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Eger Graben
The Eger Graben (much less commonly called the Ohre or Ohře Graben; cs, Oherský rift, german: Egergraben) is a geological structure in the Czech Republic. It runs southwards, parallel to the Ore Mountains and its formation is linked with that of the mountain range. Topography The Ohře (equally commonly known in English by its German name ''Eger'', hence the name of the trough) flows through the Eger Graben and separates the Ore Mountains from the Slavkov Forest and the Doupov Mountains. The trench continues to the northeast along the valley of the Bílina and later, as the North Bohemian Basin, separates the Ore Mountains from the Bohemian Central Mountains, where the River Ohře leaves the graben and flows into the Elbe south of the Bohemian Mountains. Geology The Eger Graben is part of the European Cenozoic Rift System and was created geologically on the same principle as the Rhine Rift Valley. It was formed by the almost complete erosion of the Variscan Mountains ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eger Cheb
Eger ( , ; ; also known by other alternative names) is the county seat of Heves County, and the second largest city in Northern Hungary (after Miskolc). A city with county rights. Eger is best known for its castle, thermal baths, baroque buildings, the northernmost Ottoman minaret, dishes and red wines. Its population of around 53,000 makes it the 19th largest centre of population in Hungary according to the census. The town is located on the Eger Stream, on the hills of the Bükk Mountains. Names and etymology The origin of its name is still unknown. One suggestion is that the place was named after the alder ( in Hungarian) which grew so abundantly along the banks of the Eger Stream. This explanation seems to be correct because the name of the town reflects its ancient natural environment, and also one of its most typical plants, the alder, large areas of which could be found everywhere on the marshy banks of the Stream although they have since disappeared. The German name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Bohemian Basin
The Most Basin (also known as North Bohemian Basin; cs, Mostecká pánev, german: Nordböhmisches Becken) is a tectonic depression and geomorphological mesoregion of the Czech Republic. It is named after the city of Most. It forms the southwestern and central parts of the Ústí nad Labem Region. It is among the richest European deposits of lignite, which has been extracted here since the second half of 19th century, mostly by extensive surface mining. Geomorphology The Most Basin is a mesoregion of the Podkrušnohorská Macroregion within the Bohemian Massif. It is further subdivided into the microregions of Žatec Basin and Chomutov-Teplice Basin. A flat landscape without peaks is typical for the Most Basin. The highest point of the territory is a contour line near Libouchec, at above sea level. There are several low hills with an elevation of 350–380 in the southwestern part of the basin. Adjacent landscapes The basin lies between the Central and Eastern Ore Mountains ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fault-block Mountains
Fault blocks are very large blocks of rock, sometimes hundreds of kilometres in extent, created by tectonic and localized stresses in Earth's crust. Large areas of bedrock are broken up into blocks by faults. Blocks are characterized by relatively uniform lithology. The largest of these fault blocks are called crustal blocks. Large crustal blocks broken off from tectonic plates are called terranes. Those terranes which are the full thickness of the lithosphere are called microplates. Continent-sized blocks are called variously ''microcontinents, continental ribbons, H-blocks, extensional allochthons and outer highs.'' Because most stresses relate to the tectonic activity of moving plates, most motion between blocks is horizontal, that is parallel to the Earth's crust by strike-slip faults. However vertical movement of blocks produces much more dramatic results. Landforms (mountains, hills, ridges, lakes, valleys, etc.) are sometimes formed when the faults have a large v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Africa
Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area and 20% of its land area.Sayre, April Pulley (1999), ''Africa'', Twenty-First Century Books. . With billion people as of , it accounts for about of the world's human population. Africa's population is the youngest amongst all the continents; the median age in 2012 was 19.7, when the worldwide median age was 30.4. Despite a wide range of natural resources, Africa is the least wealthy continent per capita and second-least wealthy by total wealth, behind Oceania. Scholars have attributed this to different factors including geography, climate, tribalism, colonialism, the Cold War, neocolonialism, lack of democracy, and corruption. Despite this low concentration of wealth, recent economic expansion and the large and young population make Afr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fault-block
Fault blocks are very large blocks of rock, sometimes hundreds of kilometres in extent, created by tectonic and localized stresses in Earth's crust. Large areas of bedrock are broken up into blocks by faults. Blocks are characterized by relatively uniform lithology. The largest of these fault blocks are called crustal blocks. Large crustal blocks broken off from tectonic plates are called terranes. Those terranes which are the full thickness of the lithosphere are called microplates. Continent-sized blocks are called variously ''microcontinents, continental ribbons, H-blocks, extensional allochthons and outer highs.'' Because most stresses relate to the tectonic activity of moving plates, most motion between blocks is horizontal, that is parallel to the Earth's crust by strike-slip faults. However vertical movement of blocks produces much more dramatic results. Landforms (mountains, hills, ridges, lakes, valleys, etc.) are sometimes formed when the faults have a large ver ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variscan Orogeny
