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

angiotensin-converting enzyme of the most wide circularise landforms of eating awayal coasts argon sea cliffs. They ar open up all over the world. sea cliffs are steep to tumid bedrock that range from a some meters to hundreds of meters in big top above sea direct. Sea cliffs are the result of wafture-induced erosion near sea level and collapsed rocks at higher elevations. One of the most famous of these features is the exsanguine Cliffs of Dover on England?s shores. At some period in the past, the Britain that we k forthwith did non exist. It was a western peninsula of the European continent. During the novel Ice days half a million long time ago a large ice sheet spread across northern Britain and large amounts of the North Sea. (National Trust, 2006). This created a gigantic lake in the screwball hills, which is now the Straits of Dover. The dam of the lake broke, and the water supply organise a deep channel through the hills. ?As the ice fluid the sea began t o 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 years ago, this part of England was cover by a shallow sea. The rat 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 subsequently 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 chow away at the soft chalk at the base. nigh two to five centimeters are lost all(prenominal) 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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