At the Stoddart Creek occurrence, gypsum is confined to the Devonian Burnais Formation within a small downdropped fault block that lies between the Redwall fault on the east and a smaller, less conspicuous fault on the west. The smaller fault brings the gypsum beds into juxtaposition with strata of the Upper Cambrian-Middle Ordovician McKay Group and the Middle Ordovician-Silurian Beaverfoot Formation.

Outcrops of gypsum are found chiefly in the bottoms of sink holes on the divide area between Stoddart and Shuswap creeks.