Lithology
The Redknife Formation is divided into the Jean Marie Member (base) and an upper unnamed shale unit. The Jean Marie Member is composed of argillaceous, silty and dolomitic fossiliferous limestone. The carbonates are massive east of Fort Nelson and west of the Alberta border. The upper Redknife consists of calcareous shales with silty limestone and siltstone interbeds. To the south and east, the shales grade into limestone and siltstone, and it becomes dolomitic in the Peace River arch.
The Redknife formation contains common coral and brachiopod fossils.
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