Dating the Doig: Conodonts Constrain the Age of the Doig Phosphate Zone in Northeastern British Columbia

Summary Conodont samples from the subsurface of northeastern British Columbia allow the age of the boundary between the Montney and Doig formations in the Western Canada Sedimentary Basin to be determined, as well as the age and duration of the Doig Phosphate Zone. Initial study of conodonts collected from nine wells suggests that both the Montney-Doig boundary and the base of the Doig Phosphate Zone are diachronous. The Doig Formation has the potential to be an important source and reservoir rock for natural gas in British Columbia and Alberta, and therefore it is important to improve our understanding of the age, distribution and formation of the Doig Phosphate Zone.