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De Lank Quarries
De Lank Quarries () is an active quarry and a 54-acre geological Site of Special Scientific Interest in St Breward parish, north Cornwall, England, UK. The quarry, which received its SSSI notification in 1994, takes its name from the nearby De Lank river. The quarry produces typical biotite granites and are of such quality that a slab now forms the base section of the reception desk at the Geological Society of London. Other notable structures built of De Lank granite are the fourth Eddystone Lighthouse, 1882; the Royal Opera House in Covent Garden, London and the New Parliamentary Building in Whitehall, London Geology De Lank quarry is located on the edge of the igneous rocks that form the majority of Bodmin moor, with the change to slate formations occurring less than to the west. The bedrock in the quarry is granite, predominantly biotite-bearing granites and aplogranite with some felsite intrusions. History In the 1950s the quarry was owned by T W Ward & Son Ltd. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quarries In Cornwall
A quarry is a type of open-pit mine in which dimension stone, rock, construction aggregate, riprap, sand, gravel, or slate is excavated from the ground. The operation of quarries is regulated in some jurisdictions to reduce their environmental impact. The word ''quarry'' can also include the underground quarrying for stone, such as Bath stone. Types of rock Types of rock extracted from quarries include: *Chalk * China clay * Cinder *Clay *Coal *Construction aggregate (sand and gravel) *Coquina *Diabase *Gabbro *Granite *Gritstone *Gypsum *Limestone *Marble * Ores *Phosphate rock *Quartz *Sandstone *Slate *Travertine Stone quarry Stone quarry is an outdated term for mining construction rocks (limestone, marble, granite, sandstone, etc.). There are open types (called quarries, or open-pit mines) and closed types ( mines and caves). For thousands of years, only hand tools had been used in quarries. In the 18th century, the use of drilling and blasting operations w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mines In Cornwall
Mine, mines, miners or mining may refer to: Extraction or digging *Miner, a person engaged in mining or digging *Mining, extraction of mineral resources from the ground through a mine Grammar *Mine, a first-person English possessive pronoun Military * Anti-tank mine, a land mine made for use against armored vehicles * Antipersonnel mine, a land mine targeting people walking around, either with explosives or poison gas * Bangalore mine, colloquial name for the Bangalore torpedo, a man-portable explosive device for clearing a path through wire obstacles and land mines * Cluster bomb, an aerial bomb which releases many small submunitions, which often act as mines * Land mine, explosive mines placed under or on the ground * Mining (military), digging under a fortified military position to penetrate its defenses * Naval mine, or sea mine, a mine at sea, either floating or on the sea bed, often dropped via parachute from aircraft, or otherwise lain by surface ships or submarines * Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geology Of Cornwall
The geology of Cornwall, England, is dominated by its granite backbone, part of the Cornubian batholith, formed during the Variscan orogeny. Around this is an extensive metamorphic aureole (known locally as killas) formed in the mainly Devonian slates that make up most of the rest of the county. There is an area of sandstone and shale of Carboniferous age in the north east, and the Lizard peninsula is formed of a rare section of uplifted oceanic crust. Coasts Cornwall forms the tip of the south-west peninsula of the island Great Britain, and is therefore exposed to the full force of the prevailing winds that blow in from the Atlantic Ocean. The coastline is composed mainly of resistant rocks that give rise in many places to impressive cliffs. The north and south coasts have different characteristics. The north coast is more exposed and therefore has a wilder nature. The prosaically-named ''High Cliff'', between Boscastle and St Gennys, is the highest sheer-drop cliff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bodmin Moor
Bodmin Moor ( kw, Goon Brenn) is a granite moorland in north-eastern Cornwall, England. It is in size, and dates from the Carboniferous period of geological history. It includes Brown Willy, the highest point in Cornwall, and Rough Tor, a slightly lower peak. Many of Cornwall's rivers have their sources here. It has been inhabited since at least the Neolithic era, when primitive farmers started clearing trees and farming the land. They left their megalithic monuments, hut circles and cairns, and the Bronze Age culture that followed left further cairns, and more stone circles and stone rows. By medieval and modern times, nearly all the forest was gone and livestock rearing predominated. The name Bodmin Moor is relatively recent. An early mention is in the ''Royal Cornwall Gazette'' of 28 November 1812. The upland area was formerly known as Fowey Moor after the River Fowey, which rises within it. Geology Bodmin Moor is one of five granite plutons in Cornwall that make up par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural England
