|
Marble Arch Caves
The Marble Arch Caves are a series of natural limestone caves located near the village of Florencecourt in County Fermanagh, Northern Ireland. The caves are named after the nearby Marble Arch, a natural limestone arch at the upstream end of Cladagh Glen under which the Cladagh River flows. The caves are formed from three rivers draining off the northern slopes of Cuilcagh mountain, which combine underground to form the Cladagh. On the surface, the river emerges from the largest karst resurgence in Ireland, and one of the largest in the United Kingdom. At the Marble Arch Caves form the longest known cave system in Northern Ireland, and the karst is considered to be among the finest in the British Isles. History 18th–19th century: The Junction, Grand Gallery, and Pool Chamber The Marble Arch, Cladagh River resurgence and three large dolines on the plateau above the end of Cladagh Glen were all known well before underground exploration began; in fact the arch was a popu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gour Pool
Rimstone, also called gours, is a type of speleothem (cave formation) in the form of a stone dam. Rimstone is made up of calcite and other minerals that build up in cave pools. The formation created, which looks like stairs, often extends into flowstone above or below the original rimstone. Often, rimstone is covered with small, micro-gours on horizontal surfaces. Rimstone basins may form terraces that extend over hundreds of feet, with single basins known up to 200 feet long from Tham Xe Biang Fai in Laos. Formation Rimstone dams form where there is some gradient, and hence flow, over the edge of a pool. Crystallization begins to occur at the air/water/rock interface. The turbulence caused by flow over the edge of the building dam may contribute to the outgassing or loss of carbon dioxide from water, and result in precipitation of mineral on this edge. When dams form under running water, they tend to be higher when the passage is steeper. Shallow-gradient dams tend to be lower ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Underground River At Marble Arch, Ireland By E
Underground most commonly refers to: * Subterranea (geography), the regions beneath the surface of the Earth Underground may also refer to: Places * The Underground (Boston), a music club in the Allston neighborhood of Boston * The Underground (Stoke concert venue), a club/music venue based in Hanley, Stoke-on-Trent * Underground Atlanta, a shopping and entertainment district in the Five Points neighborhood of downtown Atlanta, Georgia * Buenos Aires Underground, a rapid transit system * London Underground, a rapid transit system Arts, entertainment, and media Films * ''Underground'' (1928 film), a drama by Anthony Asquith * ''Underground'' (1941 film), a war drama by Vincent Sherman * ''Underground'' (1970 film), a war drama starring Robert Goulet * ''Underground'' (1976 film), a documentary about the radical organization the Weathermen * ''Underground'' (1989 film), a film featuring Melora Walters * ''Underground'' (1995 film), a film by Emir Kusturica * ''The Underground' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnesium
Magnesium is a chemical element with the symbol Mg and atomic number 12. It is a shiny gray metal having a low density, low melting point and high chemical reactivity. Like the other alkaline earth metals (group 2 of the periodic table) it occurs naturally only in combination with other elements and it almost always has an oxidation state of +2. It reacts readily with air to form a thin passivation coating of magnesium oxide that inhibits further corrosion of the metal. The free metal burns with a brilliant-white light. The metal is obtained mainly by electrolysis of magnesium salts obtained from brine. It is less dense than aluminium and is used primarily as a component in strong and lightweight alloys that contain aluminium. In the cosmos, magnesium is produced in large, aging stars by the sequential addition of three helium nuclei to a carbon nucleus. When such stars explode as supernovas, much of the magnesium is expelled into the interstellar medium where it m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canvas
Canvas is an extremely durable plain-woven fabric used for making sails, tents, marquees, backpacks, shelters, as a support for oil painting and for other items for which sturdiness is required, as well as in such fashion objects as handbags, electronic device cases, and shoes. It is popularly used by artists as a painting surface, typically stretched across a wooden frame. Modern canvas is usually made of cotton or linen, or sometimes polyvinyl chloride (PVC), although historically it was made from hemp. It differs from other heavy cotton fabrics, such as denim, in being plain weave rather than twill weave. Canvas comes in two basic types: plain and duck. The threads in duck canvas are more tightly woven. The term ''duck'' comes from the Dutch word for cloth, ''doek''. In the United States, canvas is classified in two ways: by weight (ounces per square yard) and by a graded number system. The numbers run in reverse of the weight so a number 10 canvas is lighter than ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fermanagh District Council
Fermanagh District Council was a local council in Northern Ireland. It was created out of Fermanagh County Council and later merged with Omagh District Council in April 2015 under local government reorganisation to become Fermanagh and Omagh District Council. The borders of the district were very similar to those of the traditional County Fermanagh, containing all of that county plus a small section of County Tyrone in the Dromore Road (Irvinestown ward) and Kilskeery Road areas. Council headquarters were in Enniskillen. Electoral history 1973 to 1981 The elections of 1973 produced a dead heat with 10 Unionists and 10 Nationalists elected. For a while it looked as though Unionists might gain a majority due to an elected independent nationalist John Joe McCusker being ineligible, however in the end he held his seat. The deadlock raised the prospect of the British government having to intervene as both opposing blocs could not agree on the election of chairmen. Eventually howev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lyster Jameson
