Hydrous Silicates Injecting the Pores of Fossils
نویسندگان
چکیده
منابع مشابه
Hydrous Silicates and Water on Venus
We used thermochemical equilibrium calculations to predict Water vapor, present at 30–45 parts per million by volstabilities of pure rock-forming hydrous silicates on Venus’ ume (ppmv) in Venus’ subcloud atmosphere (Drossart surface as a function of elevation, atmospheric H2O and SO2 concentrations, and oxygen fugacity (fO2). About 50 different et al. 1993; Pollack et al. 1993; DeBergh et al. 1...
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Context. Hydrous silicates occur in various cosmic environments, and are among the minerals with the most pronounced bands in the far infrared (FIR) spectral region. Given that Herschel and ALMA will open up new possibilities for astronomical FIR and sub-mm spectroscopy, data characterizing the dielectric properties of these materials at long wavelengths are desirable. Aims. We aimed at examini...
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Introduction: Given its abundance in the solar nebula, it is likely that water played a crucial role during the formation and differentiation of the terrestrial planets. Recent evidence from Ceres, a small proto-planet orbiting in the asteroid belt, confirmed that H2O-rich planetary bodies existed during the early evolution of the Solar System [1,2]. Within accreting planetesimals chondritic wa...
متن کاملDynamics on the microsecond timescale in hydrous silicates studied by solid-state (2)H NMR spectroscopy.
Solid-state (2)H NMR spectroscopy has been used to probe the dynamic disorder of hydroxyl deuterons in a synthetic sample of deuterated hydroxyl-clinohumite (4Mg(2)SiO(4).Mg(OD)(2)), a proposed model for the incorporation of water within the Earth's mantle. Both static and magic angle spinning (MAS) NMR methods were used. Static (2)H NMR appears to reveal little evidence of the dynamic process,...
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Lizardite was pressurized up to about 28 and 20 GPa and heated at 1310 ( þ 50) and 1100 ( þ 100)3C; antigorite was pressurized at about 25 and 22 GPa and heated at V10003C, with a Nd:YAG laser using the double-side laser heating technique. Samples were then examined in situ by energy dispersive synchrotron X-ray diffraction. Our results show that phase E, superhydrous phase B, and phase D are i...
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ژورنال
عنوان ژورنال: Nature
سال: 1871
ISSN: 0028-0836,1476-4687
DOI: 10.1038/004162d0