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Browsing ELibrary by Title
Now showing items 8579-8598 of 21879
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(2002)The results of numerical treatment of proton-induced X-ray emission (PIXE) data for trace element (Fe, Sr, Zn) contents in agate from the environment surrounding the city of Pavlodar (Kazakhstan) are presented in this ...
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(1995)High-Mg volcanic rocks from the ca. 250 Ma old Siberian Flood Basalt Province (SFBP) were analyzed for their osmium and neodymium isotopic compositions in order to help to constrain source characteristics as the system ...
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(2000)The behavior of dissolved osmium at the river/ocean interface was studied in the Lena River estuary. Dissolved osmium removal is observed at very low salinities. The loss is estimated to be 28% of the dissolved concentration ...
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(2002)Os isotope ratios and Os and Re concentrations were measured in 56 lavas coming from 10 different subduction zones. Samples span a large range of major element concentrations (from basalts to dacites) and Mg# (from 0.32 ...
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(2004)This study presents the first extensive data set of Os isotopic compositions of primary Ru–Os–Ir alloys and Ru–Os sulfides derived from two Neoproterozoic ophiolite-type ultramafic massifs (Kunar in Northern Taimyr, Russia, ...
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(1999)Osmium concentrations in corals are very low (<20 ppt) and large isotopic variations (between 2.92 +- 0.05 9.01 0.05) areobserved indicating sample heterogeneity. these interpreted as a two component mixing for each sample. ...
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(1998)Sulfide globules present in basaltic glass were analyzed for Re and Os concentrations ([Re], [Os]) and 187Os/186Os from a selection of MORBs and Loihi lavas. The high Re and Os concentrations measured in sulfides confirm ...
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(2001)The Re-Os isotopic systematics of spinel- and garnet-bearing mantle xenoliths from North and Central America, Europe, southern Africa, Asia, and the Pacific region were determined to define more precisely the isotopic ...
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(2001)It is only in recent years that the use of freshwater Ostracoda as biomarkers in Quaternary studies has become developed to a useful level. This new utility stems from recent developments in the understanding of the taxonomy, ...
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(1991)This paper presents a theoretical formulation of Ostwald ripening of garnet and discusses the importance of the process during high pressure and low temperature (high P/T) metamorphism. The growth rate of garnet due to ...
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(1997)Synchrotron X-ray scattering measurements were performed in situ during the formation of thin (50-600 #9) overgrowths of otavite-calcite solid-solutions at the (1014) cleavage surface of single-crystal calcite. These ...
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(1996)Oulankaite, ideally (Pd,Pt)s(Cu,Fe)4SnTe2S2, is a new mineral species, occurring in pegmatoidal, plagio-clase-bearing pyroxenite hosted by a microgabbronorite in the Early Proterozoic Lukkulaisvaara mafic-ultramafic layered ...
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(2002)Using a 3D distinct-element mechanical modeling program, we examined the nature and magnitude of out-of-plane motion during along-strike propagation of a simple thrust ramp and attendant fault-related folding. Our numerical ...
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(1999)Fourier transform infrared (FTIR) and extended X-ray absorption fine structure (EXAPS) spectroscopic measurements were performed on Pb(II)ethylenediaminetetraacetic (EDTA) adsorbed on goethite as a function of pH (4-6), ...
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(2002)Density functional theory molecular orbital calculations and Marcus theory have been combined to assess the rates and physicochemical factors controlling the outer-sphere oxidation of divalent V, Cr, Mn, Fe, and Co aquo ...
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(1996)Solvated Pb(II) ions were found to adsorb as structurally well-defined outer-sphere complexes at specific sites on the α-Al2O3 (0001) single crystal surface, as determined by grazing-incidence X-ray absorption fine structure ...
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(1988)An analysis of satellite IR surveys of the earth surface in the wavelength interval from 10.5 to 11.3 μm indicated that a temporally and laterally stable increase in the intensity of the outgoing IR radiation flux, compared ...
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(2000)The Beer–Lambert law is traditionally used to determine water and carbon concentrations in glasses from their infrared (IR) spectra. In practice, this method requires estimation of the thickness and density of the glass ...
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(1997)The sediment sequence at Ocean Drilling Program (ODP) Site 910 (556 m water depth) on the Yermak Plateau in the Arctic Ocean features a remarkable ``overconsolidated section'' from ˜ 19 to 70-95 m below sea floor (m bsf), ...
Now showing items 8579-8598 of 21879