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Clearance Cairn
A clearance cairn is an irregular and unstructured collection of fieldstones which have been removed from arable land or pasture to allow for more effective agriculture and collected into a usually low mound or cairn. Commonly of Bronze Age origins, these cairns may be part of a cairnfield (a collection of closely spaced cairns) where some cairns might be funerary. Clearance cairns are a worldwide phenomenon wherever organised agriculture has been practised. Purpose of clearance By removing large and moderate size stones from the surface and sub-surface, ploughing can take place with much less potential damage taking place to the plough blade. Stones also prevent the growth of plants where they physically block access to the soil and their removal allows for a greater surface area for crops to grow and to allow for plants to grow to their full potential; Stones also increase drainage and may therefore deprive plants of moisture. Stones were removed from fields to allow for the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eglinton Clearance Cairn
Eglinton can refer to: People * Earl of Eglinton, a title in the Peerage of Scotland *Geoffrey Eglinton (1927–2016), British chemist * Timothy Eglinton, a British biogeoscientist *William Eglinton (1857–1933), a British spiritualist medium and fraud *J.Z. Eglinton, pseudonym of Walter H. Breen Jr. (1928–1993) *John Eglinton, pseudonym of William Kirkpatrick Magee (1868–1961) Places Australia *Eglinton, New South Wales, a suburb of Bathurst *Eglinton, Western Australia, a suburb of Perth Canada Toronto *Eglinton, Ontario, a former village now in Toronto *Eglinton (electoral district), a former federal electoral district *Eglinton (provincial electoral district), a former provincial electoral district *Eglinton Avenue, a main thoroughfare in Toronto *Eglinton Park *Eglinton Theatre *Line 5 Eglinton or Eglinton Crosstown Line, a light rail line under construction **Eglinton Maintenance and Storage Facility, a light-rail facility serving Line 5 Eglinton Canadian Territorie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plough Marks 2
A plough or plow ( US; both ) is a farm tool for loosening or turning the soil before sowing seed or planting. Ploughs were traditionally drawn by oxen and horses, but in modern farms are drawn by tractors. A plough may have a wooden, iron or steel frame, with a blade attached to cut and loosen the soil. It has been fundamental to farming for most of history. The earliest ploughs had no wheels; such a plough was known to the Romans as an ''aratrum''. Celtic peoples first came to use wheeled ploughs in the Roman era. The prime purpose of ploughing is to turn over the uppermost soil, bringing fresh nutrients to the surface while burying weeds and crop remains to decay. Trenches cut by the plough are called furrows. In modern use, a ploughed field is normally left to dry and then harrowed before planting. Ploughing and cultivating soil evens the content of the upper layer of soil, where most plant-feeder roots grow. Ploughs were initially powered by humans, but the use of farm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhön Biosphere Reserve
The Rhön Biosphere Reserve includes the entire central area of the Rhön Mountains, a low mountain range in the German states of Hesse, Bavaria and Thuringia. Aim In 1991 the Rhön was recognised at international level by UNESCO as a biosphere reserve. The aim of this biosphere reserve is, taking account of local agriculture, nature protection, tourism and trade, to ensure the variety and quality of habitats in the whole Rhön region. This involves creating a long term, economic environment for agriculture and trade that is in tune with the protection and care of nature and the local landscape. People are at the heart of the Rhön Biosphere Reserve. The idea is to have a so-called sustainable development, which harmonises economic and social issues as far as possible with environmental issues. Zoning The Biosphere Reserve currently has a total area of , of which 72,802 ha are in Bavaria, 63,564 ha in Hesse and 48,573 ha in Thuringia. From 1991-1995 a "Concept for the Prot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
English Heritage
English Heritage (officially the English Heritage Trust) is a charity that manages over 400 historic monuments, buildings and places. These include prehistoric sites, medieval castles, Roman forts and country houses. The charity states that it uses these properties to "bring the story of England to life for over 10 million people each year". Within its portfolio are Stonehenge, Dover Castle, Tintagel Castle and the best preserved parts of Hadrian's Wall. English Heritage also manages the London Blue Plaque scheme, which links influential historical figures to particular buildings. When originally formed in 1983, English Heritage was the operating name of an executive non-departmental public body of the British Government, officially titled the Historic Buildings and Monuments Commission for England, that ran the national system of heritage protection and managed a range of historic properties. It was created to combine the roles of existing bodies that had emerged from a long ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burnt Mound
A burnt mound is an archaeological feature consisting of a mound of shattered stones and charcoal, normally with an adjacent hearth and trough. The trough could be rock-cut, wood-lined or clay-lined to ensure it was watertight. Radiocarbon dates vary quite widely, the earliest being late Neolithic, with clusters of dates between 1900 and 1500 BC and 1200–800 BC, with some outliers in the Iron Age. There are also some dates that go into the Early Middle Ages. The technology used at burnt mounds has much greater antiquity and is found from the Palaeolithic onwards. Description and creation The shattered rock fragments are thought to be the remains of stones heated in fires, which were used to heat water. The shattering of the rock appears to have been the result of thermal shock when the heated stones were dropped into liquid, normally believed to be water. The mound is assumed to result from the periodic clearing out of the trough, with the stone fragments and charcoal be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ring Cairn
