| Keg River Formation | |
|---|---|
| Stratigraphic range: | |
| 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″N118°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.
It takes the name from the Keg River, a tributary of 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.
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.
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]
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.
Oil is produced from the Keg River reefs in the Zama Lake and Rainbow Lake areas of north-western Alberta.
The Hay River is a large river in northern Alberta and southern Northwest Territories, Canada.
The Kiskatinaw Formation is a stratigraphical unit of Mississippian age in the Western Canadian Sedimentary Basin.
The Leduc Formation is a stratigraphic unit of Late Devonian (Frasnian) age in the Western Canada Sedimentary Basin. It takes its name from the city of Leduc, and it was formally described from the B.A. Pyrz No. 1 well in central Alberta, between the depths of 1,623.7 m (5,327 ft) and 1,807.5 m (5,930 ft), by Imperial Oil Limited in 1950. Supplementary information came from a complete section of the formation that was cored in Imperial Oil's Leduc No. 530 well between 1,633 m (5,358 ft) and 1,863 m (6,112 ft).
The Muskeg Formation is a geologic formation of Middle Devonian (Givetian) age in the Western Canada Sedimentary Basin. It extends from the plains of northwestern Alberta to northeastern British Columbia, and includes important petroleum and natural gas reservoirs in the Zama lake and Rainbow Lake areas of northwestern Alberta.
The Spirit River Formation is a stratigraphical unit of middle Albian age in the Western Canadian Sedimentary Basin.
The Baldonnel Formation is a stratigraphical unit of Carnian age in the Western Canadian Sedimentary Basin.
The Exshaw Formation is a stratigraphic unit in the Western Canada Sedimentary Basin. It takes the name from the hamlet of Exshaw, Alberta in the Canadian Rockies, and was first described from outcrops on the banks of Jura Creek north of Exshaw by P.S. Warren in 1937. The formation is of Late Devonian to Early Mississippian age as determined by conodont biostratigraphy, and it straddles the Devonian-Carboniferous boundary.
The Viking Formation is a stratigraphical unit of Cretaceous age in the Western Canadian Sedimentary Basin.
The Horn River Formation is a stratigraphic unit of Devonian age in the Western Canadian Sedimentary Basin.
The Fort Simpson Formation is a stratigraphical unit of Devonian age in the Western Canadian Sedimentary Basin.
The Beaverhill Lake Group is a geologic unit of Middle Devonian to Late Devonian age in the Western Canada Sedimentary Basin that is present in the southwestern Northwest Territories, northeastern British Columbia and Alberta. It was named by the geological staff of Imperial Oil in 1950 for Beaverhill Lake, Alberta, based on the core from a well that they had drilled southeast of the lake, near Ryley, Alberta.
The Elk Point Group is a stratigraphic unit of Early to Middle Devonian age in the Western Canada and Williston sedimentary basins. It underlies a large area that extends from the southern boundary of the Northwest Territories in Canada to North Dakota in the United States. It has been subdivided into numerous formations, number of which host major petroleum and natural gas reservoirs.
The Woodbend Group is a stratigraphical unit of Frasnian age in the Western Canadian Sedimentary Basin.
The Kakisa Formation is a stratigraphical unit of Frasnian age in the Western Canadian Sedimentary Basin.
The Winterburn Group is a stratigraphical unit of Frasnian age in the Western Canadian Sedimentary Basin.
The Slave Point Formation is a stratigraphical unit of Middle Devonian age in the Western Canadian Sedimentary Basin.
The Nahanni Formation is a stratigraphical unit of Givetian age in the Western Canadian Sedimentary Basin.
The Grosmont Formation is a stratigraphical unit of Frasnian age in the Western Canadian Sedimentary Basin.
The Prairie Evaporite Formation, also known as the Prairie Formation, is a geologic formation of Middle Devonian (Givetian) age that consists primarily of halite and other evaporite minerals. It is present beneath the plains of northern and eastern Alberta, southern Saskatchewan and southwestern Manitoba in Canada, and it extends into northwestern North Dakota and northeastern Montana in the United States.
The La Loche Formation is a geologic formation of early Middle Devonian (Eifelian) age in the Western Canada Sedimentary Basin. It is present in northeastern Alberta and northwestern Saskatchewan and was first described by A. W. Norris in 1963, who named it for a Roman Catholic Mission at Lac La Loche. Its type section is located at Contact Rapids on the Clearwater River in Saskatchewan, northwest of Lac La Loche. It is not fossiliferous.