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Coastal landscapes - high energy coastline, Dorset, image, image, _com…
Coastal landscapes - high energy coastline, Dorset
Background
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Sediment input from shoreline erosion is 200,000m3
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Geology
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Foreland
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Strong due to well compressed rocks, stronger structure and the horizontal bedding planes
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Formation of Durdle Door
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Tidal range determined the height of the erosion at the base of the cliff and so the size of the initial cabe
Wabe action eroded soft Wealden coat behind the limestone until an arch was left in the Portland limestone
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