Tuesday, May 22, 2007

  • VULCANIZATE, the same, that gum.
  • VULCANIZATION, metamorphosis of rubber into the gum, carried out including t. n. Curing agents (napr., sulfur, organic peroxide compounds, some synthetic resins) or under action of ionizing radiation. As a result of a vulcanization toughness, hardness, elasticity are increased, is warm also frost resistance of rubber, his dissolubility in organic solvents is sinked.
  • VOLCANISM, set of the phenomena stipulated by penetration of a magma from depths of the Earth on its surface.
  • VOLCANIC SIERRA (Pacific Kordiljera), a circuit of the volcanic cones, extended along the Pacific shore Center. America. Active volcanoes: Tajumulco (4217 m, a peak level Center. America) in Guatemala, Santa Ana, Izalco (El Salvador), Irazu (Costa Rica), etc.
  • VOLCANIC CHARGES, the tear-out of the cooled down lava dumped at eruption of burning mountains in fluid or plastic condition and accepting spherical, spindle-shaped and other forms. A diameter of volcanic charges from several sm up to 5-7 m.
  • VOLCANIC GASES, the gases secreted with burning mountains both during eruption - eruptivnye, and in the seasons of his hangover activity - fumarolnye. In their structure pairs H2O, H2, HCl, HF, H2S, CO, CO2 are established, etc. Passing through a zone of underground waters, form hot wells.
  • VOLCANIC ROCKS (vulcanites), the rocks derivated as a result of eruptions of burning mountains. Distinguish given vent, or effusive (basalts, andesites, trahity, liparity, diabases, etc.), vulkanogenno-detrital, or piroklasticheskie (tuffs, volcanic a breccia), volcanic rocks.
  • VOLCANIC BAY, see. Utiura.
  • VOLCANIC ASH, product of crushing and dispersion by volcanic explosions of fluid or solid lavas. The dia up to 2 mm will consist of particles of a dust and sand.
  • VOLCANIC PLATEAU, in a central part Boreal p-va It is new. Zealand. An altitude of 200-700 m. It is combined by covers of lavas, above which huge cones operational and lost volcanoes - Ruapehu (2797 ì), Tongariro, Ngauruhoe, Egmont are hoisted. Geysers, fumaroly, hot mineral sources. Crowded earthquakes. It is a lot of lakes, including the largest in Oceania an eskar. Taupo. National parks - Tongariro, Urevera, Egmont.
  • VOLCANIC GLASS, the amorphous volcanic rock which is generatrix at fast congelation of a lava. Almost bodily composes volcanic glass, a pitch stone (pehshtejn), nerlit, a pumice, etc.
  • VULKANOGENNO-SEDIMENTAL, deposits of ores Fe, Mn, Cu, Zn, Pb, bauxites and the phosphorites, derivated at a deposition of products of volcanic eruptions at the bottom of ancient seas and oceans.
  • VULKANOGENNO-SEDIMENTAL, the rocks consisting of a volcanic and sedimental material. Among vulkanogenno-sedimentary rocks distinguish tuffs, tuffity, a jasper, some ore gland, manganese, phosphorites, etc.
  • VOLCANOLOGIES the INSTITUTE (WILLOWS) of the IED of the Russian Academy of Science, is built in 1963 in Petropavlovske-Kamchatka on the basis Laboratories of volcanology AN the USSR (Moscow), Kamchatka vulkanologicheskoj stations, the Kamchatka geologo-geophysical observatory of Siberian branch AN of the USSR and Pauzhetskoj the kontrolno-observation geothermal station. Probes on the modern terraneous and submerged volcanism, a geothermie, the forecast of volcanic eruptions and earthquakes. In 1991 from him the Institute vulkanologicheskoj geology and a geochemistry was secured.
  • VULKANOLOGICHESKOJ GEOLOGY AND the GEOCHEMISTRY the INSTITUTE of the Russian Academy of Science, is built in 1991 in Petropavlovske-Kamchatka on the basis several scientific subdividings of the Volcanology of institute. Probes of material structure of effusive rocks and structures of burning mountains.
  • VOLCANOLOGY, science about the causes of education of burning mountains, their development, a structure, structure of products of eruptions and regularities of disposition on a surface of the Earth. The first cramps on burning mountains fall into is grey. 1-st thousand up to n. e. See also Paleovulkanologija.
  • VULLENVEVER (Wullenwever) JUrgen (ok. 1492-1537), the burgher german Lubek; has headed in 1531 tumble, directed against patritsiata, has become (1533) burgomaster. Has conducted in city church reformatsiju. After restoration of an authority patritsiata it is executed.
  • WOLLONGONG (Wollongong), city in a southeast of Australia, pieces New JUzh. Wales. 238,2 thousand inhabitants (1990). Black and nonferrous machine industry, oil refining, a food-processing industry. Production of mineral coal.
  • VULMEN (Woolman) John (1720-72), the American priest and the writer. The writer of instructive tracts (including " Some speculations about possession of Negros ", 1754) and pithy "Diary".
  • VULSI Ò., see T.
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