Bluesky Formation

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Bluesky Formation Stratigraphic range: Lower Albian PreЄ Є O S D C P T J K Pg N
Bluesky Sandstone
Type	Geological formation
Unit of	Fort St. John Group
Underlies	Wilrich Member
Overlies	Gething Formation
Thickness	up to 46 metres (150 ft)^[1]
Lithology
Primary	Sandstone
Location
Coordinates	56°02′39″N 118°07′39″W / 56.0442°N 118.1274°W / 56.0442; -118.1274 (Bluesky Formation)
Region	Western Alberta
Country	Canada
Type section
Named for	Bluesky, Alberta
Named by	Peter C. Badgley, 1952

The Bluesky Formation is a stratigraphic unit of Lower Cretaceous age in the Western Canada Sedimentary Basin. It takes the name from the hamlet of Bluesky, and was first described in Shell's Bluesky No. 1 well by Badgley in 1952.^[2]

Lithology

The formation is composed of sandstone which can be quartzose or contain chert grains.^[1] It is very porous and contains heavy oil in the Peace River area. Gas is produced from the formation in central Alberta.

Distribution

The Bluesky Formation reaches a thickness of 46 meters (151 ft) in the Pouce Coupe area, and thins out toward north and west. Thin sands can be found in the Peace River area.

Relationship with other units

Although some early workers included the Bluesky Formation in the Bullhead Group, it is usually classified as the basal unit of the Fort St. John Group.^[3] It is conformably overlain by the Wilrich Member of the Spirit River Formation and conformably underlain by the Gething Formation. Northeast of the town of Peace River it was deposited unconformably on Mississippian limestone. It is equivalent with the Glauconitic Sandstone of the Mannville Group in central and southern Alberta, as well as with the Wabiskaw Member of the Clearwater Formation in the eastern part of northern Alberta.

References

↑ 1.0 1.1 Lexicon of Canadian Geological Units. "Bluesky Formation". Retrieved 2009-02-06.
↑ Badgley, Peter C., 1952. Notes on the subsurface stratigraphy and oil and gas geology of the Lower Cretaceous series in central Alberta (Report and seven figures); Geological Survey of Canada, Paper No. 52-11, 12 p.
↑ Mossop, G.D. and Shetsen, I., (compilers), Canadian Society of Petroleum Geologists and Alberta Geological Survey (1994). "The Geological Atlas of the Western Canada Sedimentary Basin, Chapter 19: Cretaceous Mannville Group of the Western Canada Sedimentary Basin". Retrieved 2013-08-01.

v t e 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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