How is erosion caused by glaciers?

Glaciers form in areas that are always covered by snow, so every year more snow falls than melts, creating a build up of snow. When the snow builds up the snow on top creates a lot of pressure on the snow underneath it which causes it to recrystallize and form into solid ice over time. read more

the movement of glaciers is caused by gravity. The weight of the overlying layers of ice and snow push down on the lower layers of the glacier. This weight also causes grains of ice to partially melt and refreeze. read more

This natural process is caused by the dynamic activity of erosive agents, that is, water, ice (glaciers), snow, air (wind), plants, animals, and humans. read more