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Zhiguli Mountains
The Zhiguli Mountains ( rus, Жигулëвские горы) or simply Zhiguli ( rus, Жигули́, p=ʐɨɡʊˈlʲi), are a range of wooded mountains located in Russia on the right bank of the Volga River, inside the Samara bend. The mountains are an important source of limestone and oil (extracted since World War II) and are also popular as a scenic area for local and regional tourism. Their altitude reaches a maximum of c. 1,240 ft (380 m). The range is named for a nearby town Zhigulyovka (no longer extant), itself probably named for an early inhabitant, Zhegul (russian: Жегуль).E.M. Pospelov, ''Geograficheskie nazvaniya mira'' (Moscow, 1998), p. 155. Formerly, the range was known as the Lada, after the river pirates who used to hide out in its wooded valleys, a name which is still in popular local usage today. Geography and geology The range's topography is skewed from north to south: the northern slopes drop very abruptly down to the Volga River, while to the sou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volga River
The Volga (; russian: Во́лга, a=Ru-Волга.ogg, p=ˈvoɫɡə) is the List of rivers of Europe#Rivers of Europe by length, longest river in Europe. Situated in Russia, it flows through Central Russia to Southern Russia and into the Caspian Sea. The Volga has a length of , and a catchment area of «Река Волга» , Russian State Water Registry which is more than twice the size of Ukraine. It is also Europe's largest river in terms of average discharge (hydrology), discharge at delta – between and – and of drainage basin. It is widely regarded as the Rivers in Russia, national river of Russia. The hypothetical old Russian state, the Rus' Khaganate, arose along the Volga . Historically, the river served as an important meeting place of various Eurasian civilizations. The river flows in Russia through forests, Fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carboniferous
The Carboniferous ( ) is a geologic period and system of the Paleozoic that spans 60 million years from the end of the Devonian Period million years ago ( Mya), to the beginning of the Permian Period, million years ago. The name ''Carboniferous'' means "coal-bearing", from the Latin '' carbō'' ("coal") and '' ferō'' ("bear, carry"), and refers to the many coal beds formed globally during that time. The first of the modern 'system' names, it was coined by geologists William Conybeare and William Phillips in 1822, based on a study of the British rock succession. The Carboniferous is often treated in North America as two geological periods, the earlier Mississippian and the later Pennsylvanian. Terrestrial animal life was well established by the Carboniferous Period. Tetrapods (four limbed vertebrates), which had originated from lobe-finned fish during the preceding Devonian, became pentadactylous in and diversified during the Carboniferous, including early amphibian line ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oil Fields Of Russia
An oil is any nonpolar chemical substance that is composed primarily of hydrocarbons and is hydrophobic (does not mix with water) & lipophilic (mixes with other oils). Oils are usually flammable and surface active. Most oils are unsaturated lipids that are liquid at room temperature. The general definition of oil includes classes of chemical compounds that may be otherwise unrelated in structure, properties, and uses. Oils may be animal, vegetable, or petrochemical in origin, and may be volatile or non-volatile. They are used for food (e.g., olive oil), fuel (e.g., heating oil), medical purposes (e.g., mineral oil), lubrication (e.g. motor oil), and the manufacture of many types of paints, plastics, and other materials. Specially prepared oils are used in some religious ceremonies and rituals as purifying agents. Etymology First attested in English 1176, the word ''oil'' comes from Old French ''oile'', from Latin ''oleum'', which in turn comes from the Greek (''elaion'') ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Ranges Of Russia
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher than a hill, typically rising at least 300 metres (1,000 feet) above the surrounding land. A few mountains are isolated summits, but most occur in mountain ranges. Mountains are formed through tectonic forces, erosion, or volcanism, which act on time scales of up to tens of millions of years. Once mountain building ceases, mountains are slowly leveled through the action of weathering, through slumping and other forms of mass wasting, as well as through erosion by rivers and glaciers. High elevations on mountains produce colder climates than at sea level at similar latitude. These colder climates strongly affect the ecosystems of mountains: different elevations have different plants and animals. Because of the less hospitable terrain and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zhiguli (car Brand)
Zhiguli ( rus, Жигули, p=ʐɨɡʊˈlʲi) was a designation of cars based on the Fiat 124 manufactured in Russia and the Soviet Union by AvtoVAZ (formerly VAZ) during 1970-2012 and somewhat longer in some places abroad. For the majority of export markets however the cars were sold under the Lada brand. The car was also manufactured in Ukraine and in Egypt. In Egypt the last car of this model was manufactured in 2014. The designation is named after the Zhiguli Mountains by the Volga River, to match the name of the plant ('VAZ' stands for "Volzhsky Avtomobilny Zavod" or "Volga Automobile Plant"). There have been 7 models of this designation: VAZ-2101, VAZ-2102, VAZ-2103, VAZ-2104, VAZ-2105, VAZ-2106, VAZ-2107, with modifications indicated by an extra digit, see List of AvtoVAZ vehicles. The longest-living model was VAZ-2105 (1979-2010). After the collapse of the Soviet Union in 1991, a shortage of used cars meant that many export Zhigulis badged as Ladas were re-imported bac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zhiguli Hydroelectric Station
