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Browsing ELibrary by Title
Now showing items 12306-12325 of 21936
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(2004)Variations in the mean temperature of the ocean, on time scales from millennial to millions of years, in the past and projected for the future, are large enough to impact the geochemistry of the carbon, oxygen, and methane ...
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(1987)There is a great deal of evidence to support the hypothesis that many granites and related volcanic rocks contain significant amounts of crystals that did not crystallize from a melt. These crystals are residual from the ...
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(2001)Carbon transformation along the Eurasian shelves in water of Atlantic origin is estimated. Nutrient, oxygen, and inorganic and organic carbon data were used in the evaluation. By comparing the relative deficit of the ...
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(2001)In this paper, we investigate to which degree information concerning the spatial patterns of remotely sensed soil moisture data are needed in order to improve discharge predictions from hydrological models. For this purpose, ...
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(1998)We propose that the fluid mechanics of magma chamber replenishment leads to a novel process whereby silicic magmas can acquire an important part of their chemical signatures. When flows of basaltic magma enter silicic magma ...
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(2004)After accretion and solidification of a “magma ocean”, the proto-atmosphere of the Earth is modeled to compose of 560 bar of H2O and 100 bar of CO2. The existence of a CO2-rich atmosphere in the early history of the Earth ...
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(1997)The incorporation of Pb into zircons grown from Pb-rich solutions was evaluated using three different approaches: (1) high-temperature growth of large crystals from Pb-silicate melts; (2) hydrothermal overplating of thin ...
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(1982)The behavior of U during the diagenetic formation of marine phosphorite has been modelled. The model examines a dissolution-reprecipitation replacement of skeletal hydroxyapatite, calcium carbonate and earlier generated ...
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(2000)A detailed zonation of the Induan Stage of northeastern Asia has been performed in sections in the eastern upper Yana region. It reveals a decrease in the volume of the Triassic System in the northern direction as a result ...
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(2004)Acetate and oxalate are simple organic ligands that occur naturally in surface waters, groundwaters, and soils; they may play a role in the transport of palladium in such environments. Mass transfer of Pd in surface ...
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(2002)We investigate the effects of convergence velocity and backstop geometry on the evolution of experimental viscous doubly-vergent orogenic wedges. Experiments are performed in a thermomechanical shortening box, using the ...
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(2001)There exists within glaciology a widely held assumption that basal sliding and bed deformation do not operate beneath cold-based ice and that their basal velocity is therefore zero, irrespective of bed conditions. Consequently, ...
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(1990)Infrared spectroscopy was used to determine the concentrations of molecular water and hydroxyl groups in hydrous rhyolitic, orthoclasic, jadeitic, and Ca-Al-silicate glasses synthesized by quenching of melts from elevated ...
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(2006)Carbon has been proposed as a potential light element in planetary cores, included in models of planetary core formation, and found in meteoritic samples and minerals. To better understand the effect of C on the partitioning ...
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(1998)Inverse solution is used to study the influence of continental water storage on polar motion. The difference between the total excitation of the annual wobble of polar motion and its atmospheric part is assumed to be caused ...
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(2004)Experimentally constrained calibrations of the incorporation of H2O and CO2 into cordierite as functions of P-T-a(H2O)-a(CO2) are integrated with KFMASH grids which define mineral-melt equilibria in pelites. This is used ...
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(2003)Variations in the atomic abundances of 53Cr, 92Zr, 98Ru, 99Ru, and 182W in meteorites and lunar samples relative to terrestrial values may imply the early decay of radioactive 53Mn, 92Nb, 98Tc, 99Tc and 182Hf, respectively. ...
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(2004)The position of the transition from spinel peridotite to garnet peridotite in a simplified chemical composition has been determined experimentally at high pressures and high temperatures. The univariant reaction MgCr 2O ...
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(1999)In order to explore possible quantitative relations between crystal field stabilization energy, CFSE, and partitioning behaviour of the 3d 6-configured Fe2+ ion, a suite of 29 paragenetic rock-forming minerals from 12 ...
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(2002)The influence of diet and atmospheric CO2 on the carbon isotope composition of shell aragonite and shell-bound organic carbon in the pulmonate snail Helix aspersa raised in the laboratory was investigated. Three separate ...
Now showing items 12306-12325 of 21936