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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.
Two valley glaciers flow around a small horn and merge together to form a larger valley glacier. Once upon a time, the larger valley glacier flowed down the whole length of the valley, carving out a U-shaped valley. The glacier is in retreat because only a portion of the glacially carved, U-shaped valley contains ice.