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Nightingale Valley
Nightingale Valley () is a 5.4 hectare geological Site of Special Scientific Interest near the town of Portishead, North Somerset, notified in 1989. This site in the Vale of Gordano is listed because of Pleistocene ‘plateau-deposits’ which include ‘cannon-shot’ gravels, fine sandy gravels and silty gravels with a wide range of erratic lithologies The lithology of a rock unit is a description of its physical characteristics visible at outcrop, in hand or core samples, or with low magnification microscopy. Physical characteristics include colour, texture, grain size, and composition. Lit .... (accessed 12 July 2006) References [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nightingale Valley
Nightingale Valley () is a 5.4 hectare geological Site of Special Scientific Interest near the town of Portishead, North Somerset, notified in 1989. This site in the Vale of Gordano is listed because of Pleistocene ‘plateau-deposits’ which include ‘cannon-shot’ gravels, fine sandy gravels and silty gravels with a wide range of erratic lithologies The lithology of a rock unit is a description of its physical characteristics visible at outcrop, in hand or core samples, or with low magnification microscopy. Physical characteristics include colour, texture, grain size, and composition. Lit .... (accessed 12 July 2006) References [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hectare
The hectare (; SI symbol: ha) is a non-SI metric unit of area equal to a square with 100-metre sides (1 hm2), or 10,000 m2, and is primarily used in the measurement of land. There are 100 hectares in one square kilometre. An acre is about and one hectare contains about . In 1795, when the metric system was introduced, the ''are'' was defined as 100 square metres, or one square decametre, and the hectare ("hecto-" + "are") was thus 100 ''ares'' or km2 (10,000 square metres). When the metric system was further rationalised in 1960, resulting in the International System of Units (), the ''are'' was not included as a recognised unit. The hectare, however, remains as a non-SI unit accepted for use with the SI and whose use is "expected to continue indefinitely". Though the dekare/decare daa (1,000 m2) and are (100 m2) are not officially "accepted for use", they are still used in some contexts. Description The hectare (), although not a unit of SI, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geological Site Of Special Scientific Interest
A Site of Special Scientific Interest (SSSI) in Great Britain or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland is a conservation designation denoting a protected area in the United Kingdom and Isle of Man. SSSI/ASSIs are the basic building block of site-based nature conservation legislation and most other legal nature/geological conservation designations in the United Kingdom are based upon them, including national nature reserves, Ramsar sites, Special Protection Areas, and Special Areas of Conservation. The acronym "SSSI" is often pronounced "triple-S I". Selection and conservation Sites notified for their biological interest are known as Biological SSSIs (or ASSIs), and those notified for geological or physiographic interest are Geological SSSIs (or ASSIs). Sites may be divided into management units, with some areas including units that are noted for both biological and geological interest. Biological Biological SSSI/ASSIs may b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portishead, Somerset
Portishead () is a coastal village on the Severn Estuary, 8 miles (12 km) to the west of Bristol, but within the unitary authority, unitary district of North Somerset, which falls within the Ceremonial counties of England, ceremonial county of Somerset, England. It has a population of around 25,000, with a growth rate considerably in excess of surrounding towns. Portishead has a long history as a fishing port. As a Royal Manor it expanded rapidly during the early 19th century around the docks, with supporting transport infrastructure. A Portishead power station, power station and chemical works were added in the 20th century, but the dock and industrial facilities have since closed and been redeveloped into a marina and residential areas. Portishead was also the telephone control centre used by British Telecom (BT) for non-direct dialled calls to maritime vessels, a service known as Portishead Radio. The town's population is expanding, and Portishead is now primarily a dormi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Somerset
North Somerset is a unitary authorities of England, unitary district in Somerset, South West England. Whilst its area covers part of the Ceremonial counties of England, ceremonial county of Somerset, it is administered independently of the non-metropolitan county. Its administrative headquarters is in the town hall in Weston-super-Mare. North Somerset, which was renamed from the Woodspring district in 1996, borders the city and county of Bristol and the local government areas of Bath and North East Somerset, Mendip District, Mendip and Sedgemoor. The area comprises the parliamentary constituencies of Weston-super-Mare (UK Parliament constituency), Weston-super-Mare and North Somerset (UK Parliament constituency), North Somerset. History Between 1 April 1974 and 31 March 1996, this area was the Woodspring Districts of England, district of the county of Avon (named after Woodspring Priory, an isolated medieval church near the coast just north east of Weston-super-Mare). The dist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SSSI Notification
