McMurray Formation
Geological formation in Alberta, Canada / From Wikipedia, the free encyclopedia
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The McMurray Formation is a stratigraphic unit of Early Cretaceous age (late Barremian to Aptian stage) of the Western Canada Sedimentary Basin in northeastern Alberta.[4] It takes the name from Fort McMurray and was first described from outcrops along the banks of the Athabasca River 5 kilometres (3.1 mi) north of Fort McMurray by F.H. McLearn in 1917.[3] It is a well-studied example of fluvial to estuarine sedimentation, and it is economically important because it hosts most of the vast bitumen resources of the Athabasca Oil Sands region.
Quick Facts Type, Unit of ...
McMurray Formation | |
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Stratigraphic range: late Barremian to Aptian | |
Type | Geological formation |
Unit of | Mannville Group |
Sub-units | Upper, Middle and Lower members |
Underlies | Clearwater Formation (Wabiskaw Member) |
Overlies | Waterways Formation, Banff Formation, Wabamun Formation |
Area | 140,000 km2 (54,000 sq mi)[1] |
Thickness | up to 60 metres (200 ft)[2] |
Lithology | |
Primary | Sand, sandstone |
Other | Silt, mud, coal |
Location | |
Coordinates | 56.995921°N 111.456612°W / 56.995921; -111.456612 (McMurray Formation) |
Region | Alberta |
Country | Canada |
Type section | |
Named for | Fort McMurray |
Named by | F.H. McLearn,1917[3] |
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