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Crimean Mountain Karst
The Crimean Mountain karst ( crh, Qırımnıñ dağ karstı; uk, Гірський карст Криму, translit=Hirskyi karst Krymu; russian: Горный карст Крыма, translit=Gorny karst Kryma) is a karst and regional nature reserve (zakaznik) in Crimea, a region internationally recognised as part of Ukraine but currently under occupation by Russia since 2014. It is a part of the larger Qarabiy yayla mountain range, making up the central part of the range. The area was first described by Alexander Kruber in 1915. In 1989 the Crimean Mountain karst was recognised as a regional nature reserve. Description In 1915 Alexander Kruber first described the karst of the mountains. The Crimean Mountain karst was declared a nature reserve in 1989. Comprising central Qarabiy yayla, the Crimean Mountain karst includes more than 4,000 sinkholes and 209 caves, among them the , the deepest in Crimea. Additionally, the top of the karst is home to beech and pine forests, as well as m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karst
Karst is a topography formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum. It is characterized by underground drainage systems with sinkholes and caves. It has also been documented for more weathering-resistant rocks, such as quartzite, given the right conditions. Subterranean drainage may limit surface water, with few to no rivers or lakes. However, in regions where the dissolved bedrock is covered (perhaps by debris) or confined by one or more superimposed non-soluble rock strata, distinctive karst features may occur only at subsurface levels and can be totally missing above ground. The study of ''paleokarst'' (buried karst in the stratigraphic column) is important in petroleum geology because as much as 50% of the world's hydrocarbon reserves are hosted in carbonate rock, and much of this is found in porous karst systems. Etymology The English word ''karst'' was borrowed from German in the late 19th century, which entered German much earlier ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaolinite
Kaolinite ( ) is a clay mineral, with the chemical composition Al2 Si2 O5( OH)4. It is an important industrial mineral. It is a layered silicate mineral, with one tetrahedral sheet of silica () linked through oxygen atoms to one octahedral sheet of alumina () octahedra. Rocks that are rich in kaolinite are known as kaolin () or china clay. Kaolin is occasionally referred to by the antiquated term lithomarge, from the Ancient Greek ''litho-'' and Latin ''marga'', meaning 'stone of marl'. Presently the name lithomarge can refer to a compacted, massive form of kaolin. The name ''kaolin'' is derived from Gaoling (), a Chinese village near Jingdezhen in southeastern China's Jiangxi Province. The name entered English in 1727 from the French version of the word: , following François Xavier d'Entrecolles's reports on the making of Jingdezhen porcelain. Kaolinite has a low shrink–swell capacity and a low cation-exchange capacity (1–15 meq/100 g). It is a soft, earthy, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crimean Mountains
The Crimean Mountains ( uk, Кримські гори, translit. ''Krymski hory''; russian: Крымские горы, translit. ''Krymskie gory''; crh, Qırım dağları) are a range of mountains running parallel to the south-eastern coast of Crimea, between about from the sea. Toward the west, the mountains drop steeply to the Black Sea, and to the east, they change slowly into a steppe landscape. The Crimean Mountains consist of three subranges. The highest is the Main range. The Main range is subdivided into several masses, known as yaylas or mountain plateaus (''Yayla'' is Crimean Tatar for "Alpine Meadow"). They are: * Baydar Yayla * Ay-Petri Yayla * Yalta Yayla * Nikita Yayla * Hurzuf Yayla * Babugan Yayla * Chatyr-Dag Yayla * Dologorukovskaya (Subatkan) Yayla * Demirji Yayla * Karabi Yayla Highest peaks The Crimea's highest peak is the Roman-Kosh (; , crh, Roman Qoş) on the Babugan Yayla at . Other important peaks over 1,200 metres include: * Demir-Kapu ( uk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annexation Of Crimea By The Russian Federation
In February and March 2014, Russia invaded and subsequently annexed the Crimean Peninsula from Ukraine. This event took place in the aftermath of the Revolution of Dignity and is part of the wider Russo-Ukrainian War. The events in Kyiv that ousted Ukrainian president Viktor Yanukovych on 22 February 2014 sparked pro-Russian demonstrations as of 23 February against the (prospected) new Ukrainian government. At the same time Russian president Vladimir Putin discussed Ukrainian events with security service chiefs remarking that "we must start working on returning Crimea to Russia". On 27 February, Russian troops captured strategic sites across Crimea, followed by the installation of the pro-Russian Aksyonov government in Crimea, the Crimean status referendum and the declaration of Crimea's independence on 16 March 2014. Although Russia initially claimed their military was not involved in the events, Putin later admitted that troops were deployed to "stand behind Crimea's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Verkhovna Rada
The Verkhovna Rada of Ukraine ( uk, Верхо́вна Ра́да Украї́ни, translit=, Verkhovna Rada Ukrainy, translation=Supreme Council of Ukraine, Ukrainian abbreviation ''ВРУ''), often simply Verkhovna Rada or just Rada, is the Wikt:Unicameralism, unicameral parliament of Ukraine. The Verkhovna Rada is composed of 450 Deputy (legislator), deputies, who are presided over by a Chairman of the Verkhovna Rada, chairman (speaker). The Verkhovna Rada meets in the Verkhovna Rada building in Ukraine's capital Kyiv. The deputies elected in the 21 July 2019 Ukrainian parliamentary election were inaugurated on 29 August 2019. The Verkhovna Rada developed out of the systems of the republican representative body known in the Soviet Union as Supreme Soviet (Supreme Council) that was first established 26 June 1938 as a type of legislature of the Ukrainian Soviet Socialist Republic, Ukrainian SSR after the dissolution of the All-Ukrainian Congress of Soviets, Congress of Soviet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Declaration Of Independence Of Ukraine
