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Corrie Formation - Coggle Diagram
Corrie Formation
Erosion
- Plucking is when ice freezes on to bedrock
- pulling loose rock away from the landscape, making it steeper.
- Abrasion is when the angular rock embeded in the ice
- grinds the landscape making it deepers
- freeze thaw weathering when water in cracks in the rock freezes, expands and contracts weakening the rock until fragments break off.
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Lochan and example
- The lip traps water as it melts, leaving a lochan
- e.g corrie cas, carirngorms.
Conditions
- Snow accumulates in north facing mountain hollows
- when more snow falls in winter than melts in the summer.