The only coal occurrence on the Shell property is a single coal seam approximately 1.5 metres in thickness which outcrops along Chisholm Creek within rocks of the Lower Cretaceous Skeena Group. The seam was not present in a drillhole downdip of the outcrop. No coal was encountered on Suncors property to the east, southeast and south.

The structure in the Chisholm area (swell) consists of a series of relatively undisturbed strata dipping 20 to 50 degrees east. A north-northeast trending reverse fault in the southwest separates the sediments from the volcanic basement in this area.