The Act of Declaration of Independence of Ukraine ( uk, Акт проголошення незалежності України, Akt proholoshennya nezalezhnosti Ukrayiny) was adopted by the Supreme Soviet of the Ukrainian SSR on 24 August 1991.A History of Ukraine: The Land and Its Peoples by , , 2010, (page ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ukrainian SSR
The Ukrainian Soviet Socialist Republic ( uk, Украї́нська Радя́нська Соціалісти́чна Респу́бліка, ; russian: Украи́нская Сове́тская Социалисти́ческая Респу́блика, group=note), abbreviated as the Ukrainian SSR, UkrSSR, or UkSSR, and also known as Soviet Ukraine, was one of the constituent republics of the Soviet Union from 1922 until 1991. In the anthem of the Ukrainian SSR, it was referred to simply as ''Ukraine''. Under the Soviet one-party model, the Ukrainian SSR was governed by the Communist Party of the Soviet Union through its republican branch: the Communist Party of Ukraine. The first iterations of the Ukrainian SSR were established during the Russian Revolution, particularly after the Bolshevik Revolution. The outbreak of the Ukrainian–Soviet War in the former Russian Empire saw the Bolsheviks defeat the independent Ukrainian People's Republic, after which they fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jurassic
The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The Jurassic constitutes the middle period of the Mesozoic, Mesozoic Era and is named after the Jura Mountains, where limestone strata from the period were first identified. The start of the Jurassic was marked by the major Triassic–Jurassic extinction event, associated with the eruption of the Central Atlantic magmatic province, Central Atlantic Magmatic Province. The beginning of the Toarcian Stage started around 183 million years ago and is marked by an extinction event associated with widespread Anoxic event, oceanic anoxia, ocean acidification, and elevated temperatures likely caused by the eruption of the Karoo-Ferrar, Karoo-Ferrar large igneous provinces. The end of the Jurassic, however, has no clear boundary with the Cretaceous and i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrolusite
Pyrolusite is a mineral consisting essentially of manganese dioxide ( Mn O2) and is important as an ore of manganese.. It is a black, amorphous appearing mineral, often with a granular, fibrous, or columnar structure, sometimes forming reniform crusts. It has a metallic luster, a black or bluish-black streak, and readily soils the fingers. The specific gravity is about 4.8. Its name is from the Greek for ''fire'' and to ''wash'', in reference to its use as a way to remove tints from glass. Occurrence Pyrolusite and romanechite are among the most common manganese minerals. Pyrolusite occurs associated with manganite, hollandite, hausmannite, braunite, chalcophanite, goethite, and hematite under oxidizing conditions in hydrothermal deposits. It also occurs in bogs and often results from alteration of manganite. Use The metal is obtained by reduction of the oxide with sodium, magnesium, aluminium, or by electrolysis. Pyrolusite is extensively used for the manufacture of spi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quartz
Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation from α-quartz to β-quartz takes place abruptly at . Since the transformation is accompanied by a significant change in volume, it can easily induce microfracturing of ceramics or rocks passing through this temperature threshold. There are many different varieties of quartz, several of which are classified as gemstones. Since antiquity, varieties of quartz have been the most commonly used minerals in the making of jewelry and hardstone carvings, especially in Eurasia. Quartz is the mineral defining the val ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zakaznik
Zakaznik (russian: зака́зник, зака́зники, transliterated: ''zakaznik, zakazniki''; uk, singular: заказни́к or зака́зник; plural: заказники́ or зака́зники, transliterated: ''zakaznyk'', ''zakaznyky''; Belarusian: заказнік, заказнікі, transliterated: zakaznik, zakazniki) is a type of protected area in former Soviet republics such as Belarus, Russia, Ukraine that meets World Conservation Union's (IUCN) category IV, or more frequently category VI criteria. Many zakazniks have traditionally been managed as game reserves. Some protect complex ecosystems, colonies of birds, or populations of rare plants. They range in size from 0.5 ha to 6,000,000 ha. In other words, it is nature reserve notion. Zakazniks are the areas where temporary or permanent limitations are placed upon certain on-site economic activities, such as logging, mining, grazing, hunting, etc. They correspond to ''sanctuary'' in UNESCO World Her ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Illite
Illite is a group of closely related non-expanding clay minerals. Illite is a secondary mineral precipitate, and an example of a phyllosilicate, or layered alumino-silicate. Its structure is a 2:1 sandwich of silica tetrahedron (T) – alumina octahedron (O) – silica tetrahedron (T) layers. The space between this T-O-T sequence of layers is occupied by poorly hydrated potassium cations which are responsible for the absence of swelling. Structurally, illite is quite similar to muscovite with slightly more silicon, magnesium, iron, and water and slightly less tetrahedral aluminium and interlayer potassium. The chemical formula is given as , but there is considerable ion (isomorphic) substitution. It occurs as aggregates of small monoclinic grey to white crystals. Due to the small size, positive identification usually requires x-ray diffraction or SEM-EDS ( automated mineralogy) analysis. Illite occurs as an altered product of muscovite and feldspar in weathering and hydrothermal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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