The Variscan or Hercynian orogeny was a geologic mountain-building event caused by Late Paleozoic continental collision between Euramerica (Laurussia) and Gondwana to form the supercontinent of Pangaea. Nomenclature The name ''Variscan'', comes from the Medieval Latin name for the district '' Variscia'', the home of a Germanic tribe, the Varisci; Eduard Suess, professor of geology at the University of Vienna, coined the term in 1880. (Variscite, a rare green mineral first discovered in the Vogtland district of Saxony in Germany, which is in the Variscan belt, has the same etymology.) ''Hercynian'', on the other hand, derives from the Hercynian Forest. Both words were descriptive terms of strike directions observed by geologists in the field, ''variscan'' for southwest to northeast, ''hercynian'' for northwest to southeast. The ''variscan'' direction reflected the direction of ancient fold belts cropping out throughout Germany and adjacent countries and the meaning shifted from d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhine Rift Valley
The Upper Rhine Plain, Rhine Rift Valley or Upper Rhine Graben (German: ''Oberrheinische Tiefebene'', ''Oberrheinisches Tiefland'' or ''Oberrheingraben'', French: ''Vallée du Rhin'') is a major rift, about and on average , between Basel in the south and the cities of Frankfurt/Wiesbaden in the north. Its southern section straddles the France–Germany border. It forms part of the European Cenozoic Rift System, which extends across Central Europe. The Upper Rhine Graben formed during the Oligocene, as a response to the evolution of the Alps to the south. It remains active to the present day. Today, the Rhine Rift Valley forms a downfaulted trough through which the river Rhine flows. Formation The Upper Rhine Plain was formed during the Early Cenozoic era, during the Late Eocene epoch. At this time, the Alpine Orogeny, the major mountain building event that was to produce the Alps, was in its early stages. The Alps were formed because the continents of Europe and Africa colli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Cenozoic Rift System
The European Cenozoic Rift System (ECRIS) is a long system of rifts formed in the foreland of the Alps as the lithosphere responded to the effects of the Alpine and Pyrenean orogenies. The system began to form during the Late Eocene and parts (particularly the Upper and Lower Rhine Grabens) remain seismically active today and are responsible for most of the larger earthquakes in Europe, north of the Alps. Extent The ECRIS consists of a series of rifts and associated transfer faults extending from the Mediterranean to the North Sea. Limagne Graben This north-south trending rift structure formed in the middle Eocene creating a lake that is now the Limagne plain. The main phase of subsidence continued until the Late Oligocene. The graben is controlled by faults on its western side and is filled with Cenozoic sediments up to 2 km thick. Bresse Graben The Bresse Graben lies to the east of the Limagne Graben. Rifting started during the Eocene, pausing from the Late Oligocene t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bohemian Central Mountains
Bohemian or Bohemians may refer to: *Anything of or relating to Bohemia Beer * National Bohemian, a brand brewed by Pabst * Bohemian, a brand of beer brewed by Molson Coors Culture and arts * Bohemianism, an unconventional lifestyle, originally practised by 19th–20th century European and American artists and writers. * Bohemian style, a fashion movement * ''La bohème'', an opera by Giacomo Puccini * Bohemian (band), South Korean pop group * Bohemian glass or crystal * Edie Brickell & New Bohemians, an alternative rock band formed in the 1980s Geography * Bohemian Massif, a mountainous region of central Czech Republic, eastern Germany, southern Poland and northern Austria Paintings * ''The Bohemian'' (Renoir painting), a painting by Pierre-Auguste Renoir completed in 1868 * ''The Bohemian (Bouguereau painting)'', a painting by William-Adolphe Bouguereau completed in 1890 Peoples * Bohemians, anyone from or residing in Bohemia * Bohemian Roma, a subgroup of the Romani p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bílina (river)
The Bílina (; german: Biela) rises on the slopes of the Ore Mountains in the Czech Republic, north of Chomutov. The river flows between the Czech Central Mountains and the Ore Mountains to the north-east, and empties into the Elbe in Ústí nad Labem. The catchment area of the river covers an area of 1,082 km², and its total length is 82.0 km. In the upper part it flows through a man-made riverbed which was created when lignite mining in the area around Most started. At the same time, the former Lake Komořany was drained. A substantial part of the flow was extracted for use in chemical plants in Záluží u Litvínova. The highly polluted output killed all fish. The situation improved significantly during the 1990s. The flow rate is currently artificially increased by redirection of water from the catchment area of the Ohře. However, the Bílina is still one of the most polluted rivers in the Czech Republic. For most of the river's length it flows through open, tre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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