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Kaban Lakes
The Kaban Lakes ( tt-Cyrl, Кабан күле; ) are a system of lakes in Kazan, Republic of Tatarstan, Russia that includes Nizhny (Blizhny) Kaban, Verkhny Kaban, and Sredny Kaban. With a combined area of , they comprise the biggest lake in Tatarstan. The lakes are connected with the Kazanka River by the Bolaq channel and a subterranean channel from Bolaq-Kazansu. They are also connected with the Volga River by the city's sewage system. The Thousandth Anniversary of Islam Mosque is situated on the bank. The medieval Volga Bulgarians' graves which date back to 12-13th century were founded on the banks of Arğı Qaban. One legend claims that, in the days before the Khanate of Kazan fell, the Khans threw all their valuables into the lakes. Another legend about the origin of the lakes' names claims that, at the Mongol invasion of Volga Bulgaria, the Bulgarian prince ''Qabanbäk'', escaped from Bilär city (or in Bolghar), fled to the banks of the lake and built a castle. Another v ... [...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] |
Khan (title)
Khan ''khan/qan''; tr, han; Azerbaijani: ''xan''; Ottoman: ''han''; Old Turkic: ''kan''; Chinese: 汗 ''hán''; Goguryeo: 皆 ''key''; Buyeo: 加 ''ka''; Silla: 干 ''kan''; Gaya: 旱 ''kan''; Baekje: 瑕 ''ke''; Manchu: ; Persian: خان; Punjabi: ਖ਼ਾਨ; Hindustani: ख़ान or ख़ां (Devanagari), or (Nastaleeq); Balochi: خان; Bulgarian: хан, ''khan''; Chuvash: хун, ''hun''; Arabic: خان; bn, খান or ) () is a historic Turko-Mongol title originating among nomadic tribes in the Central and Eastern Eurasian Steppe to refer to a chief or ruler. It first appears among the Rouran and then the Göktürks as a variant of khagan (sovereign, emperor) and implied a subordinate ruler. In the Seljuk Empire, it was the highest noble title, ranking above malik (king) and emir (prince). In the Mongol Empire it signified the ruler of a horde (''ulus''), while the ruler of all the Mongols was the khagan or great khan. The title subsequently de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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