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Browsing ELibrary by Title
Now showing items 11990-12009 of 21821
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(2003)High-pressure and high-temperature experiments have been conducted with a laser-heated diamond-anvil cell (LHDAC) to determine the partition coefficients for Ni and Co up to 42 GPa and around 2500 K. Comparison of the ...
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(2003)The effect of pressure upon hydrogen bonding in synthetic end-member clinochlore, (Mg5Al)(Si3Al)O10(OH)8, has been studied in situ by high-pressure micro-Raman spectroscopy in a moissanite-anvil cell to 26.5 GPa at 300 K. ...
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(2001)Experiments have been conducted with a multi-anvil apparatus on two natural chondrites in four different sample containers. Partition coefficients for Ni and Co between liquid Fe-Ni-S-alloy and liquid silicate (DNiLA/LS ...
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THE EFFECT OF PRESSURE-INDUCED SOLID-SOLID PHASE TRANSITIONS ON DECOMPRESSION MELTING OF THE MANTLE (1995)Pressure-release melting of the earth's mantle is thought to be an isentropic process. The intersection of an isentropic melting path with a solid-state phase transition affecting the residual minerals must result in some ...
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(1996)Property-salinity plots are commonly used in the interpretation of estuarine and coastal dissolved chemical distributions as well as in making estimates of fluxes to the open ocean. Previous work has explored the interpretation ...
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(2001)We investigate the effect of the lateral variation of seismic anisotropy on long-period surface waves, calculating synthetic seismograms for earth models with azimuthal anisotropy whose hexagonal symmetry axes are horizontally ...
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(1995)Numerical modelling indicates that the erosion of uplifted rift flanks at passive margins has a profound effect on offshore stratigraphic patterns. Flexural uplift, due to isostatic rebound in response to erosion, extends ...
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(2003)The partitioning behavior of Ni between olivine and silicate melt in S-bearing systems has been investigated using mid-ocean ridge basalts (MORBs). The Nernst Ni partition coefficient between olivine and silicate melt (DNi) ...
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(2003)The role of sample size in the estimation of geological strain, both finite strain (Rs) and that of the orientation of the finite strain ellipse (φs), is investigated for clastic sedimentary rocks. This study looks at four ...
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(2004)The apparent shear strength of rock discontinuities is considerably smaller than that of small scale samples. At the same time, the sliding behavior is characterized, in situ, by marked instabilities, with the typical ...
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(2002)We present a new technique in surface wave tomography that takes the finite frequency of surface waves into account using first-order scattering theory in a SNREI Earth. Physically, propagating surface waves with a finite ...
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(2004)Pure forsterite crystals were grown from hydrous melts using controlled cooling experiments at 2.0 GPa and varying the bulk Mg/Si ratio from 2.0 to 1.5. Oriented single crystals were then studied by polarised infrared ...
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(2001)The main effects of H2O on crystallisation of basaltic liquids are to decrease melt liquidus temperature and to suppress plagioclase crystallisation relative to olivine and clinopyroxene. Although MORB magmas contain small ...
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(2004)Eclogite of recycled slab origin has often been invoked in the source region of mid-ocean ridge and ocean-island basalts. Melts of this eclogitic material are expected to be enriched in incompatible elements including major ...
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(1997)We have developed a finite element model of convection in a spherical, axisymmetric shell that we use to simulate upwelling thermal plumes in the mantle. The finite element method provides the flexibility to include realistic ...
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THE EFFECT OF TEMPERATURE ON EXPERIMENTAL AND NATURAL CHEMICAL WEATHERING RATES OF GRANITOID ROCKS (1999)The effects of climatic temperature variations (5–35°C) on chemical weathering are investigated both experimentally using flow-through columns containing fresh and weathered granitoid rocks and for natural granitoid ...
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(2005)The abundance of 30 trace elements has been determined in the minerals of 16 well-equilibrated spinel lherzolite xenoliths by laser-ablation inductively-coupled-plasma mass-spectrometry (LA-ICP-MS). Major elements were ...
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(1998)The distribution of the elements Ni, Co, Mn, Cr, and V between liquid Fe-Ni-metal and magnesiowustite solid solutions is investigated at 9 GPa in the temperature range 1800-2400°C. The variation of starting material enables ...
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(2001)The Fe-FeS melt is thought to be the major candidate of the outer core material. Its viscosity is one of the most important physical properties to study the dynamics of the convection in the outer core. We performed the ...
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(1998)The goal of this study was to ascertain the nature of the Ar release mechanism(s) for a single, well characterized muscovite heated incrementally in vacuo: (1) at temperatures and time intervals typical of 40Ar/39Ar step ...
Now showing items 11990-12009 of 21821