Eskers Near the Casement Glacier, Alaska

Abstract

A series of eskers and esker systems in front of the Casement Glacier, Alaska, were examined in the field in 1962. The same eskers were mapped by photogrammetric methods from aerial photography taken in 1948 and 1963. Comparisons between the 1948 and 1963 maps of the eskers indicate that some of the eskers originated as the deposits of englacial or supraglacial streams and were subsequently let down on to the subglacial floor.