Coastal Features-The White Cliffs of Dover; SCI 244-WIU

angiotensin-converting enzyme of the most wide facing pages landforms of eating awayal coasts be sea cliffs. They argon open up all over the world. sea cliffs are steep to tumid bedrock that range from a hardly a(prenominal) meters to hundreds of meters in big top above sea train. Sea cliffs are the result of wheel-induced erosion near sea level and collapsed rocks at higher elevations. One of the most famous of these features is the livid Cliffs of Dover on England?s shores. At some while in the past, the Britain that we k straight off did non exist. It was a western peninsula of the European continent. During the new Ice days half a million geezerhood ago a large ice sheet spread across northern Britain and large amounts of the North Sea. (National Trust, 2006). This created a considerable lake in the screwball hills, which is now the Straits of Dover. The dam of the lake broke, and the piddle organise a deep channel through the hills. ?As the ice fluid the sea began to encroach back up this valley gnaw away the soft chalk and forming what is now the English Channel-thus Britain became an island.? (National Trust, 2006, p 1). Around 70 million days ago, this part of England was cover by a shallow sea. The tush of this sea consisted of a white louse up formed from the fragments of coccoliths.

Coccoliths are the skeletons of microscopic algae, which at one time lived in the surface waters of the shallow sea. The white mud ulterior became chalk, deposited slowly, at the rate of about half a mm a year. (Information Resources, 2006). The cliffs are still at the tenderness of the sea, which chow away at the soft chalk at the base. approximately two to five centimeters are lost all(preno! minal) year to wave action, but even more is lost... If you expect to get a full essay, order it on our website: OrderEssay.net

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