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50-499: The community lies 285 to 598 m above sea level on the north slope of the Vogelsberg mountains. Through the community flows the river Felda, which empties into the Ohm at Gemünden . Feldatal borders in the north on the town of Romrod , in the northeast on the community of Schwalmtal , in the east on the community of Lautertal , in the south on the town of Ulrichstein , in the southwest on

100-772: A water gap may occur. In these, erosion from a stream occurs faster than mountain uplift, resulting in a gorge or valley that runs through a mountain range from low-lying country on one side to similar country on the other. Examples of such water gaps include the Manawatū Gorge in New Zealand and the Cumberland Narrows in Maryland . The removal of mass from a region will be isostatically compensated by crustal rebound. If we take into consideration typical crustal and mantle densities, erosion of an average 100 meters of rock across

150-514: A broad, uniform surface will cause the crust to isostatically rebound about 85 meters and will cause only a 15-meter loss of mean surface elevation. An example of isostatic uplift is post-glacial rebound following the melting of ice sheets . The Hudson Bay region of Canada, the Great Lakes of Canada and the United States, and Fennoscandia are currently undergoing gradual rebound as a result of

200-500: A more modest uplift over a large region. Perhaps the most extreme form of orogenic uplift is a continental-continental crustal collision. In this process, two continents are sutured together, and large mountain ranges are produced. The collision of the Indian and Eurasian plates is a good example of the extent to which orogenic uplift can reach. Heavy thrust faulting (of the Indian plate beneath

250-698: A raised bog and, in the southeast a number of waterbodies, the Vogelsberg Lakes ( Vogelsberger Seen ). The basaltic parts of the Lower Vogelsberg (350.1-350.5) range in height between 300 and 500 m, except on the western to southwestern fringes by the Wetterau where they descend below 200 m in places. Its boundary with the Büdingen Forest to the south, with the Landrücken to the southeast and with

300-463: A relatively small role, and high peak formation can be more attributed to tectonic processes. Direct measures of the elevation change of the land surface can only be used to estimate erosion or bedrock uplift rates when other controls (such as changes in mean surface elevation, volume of eroded material, timescales and lags of isostatic response, variations in crustal density) are known. In a few cases, tectonic uplift can be seen in coral islands . This

350-405: A result of volcanic activity , mainly basaltic lava and pyroclastic deposits were formed. During the course of this volcanicity, trachyte and phonolite were produced in the early stages, then alkali-olivine basalts were deposited, which alternated with tholeiites . These volcanic products overlaid a basement of bunter sandstone and tertiary sands, in small areas in the east also rocks of

400-562: A virgin-headed spreadeagle gules crowned azure, therein an inescutcheon argent a hammer and four nails azure. The inescutcheon (smaller inner shield, called a Herzschild or "heartshield" in German heraldry) refers to the dominant handicraft in the community, namely nailsmithing. This trade was practised even into the early 20th century. The virgin-headed spreadeagle ( Jungfrauenadler ) has its roots in Feldatal's mediaeval noble family's arms. Through

450-682: Is thrust onto continental crust. Basically nappes (thrust sheets) from each plate collide and begin to stack one on top of the other; evidence of this process can be seen in preserved ophiolitic nappes (preserved in the Himalayas ) and in rocks with an inverted metamorphic gradient . The preserved inverted metamorphic gradient indicates that nappes were actually stacked on top of each other so quickly that hot rocks did not have time to equilibrate before being thrust on top of cool rocks. The process of nappe stacking can only continue for so long, as gravity will eventually disallow further vertical growth (there

500-478: Is an upper limit to vertical mountain growth). Although the raised surfaces of mountain ranges mainly result from crustal thickening, there are other forces at play that are responsible for the tectonic activity. All tectonic processes are driven by gravitational force when density differences are present. A good example of this would be the large-scale circulation of the Earth's mantle . Lateral density variations near

