Presentation on theme: "The landforms created by glacial erosion are: Corries/cirques Arêtes"— Presentation transcript:
1The landforms created by glacial erosion are: Corries/cirques Arêtes Glacial landformsThe landforms created by glacial erosion are:Corries/cirquesArêtesPyramidal peaksGlacial troughs (U-shaped valleys)Truncated spursHanging valleys
2How 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 lipThe 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.
3Formation of an arêteArêtes are ‘knife-edged’ ridges formed between two corries.
5Characteristics of a glacial trough What are the characteristics of a glacial trough?steep valley sidesmisfit streamhanging valleyBetween 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 floortruncated spurs