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cirque glacier a glacier occupying a hollow bowl-like area which is usually smaller and found at higher altitudes
valley glacier a cirque glacier which has begun to flow down through a valley
piedmont glaciers valley glaciers which have flowed down the entire valley and have begun to stretch out on flat land
continental glacier a glacier covering a large mass of land eg) Antartica
basal slip where a glacier simply slides across the rock at its base
plastic flow is when the ice bends and flows over uneven rock surface beneath it, occurring where . The weight of the glacier creates horizontal layers and the upper and middle layers of the glacier move faster than the bottom layer, which is slowed down by friction.
plucking the tearing away of blocks of rock that have become frozen onto the base and sides of glacier
abrasion the friction of the glacier's load and the ice against the bedrock
nivation the process of freeze-thaw action under the snow which weakens the rock and enlargens a hollow
firn layers of snow compressed by additional layers which become a glacier
bergschrund a deep crevasse formed when a glaciers moves forward and part of it remains and it breaks apart
rotational slide when ice moves forward, it twists around a central point
tarn a lake which forms in a small hollow in the side of a valley
pyramidal peaks when three or more cirques meet at a mountain summit, their back walls form a steep-sided pyramidal shaped feature
u-shaped valleys well developed glacial valleys
truncated spurs formed when a glacier erodes the heads of interlocking spurs
hanging valleys smaller u-shaped valleys formed by tributary glaciers
glacial stairway a valley which descends in sudden drops
rock basins hollows in the rock formed by differential erosion which are filled with water
paternoster lakes successive rock basins all linked by a stream of water which flows through the valley
fjord a glacial valley which has become flooded by the sea
morraines materials transported by a glacier
drumlin small oval-shaped hills of till or boulder clay formed over the course of two ice-ages
Created by: serrraphina
Popular Geography sets




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