Keg River Formation

Keg River Formation
Keg River Formation
Stratigraphic range: Givetian PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Underlies	Muskeg Formation
Overlies	Chinchaga Formation
Thickness	up to 300 metres (980 ft)
Lithology
Primary	Dolomite, limestone
Location
Coordinates	59°10′21″N 118°44′54″W / 59.1725°N 118.7482°W
Region	Alberta
Country	Canada
Type section
Named for	Keg River
Named by	J. Law
Year defined	1955

The Keg River Formation is a stratigraphic unit of Givetian age in the Western Canada Sedimentary Basin.

Description

It takes the name from the Keg River, a community along the Peace River, and was first described in the California Standard Steen River 2-22-117-5W6M well (situated north of Zama Lake) by J. Law in 1955.

Lithology

The Keg River Formation is composed of dark dolomite with intercrystalline or vuggy porosity and wackestone limestone. ^[1] The Rainbow Member and upper Keg River Member are reef formations deposited in the Rainbow, Zama and Bitscho sub-basins.

Distribution

The Keg River Formation occurs in the subsurface from northeastern to northwestern Alberta and its southern border is defined by the Peace River Arch. It varies in depth from 10 metres (30 ft) to 300 metres (980 ft).^[1]

Relationship to other units

The Keg River Formation is conformably overlain by the Muskeg Formation and unconformably overlays the Chinchaga Formation.^[1]

It is equivalent to the Pine Point Formation, Hume Formation and Nahanni Formation in north-eastern British Columbia and the Northwest Territories and to the Winnipegosis Formation in Saskatchewan and eastern Alberta.

Economic geology

Petroleum geology

Oil is produced from the Keg River reefs in the Zama Lake and Rainbow Lake areas of north-western Alberta.

References

^ ^a ^b ^c ^d Lexicon of Canadian Geologic Units. "Keg River Formation". Archived from the original on 2009-04-16. Retrieved 2009-03-01.

[lexicon-1] Lexicon of Canadian Geologic Units. "Keg River Formation". Archived from the original on 2009-04-16. Retrieved 2009-03-01.

[1]

v t e Western Canada 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
Fort Nelson area	Wapiti GRP Kotaneelee FM Dunvegan FM Ft. St. John GRP Sully FM SikanniFM Buckinghorse FM Scatter FM Belloy FM Rundle GRP Debolt FM Shunda FM Pekisko FM Banff FM Exshaw FM Kotcho FM Tetcho FM Trout River FM Kakisa FM Redknife FM Jean Marie MBR Fort Simpson FM Horn River FM Muskwa FM Waterways FM Slave Point FM Watt Mountain FM Muskeg FM Sulphur Point FM Presqu'ile FM Pine Point FM Keg River FM Chinchaga FM Canadian Shield
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