collapse for a number of reasons, including the rate and type of
acting upon the front edge of the cliff or the cliff face,
and the rate and type of erosion occurring at the cliff base. These 2
processes are dependent upon various factors including:
Cliffs can collapse in a number of different movements, called MASS MOVEMENTS;
Here, water can build up in soils and add weight to it. The material moves down slope along a curved surface, leaving behind an exposed scarp face below the head of the slump, and producing a hummocky toe at the foot.
Here, large and small fragments of rock are continually weathered and eroded until they separate and fall from the cliff as whole parts. In Britain this is often due to freeze thaw weathering.
Where rocks are laid down in beds that slope (dip) down towards the sea whole layers can slide down slope along a slide plane.
This is where saturated soil and weak rock flows down a slope and produces a lobe - sometimes called a solifluction lobe.
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