Abstract

After listing some geomorphic problems of southwestern Alberta, field evidence is described from a small area in the south part of the city of Calgary, where a boulder clay and a Pleistocene fluvial sand lie in contact, both truncated by flat erosion surfaces (presumably of Recent age). The oldest surface, which tops the local hills, is in turn dissected by still more recent erosion that cut such valleys as that of the Elbow River. The whole scene is interpreted to mean that an erosionally planed surface on Pleistocene formations now constitutes an erosionally stagnant upland.

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