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ice cap

geology
Also known as: ice field

Quick Summary

An ice cap is a perennial cover of ice and snow that forms on land and flows outward from its center. These are smaller versions of ice sheets, which are glaciers covering extensive landmasses like Greenland and Antarctica.123

Ice sheets and caps are primarily formed from compacted snow that recrystallizes into ice over many years. They are significant reservoirs of Earth's fresh water, with Antarctica alone holding about 91% of the world's glacier ice. During past glacial periods, like the Pleistocene Epoch, vast ice sheets covered large portions of North America and Europe. Today, the Greenland and Antarctic ice sheets are the most prominent, with glaciers originating from them calving icebergs into the ocean. The melting of these ice masses contributes to sea-level rise.23456789

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