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Döhlen Basin
The Döhlen Basin () is a landscape unit in the German federal state of Saxony, southwest of Dresden. The Döhlen Basin has a length of 22 km and a width of 6 km and lies within the district of Sächsische Schweiz-Osterzgebirge. Description In the centre of the basin is the large county town of Freital; although the basin is named after Döhlen, one of the villages in its borough. The highest point in the area is the Lerchenberg near Possendorf at 425 m above sea level (NN); the lowest point is in the river valley of the Weißeritz at 160 m above NN. The Karsdorf fault forms the geological boundary with the Eastern Ore Mountains to the south. The formation and sedimentation of the basin lasted from Upper Carboniferous to the Lower Permian and were tectonically affected by the adjacent NW-SE trending fault zone (the Elbe Valley zone). About half of the 800-metre-thick basin filling is made of pyroclastic rock. Of economic importance were the coal seams of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tectonically
Tectonics ( via Latin ) are the processes that result in the structure and properties of the Earth's crust and its evolution through time. The field of ''planetary tectonics'' extends the concept to other planets and moons. These processes include those of mountain-building, the growth and behavior of the strong, old cores of continents known as cratons, and the ways in which the relatively rigid plates that constitute the Earth's outer shell interact with each other. Principles of tectonics also provide a framework for understanding the earthquake and volcanic belts that directly affect much of the global population. Tectonic studies are important as guides for economic geologists searching for fossil fuels and ore deposits of metallic and nonmetallic resources. An understanding of tectonic principles can help geomorphologists to explain erosion patterns and other Earth-surface features. Main types of tectonic regime Extensional tectonics Extensional tectonics i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mining In Saxony
Mining is the extraction of valuable geological materials and minerals from the surface of the Earth. Mining is required to obtain most materials that cannot be grown through agricultural processes, or feasibly created artificially in a laboratory or factory. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, chalk, dimension stone, rock salt, potash, gravel, and clay. The ore must be a rock or mineral that contains valuable constituent, can be extracted or mined and sold for profit. Mining in a wider sense includes extraction of any non-renewable resource such as petroleum, natural gas, or even water. Modern mining processes involve prospecting for ore bodies, analysis of the profit potential of a proposed mine, extraction of the desired materials, and final reclamation or restoration of the land after the mine is closed. Mining materials are often obtained from ore bodies, lodes, veins, seams, reefs, or placer deposits. The exploitation of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geology Of Germany
The geology of Germany is heavily influenced by several phases of orogeny in the Paleozoic and the Cenozoic, by sedimentation in shelf seas and epicontinental seas and on plains in the Permian and Mesozoic as well as by the Quaternary glaciations. Regional geological setting Germany is located between the geologically very old (Precambrian) East European Craton (Baltica) to the north and north-east (that further north is exposed as the Baltic Shield), and the geologically young (Cenozoic) Alpine-Carpathian Orogen to the south. The corresponding crustal provinces of Germany are thus geologically "middle-aged" and were accreted onto the East European Craton during the Paleozoic through plate tectonic processes. These areas form the geological basement of Germany. The basement is the oldest of the four geological crustal levels (''German: '') that overlap in Central Europe, north of the Alps. The levels mainly reflect the age relationships of rocks and the great tectonic t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Basins Of Germany
Basin may refer to: Geography and geology * Depression (geology) ** Back-arc basin, a submarine feature associated with island arcs and subduction zones ** Debris basin, designed to prevent damage from debris flow ** Drainage basin (hydrology), a topographic region in which all water drains to a common area ** Endorheic basin, a closed topographic low area with no drainage outlet ** Impact basin, a large impact crater ** Retention basin, stormwater runoff to prevent flooding and downstream erosion which includes a permanent pool of water ** Detention basin, a man-made basin used to temporarily store surplus water from rivers. ** Sedimentary basin (sedimentology), a low and usually sinking region that is filled with sediments from adjacent higher areas ** Structural basin, rock strata formed by tectonic warping of previously flat-lying strata *** Oceanic basin, a structural basin covered by seawater *** Pull-apart basin, a section of crust separated by the action of two strik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sächsisches Oberbergamt
The Saxon Mining Office () is the executive authority for mining rights in the German state of Saxony. It is also responsible for all non-metallic mineral resources on the terrain of the former East Germany. History Based on discoveries of silver in 1168, Freiberg developed into the centre of Ore Mountains and Saxon ore mining. A mining office (''Bergamt'') and master miner (''Bergmeister'') were mentioned here in 1241. Freiberg mining law ('' Bergrecht''), first laid down in writing in 1307, was subsequently adopted in many other European mining regions. In 1470 rich silver finds in the Ore Mountains (at Schneeberg Annaberg-Buchholz and Marienberg) resulted in a new (the second) '' Berggeschrey''(silver rush). The mining industry expanded rapidly, and in the wake of this growth a single mining administration was gradually set up in Ernestine and Albertine Wettins, Albertine Saxony during the early 16th century. The Annaberg mining regulations (''Bergordnung'') enacted in 15 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
