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Browsing ELibrary by Title
Now showing items 4500-4519 of 17228
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(1995)After conversion of water to H2 gas with zinc for DH ratio determination, hydrogen gas can be absorbed by the zinc during cooling, resulting in H isotope fractionation. Thermal release and subsequent DH ratio determination ...
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(1996)Активность H2O в концентрированных NaCl р-рах измерялась при 600-900°C и 2-15 кбар и при концентрациях NaCl до насыщения по галиту при снижении равновесной дегидратации в бинарной системе синтетических брусит-периклаз. ...
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(2002)We present experimental results constraining water activity in H2O-N2 fluids containing 40–90 mol% water at pressures of 6–13 kbar and temperatures of 680–840 °C. In the experiments, the displacement of the brucite dehydration ...
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(1996)A total of 145 inclusions, trapped and isolated in Mg-rich olivine phenocrysts (Fo0.87–0.94) from basalts and ultramafic lavas, and representing the most primitive mantle melts known, have been analysed by ion microprobe ...
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(2000)H2O diffusion plays a major role in bubble growth and volcanic eruption. We report a comprehensive study of H2O diffusion in rhyolitic melts and glasses. This new study and previous investigations together cover a wide ...
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(1997)Coral skeletons contain relatively little organic material and inorganically precipitated carbonate cement, although these quantities are enough to bias geochemical measurements. Preliminary treatment is therefore often ...
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(1987)On a cryogenic investigation solid H2S was successively observed after freezing CO2 in water-poor fluid inclusions in halite of Cambrian Siberian salts. Melting of a H2S solid phase occurs at nearly eutectic temperatures ...
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(2001)The high field strength elements (HFSE) play a critical role in the interpretation of chemical variation within subduction-related magmas by providing an assumed mantle-dominated 'baseline' from which enrichments in many ...
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(1999)Standard partial molal thermodynamic parameters for the aqueous chlorinated-ethylene species, perchloroethylene (PCE), trichloroethylene (TCE), 1,1-dichloroethylene (1,1-DCE), cis-1,2-dichloroethylene (cis-1,2-DCE), ...
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(2001)Extension of Ar-Ar methodology has been used to determine mineralisation ages from mica inclusions and to simultaneously evaluate the noble gas and halogen composition of inclusion fluids within irradiated quartz vein ...
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(1989)The role of volatiles in island-arc magma generation is widely discussed in the geologic literature. Two of the most important volatile mineralizers are fluorine and chlorine, whose principal accumulator minerals in igneous ...
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(2003)We describe the structure of a listric growth fault system from SE Asia, using high-resolution, 3-D seismic data. The fault system shows systematic changes in geometry and kinematics that are sympathetic with along-strike ...
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(1996)The structure of haploandesitic magma was modeled via in situ, high-temperature Raman spectroscopy along the join K2Si4O9-K2(KAl)4O9 from 25 to 1236°C. These glasses and melts consist of Q^4, Q^3, and Q^2 structural units. ...
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(2002)Powder infrared spectra of perovskites across the CaTiO3-SrTiO3 solid solution have been collected at room temperature for the range 20–700 cm−1. Frequency, intensity, and line broadening parameters vary with a pattern ...
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(2003)Dicynodont therapsids have long played an important role in global Late Permian and Triassic biostratigraphy, including recent studies of the effects of the extinction at the Permian-Triassic boundary on terrestrial ...
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(2000)Design seismic forces depend on peak ground acceleration (PGA) values and on the shape of response spectra (RS) dictated by building codes or that need to be evaluated on a site-specific basis. The PGA values and RS strictly ...
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(2001)The heat capacities of 27 glasses have been determined from room temperature to temperatures corresponding to supercooled liquid behavior. The investigated compositions are based on a haplogranite (near the 2-kbar pH2O ...
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(1999)Six members of the annite-siderophyllite join were synthesized in a three step process - crystallization of biotite from gels, decomposition of the fine-grained biotite under oxidizing conditions and resynthesis of Fe-Al ...
Now showing items 4500-4519 of 17228