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Browsing ELibrary by Title
Now showing items 8906-8925 of 21936
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(1996)New measurements on partitioning of platinum-group elements (PGE) Os, Ir, Ru, Pt, Pd, and Au between (Fe,Ni)-sulfide liquid and basaltic melt using low pressure, sealed silica glass tube, and controlled atmosphere methods ...
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(1995)The partitioning of rare earth elements (REEs) in calcite overgrowths precipitated from sea-water solutions under steady-state conditions was investigated experimentally using a constant addition technique. The composition ...
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(2000)Minerals with CaSiO3 composition were found as inclusions in diamonds, and are considered to be originally of perovskite structure. To constrain their genesis and consequently the extent of circulation of mantle material, ...
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PARTITIONING OF RARE EARTH ELEMENTS BETWEEN PHOSPHATE-RICH CARBONATITE MELTS AND MANTLE PERIDOTITES (1993)Near solidus equilibria in the system mantle peridotite-carbonate-phosphate doped with Ce and Yb have been studied at 20 kbar and 950C. Carbonatitic melts in this system may be quenched into homogeneous glasses. Such melts ...
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(1990)Studies of the behavior of the rare-earth elements (REE) in high-pressure metamorphism have established that the partitioning of REE between the pyroxenes and garnets in the eclogites of metamorphic rock complexes differs ...
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(2004)A series of high temperature experiments was undertaken to study partitioning of several highly siderophile elements (HSE; Ru, Rh, Pd, Re, Os, Ir, Pt and Au) between Cr-rich spinel, olivine, pyroxene and silicate melt. ...
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(2001)The partitioning of some moderately siderophile elements and Si between solid metal and liquid metal-sulfide in the Fe-S system at 1000 to 1400°C and low pressure has been investigated at minor abundances using EPMA, and ...
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(2003)Trace-element partition coefficients between plagioclase and coexisting glass/matrix have been determined for twenty-nine rhyodacite-rhyolite samples from nine volcanic centers. Strontium par-tition coefficients form two ...
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(2001)There is a paucity of experimental data on calcite precipitation from waters at low ionic strength and low ratios of Mg/Ca and Sr/Ca, using controlled and constant precipitation rates. Such data are particularly needed for ...
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(1999)The partitioning of highly siderophile elements (HSEs: Re, Os, Ir, Pt, Pd, and Au) between solid metal and liquid metal sulfide in the Fe-Ni-S system at 1000 to 1200°C and low pressure has been investigated at abundances ...
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(2003)Many experimental data demonstrate distinct differences between crystal-liquid partition coefficients Di measured under high temperature, anhydrous conditions and those determined at lower temperatures in the presence of ...
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PARTITIONING OF TRACE ELEMENTS BETWEEN RUTILE AND SILICATE MELTS: IMPLICATIONS FOR SUBDUCTION ZONES (2005)Mineral/melt trace element partition coefficients were determined for rutile (TiO2) for a large number of trace elements (Zr, Hf, Nb, Ta, V, Co, Cu, Zn, Sr, REE, Cr, Sb, W, U, Th). Whilst the high field strength elements ...
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(1999)The partitioning of transition elements (Sc, Ti, V, Cr, Mn, Co, Ni) between orthopyroxene (opx) and clinopyroxene (cpx) in carefully selected garnet peridotite, spinel peridotite and garnet websterite xenoliths was determined ...
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(2001)A model for the rotational behaviour of flow in bimineralic rocks based on the concept of a multiphase continuum is developed here. An additive relation with respect to the vorticity is assumed. The ideal linear viscous ...
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(2005)The southern Siberian loess, being a continuation of the Eurasian loess-belt, has provided one of the most complete terrestrial proxy records on the global past climate development. New high-resolution loess-paleosol ...
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(2005)In one form or another, geochronologists have been practicing thermochronology, the use of radioisotopic dating to constrain thermal histories of rocks and minerals, for over 40 years. Building from lessons learned over ...
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(2003)Shell fragments are important components of many Recent and fossil marine benthic ecosystems and can provide crucial information on past and present environmental conditions. Interpreting such fragments requires integrated ...
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(2001)The rate of taxic turnover of nearly 400 radiolarian species/subspecies is analyzed in order to document long term biotic change of plankton during the Middle Jurassic to Early Cretaceous (Aalenian to Aptian). The pattern ...
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(2000)The distribution of trace elements in zircon is typically heterogeneous, a result of processes operating during crystal growth. The spatial distribution and abundances of minor and trace elements in zircon from a compositionally ...
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(1996)A catalog of Japanese earthquakes was used to find some empirical patterns of seismicity before large (M ≥ 6.0) earthquakes in the region. These patterns were identified by the numerical modeling of sequences of seismic ...
Now showing items 8906-8925 of 21936