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National Geologic Map Database

Geologic Unit: Mission Canyon

Usage:

Mission Canyon Limestone of Madison Group (ID*,MT*,ND*,SD*,WY*)
Mission Canyon Limestone of Tendoy Group (MT*)
Mission Canyon Formation of Madison Group (ND)
Mission Canyon Formation (MT)
Mission Canyon magnafacies (informal)
Mission Canyon facies (informal)

For informal usage, the rank or lithologic term should not be capitalized.


Subunits:

Bull Ridge Member (MT*).


Geologic age:

Early to Middle Mississippian (Tournaisian to Visean; Osagean to Meramecian)*


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

Named from Mission Canyon, Blaine Co., MT (Collier and Cathcart, 1922).
Type locality stated to be in Little Rocky Mountains, Blaine Co., MT (Nordquist, 1953).
In Mission Canyon, in sec. 32, T. 26 N., R. 24 E., Blaine Co., MT (Knechtel, 1959).
Type section (incomplete): 295 ft thick measured on south side of Mission Canyon, in SE/4 NW/4 sec. 32, T. 26 N., R. 24 E., Blaine Co., MT (Sando and Dutro, 1974).


AAPG geologic province:

Central Montana uplift*
Montana folded belt*
Powder River basin*
Sweetgrass arch*
Wasatch uplift*
Williston basin*
Yellowstone province*


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 ([ ]).