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The landforms created by glacial erosion are: Corries/cirques Arêtes

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Presentation on theme: "The landforms created by glacial erosion are: Corries/cirques Arêtes"— Presentation transcript:

1 The landforms created by glacial erosion are: Corries/cirques Arêtes
Glacial landforms The landforms created by glacial erosion are: Corries/cirques Arêtes Pyramidal peaks Glacial troughs (U-shaped valleys) Truncated spurs Hanging valleys

2 How is a corrie formed? Snow collects in a natural hollow on the side of a mountain. Over time, further snow collects in the hollow. This extra weight compresses the snow underneath, turning it into ice. rock lip The hollow is deepened and widened by the corrie glacier through the processes of abrasion and plucking. This overdeepening leads to an ‘armchair’ shape characteristic of a corrie and causes a ‘rock lip’ to be formed.

3 Formation of an arête Arêtes are ‘knife-edged’ ridges formed between two corries.

4 Formation of a glacial trough

5 Characteristics of a glacial trough
What are the characteristics of a glacial trough? steep valley sides misfit stream hanging valley Between truncated spurs are hanging valleys which have not been eroded as deeply as the main valley. The river that flows through the valley after the ice age is described as a misfit stream. Interlocking spurs are truncated as the glacier cuts straight through the landscape. wide and flat valley floor truncated spurs


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