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- DictionaryIce sheet/ˈīs ˌSHēt/
noun
- 1. a permanent layer of ice covering an extensive tract of land, especially a polar region.
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- Ice sheet
Large mass of glacier ice
In glaciology, an ice sheet, also known as a continental glacier, is a mass of glacial ice that covers surrounding terrain and is greater than 50,000 km2 (19,000 sq mi). The only current ice sheets are the Antarctic ice sheet and the Greenland ice sheet. Ice sheets are bigger than ice shelves or alpine glaciers. Masses of ice covering less than 50,000 km 2 are termed an ice cap. An ice cap will ty... Wikipedia
