The name Stoddart formation is here proposed for a succession of late Paleozoic strata lying above the Rundle limestone with apparent conformity in Pacific Fort St. John No. 23 gas well. The overlying formation is usually referred to as Permo-Pennsylvanian, but the precise age is unknown.
The formation can be divided into a lower unit 1,250 feet thick which is predominantly clastic, and an upper unit 910 feet thick, mainly of carbonate rocks.
No fossil evidence of age is available. In other wells the Stoddart formation is represented only in part, and in the type well section the Stoddart may have suffered some erosion.