|
Wenlock Group
The Wenlock Group (Wenlockian), in geology, is the middle series of strata in the Silurian (Upper Silurian) of Great Britain. This group in the typical area in the Welsh border counties contains the following formations: Much Wenlock Limestone Formation, 90–300 ft.; Wenlock Shale, up to 1900 ft.; Woolhope or Barr Limestone and shale, 150 ft. Stratigraphy Woolhope Beds The Woolhope Beds consist mainly of shales which are generally calcareous and pass frequently into irregular nodular and lenticular limestone. In the Malvern Hills there is much shale at the base, and in places the limestone may be absent. These beds are best developed in Herefordshire; they appear also at May Hill in Gloucestershire and in Radnorshire. Common fossils are ''Phacops caudatus'', ''Encrinurus tuberculatus'', '' Orthis calligramma'', ''Atrypa reticularis'', and ''Orthoceras annulatum''. Wenlock Shales The Wenlock Shales are pale or dark-grey shales which extend through Coalbrookdal ... [...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] |
Coalbrookdale
Coalbrookdale is a village in the Ironbridge Gorge in Shropshire, England, containing a settlement of great significance in the history of iron ore smelting. It lies within the civil parish called the Gorge. This is where iron ore was first smelted by Abraham Darby using easily mined "coking coal". The coal was drawn from drift mines in the sides of the valley. As it contained far fewer impurities than normal coal, the iron it produced was of a superior quality. Along with many other industrial developments that were going on in other parts of the country, this discovery was a major factor in the growing industrialisation of Britain, which was to become known as the Industrial Revolution. Today, Coalbrookdale is home to the Ironbridge Institute, a partnership between the University of Birmingham and the Ironbridge Gorge Museum Trust offering postgraduate and professional development courses in heritage. Before Abraham Darby Before the Dissolution of the Monasteries, Madeley ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Woolhope
Woolhope is a village and civil parish in the English county of Herefordshire. The population of the civil parish was 486 at the 2011 census. The civil parish includes the hamlet of Broadmoor Common to the west of the village (and a nature reserve of the same name), and a locale known as The Nurdens also known as Upper Woolhope to its northeast. Location Woolhope is located about 7 miles east of Hereford, sat atop the 'Woolhope Dome', a region of particular geological interest; and near Haugh Wood, a Site of Special Scientific Interest due to its varied flora and fauna. History The manor of Woolhope in Herefordshire, along with three others, was given to the cathedral at Hereford before the Norman Conquest by the benefactresses Wulviva and (Lady) Godiva, local Anglo-Saxon landowners before the Norman takeover of the region. The church has a 20th-century stained-glass window showing them. Origin of the name The name of the village comes from Wulviva's Hope (Wulviva's Vall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ludlow
Ludlow () is a market town in Shropshire, England. The town is significant in the history of the Welsh Marches and in relation to Wales. It is located south of Shrewsbury and north of Hereford, on the A49 road which bypasses the town. The town is near the confluence of the rivers Corve and Teme. The oldest part is the medieval walled town, founded in the late 11th century after the Norman conquest of England. It is centred on a small hill which lies on the eastern bank of a bend of the River Teme. Situated on this hill are Ludlow Castle and the parish church, St Laurence's, the largest in the county. From there the streets slope downward to the rivers Corve and Teme, to the north and south respectively. The town is in a sheltered spot beneath Mortimer Forest and the Clee Hills, which are clearly visible from the town. Ludlow has nearly 500 listed buildings, including examples of medieval and Tudor-style half-timbered buildings. The town was described by Sir John Betjeman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aymestrey
Aymestrey ( ) is a village and civil parish in north-western Herefordshire, England. The population of this civil parish, including the hamlet of Yatton, at the 2011 Census was 351. Location It is located on the A4110 road, about 7 miles north-west of Leominster and 8 miles south-west of the historic market town of Ludlow, in south Shropshire. The village is on the River Lugg. Amenities and history Aymestrey is home to several homes and cottages, the church dedicated to St John the Baptist and St Alkmund, a village hall and a pub or Inn: The Riverside Inn, situated next to River Lugg just off the main road. The Mortimer Trail ''geograph.org.uk'' waymarked recreational walk passes through the village. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dudley
Dudley is a large market town and administrative centre in the county of West Midlands, England, southeast of Wolverhampton and northwest of Birmingham. Historically an exclave of Worcestershire, the town is the administrative centre of the Metropolitan Borough of Dudley; in 2011 it had a population of 79,379. The Metropolitan Borough, which includes the towns of Stourbridge and Halesowen, had a population of 312,900. In 2014 the borough council named Dudley as the capital of the Black Country. Originally a market town, Dudley was one of the birthplaces of the Industrial Revolution and grew into an industrial centre in the 19th century with its iron, coal, and limestone industries before their decline and the relocation of its commercial centre to the nearby Merry Hill Shopping Centre in the 1980s. Tourist attractions include Dudley Zoo and Castle, the 12th century priory ruins, and the Black Country Living Museum. History Early history Dudley has a history dating back ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anticline
