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Browsing ELibrary by Title
Now showing items 12010-12029 of 21934
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(2004)Numerous researchers have obtained estimates of slip-weakening distance, Dc, and fracture energy for recent earthquakes. Dc, is often observed to be a significant fraction of the total slip and tends to correlate with total ...
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(2000)In situ atomic force microscopy (AFM) experiments have provided information about the effect of Ba2+ on crystal growth of calcite {1014} surfaces. The microtopographic features observed have been interpreted by considering ...
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(1991)The stability of pargasitic amphibole in the upper mantle is a function of water content and bulk rock composition, and under water-undersaturated conditions, the stability of amphibole controls the solidus position. ...
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(2003)The effects of Cd on the adsorption of an aquatic fulvic acid (FA) to the surface of Bacillus subtilis were investigated from pH 2.5 to 7.0, at fixed ionic strength (0.1 M NaClO4) and at ambient temperature (~22 °C). Cd ...
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(2006)Recent studies of uranium(VI) geochemistry have focused on the potentially important role of the aqueous species, CaUO2 (CO3)32- and Ca2 UO2(CO3)30(aq), on inhibition of microbial reduction and uranium(VI) aqueous speciation ...
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(2001)In this paper we develop a simple theoretical model to explain two of the most important observations about trace element partitioning. The first of these is the apparent dependence of crystal-melt partition coefficients ...
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(2002)The effect of standard processing techniques on the δ13C value of plant tissue was tested using species representing the three photosynthetic pathways, including angiosperms and gymnosperms within the C3 taxonomic division. ...
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(2003)Biotite is one of the most common minerals dated by the 40Ar-39Ar method. It frequently shows K contents below the expected stoichiometric value, suggesting the presence of low-K impurities. The most common low-K alteration ...
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(1998)To examine the effect of clay minerals on diasterane/sterane ratios, the mineral compositions of three sample sets of sedimentary rocks displaying a wide range of diasterane/sterane ratios were analysed quantitatively. ...
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(1997)The stable oxygen isotope composition of the aragonitic skeleton of hermatypic corals is a potential archive of paleotemperature and rainfall data. Biological processes also influence coral δ18O although it has been difficult ...
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(2006)The effect of compression on noble gas solubility in silicate melts is still badly understood due to a lack of theoretical guidance. In the experimental literature, noble gases dissolving in liquid silicates are found to ...
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(1998)This study investigates the influence of thermal convection planform geometry on the pattern of surface deformation in a dynamic model of plate-mantle coupling. The lithosphere is viewed as a distinct rheological layer and ...
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THE EFFECT OF CR ON THE SOLUBILITY OF AL IN ORTHOPYROXENE: EXPERIMENTS AND THERMODYNAMIC MODELLING (2000)The partitioning of chromium and aluminium between coexisting orthopyroxene and spinel in equilibrium with forsterite in the system MgO-Al2O3-SiO2-Cr2O3 (MAS-Cr) has been experimentally determined as a function of temperature, ...
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(2004)Chromium as Cr3+ substitutes for octahedrally coordinated Al in upper-mantle minerals, thereby reducing the activity of Al2O3 in the system and hence the concentration of Al2O3 in partial melts. The effect of Cr2O3 on melt ...
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(2004)Chromium as Cr3+ substitutes for octahedrally coordinated Al in upper-mantle minerals, thereby reducing the activity of Al2O3 in the system and hence the concentration of Al2O3 in partial melts. The effect of Cr2O3 on melt ...
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(2004)Chromium as Cr3+ substitutes for octahedrally coordinated Al in upper-mantle minerals, thereby reducing the activity of Al2O3 in the system and hence the concentration of Al2O3 in partial melts. The effect of Cr2O3 on melt ...
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(2002)The effect of crystal anisotropy on wetting angles of equilibrium silicate melts on crystal faces of spinel, diopside, enstatite and olivine has been determined experimentally by the sessile melt drop technique. The ...
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(2006)Comparison of measured far-from-equilibrium dissolution rates of natural glasses and silicate minerals at 25 °C and pH 4 reveals the systematic effects of crystallinity and elemental composition on these rates. Rates for ...
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(2003)In this study, we performed silica precipitation experiments with the cyanobacteria Calothrix sp. to investigate the mechanisms of silica biomineralization. Batch silica precipitation experiments were conducted at neutral ...
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(2003)We conducted a series of sand-box models shortened asymmetrically above a frictional-plastic decollement to study the influence of amount and sense of the decollement dip on the geometry and kinematics of accretionary ...
Now showing items 12010-12029 of 21934