Where are the contours for the GIS data of the Atlas of Western Canada Sedimentary Basin?
We decided not to put the effort into re-editing and publishing these elements. Instead we chose to publish the grid data on which the contours were based because we thought these would be more flexible for people. The reasoning was that any surface software package or GIS can generate contours for a given grid, at whatever interval the user needs. You can find the grids here.