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ELibrary: Recent submissions
Now showing items 341-360 of 22407
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(2006)Pressure-Temperature- fO2 conditions and fluid compositions estimated for mineral parageneses from inclusions in diamonds, diamond-bearing and diamond-free xenoliths using a garnet-clinopyroxene-silica oxygen barometer ...
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(2006)Изучение рудных формаций, взаимоотношений их с магматическими образованиями, минералогических, геохимических особенностей и характера метасоматических изменений, проведенное под руководством Х.М.Абдуллаева, позволило ...
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(2006)Based on ammonites, Upper Kimmeridgian sediments are first established in the Crimean Mountains. The Kimmeridgian-Tithonian boundary recognizable in a continuous section is placed inside the Dvuyakomaya Formation of uniform ...
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(2006)The microfossils studied are discovered for the first time in the Riphean-Lower Vendian deposits, which have been recovered in 2002 by the Kel'tminskaya-1 deep parametric borehole in the Vychegda depression, the northeastern ...
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(2006)Clay subfractions (SFs) of <0.1, 0.1-0.2, 0.2-0.3, 0.3-0.6, 0.6-2 and 2-5 μm separated from Middle Riphean shales of the Debengda Formation are studied using the TEM, XRD, K-Ar and Rb-Sr isotopic methods. The oxygen and ...
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(2006)Evolution of tectono-magmatic processes in the Paleoproterozoic is divisible into four stages each controlled by its own type of endogenic activity. The critical moment in geological history was at the third stage onset ...
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(2006)A constant-volume piezometer immersed in a precision liquid thermostat was used to measure the densities of aqueous LiCl solutions from 0.129 to 15.498 mol kg- 1, 291.25 to 607.71 K, and 0.961 to 30.55 MPa. The total ...
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(2006)To resolve the problem of existence of the H-form of natrolite, the thermal decomposition of NH4-exchanged natrolite (as a precursor of the H-form) was studied by gas chromatography, IR spectroscopy and X-ray diffraction. ...
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(2006)An extensive, nearly continuous and hitherto unreported solid-solution series is observed in Sr-Na-REE titanates in a fenitized megaxenolith, Khibina alkaline complex, Kola Peninsula, Russia. These titanate minerals, related ...
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(2006)A progression from cuboid to octahedral growth has been observed in 16 natural diamonds from Yakutian kimberlites. X-ray and cathodoluminescence topography have revealed that the change in morphology of diamonds with cloudy ...
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(2006)Изучение меденосности верхнепермских отложений Вятско-Камской полосы и, в частности, Ныртинского полигона показало, что медные руды могут представлять практический интерес, если их рассматривать как комплексные. На Ныртинском ...
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(2006)The assessment of climate change factors includes a constraint of methane sources and sinks. Although marine geological sources are recognized as significant, unfortunately, most submarine sources remain poorly quantified. ...
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(2006)The interaction of graphite with (Fe,Ni)9S8 and FeS sulfide melts has been studied at P = 6.3-7.5 GPa and T = 1450-2200 °C in experiments with a duration from 2 to 65 h. It has been found that both pentlandite and pyrrhotite ...
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(2006)In the mid-1980s, it was concluded based on geochemical study that Th, Sc, La concentrations and ratios Th/Sc, La/Sc and Eu/Eu* did not wary significantly in the post-Archean time. It was impossible to judge about compositional ...
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(2006)The Lovozero alkaline massif is the largest of the world's layered peralkaline intrusions (~650 km2). We describe the evolution of clinopyroxene from the liquidus to the late residual stage throughout the whole vertical ...
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(2006)The crystal structures of the 1M and 2M polytypes of tyrolite have been solved from single-crystal X-ray diffraction data. The structure of tyrolite-1M [monoclinic, P2/c, a = 27.562(3), b = 5.5682(7), c = 10.4662(15) Å, β ...
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(2006)The East European Platform is underlain by Archaean and Proterozoic complexes of the East European Craton. In the southwest these are locally exposed in the Ukrainian Shield and the Voronezh Massif on either side of the ...
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(2006)Оксидные руды океана относятся к числу перспективных геолого-промышленных типов, интерес к которым в последние годы постоянно возрастает. Освоение этих образований требует решения сложных научных и практических проблем.
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(2006)A synthetic analogue, Ca(Ti 0.6Al 0.2Ta 0.16 Nb 0.04 )OSiO 4, of an aluminoan tantalian titanite previously described from Craveggia pegmatite (Piemonte, Italy) has been prepared by a ceramic synthesis technique and its ...
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(2006)Adsorption of Zn2+ at the rutile TiO2 (110)-aqueous interface was studied with Bragg-reflection X-ray standing waves (XSW), polarization-dependent surface extended X-ray absorption fine structure (EXAFS) spectroscopy, and ...
Now showing items 341-360 of 22407