Pleistocene sediments in the Saskatoon area are subdivided into the Sutherland and Saskatoon Groups on the basis of dolomite content of tills. The Sutherland Group generally comprises one till, but locally it comprises a lower and upper till. The overlying Saskatoon Group comprises two tills, which are in ascending order the Floral and Battleford Formations.Forty feet of partial leaching of carbonates in till in the upper part of the Sutherland Group suggests a hiatus of interglacial proportions. The hiatus between the deposition of the Floral and Battleford Formations is Mid-Wisconsin and the Battleford Formation is Woodfordian.

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