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Browsing ELibrary by Title
Now showing items 3986-4005 of 21934
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(1995)We have experimentally determined the equilibrium talc # enstatite + quartz/coesite + H2O to 40 kbar in the system MgO-SiO2-H2O (MSH) using both synthetic and nearly pure Mg end-member natural talc and other synthetic ...
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(2005)We have studied thermochemistry of the first hydration steps for Cl-, Br-, and I- in the gas phase both experimentally using high-pressure mass spectrometry (HPMS) and theoretically using density functional theory (DFT) ...
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(2002)A detailed, systematic experimental and theoretical study was conducted to investigate the effect of pressure on equilibrium D/H fractionation between brucite (Mg(OH)2) and water at temperatures from 200 to 600°C and ...
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(1998)Arsenate (AsO43-) is a common species in oxidizing aquatic systems and hydrothermal fluids, and its solubility and partitioning into different mineral phases are determined by the nature of AsO43- coordination, solution ...
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(2005)The deprotonation and iron complexation of the hydroxamate siderophore, desferrioxamine B (desB), and a model hydroxamate ligand, acetohydroxamic acid (aHa), were studied using infrared, resonance Raman and UV-vis spectroscopy. ...
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(2001)In order to elucidate the influence of carbon dioxide on the solvent capacity of water-cat-bun dioxide fluids with respect to noble metals, a combined experimental and thermodynamic study was carried out on the solubility ...
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(2000)Experimental investigations in the system albite-water have been carried out to evaluate the accuracy of a new procedure to determine major-element solubilities in fluid phases and water solubilities in melts. The system ...
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(2002)A shock experiment has been devised to produce large shear in a single crystal sample of olivine. The recovered sample exhibits macroscopic shear faults resembling shock veins in ordinary chondrites. Examination with ...
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(2006)We have performed an experimental study of the aqueous alteration of the Allende CV3 carbonaceous chondrite under highly oxidizing conditions, in order to examine the alteration behavior of Allende’s anhydrous mineralogy. ...
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(2001)Experiments were carried out on the aqueous fluidization behaviour of ignimbrite and the associated formation of fluid-escape pipes. The starting material was an ignimbrite that had been saturated with water under vacuum ...
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(2004)Uncertainty in future reservoir performance is usually evaluated from the simulated performance of a small number of reservoir realizations. Unfortunately, most of the practical methods for generating realizations conditional ...
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(1994)Fluorine distribution between (OH,F)-phlogopite and hydrothermal fluid has been experimentally investigated at 500–700°C and 1–4 kbar. Initial phlogopite compositions and HF concentrations in the HF-H2O fluid were varied ...
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(2000)Experiments in the systems diopside-albite (Di-Ab) and diopside-albite-dolomite (Di-Ab-Dmt), doped with a wide range of trace elements, have been used to characterise the difference between clinopyroxene-silicate melt and ...
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(2000)We have studied interactions between bubbles of two distinct size classes in rhyolite melts experimentally decompressed between 200 and 80 MPa. The first set of `decompression' bubbles has a size range (Rdec) of 1-11 mum ...
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(2004)Major and trace element mineral/melt partition coefficients are presented for phases on the liquidus of fertile peridotite at 23–23.5 GPa and 2300 °C. Partitioning models, based on lattice-strain theory, are developed for ...
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(2004)This study assesses the effect of decompression rate on two processes that directly influence the behavior of volcanic eruptions: degassing and permeability in magmas. We studied the degassing of magma with experiments on ...
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(1999)Numerical models predict that rapid ascent of hydrous magma can lead to supersaturation of dissolved volatile constituents, possibly leading to explosive eruption. We have performed controlled decompression experiments to ...
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(1996)Partial melting experiments were conducted on a natural high-alumina basalt from the Higashi-Izu volcanoes (47.4 wt.% SiO2; 8.3 wt.% MgO) with 1 and 2 wt.% total H2O at 0.5 and 1 GPa, 1125-875oC. The partial melts produced ...
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(2001)Synthesis piston-cylinder experiments were carried out from 2.0 to 4.5 GPa and 850 to 1150°C in order to determine phase and melting relations in a model composition for subducted crust (K2O–CaO–MgO–Al2O3-SiO2–H2O). As ...
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EXPERIMENTAL CONSTRAINTS ON MAJOR AND TRACE ELEMENT PARTITIONING DURING PARTIAL MELTING OF ECLOGITE (2002)Isobaric partial melting experiments were performed on an Fe-free synthetic composition to simulate partial melting of subducted oceanic crust. Nominally anhydrous experiments at 3.0 GPa yielded melts in equilibrium with ...
Now showing items 3986-4005 of 21934