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Page 1

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Introduction
This leaflet has been designed to help the general public to understand what is happening
on the Purbeck coast and how landforms have been created through specific processes and
features of the coast. I have outlined the main causes and features of coastal processes and
how these relate to…

Page 2

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Erosion
Erosion is one of the main contributing factors
for coastal features. It is the first part of
longshore drift which in simple terms picks
sediment up from one part of the beach and
moves it down the coast to be deposited. The
erosion can happen in one or more…

Page 3

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Transport
Transport is the movement of the
eroded material before it is deposited.
Transport is usually by the sea water. It
moves up and down the beach
diagonally. The swash is where the wav
moves out towards the land. This is
done at an angle depending on the
location and…

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Mass movement is where large areas of rock
are moved because of a process. Slumping is
a very common cause of movement and is
often referred to as a rotational slip. The
geology of the rock is also partly behind this
landform as well. When two different rock
types are…

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One example of this is Lulworth Cove. It is
located in the Jurassic Heritage site in the
village of Lulworth. The cove has formed
because of the concordant coastline. The
rocks that provide more resistance towards
erosion are still present and are shaped in
rows. The softer Purbeck limestone and…

Page 6

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headland. This piece of rock was battered by differential erosion and came through a series
of events. To start with the hydraulic action of the waves would cause cracks to form in the
soft rock. This crack would then widen to create a cave. These can be seen all along…

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