550-651: Is evidenced by the presence of various oceanic islands composed entirely of coral , which otherwise appear to be volcanic islands . Examples of such islands are found in the Pacific, notably the three phosphate islets of Nauru , Makatea , and Banaba , as well as Maré and Lifou in New Caledonia ; Fatu Huku in the Marquesas Islands ; and Henderson Island in the Pitcairn Islands . The uplift of these islands

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600-452: Is known to be sensitive to temperature and rainfall. The magnitude of the exhumation a rock has been subjected to may be inferred from geothermobarometry (measuring previous pressure and temperature history of a rock or assemblage). Knowing the pressure and temperature history of a region can yield an estimate of the ambient geothermal gradient and bounds on the exhumation process; however, geobarometric/geothermometric studies do not produce

650-687: Is made up of 15 members. As of the municipal elections held on 26 March 2006, 4 seats are held by the SPD , 4 by the CDU , 6 by the FWG, a citizens' coalition, and one by the A.L.F. The municipal executive is made up of 7 members and the mayor. Two seats are held by the SPD, 2 by the CDU, 2 by the FWG, and one by the A.L.F. The current mayor, Leopold Bach, was elected in 2018. Feldatal's civic coat of arms might heraldically be described thus: Or

700-404: Is proportional to the rate of increase of average surface height. The highest rates of working against gravity are required when the thickness of the crust (not the lithosphere) changes. Lithospheric flexure is the process by which the lithosphere bends under the action of forces such as the weight of a growing orogeny or changes in ice thickness related to glaciation. The lithosphere rests on

750-632: Is reminiscent of a large flat, shield-shaped volcano with a central dome, is the result of an interplay of uplift processes and ablation acting on all sides. The volcanic activity in the Vogelsberg, as well as that of the North Hessian Volcanic Region to the north which extends as far as Adelebsen in Lower Saxony , is connected with fault block activity that, during the Tertiary , led to

800-450: Is specified. Molnar and England identify three kinds of displacement to which the term "uplift" is applied: This simple equation relates the three kinds of displacement: The term geoid is used above to mean mean sea level and makes a good frame of reference. A given displacement within this frame of reference allows one to quantify the amount of work being done against gravity. Measuring uplift and exhumation can be tricky. Measuring

850-490: Is the geologic uplift of Earth's surface that is attributed to plate tectonics . While isostatic response is important, an increase in the mean elevation of a region can only occur in response to tectonic processes of crustal thickening (such as mountain building events), changes in the density distribution of the crust and underlying mantle , and flexural support due to the bending of rigid lithosphere . Tectonic uplift results in denudation (processes that wear away

900-554: Is the largest contiguous volcanic region in Central Europe with an area of 2,500 square kilometres. It is not a former shield volcano , but comprises many individual volcanoes, which are superimposed. Thus it consists of a multitude of overlapping basalt terraces, which descend from the Oberwald , the high central plateau, 600 to 773 metres high, in series of stepped rings to the edges of the mountain region. Its present appearance, which

950-409: Is the result of the movement of oceanic tectonic plates. Sunken islands or guyots with their coral reefs are the result of crustal subsidence as the oceanic plate carries the islands to deeper or lower oceanic crust areas. The word "uplift" refers to displacement contrary to the direction of the gravity vector, and displacement is only defined when the object being displaced and the frame of reference

1000-537: The Hoherodskopf and so may be used in combination. The Volcano and Southern Railway Cycleways are tarmacked and may also be used by inline skaters . There is a large network of signposted cycleways in and around the Vogelsberg Nature Fitness Park around the highest summits and also 70 km of signed mountain bike routes. The Hoherodskopf is the touristic centre of the region. Here you will find

1050-477: The Lahn - Main watershed which heads east. Because large areas of the original forest were cleared and the precipitation exceeds 1,000 mm per year, snow melt starts early. This and the less porous basalt loam soil frequently leads to flooding. In this part of the Vogelsberg, the scenery changes in loose succession from woodlands, rich in springs, wetlands, poor grassland and stream valleys; besides there are also

