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Domfelsen
The Domfelsen is a rock formation near Magdeburg Cathedral, part of which juts out into the River Elbe in Germany. The name means "Cathedral Rocks" Geology The Domfelsen consists mainly of sandstone with a small proportion of siltstone. The rock is part of the rotliegendes formation and thus dates to the Lower Permian period. This outcrop of bedrock may be viewed as a continuation of the Flechtingen Hills that, in the urban area of Magdeburg, is mostly covered by a thin layer of Quaternary depositions. Significance The rocks are of particular significance for river navigation on the Elbe and also for the river's ecosystem. The rocks, which are clearly visible on the west bank below the cathedral when water levels are low, affect local current conditions. Even during high water, ships can only pass down the river by sailing close to the eastern bank. Commercial shipping is not allowed to cross at this point; traffic is regulated remotely by a light system. The speed of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Domfelsen Magdeburg
The Domfelsen is a rock formation near Magdeburg Cathedral, part of which juts out into the River Elbe in Germany. The name means "Cathedral Rocks" Geology The Domfelsen consists mainly of sandstone with a small proportion of siltstone. The rock is part of the rotliegendes formation and thus dates to the Lower Permian period. This outcrop of bedrock may be viewed as a continuation of the Flechtingen Hills that, in the urban area of Magdeburg, is mostly covered by a thin layer of Quaternary depositions. Significance The rocks are of particular significance for river navigation on the Elbe and also for the river's ecosystem. The rocks, which are clearly visible on the west bank below the cathedral when water levels are low, affect local current conditions. Even during high water, ships can only pass down the river by sailing close to the eastern bank. Commercial shipping is not allowed to cross at this point; traffic is regulated remotely by a light system. The speed of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flechtingen Hills
The Flechtingen Hills (german: Flechtinger Höhenzug) are a wooded, hilly upland area up to 179 m high in the northwestern part of the German state of Saxony-Anhalt, named after the town of Flechtingen. Location The Flechtingen Hills are bordered by the River Aller to the west, the Spetze, a right-hand tributary of the Aller, to the north, the valley of the Ohre to the northeast, through which the Mittelland Canal also runs, and by the Beber, a tributary of the Ohre, to the south. One of the highest elevations in the Flechtingen Hills is the ''Butterberg'' near Ivenrode at . Geology Unlike the surrounding region, geologically old rocks reach the surface of the Flechtingen Hills. It thus forms the northernmost region of bedrock in Germany, because North Germany is almost completely covered by unconsolidated rocks of the Quaternary period. The ridge is mostly composed of volcanic rock and sedimentary rocks of the Carboniferous and Permian periods. In places these are mined i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magdeburg Cathedral
Magdeburg Cathedral (german: Magdeburger Dom), officially called the Cathedral of Saints Maurice and Catherine (german: Dom zu Magdeburg St. Mauritius und Katharina), is a Protestant cathedral in Germany and the oldest Gothic cathedral in the country. It is the proto-cathedral of the former Prince-Archbishopric of Magdeburg. Today it is the principal church of the Evangelical Church in Central Germany. The south steeple is 99.25 m (325 ft 7 in) tall, the north tower 100.98 m (331 ft 4 in), making it one of the tallest cathedrals in eastern Germany. The cathedral is likewise the landmark of Magdeburg, the capital city of the '' Bundesland'' of Saxony-Anhalt, and is also home to the grave of Emperor Otto I the Great and his first wife Edith. The first church built in 937 at the location of the current cathedral was an abbey called St. Maurice, dedicated to Saint Maurice. The current cathedral was constructed over the period of 300 years starting from 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magdeburg
Magdeburg (; nds, label= Low Saxon, Meideborg ) is the capital and second-largest city of the German state Saxony-Anhalt. The city is situated at the Elbe river. Otto I, the first Holy Roman Emperor and founder of the Archdiocese of Magdeburg, was buried in the city's cathedral after his death. Magdeburg's version of German town law, known as Magdeburg rights, spread throughout Central and Eastern Europe. In the Late Middle Ages, Magdeburg was one of the largest and most prosperous German cities and a notable member of the Hanseatic League. One of the most notable people from the city is Otto von Guericke, famous for his experiments with the Magdeburg hemispheres. Magdeburg has been destroyed twice in its history. The Catholic League sacked Magdeburg in 1631, resulting in the death of 25,000 non-combatants, the largest loss of the Thirty Years' War. During the World War II the Allies bombed the city in 1945 and destroying much of it. After World War II the city b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ford (river)
A ford is a shallow place with good footing where a river or stream may be crossed by wading, or inside a vehicle getting its wheels wet. A ford may occur naturally or be constructed. Fords may be impassable during high water. A low-water crossing is a low bridge that allows crossing over a river or stream when water is low but may be treated as a ford when the river is high and water covers the crossing. Description A ford is a much cheaper form of river crossing than a bridge, and it can transport much more weight than a bridge, but it may become impassable after heavy rain or during flood conditions. A ford is therefore normally only suitable for very minor roads (and for paths intended for walkers and horse riders etc.). Most modern fords are usually shallow enough to be crossed by cars and other wheeled or tracked vehicles (a process known as "fording"). Fords may be accompanied by stepping stones for pedestrians. The United Kingdom has more than 2,000 fords, and mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tugboat
