The surficial deposits of the Cypress Hills area consist predominantly of till, mainly in the form of ground moraine, hummocky disintegration moraine and end moraine. Glaciofluvial deposits of sand and gravel, in the form of outwash plains, kames, eskers, drumlins and terraces along meltwater channels, occur chiefly in the southeastern part of the map area. Extensive glacio-lacustrine deposits, consisting of sand with minor amounts of gravel, are confined to Glacial Lake Pakowki Basin and Glacial Lake Wild Horse Basin. Loess occurs on top of the unglaciated Cypress Hills Plateau. Aeolian sand is found immediately east of Lake Pakowki, and gravelly to silty alluvium is present in all postglacial valleys.
West, E.W. (1965): Surficial geology of the Cypress Hills area, Alberta; Research Council of Alberta, RCA/AGS Earth Sciences Report 1965-02, 14 p.