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Paasselkä Devil
Paasselkä (earlier ''Paasivesi'', both names roughly mean 'Stone lake') is an oval-shaped lake formed in an eroded impact crater in Southern Savonia, Finland. The lake, which is a part of Orivesi (lake), Orivesi, which is in turn part of the Saimaa, Greater Saimaa, is devoid of islands which makes it different from other lakes in the region. Paasselkä is also unusually deep, 75 m at the deepest point. The Paasselkä impact occurred roughly <1800 million years ago (Statherian period of the Paleoproterozoic) and affected Paleoproterozoic crystalline rocks and some overlying sandstones of the Baltic Shield. Because of the unusual shape and associated Earth's magnetic field, magnetic anomalies, Paasselkä was suspected to have an impact origin long until it was confirmed after a deep Boring (earth), drilling in 1999 making it the ninth known impact crater in Finland. Unlike many Finnish craters, it does not seem to have been buried under layers of sediment. Light ...
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Southern Savonia
South Savo (or Southern Savonia; fi, Etelä-Savo; sv, Södra Savolax) is a region in the south-east of Finland. It borders the regions of North Savo, North Karelia, South Karelia, Kymenlaakso, Päijät-Häme, and Central Finland. The total area of South Savo is 18,768.33 km2 (7,246.5 sq mi), with a population of 153,738 (2011). South Savo is located in the heart of the Finnish lake district, and contains Lake Saimaa, the largest lake in Finland. The three major towns in the region are Mikkeli, Savonlinna and Pieksämäki. Historical provinces ''For history, geography and culture see: Savonia'' Municipalities South Savo includes 12 municipalities listed below (towns marked in bold). * Enonkoski **Population: * Hirvensalmi **Population: * Juva **Population: * Kangasniemi **Population: * Mikkeli (''S:t Michel'') **Population: * Mäntyharju **Population: * Pertunmaa **Population: * Pieksämäki **Population: * Puumala **Population: * Rantasalmi **Population: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boring (earth)
Boring is drilling a hole, tunnel, or well in the Earth. It is used for various applications in geology, agriculture, hydrology, civil engineering, and mineral exploration. Today, most Earth drilling serves one of the following purposes: * return samples of the soil and/or rock through which the drill passes * access rocks from which material can be extracted * access rocks which can then be measured * provide access to rock for purposes of providing engineering support Unlike drilling in other materials where the aim is to create a hole for some purpose, often the case of drilling or coring is to get an understanding of the ground/ lithology. This may be done for prospecting to identify and quantify an ore body for mining, or to determining the type of foundations needed for a building or raised structure, or for underground structures, including tunnels and deep basements where an understanding of the ground is vital to determining how to excavate and the support philosophy. Dr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lakes Of Kitee
A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much larger oceans, they do form part of the Earth's water cycle. Lakes are distinct from lagoons, which are generally coastal parts of the ocean. Lakes are typically larger and deeper than ponds, which also lie on land, though there are no official or scientific definitions. Lakes can be contrasted with rivers or streams, which usually flow in a channel on land. Most lakes are fed and drained by rivers and streams. Natural lakes are generally found in mountainous areas, rift zones, and areas with ongoing glaciation. Other lakes are found in endorheic basins or along the courses of mature rivers, where a river channel has widened into a basin. Some parts of the world have many lakes formed by the chaotic drainage patterns left over from the last ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
