Geography WJEC landforms

Coastal land forms from erosion

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Headlands are usually made of resistant rocks. Waves crash into these headlands and enlarge the cracks, through hydraulic action, this repeated erosion causes a cave to be formed.

Continued erosion deepens the cave and causes it to form an arch. E.g. Durdle door. Erosion continues to wear away the rock until a stack is formed. E.g. Old Harry

Stacks are then eventually worn away to give a stump. E.g. Old Harry's wife.


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