,WY*)
Minnekahta Member of Salt Fork Formation (NE)


Geologic age:

Early to Middle Permian (late Kungurian to early Roadian)*


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

Type locality: region near the hot springs originally known as "Minnekahta" by the Dakota Indians, [Fall River Co.], western SD (Darton, 1901).


AAPG geologic province:

Chadron arch*
Denver basin*
Green River basin*
Powder River basin*
Williston basin*
Wind 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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).