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1100-565: The Main and the Lahn . Groundwater and spring water from the Vogelsberg, along with water from the dem Spessart hills and Hessian Ried provides drinking water for the Rhine-Main region . As early as 1876 were springs in the eastern Vogelsberg enclosed for that purpose and the construction of water pipes from the Spessart and the Vogelsberg to the city of Frankfurt . A lack of understanding of

1150-471: The Volcano Cycleway ( Vulkanradweg , Vogelsberg Southern Railway Cycleway ( Vogelsberger Südbahnradweg  ...). Moreover, there are regular RMV buses, the so-called Vulkan Express running from Büdingen , Stockheim , Nidda , Hungen , Mücke and Schlitz via Lauterbach at weekends to the heights of the Vogelsberg. These buses are equipped with bicycle trailers. The majority of bus routes run to

1200-483: The asthenosphere , a viscous layer that in geological time scales behaves like a fluid. Thus, when loaded, the lithosphere progressively reaches an isostatic equilibrium. For example, the lithosphere on the oceanward side of an oceanic trench at a subduction zone will curve upwards due to the elastic properties of the Earth's crust. Orogenic uplift is the result of tectonic-plate collisions and results in mountain ranges or

1250-517: The muschelkalk and keuper . Erosion following the Miocene wore away the contiguous basalt nappes, which originally reached as far as the area of the Lower Main , back to isolated deposits in the central complex. Under tropical to subtropical conditions, the volcanic rocks were turned into red clays by lateritic weathering . In many places, red clays collected and bauxite was formed; moreover,

1300-514: The Eurasian plate) and folding are responsible for the suturing together of the two plates. The collision of the Indian and Eurasian plates produced the Himalayas and is also responsible for crustal thickening north into Siberia . The Pamir Mountains , Tian Shan , Altai , Hindu Kush , and other mountain belts are all examples of mountain ranges formed in response to the collision of the Indian with

1350-789: The Eurasian plate. The Ozark Plateau is a broad uplifted area which resulted from the Permian Ouachita Orogeny to the south in the states of Arkansas , Oklahoma , and Texas . Another related uplift is the Llano Uplift in Texas, a geographical location named after its uplift features. The Colorado Plateau which includes the Grand Canyon is the result of broad tectonic uplift followed by river erosion . When mountains rise slowly, either due to orogenic uplift or other processes (e.g., rebound after glaciation ), an unusual feature known as

1400-572: The Giesel Forest (350.6), which covers an area of 130 km , the Vogelsberg pushes eastwards at heights of up to over 500 m to the edge of the Fulda Basin. From a natural region perspective, the only bunter sandstone part of the Vogelsberg is clearly separated from the basaltic areas of the Lower Vogelsberg. In addition to the woods that cover almost the entire natural region (including pine forests) there are extensive vegetation-free areas by

1450-623: The Giesel Forest (see below) to the east is less of a relief feature than the geological transition from basalt to bunter sandstone. There is also this geological divide with the Fulda-Haune Tableland , which lies in front of the Knüll to the northeast. Between them is the Großenlüder-Lauterbacher Graben . By contrast, in the north, the vulcanite does not end until it reaches the adjacent North Vogelsberg Foreland , i.e. outside

1500-597: The Nature Conservation Information Centre for the High Vogelsberg Nature Park and a tourist information centre for the town of Schotten , which are open daily all year-round. From this point, three nature trails have been set up, covering in the fields of geology, nature and sensory perception. There is a summer toboggan run, a tree ropes course , numerous hiking trails and several restaurants. Tectonic uplift Tectonic uplift