Henry Paul William Lyster Jameson (1875, Louth – 26 February 1922, West Mersea) was a zoologist, who studied pearl-formation. He also made contributions to speleology and encouraged the study of psychology in adult education. Life H. Lyster Jameson was born in Louth the son of Paul Lyster Jameson, the rector of Killincoole. He was educated at Trinity College Dublin. In 1895 he explored the Marble Arch Caves with Édouard-Alfred Martel, and was the first to describe fauna in the Mitchelstown Cave. After a year at the Royal College of Science in London, Jameson studied zoology under Otto Bütschli at the University of Heidelberg, writing his dissertation (1898) on , a species of spoon worms. Put in charge of a pearling station in British New Guinea, he studied the causes of pearl-formation. He continued this research at the Lancashire Sea Fisheries Station in Piel Island, Barrow-in-Furness, developing the parasitic theory of pearl-formation in the common sea mussel. After dev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dublin
Dublin (; , or ) is the capital and largest city of Ireland. On a bay at the mouth of the River Liffey, it is in the province of Leinster, bordered on the south by the Dublin Mountains, a part of the Wicklow Mountains range. At the 2016 census it had a population of 1,173,179, while the preliminary results of the 2022 census recorded that County Dublin as a whole had a population of 1,450,701, and that the population of the Greater Dublin Area was over 2 million, or roughly 40% of the Republic of Ireland's total population. A settlement was established in the area by the Gaels during or before the 7th century, followed by the Vikings. As the Kingdom of Dublin grew, it became Ireland's principal settlement by the 12th century Anglo-Norman invasion of Ireland. The city expanded rapidly from the 17th century and was briefly the second largest in the British Empire and sixth largest in Western Europe after the Acts of Union in 1800. Following independence in 1922, Dubli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Édouard-Alfred Martel
Édouard-Alfred Martel (1 July 1859, Pontoise, Val-d'Oise – 3 June 1938, Montbrison), the 'father of modern speleology', was a world pioneer of cave exploration, study, and documentation. Martel explored thousands of caves in his native France and many other countries, popularised the pursuit of cave exploration, introduced the concept of speleology as a distinct area of scientific study, maintained an extensive archive, and in 1895 founded , the first organisation devoted to cave science in the world. Life and Exploration Édouard-Alfred Martel was born in Pontoise, Seine-et-Oise on 1 July 1859. Born into a family of lawyers, he studied at the Lycée Condorcet in Paris. Early on, he became passionate about geography and the natural sciences and in 1877 he won first prize in an open competition for geography. He was a great reader of the works of Jules Verne. In 1866, while holidaying with his parents, he visited the Caves of Gargas in the Pyrenees. Other trips allowed him ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shakehole
A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. The term is sometimes used to refer to doline, enclosed depressions that are locally also known as ''vrtače'' and shakeholes, and to openings where surface water enters into underground passages known as ''ponor'', swallow hole or swallet. A ''cenote'' is a type of sinkhole that exposes groundwater underneath. A ''sink'' or ''stream sink'' are more general terms for sites that drain surface water, possibly by infiltration into sediment or crumbled rock. Most sinkholes are caused by karst processes – the chemical dissolution of carbonate rocks, collapse or suffosion processes. Sinkholes are usually circular and vary in size from tens to hundreds of meters both in diameter and depth, and vary in form from soil-lined bowls to bedrock-edged chasms. Sinkholes may form gradually or suddenly, and are found worldwide. Formation Natural processes Sinkholes may capture surf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Irish Speleology
The Speleological Union of Ireland (SUI) is the official representative body of cavers in Ireland, both in the Republic of Ireland and in Northern Ireland. It is affiliated with the Irish Cave Rescue Organisation. History The SUI was founded as the Speleological Society of Ireland in 1964 to promote speleology (the scientific study of caves) in Ireland. Jack Coleman was the first president. The society was reconstituted in 1983 as the Speleological Union of Ireland. In 2002 the SUI was set up as a limited company. Functions The SUI provides training for cave leaders and new cavers and represents cavers' interests in disputes with landowners. It also works to protect Irish caves from damage by human influence, including dumping, quarrying, development, and promotes a strong conservation ethic to cavers. The organisation promotes awareness of caves and safe caving, providing information for beginners wishing to try caving. The SUI publishes a scientific journal, ''Irish Spele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Henry (clergyman)
William Henry (died 1768) was an Anglo-Irish Anglican priest, who became Dean of Killaloe and Fellow of the Royal Society. Life Henry graduated Dublin Master of Arts (MA Dubl) at Trinity College, Dublin in 1748, and Bachelor of Divinity (BD) and Doctor of Divinity (DD) in 1750. He was the friend and chaplain to Josiah Hort, through whom he was collated to the benefice of Killesher in County Fermanagh, 1 October 1731. He later became rector of Urney, County Tyrone, in 1734. Henry was elected Fellow of the Royal Society of London on 20 February 1755, and became Dean of Killaloe 29 November 1761. His promotion as dean he owed to the patronage of the Shelburnes, John Petty, 1st Earl of Shelburne and William Petty, 2nd Earl of Shelburne, a connection via Hort and the linen manufacture of Ballymote. Henry died in Dublin on 13 Feb. 1768, and was interred at St. Ann's Church, Dawson Street there. He was an advocate for temperance, and for civil and religious liberty. Works Henry h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cave Exploration
Caving – also known as spelunking in the United States and Canada and potholing in the United Kingdom and Ireland – is the recreational pastime of exploring wild cave systems (as distinguished from show caves). In contrast, speleology is the scientific study of caves and the cave environment.Caving in New Zealand (from Te Ara: The Encyclopedia of New Zealand, Accessed 2012-11.) The challenges involved in caving vary according to the cave being visited; in addition to the total absence of light beyond the entrance, negotiating pitches, squeezes, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Shakehole")
