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Difference between continental glaciers and valley glaciers? Continental glaciers are known as ice sheets and cover extensive  areas of Antarctica and Greenland. Valley glaciers come from these  ice fields or mountain glaciers and sliâ¦de down the mountainsides  like long ribbons.
How Glaciers Form. Glaciers form when more snow falls than melts each year. Over many years, layer upon layer of snow compacts and turns to ice. There are two different types of glaciers: continental glaciers and valley glaciers. Each type forms some unique features through erosion and deposition. An example of each type is pictured in Figure below. 1  A continental glacier is spread out over a huge area. It may cover most of a continent. 2  A valley glacier is long and narrow. Valley glaciers form in mountains and flow downhill through mountain river valleys. (A) The continent of Antarctica is covered with a continental glacier. (B) A valley glacier in the Canadian Rockies.