What have been some of the different erosional impacts of glaciers, running water, wind, and wave action on the geomorphology of the American and Canadian West?
What will be an ideal response?
Glaciers, water, wind, and waves are each associated with distinctive landforms. Continental glaciers scoured much of Canada and the northern United States, leaving behind distinctive hills and ridges of sediment. Alpine glaciers create sharp mountain peaks and U-shaped valleys in contrast to V-shaped valleys formed by running water. In some parts of North America wind has deposited sediment to form highly fertile but erodible soils called loess, and, in other places, wind-blown soil forms large dune complexes. The western coast of North America features many dramatic landforms shaped by wave action such as sea cliffs, wavecut platforms, and sea stacks.
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