Deformation by Glacier-Ice at Nicholson Peninsula, N.W.T., Canada

Аннотация

Two excellent examples of sediments deformed by glacier ice occur on Nicholson Peninsula, Mackenzie District (Liverpool Bay, 69 54 N, 129 W). Sediments, topography and structure of the Peninsula are described. Altitudes in the hilly northern half attain 200-300 ft. above sea level, whereas those in the south rarely exceed 30 ft. The hills were formed either by glacier ice moved against a topographic obstruction, resulting in a large push moraine, or by the drag effect of ice moving over weak strata. Deformation could have occurred during the last ice advance or earlier, probably in a single period of deformation, but whether the ground was frozen at the time is not evident.