1550-578: The Oberwald, but also the rest of the area. The Oberwald (351.2) is the heart of the Vogelsberg and is entirely wooded; its outer boundary roughly follows the 600 metre contour line . In outer areas of the Vogelsberg, by contrast, there is a tapestry of green pasture, arable fields and woodlands. Large parts of the Oberwald are protected. For example, the beech wood in the Taufstein Nature Reserve has been left to manage itself since 1906. On

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1600-536: The actual Vogelsberg. Even the Anterior Vogelsberg which lies outside the latter region still has large areas of basaltic rock. To the west the basalt zone reaches far into the gently rolling lowlands of the Wetterau , this depression lies alongside the middle and lower reaches of the Horloff river. From a natural landscape perspective, the region is an island of forest comprising melic grasses and beech . In

1650-458: The base. The main peaks of the Vogelsberg are the Taufstein , 773.0 metres (2,536.1 ft), and Hoherodskopf , 763 metres (2,503 ft), both now within the High Vogelsberg Nature Park . The Vogelsberg lies in the county of Vogelsbergkreis , around 60 kilometres northeast of Frankfurt between the towns of Alsfeld , Fulda , Büdingen and Nidda . To the northeast is the Knüll , to

1700-531: The centre of the range (varying by up to 5  K ) and the annual precipitation rises towards the Oberwald to an average of 1,200 mm. The basalt areas of the Vogelsberg continue towards the east and north into its neighbouring natural regions, whilst the Giesel Forest in the east is already on bunter sandstone , like the rest of the natural regions towards the east. The Vogelsberg massif has stone runs of basalt and tuff , raised bogs and areas of ancient woodland. Numerous hiking trails cross, not only

1750-523: The city of Frankfurt in the Rhine-Main region. Numerous rivers and streams rise in the Vogelsberg, and flow radially from its highest point in all directions of the compass. In clockwise order, the rivers of the main catchments are the Schwalm, Lower Fulda, Kinzig, Nidda and Ohm. Often a well known river is fed by several almost equal tributaries. The main rivers of the Vogelsberg, in clockwise order starting in

1800-425: The community of Mücke , and in the northwest on the community of Gemünden . The community consists of the centres of Ermenrod, Groß-Felda with constituent community of Schellnhausen, Kestrich, Köddingen, Stumpertenrod, Windhausen and Zeilbach. Feldatal came into being as a result of the municipal reforms in 1972 when the aforesaid constituent communities were united into a greater community. The municipal council

1850-699: The community runs the Federal Highway ( Bundesstraße ) B 49. Vogelsberg The Vogelsberg is a large volcanic mountain range in the German Central Uplands in the state of Hesse , separated from the Rhön Mountains by the Fulda river valley. Emerging approximately 19 million years ago, the Vogelsberg is Central Europe's largest basalt formation, consisting of a multitude of layers that descend from their peak in ring-shaped terraces to

1900-491: The earth's surface) by raising buried rocks closer to the surface. This process can redistribute large loads from an elevated region to a topographically lower area as well – thus promoting an isostatic response in the region of denudation (which can cause local bedrock uplift). The timing, magnitude, and rate of denudation can be estimated by geologists using pressure-temperature studies. Crustal thickening has an upward component of motion and often occurs when continental crust

1950-643: The east the Rhön , to the southeast the Spessart and to the southwest the low-lying Wetterau , which transitions to the South Hessian lowlands of the Rhine-Main region . In the opposite direction, to the northwest, the Vogelsberg transitions into parts of the West Hesse Highlands , whilst retaining the name, Vogelsberg, and the basalt rocks that bear its name continue well beyond the actual Vogelsberg. The Vogelsberg

2000-601: The formation of the Lower Hessian Basin . It began in North Hesse about 20 million years ago during the lower Miocene , reached a peak about 13-12 million years ago and came to an end about 7 million years ago, during the upper Miocene. The volcanism of the Vogelsberg was mainly active during the Middle Miocene, according to potassium-argon dating 18.5-10 million years ago, reaching its peak 17-15 million years ago. As

