Concordant Coastline
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Lulworth Cove |
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Rock Structure Map - Concordant Coastline |
Quiz
What are Concordant Coastlines
A concordant coastline rock structure consists of bands of rock which run parallel to the coast.
The Coastline of Southern England, between Start Point in Devon and the Isle of Purbeck in Dorset is famous for its beautiful coastline.
It is the Jurassic coast on the English Channel, consisting of Triassic, Jurassic and Cretaceous cliffs, documenting 180 million years of geological history.
This stretch of coastline shows excellent examples of different geographical landforms such as Lulworth Cove, the Isle of Portland, Chesil Beach and Durdle Door.
Lulworth Cove
Lulworth cove is a landmark situated on a concordant coastline. The coastline consists of bands of hard and soft rock. The cove has formed as the erosion processes have cut through the harder more resistant limestone rock attacking the weakenesses with it - joints and bedding plains mentioned in Coastal Erosion. Having broken through this narrow band of rock, softer rock; sands and clay are exposed which are less resistant to erosion, and this process is more rapid.
At the back of Lulworth cove there is a band of hard rock, Chalk. Chalk is a more resistant rock supporting the back of the cove.