Erosional landforms
- Created by: Ali Bland
- Created on: 17-03-15 14:12
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- Erosional Landforms
- Corries
- An enlarged hollow on a mountainside
- It has a steep back wall (often with a pile of scree at its base)
- The hollow is generally very deep and may contain a small lake called a tarn
- The front of a corrie often has a raised rock lip which helps to explain the presence of the tarn
- Arêtes
- Arêtes are formed when two neighboring glaciers
cut back into a mountainside – each one eroding a corrie
- This leads to the knife edge ridges called Arêtes
- Arêtes are formed when two neighboring glaciers
cut back into a mountainside – each one eroding a corrie
- Pyramidal Peaks
- Formed when three of more corries erode back-to-back and the ridge becomes an isolated peak
- Glacial Trough (U-shaped valley)
- Formed when a glacier moves downhill through a valley and changes the shape from a V-shaped to a U-shaped valley
- They have steep sides and a flat bottom
- Generally straight
- Ribbon Lake
- A ribbon lake is a large, narrow lake occupying a U-shaped valley
- The water is collected from melt water and rain water after the glacier has melted
- During glaciations the glacier erodes some parts of the valley floor more than others. (Often due to different strengths of the bedrock)
- Hanging Valley
- A hanging valley is a smaller side valley left "hanging" above the ,aom u-shaped valley
- Misfit Stream
- A river that is either too large or too small to have eroded the valley m which it flows
- They run through the middle of the glacial trough
- Truncated Spurs
- Rounded areas of land which have been cut off
- They're often rounded at the top but steep at the bottom
- They are formed when glaciers move through the main valley and cut off spurs
- Corries
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