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BIRPS Profiles
The British Institutions Reflection Profiling Syndicate, better known by its acronym BIRPS, was set up to acquire deep seismic reflection profiles around the United Kingdom Continental Shelf (UKCS). It was formed, initially as BURPS, the British Universities Reflection Profiling Syndicate, involving geophysicists from the Natural Environment Research Council (NERC) and British Universities. After the involvement of other institutions the name was changed to BIRPS and by February 1981 NERC had approved funding for a four-year programme. The next ten years saw the collection of 12,000 km of deep seismic profiles around the British Isles. By the time NERC stopped funding the program in 1997, more than 20,000 km of data had been acquired. Formation In the mid 1970s, the technique of reflection seismology, seismic reflection profiling, which had become a standard exploration tool in the hydrocarbon exploration, oil and gas industry, was first applied to investigate the struc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BIRPS Profiles
The British Institutions Reflection Profiling Syndicate, better known by its acronym BIRPS, was set up to acquire deep seismic reflection profiles around the United Kingdom Continental Shelf (UKCS). It was formed, initially as BURPS, the British Universities Reflection Profiling Syndicate, involving geophysicists from the Natural Environment Research Council (NERC) and British Universities. After the involvement of other institutions the name was changed to BIRPS and by February 1981 NERC had approved funding for a four-year programme. The next ten years saw the collection of 12,000 km of deep seismic profiles around the British Isles. By the time NERC stopped funding the program in 1997, more than 20,000 km of data had been acquired. Formation In the mid 1970s, the technique of reflection seismology, seismic reflection profiling, which had become a standard exploration tool in the hydrocarbon exploration, oil and gas industry, was first applied to investigate the struc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mohorovičić Discontinuity
The Mohorovičić discontinuity ( , ), usually referred to as the Moho discontinuity or the Moho, is the boundary between the Earth's crust and the mantle. It is defined by the distinct change in velocity of seismic waves as they pass through changing densities of rock. The Moho lies almost entirely within the lithosphere (the hard outer layer of the Earth, including the crust). Only beneath mid-ocean ridges does it define the lithosphere– asthenosphere boundary (the depth at which the mantle becomes significantly ductile). The Mohorovičić discontinuity is below the ocean floor, and beneath typical continental crusts, with an average of . Named after the pioneering Croatian seismologist Andrija Mohorovičić, the Moho separates both the oceanic crust and continental crust from the underlying mantle. The Mohorovičić discontinuity was first identified in 1909 by Mohorovičić, when he observed that seismograms from shallow-focus earthquakes had two sets of P-waves and S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Continental Collision
In geology, continental collision is a phenomenon of plate tectonics that occurs at convergent boundaries. Continental collision is a variation on the fundamental process of subduction, whereby the subduction zone is destroyed, mountains produced, and two continents sutured together. Continental collision is only known to occur on Earth. Continental collision is not an instantaneous event, but may take several tens of millions of years before the faulting and folding caused by collisions stops. The collision between India and Asia has been going on for about 50 million years already and shows no signs of abating. Collision between East and West Gondwana to form the East African Orogen took about 100 million years from beginning (610 Ma) to end (510 Ma). The collision between Gondwana and Laurasia to form Pangea occurred in a relatively brief interval, about 50 million years long. Subduction zone: the collision site The process begins as two conti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hartlepool
Hartlepool () is a seaside and port town in County Durham, England. It is the largest settlement and administrative centre of the Borough of Hartlepool. With an estimated population of 90,123, it is the second-largest settlement in County Durham. Hartlepool is locally administrated by Hartlepool Borough Council, a unitary authority which also administrates outlying villages of Seaton Carew, Greatham, Hart Village, Dalton Piercy and Elwick. Hartlepool was founded in the 7th century, around the monastery of Hartlepool Abbey. The village grew in the Middle Ages and its harbour served as the official port of the County Palatine of Durham. After a railway link from the north was established from the South Durham coal fields, an additional link from the south, in 1835, together with a new port, resulted in further expansion, with the new town of West Hartlepool. Industrialisation in northern England and the start of a shipbuilding industry in the later part of the 19t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montrose, Angus
Montrose ( , gd, Monadh Rois) is a town and former royal burgh in Angus, Scotland. Situated north of Dundee and south of Aberdeen, Montrose lies between the mouths of the North and South Esk rivers. It is the northernmost coastal town in Angus and developed as a natural harbour that traded in skins, hides, and cured salmon in medieval times. With a population of approximately 12,000, the town functions as a port, but the major employer is GlaxoSmithKline, which was saved from closure in 2006. The skyline of Montrose is dominated by the steeple of Old and St Andrew's Church, designed by James Gillespie Graham and built between 1832 and 1834. Montrose is a town with a wealth of architecture, and is a centre for international trade. It is an important commercial port for the oil and gas industry. It is known for its wide thoroughfare and high street, which leads to picturesque closes containing secluded gardens. The town has a view of a tidal lagoon, Montrose Basin, which is c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Glen Fault
