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GeologyScience Repository: Recent submissions
Now showing items 2901-2920 of 40311
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(2005)We report isotope analyses of helium, neon, argon, and xenon using different extraction techniques such as stepwise dynamic and static crushing, and high-resolution stepwise heating of three mantle xenoliths from Réunion ...
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(2005)It is the great challenge of geomicrobiology to study microorganisms in the context of their environments, both in Earth’s distant past and in the present. Planet Earth and its biosphere have evolved together, and a chronicle ...
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(2005)Smectite illitization was investigated in felsic volcaniclastic rocks from a drill core near the Kakkonda active geothermal system, Japan, using high resolution transmission electron microscopy (HRTEM) that provided ...
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(2005)We have measured the interfacial tension γSF between sulfide and silicate melts over the temperature range from 1250 to 1325 °C by in situ measurement of the shapes of sessile drops of sulfide immersed in silicate melt, ...
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(2005)A quantitative relation between the linear attenuation coefficient (LAC) obtained by Synchrotron Radiation X-ray computed tomography (observed LAC) and the theoretically calculated LAC (theoretical LAC) of standard materials ...
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(2005)Solar-type helium (He) and neon (Ne) in the Earths mantle were suggested to be the result of solar-wind loaded extraterrestrial dust that accumulated in deep-sea sediments and was subducted into the Earths mantle. To obtain ...
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(2005)The water column chemistry of lake St Eloy (St Eloy-les Mines, Allier, France) was monitored over a period of a year. This is a small stratified lake created by subsidence of an underground coal mine. The results show a ...
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(2005)Varved (annually-laminated) sediments offer a rare and physically undisturbed archive of past trace metal deposition and limnological conditions. Here, a high-resolution 1,300 year record of metal accumulation is presented ...
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(2005)Investigations and syntheses of meso- and microporous sulfides and selenides received in general much less attention than those of silicate and oxide families. Moreover, data on such compounds are scattered ...
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(2005)Rare gases have been measured in ultramafic xenoliths from European volcanic provinces, Dreiser Weiher (Germany), Massif Central (France) and Kapfenstein (Austria), to characterize the rare gas signature of a proterozoïc ...
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(2005)An algorithm for the construction of phase diagram sections is formulated that is well suited for geodynamic problems in which it is necessary to assess the influence of phase transitions on rock properties or the evolution ...
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(2005)Sorption and transformation of 1-naphthol by a K-smectite (K-SWy-2) were studied using batch sorption isotherms, Fourier-transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). The sorbents included three ...
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(2005)In this chapter, we illustrate and discuss two distinct groups of microporous phases: the cancrinite group and the C-S-H compounds of the tobermorite and gyrolite families. The compounds in the first group present a ...
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(2005)Quartz crystals from topaz–zinnwaldite–albite granites from Zinnwald (Erzgebirge, Germany) contain, in addition to primary and secondary fluid inclusions (FIs), abundant crystalline silicate-melt inclusions (MIs) with ...
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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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(2005)Komatiite samples from the 2.8-Ga Kostomuksha greenstone belt in the Baltic Shield define Pt–Os and Re–Os isochrons with ages of 2816 ± 190 and 2880 ± 83 Ma, respectively. The mean initial 186Os / 188Os and 187Os / 188Os ...
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(2005)We measured major, minor, and trace-element compositions for eleven Al-rich chondrules from unequilibrated ordinary chondrites to investigate the relationships between Al-rich chondrules, ferromagnesian chondrules, Ca-, ...
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(2005)Aqueous fluid inclusions in anhydrite that are frozen during microthermometry commonly develop new daughter crystals. Heating these inclusions induces the new daughter crystals to decompose. Repeated cycles of crystal ...
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ORIGIN OF LOW-CA PYROXENE IN AMOEBOID OLIVINE AGGREGATES: EVIDENCE FROM OXYGEN ISOTOPIC COMPOSITIONS (2005)Amoeboid olivine aggregates (AOAs) in primitive carbonaceous chondrites consist of forsterite (Fa<2), Fe,Ni-metal, spinel, Al-diopside, anorthite, and rare gehlenitic melilite (Åk<15). ~10% of AOAs contain low-Ca pyroxene ...
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(2005)Iron-poor and refractory lithophile element (RLE) rich forsterite grains occur in all major types of unequilibrated chondrites. In our laser ablation inductively coupled mass spectrometry (LA-ICPMS) minor and trace element ...
Now showing items 2901-2920 of 40311