Coastal Landforms
- Created by: [email protected]
- Created on: 17-04-19 15:48
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- Coastal Landforms
- Headlands and Bays
- Formed due to bands of hard and soft rock on a coastline.
- Resistant rock is not eroded very quickly so is left jutting out.
- 1) Headland has a small crack which is opened up by Hydraulic Action and Abrasion.
- 2) Repeated erosion- cave forms.
- 3) Cave eventually forms an arch like Durdle Door.
- Arch eventually collapses leaving a stack, then a stump.
- Beaches
- Deposition- constructive waves
- Between the high water mark and the low water mark.
- Sand beaches are flat and wide.
- Shingle beaches- steep and narrow. Particles are heavier.
- Spits
- Formed by longshore drift.
- Swash goes in the direction of the prevailing wind.
- Backwash goes vertically straight back down to the sea.
- Sediment is carried along the coast in a zigzag shape.
- Material keeps moving past a bend in a coastline forming a hook.
- Forms a sheltered area behind the spit. Plants grow and can develop into a mud flat or salt marsh.
- Headlands and Bays
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