A tugboat or tug is a marine vessel that manoeuvres other vessels by pushing or pulling them, with direct contact or a tow line. These boats typically tug ships in circumstances where they cannot or should not move under their own power, such as in crowded harbour or narrow canals, or cannot move at all, such as barges, disabled ships, log rafts, or oil platforms. Some are ocean-going, some are icebreakers or salvage tugs. Early models were powered by steam engines, long ago superseded by diesel engines. Many have deluge gun water jets, which help in firefighting, especially in harbours. Types Seagoing Seagoing tugs (deep-sea tugs or ocean tugboats) fall into four basic categories: #The standard seagoing tug with model bow that tows almost exclusively by way of a wire cable. In some rare cases, such as some USN fleet tugs, a synthetic rope hawser may be used for the tow in the belief that the line can be pulled aboard a disabled ship by the crew owing to its lightne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecosystem
An ecosystem (or ecological system) consists of all the organisms and the physical environment with which they interact. These biotic and abiotic components are linked together through nutrient cycles and energy flows. Energy enters the system through photosynthesis and is incorporated into plant tissue. By feeding on plants and on one another, animals play an important role in the movement of matter and energy through the system. They also influence the quantity of plant and microbial biomass present. By breaking down dead organic matter, decomposers release carbon back to the atmosphere and facilitate nutrient cycling by converting nutrients stored in dead biomass back to a form that can be readily used by plants and microbes. Ecosystems are controlled by external and internal factors. External factors such as climate, parent material which forms the soil and topography, control the overall structure of an ecosystem but are not themselves influenced by the ecosyst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Navigation
Inland navigation, inland barge transport or inland waterway transport (IWT) is a transport system allowing ships and barges to use inland waterways (such as canals, rivers and lakes). These waterways have inland ports, marinas, quays, and wharfs. Environment Modern researchers have long recognised that inland navigation is a relatively environmentally friendly option for freight transport compared to other modes of transportation such as air carriage and road transport, and similar to rail freight transport. Therefore, policy makers have been aiming to shift the volume of cargo transported by more pollutive means towards inland navigation in order to reduce the overall environmental impact of transport, for example, as part of the European Green Deal (2019). To accomplish this, however, various challenges need to be tackled, including making inland navigation itself less pollutive than it has been, building larger barges and tows to increase their efficiency, and constructin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quaternary
The Quaternary ( ) is the current and most recent of the three period (geology), periods of the Cenozoic era (geology), Era in the geologic time scale of the International Commission on Stratigraphy (ICS). It follows the Neogene Period and spans from 2.58 million years ago to the present. The Quaternary Period is divided into two epochs: the Pleistocene (2.58 million years ago to 11.7 thousand years ago) and the Holocene (11.7 thousand years ago to today, although a third epoch, the Anthropocene, has been proposed but is not yet officially recognised by the ICS). The Quaternary Period is typically defined by the cyclic growth and decay of continental ice sheets related to the Milankovitch cycles and the associated climate and environmental changes that they caused. Research history In 1759 Giovanni Arduino (geologist), Giovanni Arduino proposed that the geological strata of northern Italy could be divided into four successive formations or "orders" ( it, quattro ord ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Permian
The Permian ( ) is a geologic period and stratigraphic system which spans 47 million years from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.9 Mya. It is the last period of the Paleozoic Era; the following Triassic Period belongs to the Mesozoic Era. The concept of the Permian was introduced in 1841 by geologist Sir Roderick Murchison, who named it after the region of Perm in Russia. The Permian witnessed the diversification of the two groups of amniotes, the synapsids and the sauropsids ( reptiles). The world at the time was dominated by the supercontinent Pangaea, which had formed due to the collision of Euramerica and Gondwana during the Carboniferous. Pangaea was surrounded by the superocean Panthalassa. The Carboniferous rainforest collapse left behind vast regions of desert within the continental interior. Amniotes, which could better cope with these drier conditions, rose to dominance in place of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bundesarchiv Bild 183-24263-0008, Durch Verbesserungen Im Elbverkehr Werden Jährlich Grosse Summen Eingespart
, type = Archive , seal = , seal_size = , seal_caption = , seal_alt = , logo = Bundesarchiv-Logo.svg , logo_size = , logo_caption = , logo_alt = , image = Bundesarchiv Koblenz.jpg , image_caption = The Federal Archives in Koblenz , image_alt = , formed = , preceding1 = , preceding2 = , dissolved = , superseding1 = , superseding2 = , agency_type = , jurisdiction = , status = Active , headquarters = PotsdamerStraße156075Koblenz , coordinates = , motto = , employees = , budget = million () , chief1_name = Michael Hollmann , chief1_position = President of the Federal Archives , chief2_name = Dr. Andrea Hänger , chief2_position ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotliegendes
The Rotliegend, Rotliegend Group or Rotliegendes (german: the underlying red) is a lithostratigraphic unit (a sequence of rock strata) of latest Carboniferous to Guadalupian (middle Permian) age that is found in the subsurface of large areas in western and central Europe. The Rotliegend mainly consists of sandstone layers. It is usually covered by the Zechstein and lies on top of regionally different formations of late Carboniferous age. The name Rotliegend has in the past not only been used to address the rock strata themselves, but also the time span in which they were formed (in which case the Rotliegend was considered a series or subsystem of the Permian). This time span corresponds roughly with the length of the Cisuralian epoch. Facies and formation In large parts of Pangaea, the last phases of the Hercynian orogeny were still ongoing during the start of the Permian. At the same time local crustal extension formed intramontane basins such as the large Permian Ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
