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Booser Doppelmaar
The Booser Doppelmaar ("Double Maar of Boos") comprises two maars that have silted up and, today, form shallow depressions in the countryside. They lie on the territory of the village of Boos (in the collective municipality of Vordereifel), a few hundred metres west of the village itself. The two maars were formed 10,150 to 14,160 years ago and belong to the Quaternary volcano field of the Volcanic Eifel.Volcanic Eifel in the sense of a natural historical space or a region, not in the sense of a natural regional unit. From a natural region perspective it lies in the south of the Hohe Acht Upland (which belongs to the natural regional major unit of the Eastern High Eifel), ca. 7.8 km south (more precisely half west-by-south or 185.625º) of the summit of the Hohe Acht. The maars The two maars form large, circular basins surrounded by tuff embankments that lie on a line running west-southwest to east-northeast and thus follow the Variscan strike of the terrain. The west ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Basalt
Basalt (; ) is an aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the surface of a rocky planet or moon. More than 90% of all volcanic rock on Earth is basalt. Rapid-cooling, fine-grained basalt is chemically equivalent to slow-cooling, coarse-grained gabbro. The eruption of basalt lava is observed by geologists at about 20 volcanoes per year. Basalt is also an important rock type on other planetary bodies in the Solar System. For example, the bulk of the plains of Venus, which cover ~80% of the surface, are basaltic; the lunar maria are plains of flood-basaltic lava flows; and basalt is a common rock on the surface of Mars. Molten basalt lava has a low viscosity due to its relatively low silica content (between 45% and 52%), resulting in rapidly moving lava flows that can spread over great areas before cooling and solidifying. Flood basalts are thick sequence ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcano Park, Mayen-Koblenz
The Volcano Park in Mayen-Koblenz (german: Vulkanpark) is a geopark in the rural district of Mayen-Koblenz in the eastern Vulkan Eifel, Germany. It was founded in 1996 and wraps around the Laacher See (between Brohl-Lützing, Andernach, Plaidt, Mendig and Mayen). Together with the Volcano Park, Brohltal/Laacher See and the Vulkan Eifel Nature and Geo-Park, it forms part of the national Eifel Volcano Land Geo-Park (''Geopark Vulkanland Eifel''). The three parks are connected by the 280-kilometre-long German Volcano Route. The Volcano Park illustrates volcanism in the Eifel, how the present-day landscape developed, and the exploitation of basalt, pumice and tuff since Roman times. It incorporates exhibits on volcanology, archaeology and industrial history, with educational trails and information signs. The museum incorporates a total of 25 stations, which can be combined in a single visit using four roads plus hiking and bicycle paths. On 10 July 2010, the Volcano Park was honoured ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eifel Tower, Boos
The Eifel (; lb, Äifel, ) is a low mountain range in western Germany and eastern Belgium. It occupies parts of southwestern North Rhine-Westphalia, northwestern Rhineland-Palatinate and the southern area of the German-speaking Community of Belgium. The Eifel is part of the Rhenish Massif; within its northern portions lies the Eifel National Park. Geography Location The Eifel lies between the cities of Aachen to the north, Trier to the south and Koblenz to the east. It descends in the northeast along a line from Aachen via Düren to Bonn into the Lower Rhine Bay. In the east and south it is bounded by the valleys of the Rhine and the Moselle. To the west it transitions in Belgium and Luxembourg into the geologically related Ardennes and the Luxembourg Ösling. In the north it is limited by the Jülich-Zülpicher Börde. Within Germany it lies within the states of Rhineland-Palatinate and North Rhine-Westphalia; in the Benelux the area of Eupen, St. Vith and Luxembourg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nature Reserves Of Germany
A ''Naturschutzgebiet'' (abbreviated NSG) is a category of protected area ( nature reserve) within Germany's Federal Nature Conservation Act (the ''Bundesnaturschutzgesetz'' or ''BNatSchG''). Although often translated as 'Nature Reserve' in English, the Federal Agency for Nature Conservation (BfN) refers to them as 'Nature Conservation Areas'. It meets the criteria of an IUCN Category IV Habitat and Species Management Area.https://www.bfn.de/fileadmin/MDB/documents/themen/gebietsschutz/IUCN_Kat_Schutzgeb_Richtl_web.pdf Document of the Federal Agency for Nature Conservation of Germany Points of law The use of the term ''Naturschutzgebiet'' or terms that could be confused with it for anything other than the legally protected areas is forbidden under this law. Signage Because legal restrictions are placed on activity within German nature reserves they have to be signed on the ground. Only by this means can e.g. walkers know that they are entering a nature reserve and may not e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhineland-Palatinate
Rhineland-Palatinate ( , ; german: link=no, Rheinland-Pfalz ; lb, Rheinland-Pfalz ; pfl, Rhoilond-Palz) is a western state of Germany. It covers and has about 4.05 million residents. It is the ninth largest and sixth most populous of the sixteen states. Mainz is the capital and largest city. Other cities are Ludwigshafen am Rhein, Koblenz, Trier, Kaiserslautern, Worms and Neuwied. It is bordered by North Rhine-Westphalia, Saarland, Baden-Württemberg and Hesse and by the countries France, Luxembourg and Belgium. Rhineland-Palatinate was established in 1946 after World War II, from parts of the former states of Prussia (part of its Rhineland and Nassau provinces), Hesse ( Rhenish Hesse) and Bavaria (its former outlying Palatinate kreis or district), by the French military administration in Allied-occupied Germany. Rhineland-Palatinate became part of the Federal Republic of Germany in 1949 and shared the country's only border with the Saar Protectorate until the latt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hectare
