1. A wave cut notch is formed due to erosion, such as abrasion, hydraulic action and solution, undercutting the cliff.
2. Rapid rates of continuous erosion increases the size of the wave cut notch - this means that the overlying rocks above the wave cut notch become unstable. Also weathering, such as chemical (acid rain) and biological (animals burrowing) weakens the top of the cliff. Over time the cliff becomes weakened, it then collapses and retreats, leaving material at the foot of the cliff which then gets deposited and eroded to form a wave cut platform.
3. The cliff has collapsed and retreated, which has left material (sediment) at the foot of the cliff, which forms a wave cut platform at the original high tide mark on the cliff. Erosion then occurs and begins to form another wave cut notch, weakening the current cliff - the whole process happens over and over again, it is continuous.
(SEE NOTES FOR HELPFUL DIAGRAMS)
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