Natural England is a non-departmental public body in the United Kingdom sponsored by the Department for Environment, Food and Rural Affairs. It is responsible for ensuring that England's natural environment, including its land, flora and fauna, freshwater and marine environments, geology and soils, are protected and improved. It also has a responsibility to help people enjoy, understand and access the natural environment. Natural England focuses its activities and resources on four strategic outcomes: * a healthy natural environment * enjoyment of the natural environment * sustainable use of the natural environment * a secure environmental future Roles and responsibilities As a non-departmental public body (NDPB), Natural England is independent of government. However, the Secretary of State for Environment, Food & Rural Affairs has the legal power to issue guidance to Natural England on various matters, a constraint that was not placed on its predecessor NDPBs. Its powers in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orenstein & Koppel
Orenstein & Koppel (normally abbreviated to "O&K") was a major Germany, German engineering company specialising in railway vehicles, escalators, and heavy equipment. It was founded on April 1, 1876 in Berlin by Benno Orenstein and Arthur Koppel. Originally a general engineering company, O&K soon started to specialise in the manufacture of railway vehicles. The company also manufactured heavy equipment and escalators. O&K pulled out of the railway business in 1981. Its escalator-manufacturing division was spun off to the company's majority shareholder at the time, Krupp, Friedrich Krupp AG Hoesch-Krupp, in 1996, leaving the company to focus primarily on construction machines. The construction-equipment business was sold to New Holland Construction, at the time part of the Fiat Group, in 1999. Founding and railway work The Orenstein & Koppel Company was a mechanical engineering, mechanical-engineering firm that first entered the railway-construction field, building locomotives a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
St Austell
St Austell (; kw, Sans Austel) is a town in Cornwall, England, south of Bodmin and west of the border with Devon. St Austell is one of the largest towns in Cornwall; at the 2011 census it had a population of 19,958. History St Austell was a village centred around the parish church, until the arrival of significant tin mining in the 18th century turned it into a town. St Austell is named after the 6th century Cornish saint, St Austol, a disciple of St Mewan. In a Vatican manuscript there is a 10th-century list of Cornish parish saints. This includes Austoll, which means that the church and village existed at that time, shortly after 900. St Austell is not mentioned in Domesday Book (1086). However A. L. Rowse, in his book ''St. Austell: Church, Town, and Parish'', cites records which show a church was dedicated on 9 October 1262 by Bishop Bronescombe, and other records show a church there in 1169, dedicated to "Sanctus Austolus". The current church dates from the 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wenfordbridge
Wenfordbridge, or Wenford Bridge, is a hamlet some north of Bodmin and on the western flank of Bodmin Moor, in Cornwall, England, UK. It takes its name from an old granite bridge over the River Camel, and lies on the border between the parishes of St Breward and St Tudy. Wenford Bridge was the terminus of a former railway line from Wadebridge that was originally built by the Bodmin and Wadebridge Railway in 1834. The line was built in order to facilitate the transport of sea sand for agricultural use from the estuary of the Camel to the local farms, and never carried passengers. Other traffic included granite and china clay from local quarries, and the line survived to carry the latter until 1983. Today the route of the line forms part of the Camel Trail, a recreational route for walkers, cyclists and horse riders. Pottery The influential studio potter Michael Cardew purchased the inn at Wenford in 1939 and converted it to a pottery where he produced earthenware and sto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bodmin And Wadebridge Railway
The Bodmin and Wadebridge Railway was a railway line opened in 1834 in Cornwall, England, United Kingdom. It linked the quays at Wadebridge with the town of Bodmin and also to quarries at Wenfordbridge.Sources use Wenfordbridge and Wenford Bridge interchangeably, but the current Ordnance Survey 1:50 000 maps cite the name as a single word Its intended traffic was minerals to the port at Wadebridge and sea sand, used to improve agricultural land, inwards. Passengers were also carried on part of the line. It was the first steam-powered railway line in the county and predated the main line to London by 25 years. It was always desperately short of money, both for initial construction and for actual operation. In 1847 it was purchased by the London and South Western Railway,Christopher Awdry, ''Encyclopaedia of British Railway Companies'', Patrick Stephens Limited, Wellingborough, 1990, when that company hoped to gain early access to Cornwall for its network, but in fact those intent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Felsite
Felsite is a very fine-grained volcanic rock that may or may not contain larger crystals. Felsite is a field term for a light-colored rock that typically requires petrographic examination or chemical analysis for more precise definition. Color is generally white through light gray, or red to tan and may include any color except dark gray, green or black (the colors of trap rock). The mass of the rock consists of a fine-grained matrix of felsic materials, particularly quartz, sodium and potassium feldspar, and may be termed a quartz felsite or quartz porphyry if the quartz phenocrysts are present. This rock is typically of extrusive origin, formed by compaction of fine volcanic ash, and may be found in association with obsidian and rhyolite. In some cases, it is sufficiently fine-grained for use in making stone tools. Its fine texture and felsic components allow for good knapped pieces, much like working chert, producing conchoidal fracture. Dendritic manganese oxides such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
