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Now showing items 5246-5265 of 39004
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(1999)Djerfisherite [K6(Cu,Fe,Ni)25S26Cl] has been found as a daughter mineral in melt inclusions in melilite from a Kugda melilitolite. The inclusion mineral assemblage includes pyrrhotite, pentlandite, forsterite, diopside, ...
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(1998)The viscosities of a series of water-bearing peralkaline rhyolitic melts have been experimentally determined. The dry melt compositions are composed of a series of additions of Na2O to a metaluminous base composition. The ...
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(2002)We describe a phenocryst in a CO-chondrite type-II chondrule that we infer to have formed by melting an amoeboid olivine aggregate (AOA). This magnesian olivine phenocryst has an extremely 16O-rich composition Δ17O (=δ17O ...
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EXTRINSIC AND INTRINSIC MODE OF HYDROGEN OCCURENCE IN NATURAL OLIVINES: FTIR AND TEM INVESTIGATION (2001)Olivine crystals from two mantle nodules in kimberlites (pipe Udachnaya and pipe Obnazennaya, Yakutiya, Siberia) were investigated using EMP, TEM, AEM and FTIR techniques to determine the mode of hydrogen occurrence in ...
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(2004)3D numerical studies have shown that the vertical voltage above the Baikal deep-water fault is detectable and that respective transfer functions, Ez-responses, are sensitive to the electrical resistivity changes of the ...
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(2004)In an early attempt to incorporate infraspecific, varietal categories into conventional, morphodescriptive Linnaean taxonomy, Quenstedt in 1845 introduced an idiosyncratic trinominal nomenclature that has bedevilled ammonite ...
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(2002)Polycrystals undergoing ductile deformation develop lattice-preferred orientation (fabric) as a result of intracrystalline slip. A consequence of fabric development is that bulk physical properties become anisotropic. ...
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(2002)A practical and reliable method for the preparation of fine-grained forsterite and forsterite-enstatite polycrystals, in the system MgO-SiO2s described. The method employs state-of-the-art techniques from materials science, ...
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(1999)Detailed analysis of the crystal structures of minerals and inorganic compounds containing oxocentred [OCu 4 ] tetrahedra reveals the following principle for relationships between oxocentred tetrahedra and tetrahedral ...
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(1996)Neoproterozoic–Cambrian rocks of the Zavkhan Basin (Govi-Altay, western Mongolia) comprise large-scale alternations of siliciclastic- and carbonate-dominated units (cf. ‘Grand Cycles’). Analysis of such depositional sequences ...
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FACIES DIFFERENTIATION OF MINERAL AND ORGANIC MATTERS UNDER COASTAL-MARINE SEDIMENTATION CONDITIONS (2004)Coastal-marine sedimentation conditions in the Pechora River delta, Korovinskaya Bay, and intertidal zone of the Pechora Sea are characterized by diverse physicochemical processes that define the differentiation of mineral ...
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(1988)A characteristic feature of shallow granitoid rocks is graphic quartz-feldspar intergrowths, which are superb examples of a crystallized eutectic. The quartz content of these regular intergrowths is a sensitive indicator ...
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FACILITATION OF BARIUM UPTAKE INTO FISH OTOLITHS: INFLUENCE OF STRONTIUM CONCENTRATION AND SALINITY (2005)To reconstruct patterns of fish migration using otolith chemistry, it is essential to validate the relationship between elements in otoliths and the surrounding water, and in particular, how processes such as competition ...
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(1995)Quadrupole mass spectrometric (QMS) analysis of small amounts of inclusion fluid (<1 milligram) released by crushing and decrepitation requires methods to: (1) determine the amount of molecular fragmentation relative ...
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(2001)Sediment sorption capacity was measured in a coastal environment over a 2-year period using lysine as a model compound. Sorption capacity was found to vary over time but did not seem to follow a clear seasonal pattern or ...
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(2001)The effect of magnetic interactions has been commonly neglected in the interpretation of the anisotropy of magnetic susceptibility (AMS) of igneous rocks, despite the likely occurrence of magnetic interactions due to their ...
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(2002)A geochemical study of Cryogenian (late Neoproterozoic) limestones from western Mongolia is presented, including δ13C (carbonate and kerogen), δ18O, 87Sr/86Sr and rare earth element data. Carbon isotope compositions confirm ...
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(2001)Compositions of ∼2500 spinel–olivine pairs and 400 melt inclusion–spinel pairs have been analysed from 36 igneous suites from oceanic, arc and intraplate tectonic settings. Our data confirm that Cr-spinel mg -number is ...
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(2003)During their deceleration through the Earth's atmosphere, meteoritic materials, i.e., interplanetary dust particles, micrometeorites and meteorites, experience thermal shocks which may alter their pristine mineralogy, ...
Now showing items 5246-5265 of 39004