how glaciers move
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basil slip
The whole glacier is moving down the hill as one piece
rates of glacial movement
different glaciers move at different rates. some flow so slowly that trees and other vegetation grow in the debris in their surface. others can move several meters a day
plasticity
involves movement within the ice under enough high pressure the normally brittle ice begins to distort and change shape --- causing it to flow
glacial flow
movement of glaciers 1. Plastic Flow: gravity's pressure causes it to move 2. Basal Slip: slip of ice along the ground - tension during movement can create crevasses