A number of coal seams of high volatile bituminous rank coal are present in the Upper Cretaceous Comox Formation in the area. Three drillholes (1948) encountered several coal seams interbedded with shale and lesser amounts of sandstone. Three to five seams of varying thickness are present. Total coal thickness ranges from 1.2 metres (5 seams, Hole No. 5) to 5.7 metres (3 main seams, Hole No. 6). The three seams in drillhole 6 occur in a section 13.9 metres thick and the seams contain a number of shale partings (0.06 metres to 0.2 metres thick). The seams occur at a depth of 130 metres to 177 metres.

The structure probably consists of a broad north trending syncline with the coal-bearing strata predominantly striking north- west and dipping 3 degrees to 10 degrees northeast.

Occidental Petroleum drilled 11 holes in 1987. Results are not published.