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Browsing ELibrary by Title
Now showing items 939-958 of 21934
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(2005)We carried out an experimental study to characterize the kinetics of Ostwald ripening in the forsterite-basalt system and in the plagioclase (An65)-andesite system. Eight experiments were done in each system to monitor the ...
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(2003)To determine oxygen isotope fractionation between aragonite and water, aragonite was slowly precipitated from Ca(HCO3)2 solution at 0 to 50°C in the presence of Mg2+ or SO42-. The phase compositions and morphologies of ...
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(1997)The analytical technique for determining oxygen isotopic ratios of wairakite has been carefully examined. Channel water in wairakite was separated from its aluminosilicate framework by dehydration in vacuum at various ...
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(1999)Phase equilibria in the ternary system H2O-CO2-NaCl were studied at 800°C and 9kbar in internally heated gas pressure vessels using a modified synthetic fluid inclusion technique. The low rate of quartz overgrowth along ...
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(2004)Phase equilibria in the ternary systems H2O–CO2–NaCl and H2O–CO2–CaCl2 have been determined from the study of synthetic fluid inclusions in quartz at 500 and 800C, 0.5 and 0.9GPa. The crystallographic control on rates of ...
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(2001)The solubility of stibnite in gaseous hydrogen sulphide was investigated experimentally in the systems Sb2S3-S-H2S and Sb2S3-H2S at temperatures between 200 and 320°C (pressures of up to 200 bars). The concentrations ...
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(1997)Chemical diffusion of Pb and Sr has been measured in natural calcite under anhydrous conditions. The source of diffusants for the Sr and Pb diffusion experiments were SrCO3 and PbO powders, respectively. Experiments were ...
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AN EXPERIMENTAL STUDY OF THE EFFECT OF IRON ON MAGNESIOCHLORITOID-TALC-CLINOCHLORE-KYANITE STABILITY (2001)The influence of Fe on the reaction clinochlore+kyanite+magnesiochloritoid+talc (1) was determined experimentally as a function of pressure (1.6-2.6 GPa) and composition at 600 and 540 C. Analytical electron microscopy ...
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(1998)The exchange equilibrium was studied by reversal experiments as a function of temperature (650 ≤ T ≤ 1000 °C), pressure (10 ≤ P ≤ 20 kbar), and chemical composition. Experiments were performed in a piston-cylinder apparatus ...
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(2004)The abundance of metallic iron is highly variable in different kinds of chondrites. The precise mechanism by which metal fractionation occurred and its place in time relative to chondrule formation are unknown. As metallic ...
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(2002)Experiments were conducted to study the temporal evolution of feldspar crystallization kinetics during isothermal decompression. Pinatubo dacite was held at 780°C, 220 MPa, fO2 = NNO + 2, H2O-saturated conditions for an ...
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(2003)Sulfurization of carbohydrates has been suggested as an important mechanism for the preservation of organic matter. To study this process, different monosaccharides were sulfurized under laboratory conditions at relatively ...
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(1999)Reactive surface areas of Fontainebleau sandstone were measured as a function of porosity, permeability, and bulk fluid flow rate. Reactive surface areas were obtained by comparing the steady-state outlet Si concentration ...
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(2005)We have performed metal solubility and olivine–melt partitioning experiments to understand the behaviour of iridium, osmium and gold during crust–mantle differentiation. All experiments were performed metal-saturated, with ...
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(2002)The solubility of copper chloride in liquid-undersaturated HCl-bearing water vapor was investigated experimentally at temperatures of 280 to 320°C and pressures up to 103 bars. Results of these experiments show that the ...
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(2005)The sulfur content in basaltic melts coexisting with either sulfide or sulfate melts was determined experimentally. The experimental conditions were in the range of 1300–1355°C and 1·0–1·6?GPa, conditions appropriate for ...
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(1995)Experiments were conducted to determine the solubilities of H2O and CO2 and the nature of their mixing behavior in basaltic liquid at pressures and temperature relevant to seqfloor eruption. Mid-ocean ridge basaltic (MORB) ...
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(1995)Degassing processes in basaltic magmas rich in both water and carbon dioxide can be modeled using the solubilities of the endmember systems and the assumption of Henry's law. Suites of vapor-saturated basaltic melts having ...
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(2003)Experiments in the quartz-saturated part of the system KFMASH under fO2 conditions of the haematite–magnetite buffer and using bulk compositions with XMg of 0·81, 0·72, 0·53 define the stability limits of several mineral ...
Now showing items 939-958 of 21934