Lea Park Formation 1.97

The Lea Park Formation is a stratigraphical unit of Late Cretaceous age in the Western Canadian Sedimentary Basin, Canada.It takes the name from the settlement of Lea Park, Alberta, located north-west of Lloydminster on the banks of the North Saskatchewan River. It was first defined in an outcrop on the river banks, located in section 15-11-54-3W4M by J.A. Allan in 1918. The early campanian age was determined from its foraminifera and mollusks found in the formation.LithologyThe Lea Park Formation is composed of dark shale with minor siltstone.Calcite veins and ironstone concretions, as well as bentonite beds are found throughout the formation.DistributionThe Lea Park Formation reaches a maximum depth of 270m in its eastern reaches. I occurs in the sub-surface in west-central Alberta and extends eastwards through north-eastern Alberta and north-western Saskatchewan.