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Nidderdale Caves
The Nidderdale Caves are a series of caves in Upper Nidderdale in North Yorkshire, England. There are two cave systems and most of the caves are in some way linked with one or the other. The smaller system is the Eglin cave system in the valley of How Stean Beck, a tributary of the River Nidd, associated with How Stean Gorge. The larger system is the Goyden cave system under the valley of the River Nidd, which flows east from Scar House Reservoir, then south, and shortly after disappears underground down several sink holes to reappear at the rising just beyond the village of Lofthouse. Cavers are able to access several sections of this system via the different entrances. The caves are a Site of Special Scientific Interest designated in 1987 under the name Upper Nidderdale. Entrances From north to south: Manchester Hole(NGR SE 100736 Length 578m) Bax pot(alternative entrance to Manchester Hole Divers chamber, providing through trip) Lesser Stream pot(entrance into connecti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upper Nidderdale
Nidderdale, historically also known as Netherdale, is one of the Yorkshire Dales (although outside the Yorkshire Dales National Park) in North Yorkshire, England. It is the upper valley of the River Nidd, which flows south underground and then along the dale, forming several reservoirs including the Gouthwaite Reservoir, before turning east and eventually joining the River Ouse. The only town in the dale is Pateley Bridge. Other settlements include Wath, Ramsgill, Lofthouse, and Middlesmoor above Pateley Bridge, and Bewerley, Glasshouses, Summerbridge, Dacre, Darley, Birstwith, Hampsthwaite and Kettlesing below Pateley. Area of Outstanding Natural Beauty Nidderdale was designated an Area of Outstanding Natural Beauty in 1994. The AONB covers a much wider area than Nidderdale. In addition to Nidderdale itself (above Hampsthwaite), the AONB includes part of lower Wharfedale, the Washburn valley and part of lower Wensleydale, including Jervaulx Abbey and the side v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yoredale Series
The Yoredale Series, in geology, is a now obsolete term for a local phase of the Carboniferous rocks of the north of England, ranging in age from the Asbian Substage to the Yeadonian Substage. The term Yoredale Group is nowadays applied to the same broad suite of rocks. The name was introduced by J. Phillips on account of the typical development of the phase in Yoredale (now generally known as Wensleydale), Yorkshire. Properties and condition In the Yorkshire Dales the Carboniferous rocks assume an aspect very different from that which obtains in the South. Beds of detrital sediment, sandstones, shales and occasional ironstones and thin coals separate the limestones into well-defined beds. These limestone beds have received various names of local significance (Hardraw Scar, Simonstone, Middle, Underset, Main and many others), and owing to the country being little disturbed by faulting and being much cut up by the streams, they stand out as escarpments on either side of the va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caves Of North Yorkshire
A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word ''cave'' can refer to smaller openings such as sea caves, rock shelters, and grottos, that extend a relatively short distance into the rock and they are called ''exogene'' caves. Caves which extend further underground than the opening is wide are called ''endogene'' caves. Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called ''caving'', ''potholing'', or ''spelunking''. Formation types The formation and development of caves is known as ''speleogenesis''; it can occur over the course of millions of years. Caves can range widely in size, and are formed by various geological processes. These may involve a combination of chemical processes, erosion by water, tectonic forces, microorganism ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nidderdale
Nidderdale, historically also known as Netherdale, is one of the Yorkshire Dales (although outside the Yorkshire Dales National Park) in North Yorkshire, England. It is the upper valley of the River Nidd, which flows south underground and then along the dale, forming several reservoirs including the Gouthwaite Reservoir, before turning east and eventually joining the River Ouse. The only town in the dale is Pateley Bridge. Other settlements include Wath, Ramsgill, Lofthouse, and Middlesmoor above Pateley Bridge, and Bewerley, Glasshouses, Summerbridge, Dacre, Darley, Birstwith, Hampsthwaite and Kettlesing below Pateley. Area of Outstanding Natural Beauty Nidderdale was designated an Area of Outstanding Natural Beauty in 1994. The AONB covers a much wider area than Nidderdale. In addition to Nidderdale itself (above Hampsthwaite), the AONB includes part of lower Wharfedale, the Washburn valley and part of lower Wensleydale, including Jervaulx Abbey and the side v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crinoid
Crinoids are marine animals that make up the class Crinoidea. Crinoids that are attached to the sea bottom by a stalk in their adult form are commonly called sea lilies, while the unstalked forms are called feather stars or comatulids, which are members of the largest crinoid order, Comatulida. Crinoids are echinoderms in the phylum Echinodermata, which also includes the starfish, brittle stars, sea urchins and sea cucumbers. They live in both shallow water and in depths as great as . Adult crinoids are characterised by having the mouth located on the upper surface. This is surrounded by feeding arms, and is linked to a U-shaped gut, with the anus being located on the oral disc near the mouth. Although the basic echinoderm pattern of fivefold symmetry can be recognised, in most crinoids the five arms are subdivided into ten or more. These have feathery pinnules and are spread wide to gather planktonic particles from the water. At some stage in their lives, most crinoids have ... [...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] |
