Coastal Landforms

  • Created by: OllieS_02
  • 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.

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