Stoddart Group

Stoddart Group Stratigraphic range: Mississippian to Pennsylvanian PreЄ Є O S D C P T J K Pg N
Type	Geological formation
Sub-units	Taylor Flat Formation Kiskatinaw Formation Golata Formation
Underlies	Ishbel Group, Prophet Formation
Overlies	Debolt Formation
Thickness	up to 660 metres (2,170 ft)^[1]
Lithology
Primary	Limestone, Sandstone, Shale
Other	Dolomite, siltstone, coal, anhydrite
Location
Coordinates	56°13′08″N 120°48′00″W / 56.219°N 120.800°W / 56.219; -120.800 (Stoddart Group)Coordinates: 56°13′08″N 120°48′00″W / 56.219°N 120.800°W / 56.219; -120.800 (Stoddart Group)
Region	Alberta
Country	Canada
Type section
Named for	Stoddart Creek
Named by	A.T.C. Rutgers, 1958.

The Stoddart Group is a stratigraphical unit of Mississippian to Early Pennsylvanian age in the Western Canadian Sedimentary Basin.

It takes the name from the Stoddart Creek, a creek that flows into Charlie Lake north of Fort St. John, and was first described in well Pacific Fort St. John #23 (at depths from 2000 to 2600m) by A.T.C. Rutgers in 1958.

Lithology

The Formation is composed of both carbonate and clastic facies. ^[1]

Distribution

The Stoddart Group reaches a maximum thickness of 660 metres (2,170 ft) in the sub-surface north of Fort St. John in north-eastern British Columbia. It is present in the sub-surface from the foothills of the Northern Rockies and eastwards into the Peace River Country in north-western Alberta.^[1]

Subdivisions

The Stoddart Group is composed of the following formations, from top to bottom:

Sub-unit	Age	Lithology	Max. Thickness	Reference
Taylor Flat Formation	Early Pennsylvanian	limestone, dolomite, occasional sandstone, calcareous shale	152 m (500 ft)	^[2]
Kiskatinaw Formation	Chesterian	quartzose sandstone, dark grey shale, rare carbonate	183 m (600 ft)	^[3]
Golata Formation	late Meramecian-Chesterian	fossiliferous limestone, shales, occasional siltstone, coal and anhydrite	50 m (160 ft)	^[4]

Relationship to other units

The Stoddart Group is overlain by the Ishbel Group in the foothills and the Prophet Formation in the northern plains; it conformably overlays the Debolt Formation.^[1]

It can be correlated with the Tunnel Mountain Formation, the Kananaskis Formation, the Mattson Formation and the Mount Head Formation of the southern Canadian Rockies, and with the Amsden Formation in Montana.

References

1 2 3 4 Lexicon of Canadian Geologic Units. "Stoddart Group". Retrieved 2009-03-01.
↑ Lexicon of Canadian Geologic Units. "Taylor Flat Formation". Retrieved 2009-12-21.
↑ Lexicon of Canadian Geologic Units. "Kiskatinaw Formation". Retrieved 2009-12-21.
↑ Lexicon of Canadian Geologic Units. "Golata Formation". Retrieved 2009-12-21.

Western Canadian Sedimentary Basin

Hydrocarbon history	Oil sands and heavy oil Frontier exploration and development Natural gas liquids Natural gas

Depositional regions	Southern Alberta Central Alberta Northwestern Alberta Plains South-central Canadian Rockies foothills North-east Plains North-central foothills Liard River Fort Nelson Northern Rocky Mountains Fort St. John Saskatchewan Western Manitoba

Northwest plains	Paskapoo FM Scollard FM Wapiti GRP Smoky GRP Puskwaskau FM Badheart FM Muskiki FM Cardium FM Kaskapau FM Pouce Coupe MBR Doe Creek MBR Dunvegan FM Fort St. John GRP Shaftesbury FM Peace River FM Spirit River FM Bullhead GRP Bluesky FM Gething FM Cadomin FM Nikanassin FM Fernie GRP Rock Creek MBR Poker Chip Shale Nordegg MBR Schooler Creek GRP Baldonnel FM Charlie Lake FM Halfway FM Doig FM Montney FM Belloy FM Stoddart GRP Taylor Flat FM Kiskatinaw FM Golata FM Rundle GRP Debolt FM Shunda FM Pekisko FM Banff FM Exshaw FM Wabamun FM Trout River FM Kakisa FM Redknife FM Jean Marie MBR Woodbend GRP Irteton FM Fort Simpson FM Leduc FM Duvernay FM Cooking Lake FM Beaverhill Lake GRP Waterways FM Swan Hills FM Fort Vermilion FM Elk Point GRP Watt Mountain FM Gillwood MBR Presqu’ile FM Sulphur Point FM Pine Point FM Muskeg FM Zama MBR Black Shale Keg River FM Rainbow MBR Chinchaga FM Cold Lake FM Ernestina FM Basal Red Beds Granite Wash Canadian Shield

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