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Browsing ELibrary by Title
Now showing items 5360-5379 of 21768
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(2004)Another BDP drilling experiment was carried out in the winter of 1999 at 52degrees05'23"N-105degrees50'24" E, under 201 in of water, on the slope of the Posol'sk Bank, a submerged bottom rise in South Baikal. The -350 m ...
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(1999)Cathodoluminescence (CL) investigations of igneous, metamorphic and sedimentary feldspars indicate that rare earth elements (REE)-activated CL in feldspars is more common than previously assumed. Hot-cathode CL microscopy ...
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(2001)We have analyzed 214 fossil apatite samples from nine stratigraphic sections worldwide that cover the lower Cambrian to lower Ordovician for their strontium isotope ratios. Of these samples, 180 from six sections that cover ...
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(2003)Pre-Quaternary terrestrial climate records in which time has been calibrated using astronomical cycles are, with the exception of lacustrine proxies, poorly represented in the geological record. This omission is a significant ...
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(2000)The results of a new technique for the measurement of the thickness distribution of fundamental particles are reported. The technique is based on high-resolution transmission electron microscopy (HRTEM) of Na-saturated ...
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(2001)High-resolution X-ray Absorption Near-Edge Structure (XANES) spectra of iron allow to take into account the effects of the coordination numbers on the quantification of redox values. Volcanic glasses show split pre-edge ...
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(2005)We present the first high-resolution carbon isotope and carbonate content profiles generated through the thickness of enamel from a steer fed C3- then C4-dominant food. Carbonate contents decrease by ~2 wt% from the enamel ...
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(1999)The viability of oxygen isotope analysis of tooth enamel by UV laser ablation and fluorination has been demonstrated by comparison with the Ag3PO4 extraction method. In-situ analyses by UV laser fluorination using both ...
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(2001)Water solubility in hydrocarbon systems is of great interest for deep oil fields. A new autoclave has been designed to measure phase equilibria in water-hydrocarbon systems up to 400°C and 1.5 kbar. It has been applied for ...
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(2005)A new technique has been developed for the determination of the oxygen isotope composition from biogenic silica. The iHTR method (inductive high temperature carbon reduction) is based on the reduction of silica by carbon ...
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(2001)High-temperature creep behavior in Ni2GeO4 spinel was investigated using synthetic polycrystalline aggregates with average grain sizes ranging from submicron to 7.4 microns. Cylindrical samples were deformed at constant ...
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(2003)Single crystal X-ray structure data have been obtained for wairakite (Wairakei, New Zealand), Ca0.95Na0.06[Al1.96Si4.04O12].2H(2)O, at temperatures of 20degreesC, 170degreesC, 210degreesC, 400degreesC, and 600degreesC. ...
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(1997)One-atmosphere density measurements at very high temperatures have been performed on four mantle melts in the FeO-Fe2O3-CaO-MgO-Al2O3-SiO2 system (FeO-rich peridotite, PHN 1611, komatiite, and fayalite), using the Ir-based ...
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(2002)A series of heating stage experiments, at ambient atmosphere and high temperature, were conducted in order to detail the change in the homogenization temperature and the behavior of H2O of melt inclusions in olivine ...
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(2001)The heat capacity of end-member titanite and (CaTiSiO5) glass has been measured in the range 328–938 K using differential scanning calorimetry. The data show a weak λ-shaped anomaly at 483 ± 5 K, presumably associated with ...
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(2003)The prediction of viscosity in silicate melts, over the range of conditions found in nature, remains one of the most challenging and elusive goals in Earth Sciences. We present a strategy for fitting non-Arrhenian models ...
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(1999)Raman spectra of fluids of the CO2-CH4-H2O systems contained in synthetic fluid inclusions have been obtained above the homogenization temperature to 500°C. Spectra of the CO2 and CH4 gases do not vary along the portion ...
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(2001)Torsional forced-oscillation and microcreep methods have been employed in a study of the viscoelastic behaviour of fine-grained polycrystalline olivine at high temperatures (to 1300 °C), seismic frequencies and low strain ...
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(2003)Structural investigations at high temperature were carried out on natural columbite samples across the join Fe(Nb0.95Ta0.05)2O6-Mn(Nb0.95Ta0.05)2O6. The samples were preliminarily annealed to attain the complete cation-ordered ...
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(2002)The optical spectra of dravite (tourmaline) with an unusually high ratio of Fe3+ to Fe2+ and a synthetic elbaite with high Fe3+ content were studied at high temperature (297 to 600 K) and high pressure (to 10.51 GPa) ...
Now showing items 5360-5379 of 21768