|
Tornquist Zone
The Trans-European Suture Zone (TESZ), also known as the Tornquist Zone, is the crustal boundary between the Precambrian East European Craton and the Phanerozoic orogens of South-Western Europe. The zone runs from the North Sea to the Black Sea. The north-western part of the zone was created by the collision of Avalonia and Baltica/ East European Craton in the Late Ordovician. The south-eastern part of the zone, now largely concealed by deep sedimentary basins, developed through Variscan and Alpine orogenic events. Various branches of the TESZ go under different names: * The Teisseyre-Tornquist Zone (TTZ) in Ukraine and Poland. * The Sorgenfrei-Tornquist Zone (STZ) through Scania (Sweden), Kattegat, and North Jutland (Denmark). * The Trans-European Fault (TEF), Thor-Tornquist Suture or Thor Suture through southern Denmark. The latter two branches (STZ and TEF) span a triangular area of numerous faults, called the Tornquist Fan. Discovery In 1893 the Polish geologist Wawr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trans-European Suture Zone
The Trans-European Suture Zone (TESZ), also known as the Tornquist Zone, is the crustal boundary between the Precambrian East European Craton and the Phanerozoic orogens of South-Western Europe. The zone runs from the North Sea to the Black Sea. The north-western part of the zone was created by the collision of Avalonia and Baltica/ East European Craton in the Late Ordovician. The south-eastern part of the zone, now largely concealed by deep sedimentary basins, developed through Variscan and Alpine orogenic events. Various branches of the TESZ go under different names: * The Teisseyre-Tornquist Zone (TTZ) in Ukraine and Poland. * The Sorgenfrei-Tornquist Zone (STZ) through Scania (Sweden), Kattegat, and North Jutland (Denmark). * The Trans-European Fault (TEF), Thor-Tornquist Suture or Thor Suture through southern Denmark. The latter two branches (STZ and TEF) span a triangular area of numerous faults, called the Tornquist Fan. Discovery In 1893 the Polish geologist Wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Journal Of Earth Sciences
''International Journal of Earth Sciences '' is a peer-reviewed scientific journal published monthly by Springer Science+Business Media. It covers original and review papers on the history of earth and is an international Geoscience journal. Subject areas covered in the journal include: dynamics of the lithosphere, tectonics and volcanology, sedimentology, evolution of life, marine and continental ecosystems, global dynamics of physicochemical cycles, mineral deposits and hydrocarbons, and surface processes. History The journal was founded in 1910 as ''Geologische Rundschau'' and was renamed in 1999. Impact factor The journal has an impact factor of 2.7 (2021). Editor The editor in chief An editor-in-chief (EIC), also known as lead editor or chief editor, is a publication's editorial leader who has final responsibility for its operations and policies. The editor-in-chief heads all departments of the organization and is held account ... is Ulrich Riller (Universität Hamburg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Skåne Volcanic Province
The Central Skåne Volcanic Province was a site of volcanic activity in the Scania region of Sweden during the Mesozoic Era of the Earth's geological history. The volcanism began with a first and main phase in late Sinemurian to Toarcian times around 191 to 178 Ma. Then volcanism continued sporadically for another 80 million years. More than one hundred volcanic necks of basaltic composition exist in Scania evidencing this volcanism. In central Scania, volcanism was in the form of a volcanic field of cinder cones that had Strombolian eruption styles. These cones produced tuffite deposits made largely of lapilli with rare volcanic bombs. Pyroclastic materials were subsequently palagonitized or largely altered to clay minerals. While eruptions occurred on land the sea was likely very close to the area. Besides purely pyroclastic sediments, lahar deposits have also been identified around the remnants of the volcanoes. Beneath a lahar deposit at Korsaröd ( Djupadal Formation), Ear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monogenetic Volcano