Phreatic
''Phreatic'' is a term used in hydrology to refer to aquifers, in speleology to refer to cave passages, and in volcanology to refer to a type of volcanic eruption. Hydrology The term phreatic (the word originates from the Greek , meaning "well" or "spring") is used in hydrology and the earth sciences to refer to matters relating to ground water (an aquifer) below the water table. The term 'phreatic surface' indicates the location where the pore water pressure is under atmospheric conditions (i.e. the pressure head is zero). This surface normally coincides with the water table. The slope of the phreatic surface is assumed to indicate the direction of ground water movement in an unconfined aquifer. The phreatic zone, below the phreatic surface where rock and soil is saturated with water, is the counterpart of the vadose zone, or unsaturated zone, above. Unconfined aquifers are also referred to as phreatic aquifers because their upper boundary is provided by the phreatic surface ... [...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 minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( 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 ( laminae) less than one centimeter in thickness. This property is called '' 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 more narrow 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 into thin layers, often splintery and usually parallel to the otherwise indistinguishable beddin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pennines
The Pennines (), also known as the Pennine Chain or Pennine Hills, are a range of uplands running between three regions of Northern England: North West England on the west, North East England and Yorkshire and the Humber on the east. Commonly described as the "backbone of England", the range stretches northwards from the Peak District at the southern end, through the South Pennines, Yorkshire Dales and North Pennines to the Tyne Gap, which separates the range from the Border Moors and Cheviot Hills across the Anglo-Scottish border, although some definitions include them. South of the Aire Gap is a western spur into east Lancashire, comprising the Rossendale Fells, West Pennine Moors and the Bowland Fells in North Lancashire. The Howgill Fells and Orton Fells in Cumbria are sometimes considered to be Pennine spurs to the west of the range. The Pennines are an important water catchment area with numerous reservoirs in the head streams of the river valleys. The North Pennin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Whernside
Great Whernside is a fell in the Yorkshire Dales, England, not to be confused with Whernside, some to the west. Its summit is the highest point of the eastern flank of Wharfedale above Kettlewell. Great Whernside forms the watershed between Wharfedale and Nidderdale, and is on the boundary between the Yorkshire Dales National Park and Nidderdale Area of Outstanding Natural Beauty. The River Nidd rises on the eastern slopes of Great Whernside, above Angram Reservoir. Name The name ''Whernside'', first recorded in 1214 as ''Querneside'', is of Old English origin. It is derived from ''cweorn'' 'quern' or 'millstone' and ''sīde'' 'hillside', so means "hillside where millstones are found". The upper part of the hill is composed of millstone grit, and there were once quarries on the Wharfedale side. According to one source the name was originally applied to the hillside on the Wharfedale side, and then extended to the whole hill as seen from Wharfedale. The hill as seen fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wharfedale
Wharfedale ( ) is the valley of the upper parts of the River Wharfe and one of the Yorkshire Dales. It is situated within the districts of Craven and Harrogate in North Yorkshire, and the cities of Leeds and Bradford in West Yorkshire. It is the upper valley of the River Wharfe. Towns and villages in Wharfedale (downstream, from west to east) include Buckden, Kettlewell, Conistone, Grassington, Hebden, Bolton Abbey, Addingham, Ilkley, Burley-in-Wharfedale, Otley, Pool-in-Wharfedale, Arthington, Collingham and Wetherby. Beyond Wetherby, the valley opens out and becomes part of the Vale of York. The section from the river's source to around Addingham is known as ''Upper Wharfedale'' and lies in North Yorkshire and in the Yorkshire Dales National Park. The first or so is known as Langstrothdale, including the settlements of Beckermonds, Yockenthwaite and Hubberholme, famous for its church, the resting place of the writer J. B. Priestley. As it turns southwards, the Wharfe the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vadose
The vadose zone, also termed the unsaturated zone, is the part of Earth between the land surface and the top of the phreatic zone, the position at which the groundwater (the water in the soil's pores) is at atmospheric pressure ("vadose" is from the Latin word for "shallow"). Hence, the vadose zone extends from the top of the ground surface to the water table. Water in the vadose zone has a pressure head less than atmospheric pressure, and is retained by a combination of adhesion (''funiculary groundwater''), and capillary action (''capillary groundwater''). If the vadose zone envelops soil, the water contained therein is termed soil moisture. In fine grained soils, capillary action can cause the pores of the soil to be fully saturated above the water table at a pressure less than atmospheric. The vadose zone does not include the area that is still saturated above the water table, often referred to as the capillary fringe. Freeze, R.A. and Cherry, J.A., 1979. Groundwater. Engl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