A Site of Special Scientific Interest (SSSI) in Great Britain or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland is a conservation designation denoting a protected area in the United Kingdom and Isle of Man. SSSI/ASSIs are the basic building block of site-based nature conservation legislation and most other legal nature/geological conservation designations in the United Kingdom are based upon them, including national nature reserves, Ramsar sites, Special Protection Areas, and Special Areas of Conservation. The acronym "SSSI" is often pronounced "triple-S I". Selection and conservation Sites notified for their biological interest are known as Biological SSSIs (or ASSIs), and those notified for geological or physiographic interest are Geological SSSIs (or ASSIs). Sites may be divided into management units, with some areas including units that are noted for both biological and geological interest. Biological Biological SSSI/ASSIs may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gordano Valley
Gordano (or the Gordano Valley; ) is an area of North Somerset, in England. It has been designated as a National Nature Reserve. The name Gordano comes from Old English and is descriptive of the triangular shape of the whole valley from Clevedon to Portishead, being the ablative singular of the Latinised form of ''Gorden'' meaning ''muddy valley''. The valley runs roughly north-east to south-west, between Carboniferous limestone ridges extending along the coastline between Clevedon and Portishead, and another ridge extending between Clevedon and Easton in Gordano. The area includes the villages of Clapton in Gordano, Weston in Gordano, Easton in Gordano, Walton in Gordano, Portbury and Sheepway. The M5 motorway runs along the south side of the valley, splitting briefly into two levels - the south-west-bound level running above the north-east-bound carriageway. The Gordano motorway service station is at the eastern end of the valley, near the Royal Portbury Dock and the A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleistocene
The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in 2009 by the International Union of Geological Sciences, the cutoff of the Pleistocene and the preceding Pliocene was regarded as being 1.806 million years Before Present (BP). Publications from earlier years may use either definition of the period. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archaeology. The name is a combination of Ancient Greek grc, label=none, πλεῖστος, pleīstos, most and grc, label=none, καινός, kainós (latinized as ), 'new'. At the end of the preceding Pliocene, the previously isolated North and South American continents were joined by the Isthmus of Panama, causing Great American Interchang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lithologies
The lithology of a rock unit is a description of its physical characteristics visible at outcrop, in hand or core samples, or with low magnification microscopy. Physical characteristics include colour, texture, grain size, and composition. Lithology may refer to either a detailed description of these characteristics, or a summary of the gross physical character of a rock. Examples of lithologies in the second sense include sandstone, slate, basalt, or limestone. Lithology is the basis of subdividing rock sequences into individual lithostratigraphic units for the purposes of mapping and correlation between areas. In certain applications, such as site investigations, lithology is described using a standard terminology such as in the European geotechnical standard Eurocode 7. Rock type The naming of a lithology is based on the rock type. The three major rock types are igneous, sedimentary, and metamorphic. Igneous rocks are formed directly from magma, which is a mixture of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sites Of Special Scientific Interest In Avon
__NOTOC__ This is a list of the Sites of Special Scientific Interest (SSSIs) in the former county of Avon, England, United Kingdom. In England the body responsible for designating SSSIs is Natural England, which chooses a site because of its fauna, flora, geological or physiographical features. Although the county of Avon no longer exists, Natural England still uses its former borders to mark one of its Areas of Search. As of 2006, there are 86 sites designated in this Area of Search, of which 38 have been designated due to their biological interest, 39 due to their geological interest, and 9 for both. Natural England took over the role of designating and managing SSSIs from English Nature in October 2006 when it was formed from the amalgamation of English Nature, parts of the Countryside Agency and the Rural Development Service. The English counties were revised under the 1974 reorganisation of local government. Until the 2010s, Natural England, which maintains the database ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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