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Hawk's Tor, on Bodmin Moor

A tor is a type of rock outcrop formed by weathering, usually found on or near the summit of a hill. In the South West of England, where the term originated, it is also a word used for the hills themselves – particularly the high points of Dartmoor in Devon and Bodmin Moor in Cornwall. The word 'tor' is also used in southern Wales, particularly on the rocky coastlines such as the Vale of Glamorgan and the Gower Peninsula; on the Gower one of the sandy beaches near Oxwich Bay is called "Tor Bay" because the beach is framed by a huge outcrop of carboniferous limestone. The term is notable for being, along with crag, one among a mere handful of Celtic loan-words (Old Welsh twrr, Scots Gaelic tòrr), primarily of a geographic or topographical nature, to be borrowed into vernacular English prior to the modern era. This origin of the word and the very fact it has survived hints at the places' special meaning to the gaelic peoples, often being centres of ritual and beliefs in the mystic and spiritual – a belief which in some cases carries on to today. Tor (The Onion Router) is a free software implementation of second-generation onion routing – a system enabling its users to communicate anonymously on the Internet. ... A tor is a high craggy hill. ... Image File history File links Metadata Size of this preview: 800 × 600 pixelsFull resolution (1280 × 960 pixel, file size: 328 KB, MIME type: image/jpeg) Hawks Tor, on Bodmin Moor, Cornwall. ... Image File history File links Metadata Size of this preview: 800 × 600 pixelsFull resolution (1280 × 960 pixel, file size: 328 KB, MIME type: image/jpeg) Hawks Tor, on Bodmin Moor, Cornwall. ... The Cheeswring, a granite tor on the southern edge of Bodmin Moor (Photo by Mick Knapton) Bodmin Moor is a granite moorland in northeastern Cornwall, England, 208 km² in size, dating from the Carboniferous period of geological history. ... Rock redirects here. ... Weathering is the decomposition of rocks, soils and their minerals through direct contact with the Earths atmosphere. ... Hills redirects here. ... South West England is one of the regions of England. ... High Willhays, the highest point on Dartmoor and southern England at 621 m (2037 ft) above sea level, with Yes Tor beyond. ... Part of the seafront of Torquay, south Devon, at high tide Devon is a large county in South West England, bordered by Cornwall to the west, and Dorset and Somerset to the east. ... The Cheeswring, a granite tor on the southern edge of Bodmin Moor (Photo by Mick Knapton) Bodmin Moor is a granite moorland in northeastern Cornwall, England, 208 km² in size, dating from the Carboniferous period of geological history. ... For other uses, see Cornwall (disambiguation). ... This article is about the country. ... For other uses, see Vale of Glamorgan (disambiguation). ... “Gower” redirects here. ... Oxwich Bay is a bay on the south of the Gower peninsula, Wales. ... Carboniferous Limestone is a type of limestone rock. ... Look up crag in Wiktionary, the free dictionary. ... The Celtic languages are the languages descended from Proto-Celtic, or Common Celtic, a branch of the greater Indo-European language family. ... Old Welsh (Hen Gymraeg) is the label attached to the Welsh language from the time it developed from the Brythonic language, generally thought to be in the period between the middle of the 6th century and the middle of the 7th century, until the early 12th century when it developed... Scottish Gaelic (Gàidhlig) is a member of the Goidelic branch of Celtic languages. ...

Contents

Formation

Millions of years ago magma created deep-seated dome batholiths which over time were revealed to the atmosphere and allowed for weathering to break down its composition forming tors. Half Dome, a granite monolith in Yosemite National Park and part of the Sierra Nevada batholith. ...


Tors are composed usually of granite or metamorphic rocks. Tors can also be found around any previously erupted volcanoes (although Devonian and Carboniferous outcrops are also found), though occasionally of other hard rocks such as quartzite, and are the result of millions of years of weathering. In prehistoric times, when the land was covered in forest, rain water seeped into the ground and gradually weathered the bedrock through its natural cracks, or joints. Once the land became exposed, the weathering was accelerated, particularly during the Ice age when freezing water expanded in the cracks. The result can be seen today in dramatic rock formations. For other uses, see granite (disambiguation). ... Quartzite, a form of metamorphic rock, from the Museum of Geology at University of Tartu collection. ... For the Celtic language, see Southwestern Brythonic language; for the residents of the English county, see Devon. ... President Bush- Deres gold in dem dere mines The Carboniferous is a major division of the geologic timescale that extends from the end of the Devonian period, about 359. ... Quartzite Quartzite (from German Quarzit[1]) is a hard, metamorphic rock which was originally sandstone. ... Weathering is the decomposition of rocks, soils and their minerals through direct contact with the Earths atmosphere. ... Variations in CO2, temperature and dust from the Vostok ice core over the last 400 000 years For the animated movie, see Ice Age (movie). ...


Weathering has also given rise to circular "rock basins'" formed by the accumulation of water and the repeated freezing and thawing – a fine example is to be found at Kes Tor.


