Coastal Processes and Erosion Landforms
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Transcript of Coastal Processes and Erosion Landforms
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Coastal Processes and Erosion Landforms
Caves, Arches, Stacks and StampsBy Ella, Freddie and Olivia
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CavesCaves are formed where coastlines consist of
resistant rock such as limestone. When corrosion and hydraulic action by waves occurs it creates a widening that weakens and forms a cave.
Definition: a large underground chamber, typically of natural origin, in a hillside or cliff.
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ArchIf a cave is created at a headland there is a
possibility of it deepening and widening by the sea resulting in an natural arch.
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StackA stack occurs when waves continue to erode at
the foot of the arch until the top becomes overly heavy and can no longer be supported.
Definition: a column of rock standing in the sea, remaining after erosion of cliffs.
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StumpWhen the base of the stack is battered by the
water it results in the stack collapsing leaving a stump behind.