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Harrow Weald SSSI
Harrow Weald SSSI is a 3.7 hectare (9 acre) geological Site of Special Scientific Interest in Harrow Weald in the London Borough of Harrow. It was formerly part of the Stanmore and Harrow Weald Commons and Bentley Priory SSSI. It is a Geological Conservation Review site. It provides the most complete exposure of Pleistocene gravel beds above the Claygate Beds, the youngest layer of London Clay. They were formerly thought to have been of marine origin but recent research has cast doubt on this view. It is considered a key site for further studies. There is no public access but it can be viewed from Common Road and Harrow Weald Common. See also *List of Sites of Special Scientific Interest in Greater London In England, Site of Special Scientific Interest, Sites of Special Scientific Interest (SSSIs) are designated by Natural England, which is responsible for protecting England's natural environment. Designation as an SSSI gives legal protection to ... References {{coord, 5 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greater London
Greater London is an administrative area in England, coterminous with the London region, containing most of the continuous urban area of London. It contains 33 local government districts: the 32 London boroughs, which form a Ceremonial counties of England, ceremonial county also called Greater London, and the City of London. The Greater London Authority is responsible for strategic local government across the region, and regular local government is the responsibility of the borough councils and the City of London Corporation. Greater London is bordered by the ceremonial counties of Hertfordshire to the north, Essex to the north-east, Kent to the south-east, Surrey to the south, and Berkshire and Buckinghamshire to the west. Greater London has a land area of and had an estimated population of in . The ceremonial county of Greater London is only slightly smaller, with an area of and a population of in . The area is almost entirely urbanised and contains the majority of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 reserve (United Kingdom), national nature reserves, Ramsar Convention, Ramsar sites, Special Protection Areas, and Special Area of Conservation, Special Areas of Conservation. The acronym "SSSI" is often pronounced "triple-S I". Selection and conservation Sites notified for their Biology, biological interest are known as Biological SSSIs (or ASSIs), and those notified for geological or Physical geography, physiographic interest are Geological SSSIs (or ASSIs). Sites may be divided into management units, with some a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harrow Weald
Harrow Weald is a suburban district in Greater London, England. Located about north of Harrow, London, Harrow, Harrow Weald is formed from a leafy 1930s suburban development along with ancient woodland of Harrow Weald Common. It forms part of the London Borough of Harrow. Harrow Weald is bordered by Bushey Heath (north), Stanmore (west), Wealdstone (south), and is near to Headstone, London, Headstone and Hatch End. It is in the HA postcode area. Etymology The word is Old English in origin, meaning woodland. It was recorded as ''waldis'' in 1303 and ''welde'' in 1382, but the name ''Harrow Weald'' is not recorded until 1553. It was then part of the great Forest of Middlesex. Geography and locale Ancient woodland on high ground fills most of the northern part of Harrow Weald on the border of Greater London (and the traditional county of Middlesex) with Hertfordshire. The area is one of the highest in Greater London; the highest point in Middlesex is near the woods at . The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
London Borough Of Harrow
The London Borough of Harrow () is a London boroughs, London borough in northwest London, England; it forms part of Outer London. It borders four other London boroughs London Borough of Barnet, Barnet to the east of ancient Watling Street, Watling Street (now the A5 road), London Borough of Brent, Brent to the southeast, London Borough of Ealing, Ealing to the south and London Borough of Hillingdon, Hillingdon to the west and the Hertfordshire districts of Three Rivers District, Three Rivers and Hertsmere to the north. The local authority is Harrow London Borough Council. The London borough was formed in 1965, based on boundaries that had been established in 1934. The borough is made up of three towns: Harrow, London, Harrow, Pinner and Stanmore, but also includes western parts of Edgware. History The area of the modern borough broadly corresponds to the three ancient parishes of Harrow on the Hill, Great Stanmore and Little Stanmore (also known as Whitchurch), all of which were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geological Conservation Review
The Geological Conservation Review (GCR) is produced by the UK's Joint Nature Conservation Committee. It is designed to identify those sites of national and international importance needed to show all the key scientific elements of the geological and geomorphological features of Britain. These sites display sediments, rocks, minerals, fossils A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ..., and features of the landscape that make a special contribution to an understanding and appreciation of Earth science and the geological history of Britain, which stretches back more than three billion years. The intention of the project, which was devised in 1974 by George Black and William Wimbledon working for the Governmental advisory agency, the Nature Conservancy Council (NCC), was ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleistocene
