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Geology Of Cambridgeshire
: ''This article describes the geology of the ceremonial county of Cambridgeshire. It thus includes the present City of Peterborough and the historic county of Huntingdonshire which was brought into the county in 1974.'' The geology of Cambridgeshire in eastern England largely consists of unconsolidated Quaternary sediments such as marine and estuarine alluvium and peat overlying deeply buried Jurassic and Cretaceous age sedimentary rocks. Jurassic Limestones, mudstones and sandstones of the Inferior Oolite Group and Great Oolite Group dating from the early to mid Jurassic Period are present at depth beneath western Cambridgeshire. The later Kellaways and Oxford Clay formations and Ampthill Clay formations all assigned to the Ancholme Group of middle to late Jurassic times underlie much of central Cambridgeshire. Cretaceous Cretaceous rocks come to the surface in the east of the county and beneath Cambridge itself including the lower and upper Greensand, the Gault Formation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geology
Geology () is a branch of natural science concerned with Earth and other astronomical objects, the features or rocks of which it is composed, and the processes by which they change over time. Modern geology significantly overlaps all other Earth sciences, including hydrology, and so is treated as one major aspect of integrated Earth system science and planetary science. Geology describes the structure of the Earth on and beneath its surface, and the processes that have shaped that structure. It also provides tools to determine the relative and absolute ages of rocks found in a given location, and also to describe the histories of those rocks. By combining these tools, geologists are able to chronicle the geological history of the Earth as a whole, and also to demonstrate the age of the Earth. Geology provides the primary evidence for plate tectonics, the evolutionary history of life, and the Earth's past climates. Geologists broadly study the properties and processes of E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Oolite Group
The Great Oolite Group is a Middle Jurassic stratigraphic unit that outcrops in southern England. It consists of a complex set of marine deposits primarily mudstone and bioclastic ooidal and fine grained limestone, deposited in nearshore to shelf settings. It is exposed at the surface as a variably thick belt extending roughly NE-SW from the coast of Dorset up to the Humber. It is also present at depth in the Weald and Wessex Basins, as well as offshore. Several of the constituent formations, notably the Taynton Limestone Formation and the Forest Marble Formation are notable for their fossil content, including those of dinosaurs and pterosaurs and some of the earliest mammals. Paleofauna * '' Cardiodon rugulosus'' * ''Cetiosaurus oxoniensis'' * '' Eoplophysis vetustus'' (stegosaurid indet) * ''Megalosaurus bucklandii'' * ''Proceratosaurus bradleyi'' * '' Seldsienean megistorhynchus'' See also * List of dinosaur-bearing rock formations ** List of stratigraphic units with fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geography Of Cambridgeshire
Geography (from Greek: , ''geographia''. Combination of Greek words ‘Geo’ (The Earth) and ‘Graphien’ (to describe), literally "earth description") is a field of science devoted to the study of the lands, features, inhabitants, and phenomena of Earth. The first recorded use of the word γεωγραφία was as a title of a book by Greek scholar Eratosthenes (276–194 BC). Geography is an all-encompassing discipline that seeks an understanding of Earth and its human and natural complexities—not merely where objects are, but also how they have changed and come to be. While geography is specific to Earth, many concepts can be applied more broadly to other celestial bodies in the field of planetary science. One such concept, the first law of geography, proposed by Waldo Tobler, is "everything is related to everything else, but near things are more related than distant things." Geography has been called "the world discipline" and "the bridge between the human and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geology Of England
The geology of England is mainly sedimentary. The youngest rocks are in the south east around London, progressing in age in a north westerly direction.Southampton University retrieved 21/1/07 The marks the division between younger, softer and low-lying rocks in the south east and the generally older and harder rocks of the north and west which give rise to higher relief in those regions. The geology of England is recognisable in the landscape of its , the building materials of its towns and its regional |
Geology Of The United Kingdom
The geology of Great Britain is renowned for its diversity. As a result of its eventful geological history, Great Britain shows a rich variety of landscapes across the constituent countries of England, Wales and Scotland. Rocks of almost all geological ages are represented at outcrop, from the Archaean onwards. Overview Seismographical research shows that the crust of the Earth below Great Britain is from 27 to 35 km (17 to 22 miles) thick. The oldest surface rocks are found in north west Scotland and are more than half as old as the planet. These rocks are thought to underlie much of Great Britain (although boreholes have only penetrated the first few kilometres), but next appear extensively at the surface in Brittany and the Channel Islands. The youngest rocks are found in south east England. Bedrock and past volcanism The bedrock geology consists of a complex mix of generally older metamorphic rocks overlain by varying sequences of sedimentary rocks into both of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ely, Cambridgeshire
Ely ( ) is a cathedral city in the East Cambridgeshire district of Cambridgeshire, England, about north-northeast of Cambridge and from London. Ely is built on a Kimmeridge Clay island which, at , is the highest land in the Fens. It was due to this topography that Ely was not waterlogged like the surrounding Fenland, and was an island separated from the mainland. Major rivers including the River Witham, Witham, River Welland, Welland, River Nene, Nene and River Great Ouse, Great Ouse feed into the Fens and, until draining commenced in the eighteenth century, formed freshwater marshes and Mere (lake), meres within which peat was laid down. Once the Fens were drained, this peat created a rich and fertile soil ideal for farming. The River Great Ouse was a significant means of transport until the Fens were drained and Ely ceased to be an island in the seventeenth century. The river is now a popular boating spot, and has a large marina. Although now surrounded by land, the city ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
