Glacial Erosion Landforms

A mindmap of glacial erosion landforms - including: U-shaped valleys, trucated spurs, aretes, pyrimidal peaks, corries, ribbon lakes etc

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  • Created by: Julia
  • Created on: 29-04-13 17:36
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  • Glacial Erosion Landforms
    • Corries
      • a round hollow in a hill side
        • tarn/corrie lake is often formed
      • extend backwards
        • erosion by ice
          • growth= narrow ridge separates 2 encroaching corrie headwalls
            • a ridge between 2 corries
    • Arete
      • a ridge between 2 corries
    • Pyramidal Peak
      • Sharp peak formed where the ridges separating 3 or more corries meet
    • U- shaped valley
      • Truncated Spurs
        • Interlocking Spurs
          • ridges of land form in its upper course which jut into the river
        • Glaciers cut through interlocking spurs leaving truncated spurs
      • ribbon lakes
        • forms in a hollow where glacier deeply eroded- less resistant rock
          • behind a wall of moraine
        • large, narrow lake
        • glacier retreats-depeens meltwater= lakes
          • forms in a hollow where glacier deeply eroded- less resistant rock
            • behind a wall of moraine
      • earlier a V-shaped valley
        • glacier erodes sides and floorof river valley = deepening, widening, straightening
          • ice melts= U-shaped valley
            • later rivers = misfit streams
              • ribbon lakes
                • large, narrow lake
                • glacier retreats-depeens meltwater= lakes
        • Hanging Valley
          • U-shaped valleys ending with a waterfall at the cliff-face

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