In structural geology, an anticline is a type of fold that is an arch-like shape and has its oldest beds at its core, whereas a syncline is the inverse of an anticline. A typical anticline is convex up in which the hinge or crest is the location where the curvature is greatest, and the limbs are the sides of the fold that dip away from the hinge. Anticlines can be recognized and differentiated from antiforms by a sequence of rock layers that become progressively older toward the center of the fold. Therefore, if age relationships between various rock strata are unknown, the term antiform should be used. The progressing age of the rock strata towards the core and uplifted center, are the trademark indications for evidence of anticlines on a geologic map. These formations occur because anticlinal ridges typically develop above thrust faults during crustal deformations. The uplifted core of the fold causes compression of strata that preferentially erodes to a deeper st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wenlock Edge
Wenlock Edge is a limestone escarpment near Much Wenlock, Shropshire, England and a site of special scientific interest because of its geology. It is over long, running southwest to northeast between Craven Arms and Much Wenlock, and is roughly 1,083 feet above sea level. The deciduous woodland which runs along it covers much of the steep slopes of the escarpment and in parts it is very well preserved. It was featured on the 2005 TV programme ''Seven Natural Wonders'' as one of the wonders of the Midlands. Wenlock Edge contains many interesting features such as Flounders' Folly, Wilderhope Manor and Shipton Hall and waymarked walks such as the Shropshire Way and bridleways such as the Jack Mytton Way. It is a popular area for hillwalking, cycling, mountain biking and horseriding and is also frequented by tourists and sightseers. Robert Hart created a model forest garden from a small orchard on his farm called Highwood Hill in Wenlock Edge. Geology The "world famous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Concretion
A concretion is a hard, compact mass of matter formed by the precipitation of mineral cement within the spaces between particles, and is found in sedimentary rock or soil. Concretions are often ovoid or spherical in shape, although irregular shapes also occur. The word 'concretion' is derived from the Latin "(act of) compacting, condensing, congealing, uniting", itself from ''con'' meaning 'together' and ''crescere'' meaning "to grow". Concretions form within layers of sedimentary strata that have already been deposited. They usually form early in the burial history of the sediment, before the rest of the sediment is hardened into rock. This concretionary cement often makes the concretion harder and more resistant to weathering than the host stratum. There is an important distinction to draw between concretions and nodules. Concretions are formed from mineral precipitation around some kind of nucleus while a nodule is a replacement body. Descriptions dating from the 18th ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gertrude Elles
Gertrude Lilian Elles MBE (8 October 1872 – 18 November 1960) was a British geologist, known for her work on graptolites. Personal life Gertrude Elles was born on October 8, 1872. She was the youngest of six children. Every year the Elles family would travel to the Morenish Estate near Killen to hunt. The young Gertrude fell in love with Scotland, especially the Highlands, during these family vacations. Elles' love for geology evolved through exploration of the outdoors, museum visits, and fieldtrips. Her first introduction to a formal education in geology were classes she took in 1887 at Wimbledon High School which she attended. Dr. Elles' adult life is marked by her dedication to the contribution of knowledge to the field of Geology. She was a trailblazer for women in field and an influential model for young female researchers. Her work accrued international acclaim in her lifetime and beyond it. Dr. Elles remained unmarried but maintained a connection to her family and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graptolite
Graptolites are a group of colonial animals, members of the subclass Graptolithina within the class Pterobranchia. These filter-feeding Filter feeders are a sub-group of suspension feeding animals that feed by straining suspended matter and food particles from water, typically by passing the water over a specialized filtering structure. Some animals that use this method of feedin ... organisms are known chiefly from fossils found from the Middle Cambrian (Miaolingian, Wuliuan) through the Lower Carboniferous (Mississippian (geology), Mississippian). A possible early graptolite, ''Chaunograptus'', is known from the Middle Cambrian. Recent analyses have favored the idea that the living pterobranch ''Rhabdopleura'' represents an extant graptolite which diverged from the rest of the group in the Cambrian. Fossil graptolites and ''Rhabdopleura'' share a colony structure of interconnected zooids housed in organic tubes (theca) which have a basic structure of stacked half-rings (fuse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coral
Corals are marine invertebrates within the class Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. Coral species include the important reef builders that inhabit tropical oceans and secrete calcium carbonate to form a hard skeleton. A coral "group" is a colony of very many genetically identical polyps. Each polyp is a sac-like animal typically only a few millimeters in diameter and a few centimeters in height. A set of tentacles surround a central mouth opening. Each polyp excretes an exoskeleton near the base. Over many generations, the colony thus creates a skeleton characteristic of the species which can measure up to several meters in size. Individual colonies grow by asexual reproduction of polyps. Corals also breed sexually by spawning: polyps of the same species release gametes simultaneously overnight, often around a full moon. Fertilized eggs form planulae, a mobile early form of the coral polyp which, when m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
