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Dartmoor Sheep
Dartmoor is an upland area in southern Devon, South West England. The moorland and surrounding land has been protected by National Park status since 1951. Dartmoor National Park covers . The granite that forms the uplands dates from the Carboniferous Period of geological history. The landscape consists of moorland capped with many exposed granite hilltops known as tors, providing habitats for wildlife. The highest point is High Willhays, above sea level. The entire area is rich in antiquities and archaeological artefacts. Dartmoor National Park is managed by the Dartmoor National Park Authority, whose 22 members are drawn from Devon County Council, local district councils and Government. The Dartmoor Commoners' Council exists to create and enforce regulations regarding commoners' rights. Parts of Dartmoor have been used as military firing ranges for over 200 years. The public is granted extensive land access rights on Dartmoor (including restricted access to the firing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotland, Wales and Northern Ireland. The UK includes the island of Great Britain, the north-eastern part of the island of Ireland, and most of List of islands of the United Kingdom, the smaller islands within the British Isles, covering . Northern Ireland shares Republic of Ireland–United Kingdom border, a land border with the Republic of Ireland; otherwise, the UK is surrounded by the Atlantic Ocean, the North Sea, the English Channel, the Celtic Sea and the Irish Sea. It maintains sovereignty over the British Overseas Territories, which are located across various oceans and seas globally. The UK had an estimated population of over 68.2 million people in 2023. The capital and largest city of both England and the UK is London. The cities o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cornubian Batholith
The Cornubian batholith is a large mass of granite rock, formed about 280 million years ago, which lies beneath much of Cornwall and Devon in the South West Peninsula of England. The main exposed masses of granite are seen at Dartmoor, Bodmin Moor, St Austell, Carnmenellis, Land's End and the Isles of Scilly. The intrusion is associated with significant quantities of minerals, particularly cassiterite, an ore of tin which has been mined since about 2000 BC. Other minerals include china clay and ores of copper, lead, zinc and tungsten. It takes its name from ''Cornubia'', the Medieval Latin name for Cornwall. Extent and geometry A batholith is a large mass of intrusive rock formed from the crystallization of molten rock beneath the Earth's surface (magma). From gravity and magnetic geophysical data, the batholith is interpreted to extend from about 8°W, more than 100 km southwest of the Isles of Scilly, to the eastern edge of Dartmoor. The negative gravity anomaly, cause ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ryder's Hill
At 515 m, Ryder's Hill is the highest point on the southern part of Dartmoor, Devon, England. On its summit there are two standing stones and a low cairn, on top of which is a triangulation pillar. One of the standing stones is called Petre's Bound Stone and it marks the boundary of three civil parishes: Dartmoor Forest, Holne and Buckfastleigh Buckfastleigh is a market town and civil parish in Devon, England situated beside the Devon Expressway ( A38) at the edge of the Dartmoor National Park. It is part of Teignbridge and, for ecclesiastical purposes, lies within the Totnes Deanery. .... The cairn, which is not very prominent, has an important history. It was one of the boundary markers of the Forest of Dartmoor mentioned in the Perambulation of 1240 and has been known as "Knattleborough" (or variations of that name) since at least the 17th century. Ryder's Hill can be reached by walking up Holne Ridge from Combestone Tor, past Horn's Cross, a distance of about 3& ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yes Tor
Yes Tor is the second highest point on Dartmoor, Devon, South West England, at above sea level. It is one of only two wholly English peaks south of the Peak District National Park—the other being nearby High Willhays—that are above . The name means "eagle's tor", from Old English ''earnes torr''. It lies within a British Army firing range and safe access is only possible on days or nights when firing is not taking place, as per the current Dartmoor Firing Notice. Yes Tor is lower than the nearby High Willhays. In popular culture Literature *In his memoir '' Father and Son'' (1907), Edmund Gosse views Yes Tor, near which he lived when a boy, as an unthreatening and unprepossessing hill: "Alas! We might as well have attempted to rouse the summit of Yes Tor into volcanic action." *The American science fiction author Kim Stanley Robinson makes an oblique reference to Yes Tor in his novel '' 2312'', commingled with a variety of then-historical musical contextual clues. Musi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ten Tors Challenge
Ten Tors is an annual weekend hike in early May, on Dartmoor, southwest England. Organized by the British Army, starting in 1960, it brings together teams of six young people, with the 2,400 young participants hiking to checkpoints on ten specified tors. The majority of entrants are schools, colleges, Scout groups and Cadet squadrons from South West England, though groups from across the UK have regularly taken part, as have teams from Australia and New Zealand. However, from 2012, only teams from the South West of England are eligible to take part, due to the large numbers of entrants. Event format Teams of six are required to visit ten specified tors and 5 to 10 via tors, these are required although not counted towards the 8 tor limit on the first day or your ten tors.; on the top of each tor is a checkpoint. Each team is required to visit all of the specified checkpoints in the correct order. Any member can choose to withdraw at a safety control, as long as there are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tor (rock Formation)
A tor, which is also known by geomorphologists as either a castle koppie or kopje, is a large, free-standing rock (geology), rock outcrop that rises abruptly from the surrounding smooth and gentle slopes of a rounded hill summit or ridge crest. In the South West England, South West of England, the term is commonly also used for the hills themselves – particularly the high points of Dartmoor in Devon and Bodmin Moor in Cornwall.Ehlen, J. (2004) ''Tor'' in Goudie, A., ed., pp. 1054-1056. ''Encyclopedia of Geomorphology''. Routledge. London, England. Etymology Although English topographical names often have a Celtic languages, Celtic etymology, the ''Oxford English Dictionary'' lists no cognates to the Old English word in either the Breton language, Breton or Cornish languages (the Scottish Gaelic is thought to derive from the Old English word). It is therefore accepted that the English word ''Tor'' derives from the Old Welsh word or , meaning a cluster or heap. Formation To ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saddle Tor To Hey Tor Pano
