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Waseca Sand

Mannville Group
Stratigraphic range: Early Cretaceous
Type Geological formation
Sub-units Glauconitic Sandstone, Ostracod Beds, Ellerslie Member, Grand Rapids Formation, Clearwater Formation, McMurray Formation, Waseca Sand, Sparky Sand, General Petroleum Sand, Rex Sand, Lloydminster Sand, Cummings Member, Dina Member, Pense Formation, Cantuar Formation, Success Formation
Underlies Colorado Group
Overlies Rundle Group, Banff Formation, Wabamun Formation
Thickness up to 145 metres (480 ft)
Lithology
Primary Sandstone
Other Shale
Location
Coordinates 53°18′31″N 111°09′15″W / 53.3087°N 111.1541°W / 53.3087; -111.1541 (Northwest Mannville 1 well)
Region  Alberta,  Saskatchewan
Country  Canada
Type section
Named for Mannville, Alberta
Named by Nauss, 1945

The Mannville Group is a stratigraphical unit of Cretaceous age in the Western Canadian Sedimentary Basin.

It takes the name from the town of Mannville, Alberta, and was first described in the Northwest Mannville 1 well by A.W. Nauss in 1945.

The Mannville Group consists of interbedded continental sand and shale in the base, followed by a calcareous sandstone member, marine shale, glauconitic sandstone and salt and pepper sandstone. An additional non-marine sequence is present in north-eastern Alberta.

Bitumen is produced from the McMurray Formation at the Athabasca Oil Sands. Heavy Oil is produced from the Wabiskaw Member of the Clearwater Formation in the Wabasca oil field, and from multiple formations in the Lloydminster and Provost areas in eastern Alberta and western Saskatchewan. Natural gas is extracted from the Ostracod and Glauconite beds in southern Alberta, and light oil is extracted from the Ellerslie Member in central and southern Alberta. Multiple oil fields and gas fields tap into the Manville Group.

Total gas reserves amount to 316,799 x 106m³ in the Lower Mannville and 644,774 x 106m³ in the Upper Mannville. Recoverable oil reserves amount to 105.64 x 106m³ in the Lower Mannville and 199.20 x 106m³ in the Upper Mannville.


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