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Now showing items 5620-5639 of 39375
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(1998)The paper summarizes data on fluorine concentrations in magmatic silicate melts (833 analyses of fluorine and other major components from 69 publications). This data was obtained in studies of glasses from homogenous melt ...
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(1989)The study of metal content of birch sap at several ore deposits has shown that such sap contains anomalously high concentrations of metals. The sensitivity of modern analysis makes it possible to determine some ore indicator ...
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(2002)Anhydrous iron, aluminum and fluorine-rich paralavas were found in the burned spoil-heaps of the Chelyabinsk coal basin, Russia. The rocks contain tridymite, anorthite, ferroan fluorine-bearing cordierite, fluorine-bearing ...
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(2004)This study is devoted to accessory fluorite in granites of the Western Massif of the Khangilai pluton, eastern Transbaikalia. This mineral is widespread in Ta-Nb-bearing granites of the Orlovskoe ore deposit. Tantalum-bearing ...
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(2003)A huge fluorite deposit at Voznesenka in the Khanka massif, Far East Russia is concluded to have formed at ca. 450 Ma in Late Ordovician time based on the K-Ar ages for Li-micas in the fluorite ore and greisenized leucogranite ...
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(2001)The article discusses the formation and properties of fluorite in the Voznesensk and Pogranichnyi deposits (the Voznesensk ore district, Far East region, Russia). Evolution of the postmagmatic process was mainly influenced ...
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(2004)Recent experimental evidence is used to assess the conditions under which fluorite forms an early crystallising phase in silicic magmas. Fluorite solubility primarily depends on the (Na + K)/Al balance in the coexisting ...
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(2003)Fluorvesuvianite was found in the abandoned Lupikko iron mine, Pitkäranta, Karelia, Russia. It occurs in cavities of chloritized diopside skarn, as radiating aggregates of acicular crystals in calcite. Crystals (up to 1.5 ...
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(2004)A simple flux balance model with a diffusive, evaporative boundary layer indicates that the time constant (characteristic time) for approach to oxygen isotope steady state in the body fluid of land snails is ~19 min or ...
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(PANGAEA, 2017-03-07)
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FLUXES AND SOURCES OF VOLATILES DISCHARGED FROM KUDRYAVY, A SUBDUCTION ZONE VOLCANO, KURILE ISLANDS (1998)The Kudryavy volcano, a 996-m-high basaltic-andesite cone on the northeastern shore of Iturup Island in the Kuriles, erupted last in 1883 and has since been in a persistent state of high-temperature, >900°C fumarolic ...
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(2003)Recent discoveries define a global scale fluid reservoir residing within the uppermost igneous oceanic crust, a region of seafloor that is both warm and may harbor a substantial biosphere. This hydrothermal fluid reservoir ...
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(Федеральное государственное бюджетное учреждение науки Институт земной коры Сибирского отделения Российской академии наук, 2016)We have compiled and analyzed earthquake focal solutions for the territory of Mongolia and its surroundings in order to reveal a spatial variability of stress orientation and stress regimes of the crust. According to the ...
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(1991)It has been shown that any modification of the fold test leads to a definite conclusion about the magnetization nature if several basic assumptions are observed and the statistical test itself is correctly formulated. It ...
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(2001)Nucleation and development of microrelief and fragmentation of coating under tensile extension of polymer films coated with a thin rigid layer is studied, and the mechanisms responsible for the development of both types ...
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(2002)Hypervelocity impacts of cosmic projectiles larger than ˜200 m diameter are capable of forming complex craters on Earth. At these craters, shock loading, shock damage, and excavation flow are followed by a gravity-driven ...
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(2004)The extent to which the leaves of woody dicots encode in their physiognomy the climatic conditions that exist during dormancy was tested by sampling 20 sites along an approximately west-east transect across European Russia, ...
Now showing items 5620-5639 of 39375