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Browsing ELibrary by Title
Now showing items 8250-8269 of 21936
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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 ...
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(2004)An assemblage of Lower Eocene nummulitids is established here for the first time from the Sullukapian Formation, which has been referred to the Upper Paleocene. A new species, Nummulites akorpensis sp. nov., which was ...
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(2001)Based on a large part of a skeleton, a new species of the genus Otschevia (O. alekseevi) from the Volgian Stage (Dorsoplanites panderi zone) of the Volga Region near Ulyanovsk is described. The diagnoses of the family ...
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(1990)In detailed petrographic studies of the high-alumina rocks (garnet-sillimanite-cordierite-biotite-plagioclase-quartz schists and gneisses) that are widely developed in the oldest (more than 3.7 Ba), Upper Aldan group of ...
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(2000)Observations of seismic waves from explosions and earthquakes were used to develop a crustal seismic model beneath Avacha Volcano down to a 2̃0-km depth. Major discontinuities and compressional velocities were determined ...
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(2001)The roughness of the core–mantle boundary, on the scale of centimeters to tens of meters, is modelled using a cellular automata method. Square cells, of the size of grains of the mantle material, on a 2-D grid, can be in ...
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(2001)A thermal model of the Kirovograd young activation zone is correlated with geophysical and geological data. A hypothesis is proposed on endogenous conditions of the Kirovograd activation zone, the initial phase of rifting.
Now showing items 8250-8269 of 21936