The Mannville Group is a stratigraphical unit of Cretaceous age in the Western Canadian Sedimentary Basin.
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.
[6] The Mannville Group reaches a thickness of 145 feet (40 m) in its type locality.
It occurs in the sub-surface in central Alberta, extending east-west from Edmonton to Lloydminster and north-south from the Deep Basin to the United States border.