Muskiki Formation

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Muskiki Formation
Stratigraphic range: Late Cretaceous
Muskiki Shale.JPG
Muskiki_Shale
Type Geological formation
Unit of Smoky Group
Underlies Bad Heart Formation
Overlies Cardium Formation
Thickness up to 99 metres (320 ft)[1]
Lithology
Primary Shale
Other Sandstone
Location
Coordinates 52°47′47″N 116°53′33″W / 52.79637°N 116.89245°W / 52.79637; -116.89245 (Muskiki Formation)Coordinates: 52°47′47″N 116°53′33″W / 52.79637°N 116.89245°W / 52.79637; -116.89245 (Muskiki Formation)
Region  Alberta
Country  Canada
Type section
Named for Muskiki Lake
Named by D.F. Stott, 1963

The Muskiki Formation is a stratigraphical unit of Late Cretaceous age in the Western Canadian Sedimentary Basin.

It takes the name from Muskiki Lake and Muskiki Creek, a tributary of the Cardinal River, and was first described in an outcrop along the Thistle Creek, north of Muskiki Lake, in the Bighorn Range, by D.F. Stott in 1963.[2] The name is of Cree origin ("maskihkîy"),[3] meaning medicine.

Lithology[edit]

The Muskiki Formationis composed of shale with pebbly mudstone. Poorly sorted sandstone and concretionary beds also occur. In the western areal it becomes more silty.[1]

Distribution[edit]

The Muskiki Formation is 99 metres (320 ft) thick at its type locality at Thistle Creek. It thins out towards the south and east. It occurs in the Canadian Rockies foothills from the Highwood River in the south to the Berland River, north of the Athabasca River and into north-eastern British Columbia.[1]

Relationship to other units[edit]

The Muskiki Formationis is part of the Smoky Group. It is conformably underlain by the Cardium Formation and conformably overlain by the Bad Heart Formation.[1]

The Kaskapau Formation in northern Alberta replaces the upper Blackstone Formation, the Cardium Formation, and the Muskiki Formation.[4] Where the Kaskapau Formation includes post Cardium beds, the Muskiki is considered a member of the Wapiabi Formation.

References[edit]

  1. ^ a b c d Lexicon of Canadian Geologic Units. "Muskiki Formation". Retrieved 2009-03-05. 
  2. ^ Stott, D.F., 1963. The Cretaceous Alberta Group and equivalent rocks, Rocky Mountain Foothills, Alberta Geological Survurvey, Canada, Memoir 317
  3. ^ Cree Dictionaty. "maskihkîy". 
  4. ^ Lexicon of Canadian Geological Units. "Kaskapau Formation". Retrieved 2009-02-06.