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Browsing ELibrary by Title
Now showing items 4224-4243 of 22187
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(2005)The subsurface mobility of Np is difficult to predict in part due to uncertainties associated with its sorption behavior in geologic systems. In this study, we measured Np adsorption onto a common gram-positive soil ...
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(1996)Melting temperatures of biotite-orthopyroxene-quartz assemblages were determined experimentally using biotites with various Fe-contents in the system KAlO2-MgO-FeO-SiCO2-H2O, in the pressure range 100-500 MPa and under the ...
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(1998)The solubility of sulfur in gaseous hydrogen sulfide has been studied in the H2S-S system. Experiments were carried out at temperatures between 50 and 290°C and pressures up to 200 bars. The experimentally determined ...
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(2004)The Earth's magnetic field is generated by motions in the liquid part of the Earth's core. These motions can be related to thermal or gravity convection and the precession of the Earth's axial rotation. At present seismology ...
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(2002)An experimental study of the CaMgSi2O6-Ca3Al2Si3O12-K2Mg(CO3)2, CaMgSi2O6-Mg3Al2Si3O12-K2Ca(CO3)2 and CaMgSi2O6-KAlSi2O6 joins of the carbonate-silicate system CaMgSi2O6-(Ca,Mg)3Al2Si3O 12-KAlSi2O6-K2(Ca,Mg)(CO3 )2 was ...
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(2002)In-situ observations of transmitted-light experiments of syntaxial vein growth during lateral fluid flow in a simulated fracture show a decrease in growth rate towards the downstream end. As a consequence, the fracture is ...
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(1998)The stability of aqueous complexes formed by Si and Ge with carboxylic acids (acetic, salicylic, oxalic, citric, tartaric) and phenols (phenol and catechol) has been investigated from 25 to 90°C via solubility and ...
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(2000)In order to examine the effects of Bacillus subtilis on rates and extents of gibbsite dissolution, we conducted batch-type dissolution experiments with viable, non-viable, and no bacteria. Dissolved Al and organic carbon ...
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(1997)New experimental data are presented for the Fe-Mg exchange between garnet and biotite in the temperature range 600-800 8C at 0.2 GPa. The Fe-Mg-Al mixing properties of biotite were evaluated and the garnet-biotite ...
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(1999)Kaolinite was hydrothermally precipitated starting from amorphous aluminosilicates, with Si/Al ratio from 1.8 to 0.76, at temperatures of 150, 175, 200, 225, and 250°C, at time periods varying from 6 h to 60 days. The ...
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(2003)Organic acids and acid anions occur in substantial concentrations in many aqueous geologic fluids and are thought to take part in a variety of geochemical processes ranging from the transport of metals in ore-forming fluids ...
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(2001)Interaction between plagioclase amphibolite and synthetic glass of haplogranitic composition in the presence of aqueous fluid was studied experimentally at 800-950°C and 7 kbar. Amphibolite is replaced by granite with the ...
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(2000)Experiments ranging from 2 to 3 GPa and 800 to 1300°C and at 0.15 GPa and 770°C were performed to investigate the stability and mutual solubility of the K2ZrSi3O9 (wadeite) and K2TiSi3O9 cyclosilicates under upper mantle ...
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(2000)In this study, we investigate the adsorption of Bacillus subtilis onto the surfaces of two minerals, corundum and quartz, as a function of time, pH, ionic strength, and bacteria:mineral mass ratio. Experimental results ...
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(2000)Flood basalt provinces may constitute some of the most catastrophic volcanic events in the Earth's history. A popular model to explain them involves adiabatic ascent of plumes of anomalously hot peridotite from a thermal ...
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(2004)Conclusions: (1) The results of the study of phase relations in the diopside-calcium Eskola molecule system have made it possible to plot a phase diagram for the diopside-calcium-CEM system at 3.0 GPa. (2) The new phase ...
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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 ...
Now showing items 4224-4243 of 22187