Castle eden dene

franco56 By franco56, 4th Jan 2012 | Follow this author | RSS Feed
Posted in Wikinut>Travel>Europe>England>The Northeast

this will tell you what castle eden dene is and how it was formed over the past 50,000 years

long long ago ........

INTRODUCTION:

Castle Eden Dene is a Site of Special Scientific Interest and National Nature Reserve in the Easington district of County Durham,England. It is located immediately south of Peterlee, between the A19 and A1086 roads. Castle Eden Dene is a mixed woodland ravine in Co.Durham. It is one of the largest ravines in County as it travels four miles inland from the coast. It was made a local nature reserve back in 1954, many of the rock types found in the dene where deposited there during the last ice age but many of the cliffs are Magnesium Limestone, due to the different rock types this allows for different soil types which allows a wide range of plants and trees to grow naturally and provide many habitats for many animals. In this poster we will look at how the ravine was formed the limestone cliffs came to be at Castle Eden Dene.

In the beginning:
295 – 250 million years Co. Durham was a vast Dessert which became flooded and formed the Zechstein sea. This period was called the Permian Period. In this sea swam ancient sea creatures such as Trilobites and Ammonites. There was even an offshore barrier reef that was not made up of Coral, but of Bryozoans, these where aquatic colonial animals or other wise known as moss animals. At the bottom of this sea formed oozy lime rich mud, which is now the cliffs you can see today.

Over the next 250, 000 years:
Although no new rocks where during this period of time, Britain continued its northward journey on the tectonic plate and land movements raised the current rock into land into low hills, which put the country into the position it is in today and away from the warmer climates.

The Ice Age:
Over the last 2.5 million years Britain has been through a series of ice ages, at certain points Durham was buried under a kilometre of ice. It is because of the colossal of the glacier that formed the valley of Castle Eden Dene as it is more more easy to cut through softer rock such as limestone. Then when the ice melted away the stream that was left cut the valley into a V shape, leaving us with today what is known as Caslte Eden Dene.

The dene is on of the largest, and biologically the richest of series of deep ravines that have been incised through the magnesium limestone and overlaying bolder clay of county Durham coast by streams flowing into the north sea. It is the largest area of semi natural woodland in the north east of England and because of its deep valley slopes it has suffered little from human interference. Many of the tree species found in the dene today are Ash, Wych Elm, Sycamore and Yew. There have been over 450 types of plants found in the dene many of them link back to medieval times. Many of the ground plant life that can be found are Bracken, Wild garlic, Brambles and it even includes locally rare species such as, Lilly of the valley, Herb paris, Bird's nest orchid and round leaved wintergreen.

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author avatar franco56
currently studying at univeraty in outdoor adventure management

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author avatar Denise O
5th Jan 2012 (#)

Castle Eden Dene, sounds just lovely. Thank you for sharing.:)

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