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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.
Mountain glaciers flow downhill and continental glaciers flow outwards. As a moving mass of ice and snow, the ice mass is classified as a glacier. When one parts of a glacier moves more rapidly than other parts, that area becomes relatively unstable, and deep cracks or chasms (called crevasses) form in the ice.