4872 x 3654 px | 41,2 x 30,9 cm | 16,2 x 12,2 inches | 300dpi
Aufnahmedatum:
1. Juli 2013
Ort:
Durdle Door, Lulworth, Dorset, United Kingdom
Weitere Informationen:
Durdle Door is a natural limestone arch on the Jurassic Coast near Lulworth in Dorset, England. It is open to the public. The name Durdle is derived from the Old English 'thirl' meaning bore or drill. The arch has formed on a concordant coastline where bands of rock run parallel to the shoreline.[citation needed] The rock strata are almost vertical, and the bands of rock are quite narrow. Originally a band of resistant Portland limestone ran along the shore, the same band appears one mile along the coast forming the narrow entrance to Lulworth Cove. Behind this is a 120-metre (390 ft) band of weaker, easily eroded rocks, and behind this is a stronger and much thicker band of chalk, which forms the Purbeck Hills. The limestone and chalk are in closer proximity at Durdle Door than at Swanage, 10 miles (16 km) to the east, where the distance is over 2 miles (3 km). There are at least three reasons for this. Firstly, the beds are highly inclined (whilst more gently inclined at Swanage). Secondly, some of the beds have been cut out by faulting; and thirdly, the area around Durdle Door seems unusually shallow, so thinner bands of sediments were deposited. At Durdle Bay nearly all of the limestone has been removed by sea erosion, whilst the remainder forms a small headland. Erosion at the western end of the limestone band has resulted in the arch formation. UNESCO teams have been working on saving both the arch and adjacent beach. n 2001 the coast was granted World Heritage Site status by UNESCO. Experts at UNESCO have been working on preserving the shape of Lulworth Cove. Lulworth was one of a number of gateway villages on the coast with a Heritage Centre—part visitor centre, tourist information and natural history museum—which in 2002 received 418, 595 visitors. Most of the area is privately owned by the Lulworth Estate.
