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Browsing ELibrary by Title
Now showing items 8244-8263 of 21934
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(2004)Two infrared (IR) spectral types are discerned in cassiterites with OH defect concentrations ranging from several wt. ppm H2O in synthetic melt-grown samples up to 0.017 wt.% in natural samples of hydrothermal origin. ...
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(2003)The incorporation of hydrogen into the coesite structure was investigated at pressures ranging from 4.0–9.0 GPa and temperatures from 750–1300 °C using Al and B doped SiO2 starting materials. The spectra show four sharp ...
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(2004)Oil- and gas-bearing basins of the World Ocean spreading to the continental shelf and foothill are considered. Large hydrocarbon resources, including oil pools have been discovered in the deep-water basins. The basins are ...
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(2003)Resistivity sounding technology is applied to the characterization of oil polluted areas. It includes the analysis of the model of oil pollution as a low resistivity zone, the field study technique, advanced data processing, ...
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(2001)The chemical composition of oil shales from caldera lakes facies, as well as the carbon and oxygen isotope composition of rock-forming carbonates and sulfur isotope composition of pyrite from fine veinlets have been studied. ...
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(2003)The 2.45-Ga fluvial quartz arenites and conglomerates of the Matinenda Formation at Elliot Lake, Canada, contain evidence for two episodes of oil migration with entrapment of oil-bearing fluid inclusions. The first episode ...
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(2006)The Menilite Shales (Oligocene) of the Polish Carpathians are the source of low-sulfur oils in the thrust belt and some high-sulfur oils in the Carpathian Foredeep. These oil occurrences indicate that the high-sulfur oils ...
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(1988)Oil flows, sometimes fairly intensive, were observed in many exploratory wells drilled in middle Paleozoic carbonates of the Paleozoic Nyurol'skiy sedimentary basin, located in the southwestern part of the Tomsk region and ...
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(1988)This study looks at the nature and tectonic position of the Protogaean deposits in the Tien Shan system. It confirms the view that old endogene ore mineralization in the polycyclic Tien Shan is relatively poorly developed, ...
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(1989)The Cenoceras fauna of the Upper Triassic Notal basins has been considered the oldest, which gave rise to all other younger Nautilina. It is the only Triassic genus that crossed the Triassic-Jurassic boundary and survived ...
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(1998)This article presents the Oligocene and lower Miocene diatom zonation for the North Pacific. The data obtained in Leg 145 of the Oceanic Drilling Program (ODP) allowed a subdivision of Oligocene and lower Miocene deposits ...
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(1998)Planktonic foraminifers and calcareous nannoplankton were first recorded along with benthic foraminifers in the Upper Paleogene section of the Kronotskii Peninsula, eastern Kamchatka. The fauna permits the assignment of ...
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(1995)Bond distances, vibrational frequencies, gas-phase energetics, and proton affinities for various thioarsenite molecules and ions are predicted from molecular orbital theory and used to interpret EXAFS and Raman spectra of ...
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(1995)Bond distances, vibrational frequencies, gas-phase energetics, and proton affinities for various thioarsenite molecules and ions are predicted from molecular orbital theory and used to interpret EXAFS and Raman spectra of ...
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(1988)Natural glasses are most informative for interpreting processes of ordering and crystallization of magma. Glassy rocks are formed under conditions that are far from being in equilibrium, because vitrification occurs upon ...
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(2004)Redox-condition of stratified ultramafite infusions is estimated by the modern methods of oxythermobarometry. Olivine-chromespinel equilibrium of ultramafites of the Ioko-Dovyrensk's stratified massive is studied. Temperature ...
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(1989)The finding of porphyritic phenocrysts of rock-forming materials in completely crystallized ultramafic rocks is uncommon, and each such find is therefore of considerable interest. Olivine and clinopyroxene phenocrysts were ...
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(2003)Empirical expressions were derived to describe the relationship between the temperature and pressure of olivine-orthopyroxene-melt equilibrium and melt composition. The input data array included analyses of melts in ...
Now showing items 8244-8263 of 21934