The Great Glen Fault is a strike-slip fault that runs through the Great Glen in Scotland. The fault is mostly inactive today, but occasional moderate tremors have been recorded over the past 150 years. Location Aligned northeast to southwest, the Great Glen Fault extends further southwest in a straight line through Loch Linnhe and the Firth of Lorne, and then on into northwestern Ireland, directly through Lough Swilly, Donegal Bay and Clew Bay as the Leannan Fault. To the northeast the fault connects to the Walls Boundary Fault and the associated Melby Fault and Nestings Fault, before becoming obscured by the effects of Mesozoic rifting to the north of Shetland. The fault continues on the North American side of the North Atlantic Ocean, but is no longer part of a contiguous fault, as the complete fault was broken when the Mid-Atlantic Ridge formed 200 million years ago. The North American side of the fault runs through the length of northwestern Newfoundland, Canada, as the C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fault (geology)
In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements. Large faults within Earth's crust result from the action of plate tectonic forces, with the largest forming the boundaries between the plates, such as the megathrust faults of subduction zones or transform faults. Energy release associated with rapid movement on active faults is the cause of most earthquakes. Faults may also displace slowly, by aseismic creep. A ''fault plane'' is the plane that represents the fracture surface of a fault. A ''fault trace'' or ''fault line'' is a place where the fault can be seen or mapped on the surface. A fault trace is also the line commonly plotted on geologic maps to represent a fault. A ''fault zone'' is a cluster of parallel faults. However, the term is also used for the zone of crushed rock along a single fault. Prolonged motion along closely spaced faults can blur the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walls Boundary Fault
The Great Glen Fault is a strike-slip fault that runs through the Great Glen in Scotland. The fault is mostly inactive today, but occasional moderate tremors have been recorded over the past 150 years. Location Aligned northeast to southwest, the Great Glen Fault extends further southwest in a straight line through Loch Linnhe and the Firth of Lorne, and then on into northwestern Ireland, directly through Lough Swilly, Donegal Bay and Clew Bay as the Leannan Fault. To the northeast the fault connects to the Walls Boundary Fault and the associated Melby Fault and Nestings Fault, before becoming obscured by the effects of Mesozoic rifting to the north of Shetland. The fault continues on the North American side of the North Atlantic Ocean, but is no longer part of a contiguous fault, as the complete fault was broken when the Mid-Atlantic Ridge formed 200 million years ago. The North American side of the fault runs through the length of northwestern Newfoundland, Canada, as the C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shetland Islands
Shetland, also called the Shetland Islands and formerly Zetland, is a subarctic archipelago in Scotland lying between Orkney, the Faroe Islands and Norway. It is the northernmost region of the United Kingdom. The islands lie about to the northeast of Orkney, from mainland Scotland and west of Norway. They form part of the border between the Atlantic Ocean to the west and the North Sea to the east. Their total area is ,Shetland Islands Council (2012) p. 4 and the population totalled 22,920 in 2019. The islands comprise the Shetland constituency of the Scottish Parliament. The local authority, the Shetland Islands Council, is one of the 32 council areas of Scotland. The islands' administrative centre and only burgh is Lerwick, which has been the capital of Shetland since 1708, before which time the capital was Scalloway. The archipelago has an oceanic climate, complex geology, rugged coastline, and many low, rolling hills. The largest island, known as " the Mainland", ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halite
Halite (), commonly known as rock salt, is a type of salt, the mineral (natural) form of sodium chloride ( Na Cl). Halite forms isometric crystals. The mineral is typically colorless or white, but may also be light blue, dark blue, purple, pink, red, orange, yellow or gray depending on inclusion of other materials, impurities, and structural or isotopic abnormalities in the crystals. It commonly occurs with other evaporite deposit minerals such as several of the sulfates, halides, and borates. The name ''halite'' is derived from the Ancient Greek word for "salt", ἅλς (''háls''). Occurrence Halite dominantly occurs within sedimentary rocks where it has formed from the evaporation of seawater or salty lake water. Vast beds of sedimentary evaporite minerals, including halite, can result from the drying up of enclosed lakes and restricted seas. Such salt beds may be hundreds of meters thick and underlie broad areas. Halite occurs at the surface today in playas in regio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zechstein
The Zechstein (German either from ''mine stone'' or ''tough stone'') is a unit of sedimentary rock layers of Middle to Late Permian (Guadalupian to Lopingian) age located in the European Permian Basin which stretches from the east coast of England to northern Poland. The name Zechstein was formerly also used as a unit of time in the geologic timescale, but nowadays it is only used for the corresponding sedimentary deposits in Europe. The Zechstein lies on top of the Rotliegend; on top of the Zechstein is the Buntsandstein or Bunter. Formation The evaporite rocks of the Zechstein formation were laid down by the Zechstein Sea, an epicontinental or epeiric sea that existed in the Guadalupian and Lopingian epochs of the Permian period. The Zechstein Sea occupied the region of what is now the North Sea, plus lowland areas of Britain and the north European plain through Germany and Poland. The Zechstein sea lay in the rain shadow of the Central Pangean Mountains to the south. At times ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geophysical Company Of Norway
Geco (Geophysical Company of Norway) was a European geophysical service company specializing in seismic surveys for petroleum exploration. Starting operating in the North Sea from 1972, the company expanded to operate in most marine areas open for explorations, until Geco was incorporated into Geco-Prakla, with Schlumberger Limited as the solely owner from 1993. History The company started as Geoteam-Computas Ltd. A.S on December 13, 1972. The name was shortly afterwards changed to Geophysical Company of Norway, most commonly referred to as Geco. Anders Farestveit was the founder and the first CEO. The main focus was marine seismic surveys, including developing and equipping seismic vessels and conducting seismic surveys on customer requests. Geco was merged with the competing Norwegian geophysical company at that time, Statex (owned by Statoil and Kongsberg Våpenfabrikk) effective from January 1, 1978. Ownership after the merger was shared between Kongsberg Våpenfabrikk and Det ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
