1. How Is
The
Coast
Eroded By
Wave
Action

2. All rocks have lines of weakness
All rocks have lines of weakness. The sea and its waves use hydraulic action,abrasion, attrition and solution to erode along any lines of weakness. Undercutting takes place all around the headland.

3. Lines of weakness

4. These lines of weakness get enlarged and develop into small sea caves.

5. A little sea cave

6. The caves are deepened and widened on both sides of the headland until eventually the sea cuts through the headland, forming an arch.

7. An arch

8. The rock at the top of the arch becomes unsupported as the arch is enlarged, eventually collapsing to form a stack.

9. A Stack

10. The stack gets eroded until only a stump remains.

11. Couple of stumps

12. Over time the stump will disappear.
As the headland retreats under this erosion, the gently sloping land at the foot of the retreating cliff is called a wave-cut platform

13. A wave-cut platform

14. geography/physical/coastal_landscapes1_rev.shtml
The End
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Informaton from:
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