March, Cambridgeshire
March is a Fenland market town and civil parish in the Isle of Ely area of Cambridgeshire, England. It was the county town of the Isle of Ely which was a separate administrative county from 1889 to 1965. The administrative centre of Fenland District Council is located in the town. The town grew by becoming an important railway centre. Like many Fenland towns, March was once an island surrounded by marshes. It occupied the second largest "island" in the Great Level. As the land was drained, the town grew and prospered as a trading and religious centre. It was also a minor port before, in more recent times, a market town and an administrative and railway centre. March is situated on the banks of the navigable old course of the River Nene, today mainly used by pleasure boats. History March was recorded as ''Merche'' in the Domesday Book of 1086, perhaps from the Old English ''mearc'' meaning 'boundary'. Modern March lies on the course of the Fen Causeway, a Roman road, and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newmarket, Suffolk
Newmarket is a market town and civil parish in the West Suffolk district of Suffolk, England. Located (14 miles) west of Bury St Edmunds and (14 miles) northeast of Cambridge. It is considered the birthplace and global centre of thoroughbred horse racing. It is a major local business cluster, with annual investment rivalling that of the Cambridge Science Park, the other major cluster in the region. It is the largest racehorse training centre in Britain, the largest racehorse breeding centre in the country, home to most major British horseracing institutions, and a key global centre for horse health. Two Classic races, and an additional three British Champions Series races are held at Newmarket every year. The town has had close royal connections since the time of James I, who built a palace there, and was also a base for Charles I, Charles II, and most monarchs since. Elizabeth II visited the town often to see her horses in training. Newmarket has over fifty horse training stabl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royston, Hertfordshire
Royston is a town and Civil parishes in England, civil parish in the North Hertfordshire, District of North Hertfordshire and county of Hertfordshire in England. It is situated on the Prime meridian (Greenwich), Greenwich Meridian, which brushes the town's eastern boundary, and at the northernmost apex of the county on the same latitude as towns such as Milton Keynes and Ipswich. It is about north of central London in a rural area. Before the boundary changes of the 1890s, the boundary between Hertfordshire and Cambridgeshire ran east–west through the centre of town along the middle of Melbourn Street. The town has a population of 15,781 as of 2011.Office for National Statistics : ''Census 2011 : Parish Headcounts : North Hertfordshire'' Retrieved 2013-03-18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacial Till
image:Geschiebemergel.JPG, Closeup of glacial till. Note that the larger grains (pebbles and gravel) in the till are completely surrounded by the matrix of finer material (silt and sand), and this characteristic, known as ''matrix support'', is diagnostic of till. image:Glacial till exposed in roadcut-750px.jpg, Glacial till with tufts of grass Till or glacial till is unsorted glacier, glacial sediment. Till is derived from the erosion and entrainment of material by the moving ice of a glacier. It is deposited some distance down-ice to form terminal, lateral, medial and ground moraines. Till is classified into primary deposits, laid down directly by glaciers, and secondary deposits, reworked by fluvial transport and other processes. Description Till is a form of '' glacial drift'', which is rock material transported by a glacier and deposited directly from the ice or from running water emerging from the ice. It is distinguished from other forms of drift in that it is depos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chalk Group
The Chalk Group (often just called the Chalk) is the lithostratigraphic unit (a certain number of rock strata) which contains the Upper Cretaceous limestone succession in southern and eastern England. The same or similar rock sequences occur across the wider northwest European chalk 'province'. It is characterised by thick deposits of chalk, a soft porous white limestone, deposited in a marine environment. Chalk is a limestone that consists of coccolith biomicrite. A biomicrite is a limestone composed of fossil debris ("bio") and calcium carbonate mud ("micrite"). Most of the fossil debris in chalk consists of the microscopic plates, which are called coccoliths, of microscopic green algae known as coccolithophores. In addition to the coccoliths, the fossil debris includes a variable, but minor, percentage of the fragments of foraminifera, ostracods and mollusks. The coccolithophores lived in the upper part of the water column. When they died, the microscopic calcium carbonate p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gault
The Gault Formation is a geological formation of stiff blue clay deposited in a calm, fairly deep-water marine environment during the Lower Cretaceous Period (Upper and Middle Albian). It is well exposed in the coastal cliffs at Copt Point in Folkestone, Kent, England, where it overlays the Lower Greensand formation, and underlies the Upper Greensand Formation. These represent different facies, with the sandier parts probably being deposited close to the shore and the clay in quieter water further from the source of sediment; both are believed to be shallow-water deposits. The etymology of the name is uncertain and probably of local origin. Distribution It is found in exposure on the south side of the North Downs and the north side of the South Downs. It is also to be found beneath the scarp of the Berkshire Downs, in the Vale of White Horse, in Oxfordshire, England, and on the Isle of Wight where it is known as Blue Slipper. Gault underlies the chalk beneath the London Basin, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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