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)[1] |
Lithology | |
Primary | Dolomite, limestone |
Location | |
Coordinates | 59°10′21″N 118°44′54″W / 59.1725°N 118.7482°W / 59.1725; -118.7482 (Keg River Formation) |
Region | ![]() |
Country | ![]() |
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.
- v
- t
- e
- Oil sands and heavy oil
- Frontier exploration and development
- Natural gas liquids
- Natural gas
- 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
- Wapiti GRP
- Kotaneelee FM
- Dunvegan FM
- Ft. St. John GRP
- Belloy FM
- Rundle GRP
- Banff FM
- Exshaw FM
- Kotcho FM
- Tetcho FM
- Trout River FM
- Kakisa FM
- Redknife FM
- 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
- Paskapoo FM
- Scollard FM
- Wapiti GRP
- Smoky GRP
- Dunvegan FM
- Fort St. John GRP
- Bullhead GRP
- Nikanassin FM
- Fernie GRP
- Schooler Creek GRP
- Doig FM
- Montney FM
- Belloy FM
- Stoddart GRP
- Rundle GRP
- Banff FM
- Exshaw FM
- Wabamun FM
- Trout River FM
- Kakisa FM
- Redknife FM
- Woodbend GRP
- Beaverhill Lake GRP
- Elk Point GRP
- Canadian Shield