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Bath Oolite Formation
The Great Oolite Group is a Middle Jurassic Stratigraphy, stratigraphic unit that outcrops in southern England. It consists of a complex set of marine deposits primarily mudstone and Bioclast, bioclastic Ooid, ooidal and Grain size, fine grained limestone, deposited in Littoral zone, nearshore to Continental shelf, 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 Basin, 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, Cardiodon rugulosus'' * ''Cetiosaurus, Cetiosaurus oxoniensis'' * Dromaeosauridae, Dromaeosauridae indet. * ''Eoplophysis, Eoplophysis vetustus'' (stegosaurid indet) * ''Megalosaurus, Megalo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Combe Down And Bathampton Down Mines
Combe Down and Bathampton Down Quarries () make up a 6.22 hectare (15.37 acre) Site of Special Scientific Interest (SSSI) in Bath and North East Somerset, England, important for its bat population. The disused quarries date from the 17th and 18th centuries and were the source of Bath stone for the city of Bath and elsewhere in the UK. A five-year project to stabilise the quarry workings was largely completed by November 2009. Geology Combe Down forms a plateau capped by Great Oolite limestones between the valley of the River Avon and Horsecombe Vale. The geology of the region is dominated by rocks of Middle and Early Jurassic ages. The Great Oolite is the uppermost lithology, underlain by the clays of the Fuller's Earth Formation, which in turn is underlain by limestones of the Inferior Oolite and the Midford Sands of the Lias. The Great and Inferior Oolite formations provide effective aquifers (rock in which water can be stored and pass through) for public and private water ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blisworth Limestone
The Blisworth Limestone Formation is a geological formation primarily consisting of limestone deposited during the Bathonian stage of the Middle Jurassic, found in the Jurassic ridge which extends north and south through England. It was laid down in the shallows of the Jurassic sea and is part of the more widely defined Great Oolite Group. It was previously known as the Great Oolite Limestone, White Limestone and the Snitterby Limestone Formation. It is the lateral equivalent of the White Limestone Formation From the Jurassic ridge it extends eastwards below the later deposits and in the North Sea terminology, it is part of the West Sole Group. (Cameron p. 74) Formation The Blisworth limestone lies above the Upper Estuarine Series of strata. The latter was formed close to the coast where rivers flowed from the London-Brabant Island. The land sank a little in relation to the sea so the site lay a little further offshore. In the hot, shallow sea, the water partially evaporated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mudstone
Mudstone, a type of mudrock, is a fine-grained sedimentary rock whose original constituents were clays or muds. Mudstone is distinguished from ''shale'' by its lack of fissility.Blatt, H., and R.J. Tracy, 1996, ''Petrology.'' New York, New York, W. H. Freeman, 2nd ed, 529 pp. The term ''mudstone'' is also used to describe carbonate rocks (limestone or dolomite) that are composed predominantly of carbonate mud. However, in most contexts, the term refers to siliciclastic mudstone, composed mostly of silicate minerals. The NASA Curiosity rover has found deposits of mudstone on Mars that contain organic substances such as propane, benzene and toluene. Definition There is not a single definition of mudstone that has gained general acceptance,Boggs 2006, p.143 though there is wide agreement that mudstones are fine-grained sedimentary rocks, composed mostly of silicate grains with a grain size less than . Individual grains this size are too small to be distinguished without a micros ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stratigraphy
Stratigraphy is a branch of geology concerned with the study of rock layers (strata) and layering (stratification). It is primarily used in the study of sedimentary and layered volcanic rocks. Stratigraphy has three related subfields: lithostratigraphy (lithologic stratigraphy), biostratigraphy (biologic stratigraphy), and chronostratigraphy (stratigraphy by age). Historical development Catholic priest Nicholas Steno established the theoretical basis for stratigraphy when he introduced the law of superposition, the principle of original horizontality and the principle of lateral continuity in a 1669 work on the fossilization of organic remains in layers of sediment. The first practical large-scale application of stratigraphy was by William Smith in the 1790s and early 19th century. Known as the "Father of English geology", Smith recognized the significance of strata or rock layering and the importance of fossil markers for correlating strata; he created the first geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middle Jurassic
The Middle Jurassic is the second Epoch (geology), epoch of the Jurassic Period (geology), Period. It lasted from about 174.1 to 161.5 million years ago. Fossils of land-dwelling animals, such as dinosaurs, from the Middle Jurassic are relatively rare, but geological formations containing land animal fossils include the Forest Marble Formation in England, the Kilmaluag Formation in Scotland,British Geological Survey. 2011Stratigraphic framework for the Middle Jurassic strata of Great Britain and the adjoining continental shelf: research report RR/11/06 British Geological Survey, Keyworth, Nottingham. the Calcaire de Caen of France, the Daohugou Beds in China, the Itat Formation in Russia, the Tiouraren Formation of Niger, and the Isalo III Formation of western Madagascar. Rocks of the Middle Jurassic were formerly (until about 1980s) in Europe called ''Dogger'' or ''Brown Jurassic''. Paleogeography During the Middle Jurassic Epoch, Pangaea began to separate into Laurasia and Gond ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norfolk
