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Browsing ELibrary by Title
Now showing items 12526-12545 of 21936
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(2004)The presented experimental data indicate the mosaic character of reflecting properties at the boundary between the inner and outer core. This may be related to the rugged topography created by the ascending and descending ...
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(2002)Ophiolitic rocks with a zircon age of ∼1020 Ma occur in the Dunzhugur complex of East Sayan, Siberia, and are part of a Neoproterozoic to early Palaeozoic segment of the Central Asian fold belt. The most spectacular suite ...
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(2002)I present an overview of the origins and the history of the CNMMN, the naming of mineral species and the IMA system of numbering those new species. Where published, the equivalence between an IMA number and a name or ...
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(1997)Space weathering processes that operate in the lunar regolith modify the surfaces of lunar soil grains. Transmission electron microscope analysis of the lunar soil grains from the fine size fraction of several lunar soils ...
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(1986)Ultramafic lamprophyres (UML) are rare but widespread, hypabyssal rocks, rich in K, Mg, Cr, Ni, Sr, Ba, REE, and volatiles, containing less Si and more Ca than other silicate igneous rocks, and grading into carbonatites. ...
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(1996)Previous work has described the structural and diffraction criteria for distinguishing between tv-1M, cv-1M, and m-1M illite varieties, where tv-1M illite corresponds to a structure with trans vacant (tv) 2:1 layers, cv-1M ...
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(2002)The planar disorder of Ca-montmorillonite (Fuller's earth) has been investigated using structural simulations of X-ray powder patterns. A standard sample was fully characterized using chemical, microscopic, and diffraction ...
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(2000)Maskelynite, an important constituent of shocked meteorites, once thought to be diaplectic plagioclase glass formed by shock-induced solid-state transformation. Our systematic investigation of shocked L-chondrites and SNC ...
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(2004)In order to characterise the parental melts of crustal ultramafic cumulates from arc environments, we have undertaken a study of melt and fluid inclusions in olivine and clinopyroxene crystals in a typical cumulate xenolith ...
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(2003)We have performed Re–Os isotope measurements on a suite of 21 Kamchatka mantle xenoliths including 19 harzburgites and two lherzolites, from the northern arc front (Valovayam Volcano), the southern arc front (Avachinsky ...
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(2004)Eight interplanetary dust particles (IDPs) exhibiting a wide range of H and N isotopic anomalies have been studied by transmission electron microscopy, x-ray absorption near-edge structure spectroscopy, and Fourier-transform ...
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(2005)This work examines the red luminescence of benitoite studied by laser-induced time-resolved luminescence spectroscopy. This method allows the differentiation between luminescence centers of similar emission wavelengths, ...
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THE NATURE OF SEA DEPTH CHANGES IN EPICONTINENTAL SEDIMENTARY BASINS OF EAST SIBERIA IN THE SILURIAN (2004)It is commonly recognized that sea level experienced strong global-scale systematic changes in the geologic past. Its 20-100 m fluctuations in 1-10 m.y. (third-order) cycles are most often detected using Fischer plots based ...
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(2002)The nature and stability of end-member illite (I), K0.88±0.01/O10(OH)2, a K-deficient mica, has been a subject of much controversy. Evidence for the metastability of "illite" with respect to ideal muscovite (Ms) + pyrophyllite ...
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(2000)The position of the transition from spinel lherzolite to garnet lherzolite in the system CaO-MgO-Al2O3-SiO2 (CMAS) has been determined experimentally at near-solidus temperatures. In reversed experiments, the transition ...
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(2005)The search for extraterrestrial life was recently intensified because of new space missions. As long as life has not been found elsewhere in the universe, the best chances to discover extraterrestrial life are considered ...
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(1993)Mineralogical, petrological, geochemical, and neodymium isotopic investigations strongly suggest isotopic and chemical exchange between authigenic silicate phases and petroleum. Alteration of organic matter, sulfur reduction, ...
Now showing items 12526-12545 of 21936