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Home > Landscape & Geology > Cliff Fall at Sea Town Dorset
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Cliff Fall, Sea Town...
This picture shows a recent fall on the west beach at Sea Town. The soft marls and rocks of the Jurassic Lower Lias Period (muddy shales banded with harder limestone) formed in a warm marine environment and are very unstable with may lines of weakness and easily eroded by wave action in rough weath...
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Cliff Fall Sea Town ...
With a further rock fall more of the cliff face is eroded away leaving a growing bank of loose shales and boulders
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Cliff fall, Sea Town...
Indent in the cliff from the rock fall
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Cliff Fall, Sea Town...
The overhanging rock shales at the top of the cliff are now less stable. The cliff face shows cracks and lines of weakness. This section of cliff is also likely to be eroded away in the near future
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Cliff Fall, Sea Town...
Further along the cliff an earlier rock fall has been compacted forming an under-cliff, The looser material has been eroded away by the sea and deposited further along the coast by the process of long shore drift
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