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Browsing ELibrary by Title
Now showing items 4156-4175 of 21768
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(2004)Formation of aqueous aluminate-borate complexes was characterized at 25°C using 27Al NMR spectroscopy, and at 50–200°C via measurements of gibbsite and boehmite solubility in the presence of boric acid. 27Al spectra performed ...
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(2002)Textural development of igneous rocks in the late stage of crystallization was experimentally studied using the diopside-anorthite and diopside-forsterite-anorthite systems. Isothermal, cooling, and heating experiments ...
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(1990)The author have already investigated the interrelationship of processes of subsolidus metasomatic preparation of rocks and fluid interaction in the mafic-ultramafic-alkalic series. The results presented below describe ...
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(2000)In this article we report the results of 3D ultrasonic experiments on Rayleigh wave scattering by a narrow vertical anisotropic slab. The experimental model was built from two rectangular isotropic blocks with a narrow, ...
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(2003)The rate and mechanism of zircon coarsening in quartzite ±H2O at 1.0 GPa and 1000 °C were characterized by performing time-series experiments in a piston-cylinder apparatus. Anhydrous experiments show no significant growth ...
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(2003)Increasing temperature causes fading of fission tracks (FTs) in minerals, which has been quantified by many laboratory heating experiments in atmosphere. In order to elucidate whether or not FT annealing at hydrothermally ...
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(2004)Isotopic fractionation of oxygen and hydrogen in water caused by gas hydrate formation was investigated experimen- tally. Two different gas hydrates in structures, Structure I hydrate and Structure II hydrate, were formed ...
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(2004)When a hot basaltic magma is emplaced into continental crust or a pre-existing silicic magma chamber, the processes of assimilation with fractional crystallization (AFC) are likely to control the liquid line of descent of ...
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(1997)We conducted the first systematic experiments over a pressure range of 0.5 to 20.0 kbar, at temperatures of 200 to 350°C, and run durations of #2, #4, and #7 days to investigate the influence of pressure on vitrinite ...
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(2001)A total of 34 solubility experiments using the ''model''-pelite mineral assemblage microcline + low albite + andalusite + quartz were performed at 600°C and 0.2 GPa over a total chloride range of 0.03-2.9 molal. The ...
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(2001)The subject of experimental tectonics is the study of geodynamic processes by means of laboratory scale models. The first roughly scaled experiments were performed by Sir James Hall about two centuries ago, in the intellectual ...
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(1989)There are two possible approaches to the study of nonlinear phenomena. The first is to gear the observation system to the observation of nonlinear effects (multiple harmonics, sum and difference harmonics, and so on) that ...
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(1995)We have performed experiments aimed at testing the calibration of oxygen barometers for the garnet peridotite [garnet (Gt)-olivine (Ol)-orthopyroxene (Opx)] phase assemblage. These involved equilibrating a thin layer of ...
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(1997)We present results of an experimental study to determine the nature of minimum to near-minimum melt compositions in equilibrium with upper mantle peridotite mineralogy at 1 GPa. We confirm earlier conclusions that anhydrous ...
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EXPERIMENTALLY BASED WATER BUDGETS FOR DEHYDRATING SLABS AND CONSEQUENCES FOR ARC MAGMA GENERATION (1998)Phase diagrams of hydrous mid-ocean ridge (MOR) basalts to 330 km depth and of hydrous peridotites to 250 km depth are compiled for conditions characteristic for subduction zones. A synthesis of our experimentally determined ...
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(2005)Fluid-saturated subsolidus experiments from 2·0 to 6·5 GPa, and from 680 to 800°C have been performed on three model peridotites in the system Na2O-CaO-FeO-MgO-Al2O 3-SiO2- H2O (NCFMASH). Amphibole and chlorite coexist up ...
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(2002)An earlier version of the phlogopite geofluorimeter and experimental data on the fluorine distribution between a variety of mica end members were used to develop biotite, Li-mica, and muscovite geofluorimeters, which take ...
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(2004)Modern bone and enamel powders have reacted at 301 K with 13C- and 18O-labelled waters under inorganic and microbial conditions. The aim of the study is to investigate the resistance of stable isotope compositions of ...
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(1996)A new method for modeling fractional crystallization processes that involve olivine (ol), plagioclase (plag) and augite (aug) is presented. This crystallization assemblage is the major control on the chemical variations ...
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(2003)Results of thermal convection experiments in a rotating fluid with a geometry similar to the Earth's core tangent cylinder are presented. We find four different states. In order of increasing Rayleigh number, these are: ...
Now showing items 4156-4175 of 21768