The Wilson Kettle marl occurrence is located 1.3 kilometres north of the Skeena River, 5 kilometres northeast of Cedarvale.

The oval deposit underlies a dry lake bed 170 metres long and 100 metres wide. It is bisected by a small stream entering on the north and draining to the south toward the Skeena River. It is not known if the lake bed is now permanently dry or whether it floods periodically. The deposit is within a depression in the surrounding glacial drift measuring 500 by 300 metres. This depression is probably a kettle formed during the last glacial retreat.

The marl is white to light grey to brown, at least 0.5 metre thick and is overlain by 0.5 metre of dark brown to black wet peat in the middle of the northeast end of the deposit. A sample analyzed as follows in per cent (Geological Fieldwork 1989, page 496): CaO 42.68, MgO 0.86, SiO2 8.12, Al2O3 1.80, Fe2O3 0.48, MnO 0.03, TiO2 0.05, Na2O 0.55, K2O 0.11, P2O5 0.05, Sulphur 0.38, LOI 45.34.

Local residents reported that a small beaver dam at the southern end of the area gave way and exposed approximately half a metre of white to light grey marl. This indicates that the marl deposit may extend the 170 metre length of the kettle, but its depth is unknown.

The Wilson Kettle marl is best described as a seepage-ponded deposit. The site appears to be a kettle depression which collects water and favours the deposition of marl. It appears to be only intermittently wet, if flooded at all, and is covered by grasses. It is probably in the later stages of marl development. The Wilson Kettle deposit contains marl of good quality with only a small percentage of contaminants, but further sampling is needed to determine its dimensions and overall quality. A maintained all-weather road passes within a kilometre of the deposit (Geological Fieldwork 1989).