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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.
Glaciers cover about 10 percent of Earth's land surface. Continental glaciers cover nearly 5 million square miles of Antarctica's 5.1 million square miles, with an average thickness of 7,000 feet. Greenland and Patagonia also have huge expanses of continental glaciers.