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Browsing ELibrary by Title
Now showing items 7188-7207 of 21879
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(2005)The frameworks of zeolites and related crystalline microporous oxide materials, such as aluminophosphates, silicoaluminophosphates and metaloaluminophosphates, are built up of tetrahedrally coordinated (e.g., Si, Al, P) ...
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(2002)High-resolution compositional mapping and dating of monazite on the electron microprobe is a powerful addition to microstructural analysis and an increasingly important tool for tectonic analysis. Microprobe monazite ...
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(2003)We report in situ measurements of O-isotopic compositions of magnetite, olivine and pyroxene in chondrules of the Ningqiang anomalous carbonaceous chondrite. The petrographic setting of Ningqiang magnetite is similar to ...
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(2003)Current radiometric remote sensing technology enables high resolution data of vegetation biomass to be obtained in the form of the Normalized Difference Vegetation Index (NDVI). The present study uses such data to examine ...
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(2004)The variations of carbon isotope composition and nitrogen content in a natural diamond with mixed octahedral and cuboid habit have been studied with the ion microprobe technique (SIMS). The systematic variations of δ13C ...
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(2003)The interaction of the {101¯4} cleavage surface of calcite with Hg(CH3COO)2 aqueous solutions with concentration of 5 mM Hg(II) (pH 3.5), was investigated using microscopic and spectroscopic techniques. In situ atomic force ...
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(2001)Aqueous dissolution of the (1014) surface of calcite was observed at pH near 9 by using an atomic force microscope equipped with a fluid cell. The influences of carbonate (CO32-), strontium (Sr2+), and manganese (Mn2+) ion ...
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(2005)Recent development and advances in solid state NMR, together with theoretical analyses using quantum-chemical calculations and statistical mechanical modeling, have allowed us to estimate and quantify the detailed distributions ...
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MICROSCOPIC REVERSIBILITY OF SM AND YB SORPTION ONTO SMECTITE AND KAOLINITE: EXPERIMENTAL EVIDENCE (2003)The microscopic reversibility of the sorption of Sm and Yb onto kaolinite and smectite is investigated by introducing an isotopic disequilibrium between the clay and the solution. The experiments are performed at 25°C, in ...
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(2001)Microsommite, ideal formula [Na4K2(SO4)] [Ca2Cl2][Si6Al6O24], is a rare feldspathoid that occurs in volcanic products of Vesuvius. It belongs to the cancrinite–davyne group of minerals, presenting an ABAB… stacking sequence ...
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(2003)Microspherules of aluminosilicate glass are found and studied in ores of the Nezhdaninskoe and Kellyam (Yakutia), Democrat (Alaska), and Kokpatas (Uzbekistan) gold-quartz and gold-quartz-sulfide deposits. They show a great ...
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(2004)Mineral microspherules widespread in the gold-quartz ores of the Kellyam deposit, Yakutia, were analyzed on a microprobe; the morphology of their surface and the inner structures of microspherules composed of ore minerals ...
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(2003)Compressional waves velocity VP was measured during long-term experiments in a high-pressure vessel (in the range [10-75] MPa for confining and pore pressures). Experiments were carried out on a granite specimen prepared ...
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(2004)The effects of brine on recrystallization in halite are well known. However, properties of brine such as morphology, connectivity, diffusivity and the resulting influences on deformation mechanisms are still a matter of ...
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MICROSTRUCTURAL EVOLUTION AND RHEOLOGICAL BEHAVIOUR OF MARBLES DEFORMED AT DIFFERENT CRUSTAL LEVELS (2002)Microstructures from naturally deformed marbles were investigated from a nappe pile with inverted Barrovian metamorphic zones. Detailed microstructural and textural work combined with existing PT data allows us to correlate ...
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(2002)Syntectonic antitaxial and ataxial fibrous veins were investigated using SEM, microprobe, cathodoluminescence (CL) and optical microscopy. In antitaxial calcite veins, fibres and surrounding selvage grew simultaneously, ...
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(2004)The contributions that Rob Hargraves made to paleomagnetism spanned not only great distances (from the Earth to Mars) but a vast expanse in time. His interests in the magnetic character of the Archean Earth led him to ...
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(2004)Emplacement of the southern Urals accretionary complex onto the East European Craton involved off-scraping of shallow marine limestones from the continental margin and their underplating to the base of the accretionary ...
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(2004)The microstructure of monazite was studied using scanning electron microscopy (SEM), electron microprobe analysis (EMP), X-ray diffraction patterns (XRD), and transmission electron microscopy (TEM). Four well-characterized ...
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(2001)Olivine (Fa 8.2%) from a mantle nodule in kimberlite (Udachnaya pipe, Yakutia) was heated in air at 700°C for 9 h and then examined by optical spectroscopy (IR and UV spectroscopy), electron microprobe analysis (EMPA), and ...
Now showing items 7188-7207 of 21879