The Pleistocene ( ; referred to colloquially as the ''ice age, Ice Age'') is the geological epoch (geology), epoch that lasted from 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 () 'most' and (; Latinized as ) 'new'. The aridification and cooling trends of the preceding Neogene were continued in the Pleistocene. The climate was strongly variable depending on the glacial cycle, oscillating between cold Glacial period, glacial periods and warmer Interglacial, int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
London Clay
The London Clay Formation is a Sediment#Shores and shallow seas, marine formation (geology), geological formation of Ypresian (early Eocene Epoch, c. 54-50 million years ago) age which outcrop, crops out in the southeast of England. The London Clay is well known for its fossil content. The fossils from the lower Eocene rocks indicate a moderately warm climate, the tropical or subtropical flora. Though sea levels changed during the deposition of the clay, the habitat was generally a lush forest – perhaps like in Indonesia or East Africa today – bordering a warm, shallow ocean. The London Clay is a stiff bluish clay which becomes brown when weathered and oxidized. Nodular lumps of pyrite are frequently found in the clay layers. Pyrite was produced by microbial activity (sulfate reducing bacteria) during clay sedimentation. Once clay is exposed to atmospheric oxygen, framboidal pyrite with a great specific surface is rapidly oxidized. Acid mine drainage, Pyrite oxidation produce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harrow Weald Common
Harrow Weald Common is an 18-hectare area of woodland, heath and pasture in Harrow Weald in the London Borough of Harrow. It is considered of considerable importance for wildlife, and it was formerly part of the ''Stanmore and Harrow Weald Commons and Bentley Priory'' Site of Special Scientific Interest, but in 1987 the boundaries of the SSSI were revised to exclude the Common. It has been designated by the Mayor of London as a Site of Metropolitan Importance for Nature Conservation. History The word ''weald'' is derived from Old English ''wald'', a wooded upland. Harrow Weald Common is one of the remnants of the once extensive Forest of Middlesex. In the 18th century it was a haunt of highwaymen. Following the inclosure acts, one of the rights granted to the commoners was gravel extraction, and this took place on a large scale in the 19th century. In the 1880s there was an attempt to get government agreement to the sale of the Common, but a successful campaign to oppose this wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Sites Of Special Scientific Interest In Greater London
In England, Site of Special Scientific Interest, Sites of Special Scientific Interest (SSSIs) are designated by Natural England, which is responsible for protecting England's natural environment. Designation as an SSSI gives legal protection to the most important wildlife and geological sites. As of August 2019, there are 37 sites designated in Greater London, 30 of which have been designated for their biological interest and 7 for their geological interest. Two sites are Special Protection Areas, three are Special Areas of Conservation, one is a Ramsar site, Ramsar wetland site, two are national nature reserve (United Kingdom), national nature reserves, nine are local nature reserves, seven are Geological Conservation Review sites, one is a ''Nature Conservation Review'' site, one is on the Register of Historic Parks and Gardens of special historic interest in England, Register of Historic Parks and Gardens and one includes a scheduled monument. Three sites are managed by the Lon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sites Of Special Scientific Interest In London
Site most often refers to: * Archaeological site * Campsite, a place used for overnight stay in an outdoor area * Construction site * Location, a point or an area on the Earth's surface or elsewhere * Website, a set of related web pages, typically with a common domain name It may also refer to: * Site, a National Register of Historic Places property type * SITE (originally known as ''Sculpture in the Environment''), an American architecture and design firm * Site (mathematics), a category C together with a Grothendieck topology on C * ''The Site'', a 1990s TV series that aired on MSNBC * SITE Intelligence Group, a for-profit organization tracking jihadist and white supremacist organizations * SITE Institute, a terrorism-tracking organization, precursor to the SITE Intelligence Group * Sindh Industrial and Trading Estate, a company in Sindh, Pakistan * SITE Centers, American commercial real estate company * SITE Town, a densely populated town in Karachi, Pakistan * S.I.T.E Indus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geology Of London
The geology of London comprises various differing layers of sedimentary rock upon which London, England is built. Oldest rocks The oldest rocks proved through boreholes to exist below London are the old, hard rocks of the Palaeozoic. These consist of Silurian mudstones and sandstones, generally overlain by Devonian strata which are largely of Old Red Sandstone. The Devonian rocks are absent in parts of South London. The Palaeozoic rocks dip southwards and are more than 1,000 metres below the English Channel. Above this is a 60-metre thick layer of Permeability (fluid), impermeable Gault clays. These clays are relatively young, only going back to the early Cretaceous which began around 144 million years ago. On top of these clays is a non-contiguous layer of Upper Greensand (geology), Greensand above which lies a rolling bed of white chalk about 200 metres thick. In the Lower Chalk and in the lower region of the Middle Chalk there are abundant fossilized Exoskeleton, shell fragments ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
