Glaciers configure the land through the processes of abrasion, weathering, passage, and deposition creating a specific landform.
A glacier is the deposition of crystallized ice, snow, and often liquid water that originates on land and moves down under the effect of its own gravity and mass.
Glaciers are formed by the action of crystalline ice that remains in the same area over a long period of time. A layer by layer deposition of snow accumulates compression to previous layers, and sometimes there is a passage of liquid that is a melted form of snow under the effect of its own mass and gravity.
Therefore, glaciers are formed by four major processes which are described above.
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