Glacial Movement
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To start off, we should be able to define what a glacier is. A glacier is a large mass of ice formed by the physical transformation of snow that moves. Glaciers move due to gravity and the force of their own weight. Glaciers are created when snow thaws and then freezes again, becoming a granular type of ice called neve or firn. Neve accumulates and compacts due to pressure of snow and ice above it. Just to repeat, a neve/firn is rethawed, granulated ice.
Glacial Movement A glacier is not a single solid mass, with every piece moving the same speed at the same time. Like rivers, some sections flow faster and other sections flow slower. The center of glaciers flows more quickly than the sides and bottom of the mass. The friction of the bottom and sides grinding against the land causes those sections to slow down, unlike the much freer center. Here is a video explaining further glacial movement. Hope you enjoy music! https://www.youtube.com/watch?v=xRZaDJxFjIA Other types of Glacial Movement Glacial surge: bottom of a glacier detaches from the rock floor and moves rapidly, often down a valley Basal slip: bottom of glacier sliding along the surface
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