Isle of Portland

Coordinates: 50°33′00″N 2°26′24″W / 50.550°N 2.440°W / 50.550; -2.440

The Isle of Portland is a limestone tied island, 6 kilometres (4 mi) long by 2.7 kilometres (1.7 mi) wide, in the English Channel. Portland is 8 kilometres (5 mi) south of the resort of Weymouth, forming the southernmost point of the county of Dorset, England. A barrier beach over which runs the A354 road connects it to Chesil Beach and the mainland. Portland and Weymouth together form the borough of Weymouth and Portland. The population of Portland is 12,400.

Portland is a central part of the Jurassic Coast, a World Heritage Site on the Dorset and east Devon coast, important for its geology and landforms. Its name is used for one of the British Sea Areas, and has been exported as the name of North American and Australian towns. Portland stone, famous for its use in British and world architecture, including St Paul's Cathedral and the United Nations Headquarters, continues to be quarried.

Portland Harbour, in between Portland and Weymouth, is one of the largest man-made harbours in the world. The harbour was made by the building of stone breakwaters between 1848 and 1905. From its inception it was a Royal Navy base, and played prominent roles during the First and Second World Wars; ships of the Royal Navy and NATO countries worked up and exercised in its waters until 1995. The harbour is now a civilian port and popular recreation area, and was used for the 2012 Olympic Games.

Portland

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Jurassic Coast

Coordinates: 50°42′20″N 2°59′23.6″W / 50.70556°N 2.989889°W / 50.70556; -2.989889

The Jurassic Coast is a World Heritage Site on the English Channel coast of southern England. It stretches from Orcombe Point near Exmouth in East Devon to Old Harry Rocks near Swanage in East Dorset, a distance of 96 miles (155 kilometres). Chartered in 2001, the Jurassic coast was the second wholly natural World Heritage Site to be designated in the United Kingdom. Its entire length can be walked on the South West Coast Path. The site was featured on the television programme Seven Natural Wonders as one of the wonders of the South West (of the UK), and in a 2005 poll of Radio Times readers, the Jurassic Coast was named as the fifth-greatest natural wonder in Britain.

Geology

The Jurassic Coast consists of Triassic, Jurassic and Cretaceous cliffs, spanning the Mesozoic Era, documenting 180 million years of geological history.

The site shows excellent examples of landforms, including the natural arch at Durdle Door, the cove and limestone folding at Lulworth Cove and an island, the Isle of Portland. Chesil Beach is a fine example of both a tombolo (a deposition landform in which an island is attached to the mainland by a narrow piece of land such as a spit or bar) and a storm beach (a beach affected by particularly fierce waves). The site has stretches of both concordant and discordant coastlines. Due to the quality of the varied geology, the site is the subject of international field studies. This area was home to Mary Anning, a palaeontologist who studied the fossils of the coastline around Lyme Regis and discovered the first complete Ichthyosaur fossil at the Spittles.

Isle

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