A ring cairn (also correctly termed a ring bank enclosure, but sometimes wrongly described as a ring barrow) is a circular or slightly oval, ring-shaped, low (maximum 0.5 metres high) embankment, several metres wide and from 8 to 20 metres in diameter. It is made of stone and earth and was originally empty in the centre. In several cases the middle of the ring was later used (at Hound Tor, for example, there is a stone cist in the centre). The low profile of these cairns is not always possible to make out without conducting excavations. Distribution These sites date to the Bronze Age and occur in Cornwall, Derbyshire ( Barbrook IV and V and Green Low) in England; and in Scotland, Wales and Ireland. Description The cairns look like flat variants of the significantly higher Clava cairns, which are often called ring cairns by laymen. The situation is rather different on the gritstones of the Eastern Uplands. Here it is more common to find smaller stone circles and rin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hut Circle
In archaeology, a hut circle is a circular or oval depression in the ground which may or may not have a low stone wall around it that used to be the foundation of a round house. The superstructure of such a house would have been made of timber and thatch. They are numerous in parts of upland Britain and most date to around the 2nd century BC. Hut circles are usually around in internal diameter, the rocks themselves being wide and around high. Hut circles were also almost certainly covered by conical rounded roofs and supported by posts that were internal and sometimes external. Wales There are more than 100 registered hut circles and enclosures in Wales. They are to be found in areas which have not been ploughed and the stones have not been disturbed. They are quite common in the north. Remains of a hut circle on Tre'r Ceiri - geograph.org.uk - 1571421.jpg, Tre'r Ceiri Celtic Iron Age hut circle Cytiau Celtaidd - Celtic Iron Age Huts at Mynydd Twr, Caergybi (Holyhead), Wale ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Round Barrow
A round barrow is a type of tumulus and is one of the most common types of archaeological monuments. Although concentrated in Europe, they are found in many parts of the world, probably because of their simple construction and universal purpose. In Britain, most of them were built between 2200BC and 1100BC. This was the Late Neolithic period to the Late Bronze Age. Later Iron Age barrows were mostly different, and sometimes square. Description At its simplest, a round barrow is a hemispherical mound of earth and/or stone raised over a burial placed in the middle. Beyond this there are numerous variations which may employ surrounding ditches, stone kerbs or flat berms between ditch and mound. Construction methods range from a single creation process of heaped material to a complex depositional sequence involving alternating layers of stone, soil and turf with timbers or wattle used to help hold the structure together. The center may be placed a stone chamber or cist or in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tannin
Tannins (or tannoids) are a class of astringent, polyphenolic biomolecules that bind to and precipitate proteins and various other organic compounds including amino acids and alkaloids. The term ''tannin'' (from Anglo-Norman ''tanner'', from Medieval Latin ''tannāre'', from ''tannum'', oak bark) refers to the use of oak and other bark in tanning animal hides into leather. By extension, the term ''tannin'' is widely applied to any large polyphenolic compound containing sufficient hydroxyls and other suitable groups (such as carboxyls) to form strong complexes with various macromolecules. The tannin compounds are widely distributed in many species of plants, where they play a role in protection from predation (acting as pesticides) and might help in regulating plant growth. The astringency from the tannins is what causes the dry and puckery feeling in the mouth following the consumption of unripened fruit, red wine or tea. Likewise, the destruction or modification of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bog-wood
Bog-wood (also spelled bogwood or bog wood), also known as abonos and, especially amongst pipe smokers, as morta, is a material from trees that have been buried in peat bogs and preserved from decay by the acidic and anaerobic bog conditions, sometimes for hundreds or even thousands of years. The wood is usually stained brown by tannins dissolved in the acidic water. Bog-wood represents the early stages in the fossilisation of wood, with further stages ultimately forming jet, lignite and coal over a period of many millions of years. Bog-wood may come from any tree species naturally growing near or in bogs, including oak (''Quercus'' – "bog oak"), pine (''Pinus''), yew (''Taxus''), swamp cypress (''Taxodium'') and kauri (''Agathis''). Bog-wood is often removed from fields and placed in clearance cairns. It is a rare form of timber that is claimed to be "comparable to some of the world's most expensive tropical hardwoods". Formation process Bog-wood is created from the trunks ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Sheffield
, mottoeng = To discover the causes of things , established = – University of SheffieldPredecessor institutions: – Sheffield Medical School – Firth College – Sheffield Technical School – University College of Sheffield , type = Public research university , academic_staff = 5,670 (2020) - including academic atypical staff , administrative_staff = , chancellor = Lady Justice Rafferty , vice_chancellor = Koen Lamberts , students = () , undergrad = () , postgrad = () , endowment = £46.7 million (2021) , budget = £741.0 million (2020–21) , city = Sheffield , state = South Yorkshire , country = England , coor = , campus = Urban , colours = Black & gold , affiliations = Russell Group WUN ACUN8 Group White Rose Sutton 30EQUISAMBAUniversities UK , website = , logo = The University of Sheffield (informally Sheffield University or TUOS) is a public research university in Sheffield, South Yorkshire, England. Its history traces back to the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ard (plough)
The ard, ard plough, or scratch plough is a simple light plough without a mouldboard. It is symmetrical on either side of its line of draft and is fitted with a symmetrical share that traces a shallow furrow but does not invert the soil. It began to be replaced in China by the heavy carruca turnplough in the 1st century, and in most of Europe from the 7th century. In its simplest form it resembles a Hoe (tool), hoe, consisting of a ''draft-pole'' (either composite or a single piece) pierced with a nearly vertical, wooden, spiked ''head'' (or ''stock'') which is dragged through the soil by draft animals and very rarely by people. The ard-head is at one end a ''stilt'' (handle) for steering and at the other a ''share'' (cutting blade) which gouges the surface ground. More sophisticated models have a composite pole, where the section attached to the head is called the ''draft-beam'', and the share may be made of stone or iron. Some have a cross-bar for handles or two separate stilts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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