As the weathering of the tors continues, the rock is broken down into ever smaller sizes. Many hillsides are covered with loose rocks, known as clitter, which have provided ready building materials for thousands of years. Eventually the granite is weathered down to a level equivalent to sandy gravel, known as growan, which consists of individual crystals. Gravel (largest fragment in this photo is about 4 cm) Gravel is rock that is of a certain particle size range. ...


The most distinctive granite landform in temperature countries is the tor and in tropical regions, the inselbergs. Both suggest the removal of material by solifluction and hence lead to the opinion that tors and inselbergs are relict features.


Tors on Dartmoor

Dartmoor represents one of the largest areas of exposed granite in the United Kingdom, covering an area of 241 square miles (625 square kilometres).[1] It is part of a chain of granite stretching through Cornwall, as far as the Isles of Scilly. St Martins taken from the helicopter to Penzance View from Tresco, the second largest member of the Isles of Scilly For the area of Surrey, see Scilly Isles, Surrey. ...


Some of the more durable granite survived to form the rocky crowns of Dartmoor tors. One of the best known is at Haytor, on the eastern part of the moor, whose granite is of unusually fine quality and was quarried during the 19th and early 20th centuries. Its stone was used to construct the pillars outside the British Museum in London, and to build London Bridge (now in Arizona). The last granite to be quarried there was used to build Exeter War Memorial in 1919. Haytor Haytor or Hay Tor is a granite tor on Dartmoor in the English county of Devon. ... Alternative meaning: Nineteenth Century (periodical) (18th century — 19th century — 20th century — more centuries) As a means of recording the passage of time, the 19th century was that century which lasted from 1801-1900 in the sense of the Gregorian calendar. ... (19th century - 20th century - 21st century - more centuries) Decades: 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s As a means of recording the passage of time, the 20th century was that century which lasted from 1901–2000 in the sense of the Gregorian calendar (1900–1999... The British Museum in London, England is a museum of human history and culture. ... This article is about the capital of England and the United Kingdom. ... For other uses, see London Bridge (disambiguation). ... Official language(s) English Spoken language(s) English 74. ... The city of Exeter is the county town of Devon, in the southwest of England, also known as the West Country. ... Year 1919 (MCMXIX) was a common year starting on Wednesday (link will display the full calendar). ...


Ten Tors is an annual weekend hike on Dartmoor. Ten Tors is an annual weekend hike organised and run in early May for 2,400 young people by the British Army on Dartmoor. ...


For a full list of Dartmoor's tors see List of Dartmoor tors and hills. This is a list of tors and hills on Dartmoor. ...

Higgar Tor in the Peak District.
Higgar Tor in the Peak District.

Image File history File links No higher resolution available. ... Image File history File links No higher resolution available. ... The Peak District is an upland area in central and northern England, lying mainly in northern Derbyshire, but also covering parts of Cheshire, Greater Manchester, Staffordshire, and South and West Yorkshire. ...

Other tors

  • Black Tor, Derwent Edge (538m)
  • Brent Tor
  • Dovestone Tor, Derwent Edge (505m)
  • Glastonbury Tor
  • Great Tor, Bamford
  • Howshaw Tor
  • Ladybower Tor
  • Low tor
  • Mam Tor (517m)
  • Shining Tor
  • Over Owler Tor (375m)
  • Higgar Tor (384m)
  • Whinstone Lee Tor
  • White Tor, Derwent Moors (487m)
  • The Barns of Bynack, Granite tors on Bynack More in the Cairngorms
  • The Salt Cellar, Gritstone tor on Derwent Edge in the Peak District
  • Tor Heard, Long Whatton
  • Angel Rocks north of Fairbanks, Alaska, USA

Brent Tor from the northeast Brent Tor is a tor on the western edge of Dartmoor, approximately five miles (8 km) north of Tavistock, rising to 1100 (330m) above sea level. ... Glastonbury Tor is a teardrop-shaped hill at Glastonbury, Somerset, England, with its only standing architectural feature the roofless St Michaels Tower of the former church. ... Mam Tor is a 517 m (1696 ft) high peak near Castleton in the High Peak of Derbyshire, England. ... Shining Tor is a hill in the Peak District of England, between the towns of Buxton and Macclesfield, lying on the border between Derbyshire and Cheshire. ... A millstone grit boulder on Higger Tor Higger Tor is a 434 m high gritstone tor in the Peak District of England. ... The Barns of Bynack. ... The Cairngorms: Ben Macdhui seen from Carn aMhaim This article is about the Scottish mountain range. ... The Cakes of Bread, Height approximately 15 feet (4. ... The Peak District is an upland area in central and northern England, lying mainly in northern Derbyshire, but also covering parts of Cheshire, Greater Manchester, Staffordshire, and South and West Yorkshire. ...

See also

A list of the peaks of the English Peak District. ... Red Shift (1973) is a fantasy novel by Alan Garner. ...

External links

Wikimedia Commons has media related to:
Tors
  • Pictures of Dartmoor tors

Image File history File links Commons-logo. ...

Notes

  1. ^ Source: Dartmoor National Park[citation needed]

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