During the last ice age, a continental glacier covered much of the northern united states.
A glacier is a vast, perpetual accumulation of crystalline ice, snow, rock, sediment, and sometimes liquid water that originates on land and flows down slope due to its own weight and gravity. Glaciers are massive accumulations of snow that have been compacted into massive sheets of ice.
The majority of glaciers formed during the previous ice age. Glaciers are enormous bodies of ice that move slowly. Glaciers occur on land and are composed of falling snow that has been compacted into ice over many generations. Glaciers can be as long as a football field or more than 100 miles in length.
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