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Browsing Геология России by Title
Now showing items 7020-7039 of 39195
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(1998)Compelling evidence now exists for the formation of Archean lode-gold deposits over a substantial range in metamorphic conditions and crustal depth. The commonality of ore-fluid isotopic and geochemical characteristics, ...
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(2002)An olivine grain from a peridotite nodule 9206 (Udachnaya kimberlite, Siberia) was investigated by TEM methods including AEM, HRTEM, SAED and EELS techniques. A previous study of the 9206 olivine sample revealed OH absorption ...
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(2003)The alteration products of cholesterol subjected to hydrothermal conditions have been analyzed by gas chromatography-mass spectrometry. Four sets of experiments were conducted at temperatures ranging between 150 and 300 ...
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(2000)The hydrous species geospeedometer is based on the homogeneous interconversion reaction between molecular H2O species and OH species in silicate melts and glasses. Here we report new data for the calibration of the ...
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(1996)The rate of goethite dissolution in the presence of acetohydroxamic acid, chosen to be representative of hydroxamate siderophores, was examined in order to understand the cycling of iron in soils. The surface chemistry is ...
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(1999)We test the hypothesis that a versatile strain of iron bacteria, Geobacter metallireducens, can metabolize Fe(III) when it is complexed to hydroxamate ligands. Pure cultures were grown under anaerobic conditions with, and ...
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(1998)A suite of more than 200 garnet single crystals, extracted from 150 xenoliths, covering the whole range of types of garnet parageneses in mantle xenoliths so far known from kimberlites of the Siberian platform and collected ...
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HYDROXYL IN CLINOPYROXENE FROM THE DEEP SUBDUCTED CRUST: EVIDENCE FOR H2O TRANSPORT INTO THE MANTLE (2003)Clinopyroxenes in eclogites from the deep subducted crust in the Kokchetav, Kazakhstan, ultra-high-pressure metamorphic terrane were found by infrared spectroscopy to contain up to 3020 ppm OH. These rocks were recrystallized ...
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(2004)From a total of 335 olivine crystal grains, crystallographically orientated platelets and, where possible, parallelepipeds were prepared, chemically analysed by electron microprobe, examined under the polarisation microscope, ...
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(2004)A series of clinopyroxenes from the lower crust and upper mantle beneath the Siberian platform was investigated by Fourier-transform infrared (FTIR) spectroscopy and transmission electron microscopy (TEM). The IR spectra ...
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(2004)On the Gumeshevsk deposit a massive metasomatite body is discovered, formed primarily by hydroxylellestadite. Thus the completing member of ellestadite mineral group is established (containing only 0.12% P2O5). Metasomatites ...
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(2000)The November 12, 1964, eruption on Shiveluch Volcano is used as an example to describe a mathematical technique for modeling the precursory seismicity of similar events. The technique is efficient in revealing empirical ...
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(2005)Much like reverse osmosis membranes, clays have been shown to exhibit reverse osmosis properties at high hydraulic heads. To determine if reverse osmosis was possible at lower hydraulic heads, potassium nitrate solutions ...
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(2004)The presented overview of hypergene metallogeny of the Urals is largely based on original data of the author. All bauxite, Co–Ni oxide–silicate, and high-grade ferromanganese our deposits, gold, platinum, and diamond ...
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(2001)A series of laboratory experiments has been conducted in order to elucidate the sediment-induced mixing processes accompanying riverine outflows; specifically, the discharge of a warm, fresh, particle-laden fluid over a ...
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(2004)New mapping and structural observations in the lower crust of the Josephine ophiolite provide insights into the geometry and kinematics of hypersolidus flow beneath an oceanic spreading center. The lower crust, defined ...
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(2004)The Kandygatai metamorphic block is situated within the Zharma strike-slip zone, which separates the Hercynides of the Zaisan and Caledonides of the Chingiz-Tarbagatai fold systems. Metapelites of the Kandygatai Complex ...
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(PANGAEA, 2010-10-12)
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(2003)We examine locations of hypocenters of large interplate earthquakes (M=<7.5) at subduction zones relative to their rupture areas to obtain a relation between the hypocentral depth and the seismic coupling coefficient, which ...
Now showing items 7020-7039 of 39195