A monogenetic volcanic field is a type of volcanic field consisting of a group of small monogenetic volcanoes, each of which erupts only once, as opposed to polygenetic volcanoes, which erupt repeatedly over a period of time. The small monogenetic volcanoes of these fields are the most common subaerial volcanic landform. Many monogenetic volcanoes are cinder cones, often with lava flows, such as Parícutin in the Michoacán-Guanajuato volcanic field, which erupted from 1943 to 1952. Some monogenetic volcanoes are small lava shields, such as Rangitoto Island in the Auckland volcanic field. Other monogenetic volcanoes are tuff rings or maars. A monogenetic field typically contains between ten and a hundred volcanoes. The Michoacán-Guanajuato field in Mexico contains more than a thousand volcanoes and is exceptionally large. Monogenetic fields occur only where the magma supply to the volcano is low or where vents are not close enough or large enough to develop plumbing systems fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extensional Tectonics
Extensional tectonics is concerned with the structures formed by, and the Tectonics, tectonic processes associated with, the stretching of a planetary body's Crust (geology), crust or lithosphere. Deformation styles The types of structure and the geometries formed depend on the amount of stretching involved. Stretching is generally measured using the parameter ''β'', known as the ''beta factor'', where : \beta = \frac \,, ''t''0 is the initial crustal thickness and ''t''1 is the final crustal thickness. It is also the equivalent of the Strain (materials science), strain parameter ''stretch''. Low beta factor In areas of relatively low crustal stretching, the dominant structures are high to moderate angle normal faults, with associated half grabens and tilted block faulting, tilted fault blocks. High beta factor In areas of high crustal stretching, individual extensional faults may become rotated to too low a dip to remain active and a new set of faults may be generated. Lar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Söderåsen
Söderåsen is a northwest–southwest elongated bedrock ridge in Scania in southern Sweden. On Söderåsen is Scania's highest point at above sea level. It is intersected by several fissure valleys. The ridge extends from Röstånga in the southeast to the Åstorp in northwest. Söderåsen National Park is located east of Helsingborg in Scania. Geography In Swedish the word ''ås'' commonly refer to eskers, a glacial landform, but in the case of Söderåsen it corresponds to a tectonic landform called horst in the Sorgenfrei-Tornquist Zone. The last glacial ice sheet, the Weichsel ice, left the area of Söderåsen 14,000 to 13,500 years BP. Following this there was a period up to 12,700 years BP of cold non-glacial conditions with permafrost and strong winds. Kopparhatten On Söderåsen is the viewpoint Kopparhatten at a height of . It is the highest point in Söderåsens national park. This part of the hill has a particularly dramatic landscape, with up to deep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linderödsåsen
The Linderödsåsen is a ridge, geologically a '' horst,'' in the province of Skåne in southernmost Sweden. It lies at the edge of the Baltic shield, in the Tornquist Zone, and continues with the Hallandsås in north western direction towards the Kattegat.Swedish University of Agricultural SciencesBedrocks in Sweden/ref> It stretches through Skåne from northwest to southeast. On the map it is situated in the middle of the province. It continues south-east down to the shore, mostly consisting of rocks, and ends with the notable steep Stenshuvud steep at . In its central parts, around Höör Municipality, the ridge has a height of 100–120 meters. The average width is 15-30 kilometers. Its highest point is at 196 meters. Administratively, it used to mark the border between Malmöhus County and Kristianstad County (united in 1999 as Skåne County). Although a region of natural beauty and rich with wildlife, the Linderödsåsen is currently threatened by the quasi-industri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skagen
Skagen () is the northernmost town in Denmark, on the east coast of the Skagen Odde peninsula in the far north of Jutland, part of Frederikshavn Municipality in North Denmark Region, Nordjylland, north of Frederikshavn and northeast of Aalborg. The Port of Skagen is Denmark's main fishing port and it also has a thriving tourist industry, attracting 2 million people annually. The name was applied originally to the peninsula but it now also refers to the town. The settlement began during the Middle Ages as a fishing village, renowned for its herring industry. Thanks to its seascapes, fishermen and evening light, towards the end of the 19th century it became popular with a group of impressionism, impressionist artists now known as the Skagen Painters. In 1879, the Skagen Fishermen's Association was established with the purpose of facilitating the local fishing industry through the Skagensbanen railway, which opened as a narrow-gauged railway in 1890. The modern port of Skag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caledonides
