GEO 110 Chapter Notes - Chapter 8: Avalanche, Firn, Global Warming
25 Jul 2016
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They move at the base of the glacier and bed rock known as basil slip. It ows along the path of least resistance. Firn: partially compacted snow that has been left for seasons, and it is blue because it is compacted that there is no air pocket in it so it absorbs all colours except blue, Surges: caused by the supply of melt water to the base of a glacier. Glacier ice: a mixture of ice rocks and particles that moves under the in uence of gravity. Folia: crystal deformation, and crystals are separated by layers made of clear or bubble ice. Stranded ice berg: melting progress pressure in ice bubble explodes, and it may cause ice to be separated so it is abandoned on the side of the valley. Moulin: during summer months where temperatures are high glaciers will melt and channel down to lower lakes and it could be as deep as 15 ft.