A saddle is a supportive structure for a rider of an animal, fastened to an animal's back by a girth. The most common type is equestrian. However, specialized saddles have been created for oxen, camels and other animals. It is not known precisely when riders first began to use some sort of padding or protection, but a blanket attached by some form of surcingle or girth was probably the first "saddle", followed later by more elaborate padded designs. The solid saddle tree was a later invention, and though early stirrup designs predated the invention of the solid tree, the paired stirrup, which attached to the tree, was the last element of the saddle to reach the basic form that is still used today. Present-day saddles come in a wide variety of styles, each designed for a specific equestrianism discipline, and require careful fit to both the rider and the horse. Proper saddle care can extend the useful life of a saddle, often for decades. The saddle was a crucial step in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravity Anomalies Of Britain And Ireland
Variations in the strength of gravity occur from place to place according to the density distribution of the rocks beneath the surface. Such gravity anomaly, gravity anomalies have been mapped across the British Isles and adjacent areas and they reveal aspects of these islands’ geological structure. Negative anomalies Negative gravity anomalies are associated with local deficiencies in mass due to volumes of rock which are less density, dense than the average. Typically these anomalies are associated with granite plutons and with sedimentary basins. Gravity anomaly maps of the British Isles are interpreted as indicating the presence of granite plutons in the following areas. The list is not exhaustive: *Galloway, UK *Cheviot Hills, UK *Mountains of Mourne, UK *Connemara, Ireland *County Donegal, Ireland *South West England (Cornubian batholith and Haig Fras granite), UK *Askrigg Block (Yorkshire Dales), UK *Alston Block (North Pennines), UK *Grampian Highlands (Cairngorms etc.), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravity Anomaly
The gravity anomaly at a location on the Earth's surface is the difference between the observed value of gravity and the value predicted by a theoretical model. If the Earth were an ideal oblate spheroid of uniform density, then the gravity measured at every point on its surface would be given precisely by a simple algebraic expression. However, the Earth has a rugged surface and non-uniform composition, which distorts its gravitational field. The theoretical value of gravity can be corrected for altitude and the effects of nearby terrain, but it usually still differs slightly from the measured value. This gravity anomaly can reveal the presence of subsurface structures of unusual density. For example, a mass of dense ore below the surface will give a positive anomaly due to the increased gravitational attraction of the ore. Different theoretical models will predict different values of gravity, and so a gravity anomaly is always specified with reference to a particular model. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sedimentary Rock
Sedimentary rocks are types of rock (geology), rock formed by the cementation (geology), cementation of sediments—i.e. particles made of minerals (geological detritus) or organic matter (biological detritus)—that have been accumulated or deposited at Earth's surface. Sedimentation is any process that causes these particles to settle in place. Geological detritus originates from weathering and erosion of existing rocks, or from the solidification of molten lava blobs erupted by volcanoes. The geological detritus is transported to the place of deposition by water, wind, ice or Mass wasting, mass movement, which are called agents of denudation. Biological detritus is formed by bodies and parts (mainly shells) of dead aquatic organisms, as well as their fecal mass, suspended in water and slowly piling up on the floor of water bodies (marine snow). Sedimentation may also occur when dissolved minerals precipitate from aqueous solution, water solution. The sedimentary rock cover of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xenolith
A xenolith ("foreign rock") is a rock (geology), rock fragment (Country rock (geology), country rock) that becomes enveloped in a larger rock during the latter's development and solidification. In geology, the term ''xenolith'' is almost exclusively used to describe inclusion (mineral), inclusions in igneous rock entrained during magma ascent, emplacement and eruption. Xenoliths may be engulfed along the margins of a magma chamber, torn loose from the walls of an erupting lava conduit or explosive diatreme or picked up along the base of a flowing body of lava on the Earth's surface. A xenocryst is an individual foreign crystal included within an igneous body. Examples of xenocrysts are quartz crystals in a silica-deficient lava and diamonds within kimberlite diatremes. Xenoliths can be non-uniform within individual locations, even in areas which are spatially limited, e.g. rhyolite-dominated lava of Nii-jima, Niijima volcano (Japan) contains two types of gabbroic xenoliths which a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shale
Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of Clay mineral, clay minerals (hydrous aluminium phyllosilicates, e.g., Kaolinite, kaolin, aluminium, Al2Silicon, Si2Oxygen, O5(hydroxide, OH)4) and tiny fragments (silt-sized particles) of other minerals, especially quartz and calcite.Blatt, Harvey and Robert J. Tracy (1996) ''Petrology: Igneous, Sedimentary and Metamorphic'', 2nd ed., Freeman, pp. 281–292 Shale is characterized by its tendency to split into thin layers (Lamination (geology), laminae) less than one centimeter in thickness. This property is called ''Fissility (geology), fissility''. Shale is the most common sedimentary rock. The term ''shale'' is sometimes applied more broadly, as essentially a synonym for mudrock, rather than in the narrower sense of clay-rich fissile mudrock. Texture Shale typically exhibits varying degrees of fissility. Because of the parallel orientation of clay mineral flakes in shale, it breaks in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
