Erosional Landforms - COASTS Flashcards
Order of the Erosional landform of a headland
Headland, Caves, arch, stack and then a stump
Formation of Caves
Marine erosion widens faults in base of headland widening over time forming a cave
Formation of an arch
Cave Widens due to marine erosion and sub aerial processes, which erode to the other side of the headland creating an arch
Formation a stack
Arch continues to widen until it cannot support itself, falling under its own weight through mass movement leavening a stack as one side of the arch detached from the mainland.
Formation of a stump
Marine erosion attack the base of the slack eventually the it collapses into a stump.
What are the 4 steps of a formation of Wave- cut notch platform?
- Marine erosion attacks the base of the cliff
- Creates a notch of eroded material between high and low tide height
- Notch gets deeper and sub aerial processes weakens the cliff
- Becomes unstable and falls under its own weight through mass movement leaves behind a platform
Case study example for cave arch stack stump?
Dorset coast