Norfolk ( ) is a Ceremonial counties of England, ceremonial county in England, located in East Anglia and officially part of the East of England region. It borders Lincolnshire and The Wash to the north-west, the North Sea to the north and east, Cambridgeshire to the west, and Suffolk to the south. The largest settlement is the city of Norwich. The county has an area of and a population of 859,400. It is largely rural with few large towns: after Norwich (147,895), the largest settlements are King's Lynn (42,800) in the north-west, Great Yarmouth (38,693) in the east, and Thetford (24,340) in the south. For local government purposes Norfolk is a non-metropolitan county with seven districts. The centre of Norfolk is gently undulating lowland. To the east are the Broads, a network of rivers and lakes which extend into Suffolk and which are protected by the Broads Authority, which give them a similar status to a National parks of England and Wales, national park. To the west the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorset
Dorset ( ; Archaism, archaically: Dorsetshire , ) is a Ceremonial counties of England, ceremonial county in South West England. It is bordered by Somerset to the north-west, Wiltshire to the north and the north-east, Hampshire to the east, the Isle of Wight across the Solent to the south-east, the English Channel to the south, and Devon to the west. The largest settlement is Bournemouth, and the county town is Dorchester, Dorset, Dorchester. The county has an area of and a population of 772,268. Around half of the population lives in the South East Dorset conurbation, which contains three of the county's largest settlements: Bournemouth (183,491), Poole (151,500), and Christchurch, Dorset, Christchurch (31,372). The remainder of the county is largely rural, and its principal towns are Weymouth, Dorset, Weymouth (53,427) and Dorchester, Dorset, Dorchester (21,366). Dorset contains two Unitary authorities in England, unitary districts: Bournemouth, Christchurch and Poole (BCP) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inferior Oolite Group
The Inferior Oolite is a sequence of Jurassic age sedimentary rocks in Europe. It was deposited during the Middle Jurassic.Weishampel, David B; et al. (2004). "Dinosaur distribution (Middle Jurassic, Europe)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 538–541. . The Inferior Oolite Group as more recently defined is a Jurassic lithostratigraphy, lithostratigraphic group (stratigraphy), group (a sequence of rock strata) in southern and eastern England . It has been variously known in the past as the Under Oolite (or Oolyte), the Inferior Oolite, the Inferior Oolite Series and the Redbourne Group. Outcrops The rocks are exposed from Dorset and Somerset eastwards and northwards through the English Midlands to Yorkshire. It is present at depth in the Wessex-Weald Basin, where it reaches its greatest thickness of 120 m. Lithology and stratigraphy The group consists of up to 120 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancholme Group
The Ancholme Group is a Group (geology), geological group in England. It preserves fossils dating back to the Jurassic Period (geology), period. It has previously been referred to as the Ancholme Clay Group. The group consists of predominantly grey, marine mudstone and silty mudstone with beds of argillaceous limestone nodules. In parts of its range it interfingers with the Corallian Group, which predominantly consists of coralliferous limestones. See also * List of fossiliferous stratigraphic units in England References * Jurassic England {{England-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tresham Rock Formation
Tresham is a village in Gloucestershire, England. It was transferred back from the county of Avon in 1991, having been in Gloucestershire before 1972. It is now in Stroud District, and forms part of the civil parish of Hillesley and Tresham. It is on the Monarch's Way and near the Cotswold Way (). According to Pevsner Tresham Church, built in a Norman style on the site of a previous church building, dates from 1855. Burden Court Farm was originally the home of Charles II's Lord Chief Justice Sir Matthew Hale Sir Matthew Hale (1 November 1609 – 25 December 1676) was an influential English barrister, judge and jurist most noted for his treatise ''Historia Placitorum Coronæ'', or ''The History of the Pleas of the Crown''. Born to a barrister and ... (1609–76). It was later the home of Lord (Jack) and Lady (Frances) Donaldson. References External linksTresham village website [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horsehay Sand Formation
The Horsehay Sand Formation is a geological formation in England. Part of the Great Oolite Group, it was deposited in the Bajocian to Bathonian stages of the Middle Jurassic The Middle Jurassic is the second Epoch (geology), epoch of the Jurassic Period (geology), Period. It lasted from about 174.1 to 161.5 million years ago. Fossils of land-dwelling animals, such as dinosaurs, from the Middle Jurassic are relativel ..., the lithology consists of weakly cemented sand and sandstone, with thin interbeds of mudstone and siltstone. Rootlets and lignitic debris are common. It is the lateral equivalent of the Chipping Norton Limestone and the lower part of the Rutland Formation References Jurassic England Rock formations of England Geologic formations of the United Kingdom Jurassic System of Europe Bathonian Stage {{England-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