The Zhiguli Hydroelectric Station or Zhigulyovskaya Hydroelectric Station (russian: Жигулёвская ГЭС, Zhigulyovskaya GES++), formerly known as Kuybyshev Hydroelectric Station (Kuybyshev GES) is a large dam and hydroelectric station on the Volga River, located near Zhigulyovsk and Tolyatti in Samara Oblast of Russia. It is the sixth stage of the Volga-Kama Cascade of dams, and the second of them by installed power. General data Construction started in 1950 and was completed in 1957. The complex consists of earth-fill dam, 2800 m long, 750 m wide and 52 m high, concrete spillway dam, 980 m long, power plant house, 700 m long, and two-lane navigable locks. Installed power is 2,488 MW, average annual production is 11,700 GWh. The power house has 20 generator units with Kaplan turbines, 4 of 120 MW and 16 of 125.5 MW at 22.5 m head. The dam forms Kuybyshev Reservoir. Economic value The station covers peak loads and maintains frequency stability in the unified power ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zhigulyovsk
Zhigulyovsk ( rus, Жигулёвск, p=ʐɨɡʊˈlʲɵfsk) is a town in Samara Oblast, Russia, located on the right bank of the Volga River in the Samara Bend near the Zhiguli Mountains, west of Samara. Population: Etymology The name Zhigulyovsk is taken from the Zhiguli Mountains, but they are named for an earlier settlement of Zhigulyovka, itself probably named for an early inhabitant, Zhegul ().Е. М. Поспелов. "Географические названия мира" (Москва, 1998), p. 155. History The town occupies the territories of former villages of Otvazhnoye (, known since 1840) and Morkvashi (, known since 1647). The work settlement of Otvazhny () was built here to develop the oil deposits. In 1949, it was merged with the villages and renamed Zhigulyovsk. It was granted town status in 1952. Administrative and municipal status Within the framework of administrative divisions, it is, together with five rural localities, incorporated as the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aeration
Aeration (also called aerification or aeriation) is the Systems engineering process, process by which air is circulated through, mixed with or solvation, dissolved in a liquid or other substances that act as a fluid (such as soil). Aeration processes create additional surface area in the mixture, allowing greater chemical or suspension reactions. Aeration of liquids Methods Aeration of liquids (usually water) is achieved by: * passing air through the liquid by means of the Venturi tube, Aeration Turbine, aeration turbines or compressed air which can be combined with diffuser(s) air stone(s), as well as fine bubble diffusers, coarse bubble diffusers or linear aeration tubing. Ceramics are suitable for this purpose, often involving dispersion of fine air or gas bubbles through the porous ceramic into a liquid. The smaller the bubbles, the more gas is exposed to the liquid increasing the gas transfer efficiency. Diffusers or spargers can also be designed into the system to cause turbu ... [...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 their am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samara Oblast
Samara Oblast ( rus, Сама́рская о́бласть, r=Samarskaya oblast, p=sɐˈmarskəjə ˈobləsʲtʲ) is a federal subjects of Russia, federal subject of Russia (an oblast). Its administrative center is the types of inhabited localities in Russia, city of Samara. From 1935 to 1991, it was known as Kuybyshev Oblast ( rus, Ку́йбышевская о́бласть, r=Kuybyshevskaya Oblast, p=ˈkujbɨʂɨfskəjə ˈobləsʲtʲ). As of the Russian Census (2010), 2010 Census, the population of the oblast was 3,215,532. The oblast borders Tatarstan in the north, Orenburg Oblast in the east, Kazakhstan (West Kazakhstan Province) in the south, Saratov Oblast in the southwest and Ulyanovsk Oblast in the west. History The Samara region contains a remarkable succession of archaeological cultures from 7000 BC to 4000 BC. These sites have revealed Europe's earliest pottery (Elshanka culture), the world's oldest horse burial and signs of horse worship (the Syezzheye cemeter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dolomite (rock)
Dolomite (also known as dolomite rock, dolostone or dolomitic rock) is a sedimentary carbonate rock that contains a high percentage of the mineral dolomite, CaMg(CO3)2. It occurs widely, often in association with limestone and evaporites, though it is less abundant than limestone and rare in Cenozoic rock beds (beds less than about 66 million years in age). The first geologist to distinguish dolomite rock from limestone was Belsazar Hacquet in 1778. Most dolomite was formed as a magnesium replacement of limestone or of lime mud before lithification. The geological process of conversion of calcite to dolomite is known as dolomitization and any intermediate product is known as dolomitic limestone. The "dolomite problem" refers to the vast worldwide depositions of dolomite in the past geologic record in contrast to the limited amounts of dolomite formed in modern times. Recent research has revealed sulfate-reducing bacteria living in anoxic conditions precipitate dolomite which ind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plateau
In geology and physical geography, a plateau (; ; ), also called a high plain or a tableland, is an area of a highland consisting of flat terrain that is raised sharply above the surrounding area on at least one side. Often one or more sides have deep hills or escarpments. Plateaus can be formed by a number of processes, including upwelling of volcanic magma, extrusion of lava, and erosion by water and glaciers. Plateaus are classified according to their surrounding environment as intermontane, piedmont, or continental. A few plateaus may have a small flat top while others have wide ones. Formation Plateaus can be formed by a number of processes, including upwelling of volcanic magma, extrusion of lava, Plate tectonics movements and erosion by water and glaciers. Volcanic Volcanic plateaus are produced by volcanic activity. The Columbia Plateau in the north-western United States is an example. They may be formed by upwelling of volcanic magma or extrusion of lava. The un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