2050-602: The huge spoil tips of the potassium salt mine near Neuhof. The following table lists the natural regions from the centre outwards and then in clockwise order. Not only does a section of the Rhine-Weser watershed run over the Vogelsberg, but also (within the Weser and Fulda systems) the watersheds between the Eder and Schwalm and Lower Fulda as well as (within the Rhine basin ) that between

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2100-437: The iron contained in basalt was concentrated to form iron ore . These deposits were mined over a long period of time in order to produce raw materials for industry, and the basalt was and still is a highly popular raw material for gravel and natural stone production. The division of the Vogelsberg into individual natural regions is based, on the one hand, on the relief of the mountain range from its highest point towards

2150-451: The melting of ice sheets 10,000 years ago. Crustal thickening, which for example is currently occurring in the Himalayas due to the continental collision between the Indian and the Eurasian plates, can also lead to surface uplift; but due to the isostatic sinking of thickened crust, the magnitude of surface uplift will only be about one-sixth of the amount of crustal thickening. Therefore, in most convergent boundaries , isostatic uplift plays

2200-507: The north, are: In the Vogelsberg the following lengths are misleading, however: Among the waterbodies of the Vogelsbergs are the following lakes and reservoirs (sorted alphabetically): In recent years the Eurasian lynx has returned. There are rumors about wolves being sighted in the region. Sightings have been confirmed in an area north of the Vogelsberg. Wildcats are also said to exist in

2250-548: The northern slopes of the Taufstein are large stone runs of basalt. The valleys of the Western (351.0) and Eastern (351.1) High Vogelsberg generally lie at heights of over 500 m in the north. In the west, some descend to under 400 m. In the main, the boundaries follow the watersheds of the source region of the most important rivers and especially that of the Rhine-Weser watershed , which runs from southeast to northwest, and

2300-490: The outside and, on the other hand, on its river catchments which radiate outwards: the catchments of the Eder ( Schwalm ), Lower Fulda ( Schlitz and Lüder ), Main ( Kinzig and Nidda ) and Lahn ( Ohm ). The following natural regions form the Vogelsberg: Soils and rocks are, in all parts of the Vogelsberg – with the exception of the Giesel Forest – similar, but average annual temperatures drop noticeably towards

2350-483: The particular hydrogeological and ecological situation in the Vogelsberg and excessive withdrawal resulted in springs drying up, cracks appearing in buildings and subsidence of the ground. The Upper Hessian Water Companies ( Oberhessischen Versorgungsbetriebe AG , OVAG) are the largest water suppliers in the Vogelsberg: they pump out around 30 million cubic metres of ground water annually from their wells; about 2/3 goes to

2400-460: The region, although they, like lynxes, are notoriously hard to spot. As in most of Hesse, wild boar are present in large numbers. The Vogelsberg is known for its winter sports areas on the Herchenhainer Höhe and Hoherodskopf ( Alpine skiing and 55 km of loipes ). In summer, apart from hiking , cycling is well catered for on the numerous long-distance cycling routes such as

2450-417: The surface (such as the creation, cooling, and subduction of oceanic plates ) also drive plate motion. The dynamics of mountain ranges are governed by differences in the gravitational energy of entire columns of the lithosphere (see isostasy ). If a change in surface height represents an isostatically compensated change in crustal thickness, the rate of change of potential energy per unit surface area

2500-690: The uplift of a point requires measuring its elevation change – usually geoscientists are not trying to determine the uplift of a singular point but rather the uplift over a specified area. Accordingly, the change in elevation of all points on the surface of that area must be measured, and the rate of erosion must be zero or minimal. Also, sequences of rocks deposited during that uplift must be preserved. Needless to say, in mountain ranges where elevations are far above sea level these criteria are not easily met. Paleoclimatic restorations though can be valuable; these studies involve inferring changes in climate in an area of interest from changes with time of flora/fauna that

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