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Browsing ELibrary by Title
Now showing items 9720-9739 of 21934
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(2001)A recent significant achievement in trace element modeling is the development of the congruent (eutectic) dynamic melting (CDM) model where only melt is generated. However, melting reactions in the mantle and crust often ...
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(1997)We examine the Tunguska Basin evolution by using two lithologic-stratigraphic sections along deep seismic sounding profiles and exploration wells. The tectonic analysis demonstrates that the subsidence of the basin was ...
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(1986)A theoretical model of clast fallout from convective eruption columns has been developed which quantifies how the maximum clast size dispersal is determined by column height and wind strength. An eruption column consists ...
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(2003)Laser-ablation ICPMS has become widely accessible as a powerful and efficient multi-element microanalytical technique. One of its key strengths is the ability to analyse a wide concentration range from major (tens of wt.%) ...
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(2002)Human societies have, in all ages, modified the original form of metals and metalloids in their living environment for their survival and technical development. In many cases, these anthropogenic activities have resulted ...
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(1999)The accuracy of and detection limits for trace element analysis by the proton microprobe were determined using a stainless steel sample Gk-19 and glass samples prepared from whole rock reference powders JA-1 andesite, JB-1a ...
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(2003)Single fluid inclusion analogues with known elemental composition and regular shape were analyzed for trace element contents by particle-induced X-ray emission (PIXE)-a nondestructive method for the analysis of single fluid ...
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(2001)An internal standard X-ray diffraction (XRD) analysis technique permits reproducible and accurate calculation of the mineral contents of rocks, including the major clay mineral families: Fe-rich chlorites + berthierine, ...
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(2002)Dredging and disposal of sediments onto agricultural soils is a common practice in industrial and urban areas that can be hazardous to the environment when the sediments contain heavy metals. This chemical hazard can be ...
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(1997)Quantum chemical calculations at the density functional level (B3LYP functional) with full geometry optimisation have been performed on the effect of protonation and of adsorption of alkali cations (Li+, Na+, K+, Rb+, and ...
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(2001)It has long been known that the solubilities of sulfide ore minerals in hydrothermal fluids results from the complexation of metals such as Cu, Zn and Fe by Cl and HS ligands (Seward and Barnes 1997). Complexation of heavy ...
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(2002)The structure of dioctahedral 2:1 phyllosilicates with different interlayer charge was studied theoretically using ab initio calculations. The standard Kohn-Sham self-consistent density functional method was used in the ...
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(2005)Trans-vacant and cis-vacant polymorphs of smectites and illites were distinguished by studying different cation substitutions in octahedral and tetrahedral sheets and in the interlayer. The standard Kohn-Sham self-consistent ...
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(2004)Interpretation and inversion of azimuthally varying nonhyperbolic reflection moveout requires accounting for both velocity anisotropy and subsurface structure. Here, our previously derived exact expression for the quartic ...
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(2001)A fast and accurate optical method to calculate quartz c-axis orientations using the rotating polarizer stage and standard thin sections is presented. c-Axis orientations are calculated for each pixel and Achsenverteilungsanalyse ...
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(1997)New quartz solubility measurements in pure water that approached equilibrium from undersaturation at 21, 50, 74, and 96°C were combined with critically selected quartz solubility data from the literature to create a revised ...
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(2000)The solubility of quartz in H2O-NaCl solutions was measured at 2, 4.35, 10 and 15 kbar and 500-900°C, and at NaCl concentrations up to halite saturation, usually greater than 75 wt.%. Quartz solubility was also measured ...
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(2001)The solubility of quartz and incongruent dissolution ('apparent solubility') of albite and diopside in H2O-NaCl and H2O-CO2 fluids have been determined at pressures up to 0.9 GPa (9 kbar) and temperatures of 500-900 °C. ...
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(2001)Quasi-spontaneous variations are those which appear as though they are spontaneous, but are in fact stimulated by an informational influence, conventionally called 'Z radiation'. An information influence is an influence, ...
Now showing items 9720-9739 of 21934