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Green Bridge Of Wales
The Green Bridge of Wales ( cy, Pont Werdd Cymru) is a natural arch formed from Carboniferous Limestone within the Pembrokeshire Coast National Park, Pembrokeshire, Wales. It is located in the Castlemartin military training area just beyond the car park at Stack Rocks (Creigiau Elegig) and beside the Pembrokeshire Coast Path. Geology The geology of the area in which the Green Bridge of Wales is located is composed of a very thick layer of Carboniferous Limestone, including a certain amount of chert. Erosion has occurred over time as storm winds have battered the coast, pebbles have been dashed against the rocks, sand particles have worn away the surface, and chemical erosion has dissolved the limestone. The weakest parts of the cliff are the first to be worn away, usually the folds and small faults that are present in the rocks. This has resulted over many millennia in the creation of many unusual landforms. In the case of the Green Bridge of Wales, erosion has taken place on bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Bridge Of Wales
The Green Bridge of Wales ( cy, Pont Werdd Cymru) is a natural arch formed from Carboniferous Limestone within the Pembrokeshire Coast National Park, Pembrokeshire, Wales. It is located in the Castlemartin military training area just beyond the car park at Stack Rocks (Creigiau Elegig) and beside the Pembrokeshire Coast Path. Geology The geology of the area in which the Green Bridge of Wales is located is composed of a very thick layer of Carboniferous Limestone, including a certain amount of chert. Erosion has occurred over time as storm winds have battered the coast, pebbles have been dashed against the rocks, sand particles have worn away the surface, and chemical erosion has dissolved the limestone. The weakest parts of the cliff are the first to be worn away, usually the folds and small faults that are present in the rocks. This has resulted over many millennia in the creation of many unusual landforms. In the case of the Green Bridge of Wales, erosion has taken place on bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural Arch
A natural arch, natural bridge, or (less commonly) rock arch is a natural landform where an arch has formed with an opening underneath. Natural arches commonly form where inland cliffs, coastal cliffs, fins or stacks are subject to erosion from the sea, rivers or weathering ( subaerial processes). Most natural arches are formed from narrow fins and sea stacks composed of sandstone or limestone with steep, often vertical, cliff faces. The formations become narrower due to erosion over geologic time scales. The softer rock stratum erodes away creating rock shelters, or alcoves, on opposite sides of the formation beneath the relatively harder stratum, or caprock, above it. The alcoves erode further into the formation eventually meeting underneath the harder caprock layer, thus creating an arch. The erosional processes exploit weaknesses in the softer rock layers making cracks larger and removing material more quickly than the caprock; however, the caprock itself continues to er ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carboniferous Limestone
Carboniferous Limestone is a collective term for the succession of limestones occurring widely throughout Great Britain and Ireland that were deposited during the Dinantian Epoch of the Carboniferous Period. These rocks formed between 363 and 325 million years ago. Within England and Wales, the entire limestone succession, which includes subordinate mudstones and some thin sandstones, is known as the Carboniferous Limestone Supergroup. Depositional basins Within Great Britain the suite of rocks known traditionally as the Carboniferous Limestone Series was deposited as marine sediments in three distinct ‘provinces’ separated by contemporary landmasses. One of these landmasses was the Wales-London-Brabant Massif, an east–west aligned belt of land stretching through central Wales and the English Midlands to East Anglia and on into Belgium. The limestones deposited to its south form a distinct South Wales-Mendip province which extends from Pembrokeshire in the west through ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pembrokeshire Coast National Park
Pembrokeshire Coast National Park ( cy, Parc Cenedlaethol Arfordir Penfro) is a national park along the Pembrokeshire coast in west Wales. It was established as a National Park in 1952. It is one of three national parks in Wales, the others being the Brecon Beacons () and Snowdonia (). It is the only national park in the United Kingdom to consist largely of coastal landscapes. Landscape :''See also Geology of the Pembrokeshire Coast National Park'' The National Park has a varied landscape of rugged cliffs, sandy beaches, wooded estuaries, wild inland hills, the moorland of the Preseli Hills and the wooded valley. The total area is . There are four distinct sections: clockwise these are the south Pembrokeshire coast, including Caldey Island; the estuary; the St Bride's Bay coast, including the coastal islands; and the Preseli Hills. The geology of the area is of particular interest with many good exposures both inland and along the coast, exhibiting a variety of rock ty ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pembrokeshire
Pembrokeshire ( ; cy, Sir Benfro ) is a Local government in Wales#Principal areas, county in the South West Wales, south-west of Wales. It is bordered by Carmarthenshire to the east, Ceredigion to the northeast, and the rest by sea. The county is home to Pembrokeshire Coast National Park. The Park occupies more than a third of the area of the county and includes the Preseli Hills in the north as well as the Pembrokeshire Coast Path. Historically, mining and fishing were important activities, while industry nowadays is focused on agriculture (86 per cent of land use), oil and gas, and tourism; Pembrokeshire's beaches have won many awards. The county has a diverse geography with a wide range of geological features, habitats and wildlife. Its prehistory and modern history have been extensively studied, from tribal occupation, through Roman times, to Welsh, Irish, Norman, English, Scandinavian and Flemish influences. Pembrokeshire County Council's headquarters are in the county ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wales
Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the Bristol Channel to the south. It had a population in 2021 of 3,107,500 and has a total area of . Wales has over of coastline and is largely mountainous with its higher peaks in the north and central areas, including Snowdon (), its highest summit. The country lies within the Temperateness, north temperate zone and has a changeable, maritime climate. The capital and largest city is Cardiff. Welsh national identity emerged among the Celtic Britons after the Roman withdrawal from Britain in the 5th century, and Wales was formed as a Kingdom of Wales, kingdom under Gruffydd ap Llywelyn in 1055. Wales is regarded as one of the Celtic nations. The Conquest of Wales by Edward I, conquest of Wales by Edward I of England was completed by 1283, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Castlemartin Training Area
The Castlemartin Training Area is located within the Pembrokeshire Coast National Park at Castlemartin, Pembrokeshire, Wales. It is owned by the Ministry of Defence (MoD) and covers The ranges are active for 44 weeks of the year and when in use can include a coastal exclusion zone of as much as off the coast, or as little as depending on which weapon system and ammunition is being used. History The Castlemartin Training Area was established in 1938 from both deserted and inhabited farmland, and from parts of the defunct Cawdor Estate. The ranges were abandoned by the military soon after the Second World War, but were re-instated in 1951 when the Korean War started. In 1961 there was a shortage of suitable tank training areas in the northern part of Germany for the then recently reactivated German Tank Units. The British Army of the Rhine (BAOR) extensively used the ranges at the Bergen-Hohne Training Area which totalled as their training demands could not be met by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pembrokeshire Coast Path
The Pembrokeshire Coast Path ( cy, Llwybr Arfordir Sir Benfro), often called the Pembrokeshire Coastal Path, is a designated National Trail in Pembrokeshire, southwest Wales. Established in 1970, it is a long-distance walking route, mostly at cliff-top level, with a total of of ascent and descent. At its highest point – Pen yr afr, on Cemaes Head – it reaches a height of , and at its lowest point – Sandy Haven crossing, near Milford Haven – it is just above low water. Whilst most of the coastline faces west, it offers – at varying points – coastal views in every direction of the compass. The southern end of the path is at Amroth, Pembrokeshire. The northern end is often regarded as being at Poppit Sands, near St. Dogmaels, Pembrokeshire, where the official plaque was originally sited but the path now continues to St. Dogmaels, where a new marker was unveiled in July 2009. Here the path links with the Ceredigion Coast Path, which c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chert
Chert () is a hard, fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline quartz, the mineral form of silicon dioxide (SiO2). Chert is characteristically of biological origin, but may also occur inorganically as a precipitation (chemistry), chemical precipitate or a diagenesis, diagenetic replacement, as in petrified wood. Chert is typically composed of the petrified remains of siliceous ooze, the biogenic sediment that covers large areas of the deep ocean floor, and which contains the silicon skeletal remains of diatoms, Dictyochales, silicoflagellates, and radiolarians. Precambrian cherts are notable for the presence of fossil cyanobacteria. In addition to Micropaleontology, microfossils, chert occasionally contains macrofossils. However, some chert is devoid of any fossils. Chert varies greatly in color (from white to black), but most often manifests as gray, brown, grayish brown and light green to rusty redW.L. Roberts, T.J. Campbell, G.R. Rapp Jr. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hurricane Ophelia (2017)
Hurricane Ophelia (known as Storm Ophelia in Ireland and the United Kingdom while extratropical) was regarded as the worst storm to affect Ireland in 50 years, and was also the easternmost Atlantic major hurricane on record. The tenth and final consecutive hurricane and the sixth major hurricane of the very active 2017 Atlantic hurricane season, Ophelia had non-tropical origins from a decaying cold front on 6 October. Located within a favorable environment, the storm steadily strengthened over the next two days, drifting north and then southeastwards before becoming a hurricane on 11 October. After becoming a Category 2 hurricane and fluctuating in intensity for a day, Ophelia intensified into a major hurricane on 14 October south of the Azores, brushing the archipelago with high winds and heavy rainfall. Shortly after achieving peak intensity, Ophelia began weakening as it accelerated over progressively colder waters to its northeast towards Ireland and Great Britain. Completin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huntsman's Leap
Huntsman's Leap is a deep, narrow and sheer-sided coastal chasm or ''geo'' developed in the Carboniferous Limestone of the Pembrokeshire Coast National Park, Pembrokeshire, Wales. Like the nearby Green Bridge of Wales and St Govan's Chapel, it is a popular visitor attraction which lies beside the Pembrokeshire Coast Path The Pembrokeshire Coast Path ( cy, Llwybr Arfordir Sir Benfro), often called the Pembrokeshire Coastal Path, is a designated National Trail in Pembrokeshire, southwest Wales. Established in 1970, it is a long-distance walking route, mostly at .... The site lies within the eastern sector of the Ministry of Defence's Castlemartin military training area, but access for the public is normally available. The name derives from local folklore, a hunter on horseback is said to have jumped from one side of the chasm to the other. On looking back and seeing the gap that he had jumped, he died of shock. References Coast of Pembrokeshire {{Wales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ministry Of Defence (United Kingdom)
The Ministry of Defence (MOD or MoD) is the department responsible for implementing the defence policy set by His Majesty's Government, and is the headquarters of the British Armed Forces. The MOD states that its principal objectives are to defend the United Kingdom of Great Britain and Northern Ireland and its interests and to strengthen international peace and stability. The MOD also manages day-to-day running of the armed forces, contingency planning and defence procurement. The expenditure, administration and policy of the MOD are scrutinised by the Defence Select Committee, except for Defence Intelligence which instead falls under the Intelligence and Security Committee of Parliament. History During the 1920s and 1930s, British civil servants and politicians, looking back at the performance of the state during the First World War, concluded that there was a need for greater co-ordination between the three services that made up the armed forces of the United Kingdom: t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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