The hectare (; SI symbol: ha) is a non-SI metric unit of area equal to a square with 100- metre sides (1 hm2), or 10,000 m2, and is primarily used in the measurement of land. There are 100 hectares in one square kilometre. An acre is about and one hectare contains about . In 1795, when the metric system was introduced, the ''are'' was defined as 100 square metres, or one square decametre, and the hectare (" hecto-" + "are") was thus 100 ''ares'' or km2 (10,000 square metres). When the metric system was further rationalised in 1960, resulting in the International System of Units (), the ''are'' was not included as a recognised unit. The hectare, however, remains as a non-SI unit accepted for use with the SI and whose use is "expected to continue indefinitely". Though the dekare/decare daa (1,000 m2) and are (100 m2) are not officially "accepted for use", they are still used in some contexts. Description The hectare (), although not a unit of SI, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nitz, Germany
Nitz is an ''Ortsgemeinde'' – a municipality belonging to a ''Verbandsgemeinde'', a kind of collective municipality – in the Vulkaneifel district in Rhineland-Palatinate, Germany. It belongs to the ''Verbandsgemeinde'' of Kelberg, whose seat is in the like-named municipality. Geography Location The municipality lies in the Vulkaneifel, a part of the Eifel known for its volcanic history, geographical and geological features, and even ongoing activity today, including gases that sometimes well up from the earth. Nitz lies on the Nitzbach, a tributary to the river Nette. Some to the northwest are found the Nürburgring and the Hohe Acht, at above sea level the Eifel's highest mountain. Neighbouring municipalities Nitz's neighbours are Drees, Baar, Lind and Kirsbach. History Nitz belonged in the Middle Ages to the County of Nürburg. In 1815, the village became Prussian and was administered by the ''Bürgermeisterei'' (“Mayoralty”) of Kelberg in the Adenau dist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cinder Cone
A cinder cone (or scoria cone) is a steep conical hill A conical hill (also cone or conical mountain) is a landform with a distinctly conical shape. It is usually isolated or rises above other surrounding foothills, and is often of volcanic origin. Conical hills or mountains occur in different shap ... of loose pyroclastic fragments, such as volcanic clinkers, volcanic ash, or scoria that has been built around a volcanic vent. The pyroclastic fragments are formed by explosive eruptions or lava fountains from a single, typically cylindrical, vent. As the gas-charged lava is blown violently into the air, it breaks into small fragments that solidify and fall as either cinders, clinkers, or scoria around the vent to form a cone that often is symmetrical; with slopes between 30 and 40°; and a nearly circular ground plan. Most cinder cones have a bowl-shaped Volcanic crater, crater at the summit. Mechanics of eruption Cinder cones range in size from tens to hundreds of meter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lava
Lava is molten or partially molten rock ( magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface. Lava may be erupted at a volcano or through a fracture in the crust, on land or underwater, usually at temperatures from . The volcanic rock resulting from subsequent cooling is also often called ''lava''. A lava flow is an outpouring of lava during an effusive eruption. (An explosive eruption, by contrast, produces a mixture of volcanic ash and other fragments called tephra, not lava flows.) The viscosity of most lava is about that of ketchup, roughly 10,000 to 100,000 times that of water. Even so, lava can flow great distances before cooling causes it to solidify, because lava exposed to air quickly develops a solid crust that insulates the remaining liquid lava, helping to keep it hot and inviscid enough to continue flowing. The word ''lava'' comes from Italian and is probably derived from the Latin word ''l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syenite
Syenite is a coarse-grained intrusive igneous rock with a general composition similar to that of granite, but deficient in quartz, which, if present at all, occurs in relatively small concentrations (< 5%). Some syenites contain larger proportions of components and smaller amounts of material than most granites; those are classed as being of intermediate composition. The extrusive equivalent of syenite is trachyte. Composition of syenites The[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wehrlite
Wehrlite is an ultramafic and ultrabasic rock that is a mixture of olivine and clinopyroxene. It is a subdivision of the peridotites. The nomenclature allows up to a few percent of orthopyroxene. Accessory minerals include ilmenite, chromite, magnetite and an aluminium-bearing mineral (plagioclase, spinel or garnet). Wehrlites occur as mantle xenoliths and in ophiolites. Another occurrence is as cumulate in gabbro and norite layered intrusions. Some meteorites can also be classified as wehrlites (e.g. NWA 4797). Wehrlite is named after Alois Wehrle. He was born 1791 in Kroměříž, Czech Republic (then Kremsier in Mähren) and was a professor at the "Ungarische Bergakademie" (Hungarian Mining School) in Banská Štiavnica, Slovakia (then Schemnitz, Kingdom of Hungary The Kingdom of Hungary was a monarchy in Central Europe that existed for nearly a millennium, from the Middle Ages into the 20th century. The Principality of Hungary emerged as a Christian kingdom upon t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
