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Browsing ELibrary by Title
Now showing items 8886-8905 of 21936
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(1999)Volumetric measurements have been conducted on 7 Ni- and Co-containing sodium disilicate liquids within a compositional range varying from 0 to 9 mol% of NiO and from 0 to 23 mol% of CoO and over a large temperature interval ...
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(1997)Natural monazites of different grain sizes were treated experimentally under hydrothermal conditions and their U-Pb isotope systematics measured before and after the runs. Runs were carried out with monazite grain size ...
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(1999)Partial stabilization of Fe(II) in chemically reduced smectite, which normally readily under- goes reoxidation in air, was achieved. The purpose of this study was to determine if Fe(II) can be stabilized in reduced smectites ...
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(1996)A 1430 m deep station in the Norwegian Sea (Voering Plateau) was occupied five times between May 1986 and February 1987 to investigate the seasonal variation in sediment mixing rates. Chernobyl-derived radiocesium, identified ...
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(2002)We have developed a new theoretical model of an eruption column that accounts for the re-entrainment of particles as they fall out of the laterally spreading umbrella cloud. The model illustrates how the mass flux of ...
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(2001)Two clay-rich coastal sediment samples have been characterised together with three pure clays identified as major components of the sediment samples. The mineralogy of the sediments was determined by X-ray diffraction, and ...
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(2001)Recent studies of the vertical flux of organic matter into the deep ocean have prompted the search for key organic compounds (biomarkers) as tracers for its production, flux and burial into the sediment.Particulate matter ...
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(1990)The authors studied the particle size of gold in the cryogenic oxidation zone of gold-sulfide and gold-quartz mineralization and in the associated secondary lithogeochemical dispersion halos in bald-peak country. Frost ...
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(2004)Activities of particulate and dissolved 234Th and concentrations of particulate organic carbon (POC) were measured in the northwestern North Pacific in winters and springs. The export fluxes of POC from surface waters were ...
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(1997)Partition of organic solutes between oils and water in the subsurface is an important geochemical process occurring during petroleum migration and reservoiring, during water washing, and during petroleum production. Currently ...
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(2000)Partition coefficients (D) for Nb and Ta between rutile and haplogranite melts in the K2O-Al2O3-SiO2 system have been measured as functions of the K2O/Al2O3 ratio, the concentrations of Nb2O5 and Ta2O5, the temperature, ...
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(1988)There have been no experimental or theoretical determinations of the partition coefficients of Sn(II) and SN(IV) in magma systems. In the present article these are estimated by analyzing the partition coefficients of ...
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(1995)The partitioning of Si, Mg, and Ca in major concentrations, and Al, Ti, Sc and Sm in minor concentrations among MgSiO3 perovskite, CaSiO3 perovskite, superphase B -Mg10Si3O14[OH,F]4, and melt containing H2O and fluorine, ...
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(1995)Partition coefficients between a synthetic andesite melt and 1.5 and 3.0 molal (m) NaCl-H2O fluids have been measured at 1.5-2.0 GPa and 1250°C. Use of the double-capsule method allowed collection of silicate glass and of ...
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(1997)The knowledge of rare-earth element (REE) and high field-strength element (HFSE) partitioning between minerals such as amphibole, pyroxenes or garnet and tonalitic liquids is essential to understand where and how tonalitic ...
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(2000)Experimental studies of the element distribution between carbonatite melts and hydrous fluids are hampered by the fact that neither the fluid nor the melt can be isochemically quenched in conventional high-pressure vessels. ...
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(1997)This study investigates the effects of variations in the fugacities of oxygen and sulfur on the partitioning of first series transition metals (V, Cr, Mn, Fe, Co, Ni, and Cu) and W among coexisting sulfide melt, silicate ...
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(1997)Magnesium-normalised nickel, cobalt and manganese partition coefficients (Kd-Ni, Kd-Co, and Kd-Mn) between silicate perovskite and periclase have been measured experimentally in multi-anvil press and diamond-anvil cell ...
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(1996)Partitioning of Ni, Cu, and Pt-group elements (Ir, Rh, Pt, Pd) between monosulfide solid solution (Mss) and sulfide liquid has been investigated in the Fe-Ni-Cu-S system at 1000 and 1100oC and one atmosphere pressure. The ...
Now showing items 8886-8905 of 21936