It can be defined as 'the downslope movement of material under the influence of gravity'. Many instances of this can occur very suddenly (within minutes), and are triggered by undercutting by wave action at the base of the cliff.
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Types of rapid mass movement
Rock fall, rock slides, rock toppling and rotational slides and slumps.
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Rock fall
Blocks of rock, dislodged by weathering, fall to the cliff foot.
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Rock slides
Blocks of rock slide down the cliff face, especially where rocks are dipping steeply towards the sea.
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Slow movements
Creep - Extemely slow downslope movement of loose material including soil.
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Other cards in this set
Card 2
Front
Types of rapid mass movement
Back
Rock fall, rock slides, rock toppling and rotational slides and slumps.
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