A thin till in West-Central Saskatchewan, Canada
A thin till, commonly 1 to 10 ft thick, forms the uppermost till in an area of more than 20 000 square miles in west-central Saskatchewan. The till, named herein the Battleford Formation, is gray to light olive-gray in contrast to the underlying pale olive and pale yellow till and stratified drift. The Battleford Formation was deposited about 20 000 years ago and is separated from the underlying older drift by a disconformity whose hiatus is about 15 000 years. These dates suggest that the weathering interval prior to the deposition of the Battleford Formation is Farmdalian and that the Battleford Formation is Woodfordian.