The Caledonian orogeny was a mountain-building cycle recorded in the northern parts of the British Isles, the Scandinavian Caledonides, Svalbard, eastern Greenland and parts of north-central Europe. The Caledonian orogeny encompasses events that occurred from the Ordovician to Early Devonian, roughly 490–390 million years ago ( Ma). It was caused by the closure of the Iapetus Ocean when the Laurentia and Baltica continents and the Avalonia microcontinent collided. The orogeny is named for Caledonia, the Latin name for Scotland. The term was first used in 1885 by Austrian geologist Eduard Suess for an episode of mountain building in northern Europe that predated the Devonian period. Geologists like Émile Haug and Hans Stille saw the Caledonian event as one of several episodic phases of mountain building that had occurred during Earth's history.McKerrow ''et al.'' (2002) Current understanding has it that the Caledonian orogeny encompasses a number of tectonic phases tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scandinavian Caledonides
The Scandinavian Caledonides are the vestiges of an ancient, today deeply eroded orogenic belt formed during the Silurian–Devonian continental collision of Baltica and Laurentia, which is referred to as the Scandian phase of the Caledonian orogeny. The size of the Scandinavian Caledonides at the time of their formation can be compared with the size of the Himalayas. The area east of the Scandinavian Caledonides, including parts of Finland, developed into a foreland basin where old rocks and surfaces were covered by sediments. Today, the Scandinavian Caledonides underlie most of the western and northern Scandinavian Peninsula, whereas other parts of the Caledonides can be traced into West and Central Europe as well as parts of Greenland and eastern North America. Plate-tectonic history The Caledonian Wilson cycle commenced with the continental break-up of Rodinia and the opening of the Iapetus ocean about 616–583 Ma (mega-annum) ago. The Iapetus was at its widest in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iapetus Suture
The Iapetus Suture is one of several major Fault (geology), geological faults caused by the collision of several ancient land masses forming a suture (geology), suture. It represents in part the remains of what was once the Iapetus Ocean. Iapetus was the father of Atlas (mythology), Atlas in Greek mythology, making his an appropriate name for what used to be called the 'Proto-Atlantic Ocean'. When the Atlantic Ocean opened, in the Cretaceous period, it took a slightly different line from that of the Iapetus suture, with some originally Laurentian rocks being left behind in north-west Europe and other, Avalonian, rocks remaining as part of Newfoundland. Background The Iapetus Ocean was an ancient ocean which existed in the Southern Hemisphere approximately 600 million years ago and was bordered by several paleocontinents: Laurentia, Ganderia, Carolinia, Avalonia, and Baltica. During a series of geological events, the Salinic orogeny and Caledonian progeny, all three land masses ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Tornquist
Alexander Tornquist (18 June 1868 in Hamburg – 1 November 1944, Graz) was a German-Austrian geologist, who is known for his work on the northern part of the Trans European Suture Zone and on Mediterranean geology. Biography Alexander Tornquist was son of the merchant Alexander Heinrich Tornquist and Minna Mathilde Tornquist, née Fett. He studied at the universities of Freiburg, Munich and Göttingen. In 1892 he received a PhD in geology and paleontology at the university of Göttingen. In 1901 he obtained an associate professorship for geology and paleontology at Strasbourg, and in 1907 became a full professor at Königsberg. In Königsberg he also served as director of the famous Prussian amber collection and of the institute of seismology. He spent his later life in Graz, where he had a professorship at the Technische Hochschule from 1914 onward. From 1915 to 1918, he served as dean to the chemo-technical faculty. From 1924 to 1926, Tornquist was rector of the Technisch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
