2B.8B Subaerial Processes Work Together

    Cards (5)

    • Weathering weakens rocks above high tide mark, making mass movement easier by reducing the internal cohesion of the rock. Repeated mass movement leads to rapid coastal recession. 
    • At Overstrand, in North Norfolk, Hard Engineering coastal defences protect cliff foot from marine erosion, by hydration weathering and repeated slumping continues rapid coastal recession. 
      • Weathering processes weaken rocks between high and low tide marks making marine erosion easier and faster, increasing rates of coastal recession. 
      • Where weathering has weakened rock above high tide mark, wave cut notch will produce cliff collapse (mass movement) more quickly, leading to faster recession.
      • Many coastal slopes experience small scale fluvial erosion, as rainwater forms rills eroding gullies in the slope face, particularly in unconsolidated material.