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Now showing items 9472-9491 of 39124
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(2001)The Syrostan gabbro-granite pluton is situated immediately to the west of the Main Uralian Fault and exemplifies a multiple series of five intrusive rhythms. Each rhythm characterizes a separate episode of emplacement of ...
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(2004)The Khaldzan Buregte group of alkaline massifs was formed during seven intrusive phases and is confined to a large dike belt within Early Caledonian island-arc ophiolite and normal granite cutting the ophiolite. The uranium ...
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(2005)Sedimentary greigite (Fe3S4) is being increasingly implicated as the carrier of late diagenetic remagnetizations in fine-grained marine and terrestrial sediments. We have conducted detailed scanning electron microscope ...
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(1988)Methane occurrences in the Earth's crust are predominantly of biogenic origin, i.e. their ultimate source is biologically formed organic matter. Methane can also form through inorganic reactions and is consequently termed ...
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(2002)Low-temperature phase transitions of leonite-type compounds, K2Me2+(SO4)2 · 4H2O (Me = Mg, Mn, Fe), are investigated by temperature dependent measurements of single-crystal X-ray reflection intensities and lattice parameters. ...
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(2000)The multiple-scales structure of mantle convection remains largely unknown. A 3D model of convection is used to investigate the effect of a viscosity step on the multiple-scales pattern of an infinite Prandtl number ...
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(1995)Argon, Kr, and Xe were extracted from fluid inclusions (FI) in the Stripa granite by laser microprobe decrepitation of quartz and feldspar and measured in a low blank, high sensitivity, ion-counting mass spectrometer. Both ...
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(2003)Interest in multiple sulfur isotope analyses has been fueled by recent reports of mass-independent sulfur isotope signatures in the geologic record. A non-zero multiple isotopic signature of sulfur (Δ33S and Δ36S) is ...
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(2001)Diamondiferous rocks from the Kokchetav Massif, Kazakhstan, represent deeply subducted continental crust. In order to constrain the age of ultra high pressure (UHP) metamorphism and subsequent retrogression during exhumation, ...
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MULTISCALE ROUGHNESS ANALYSIS OF PARTICLES: APPLICATION TO THE CLASSIFICATION OF DETRITAL SEDIMENTS (2003)The shape of detrital quartz grains, mainly acquired under the effect of mechanical transport agents, has been observed and described for a long time by sedimentologists. The roughness of these grains is recognized as an ...
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(2001)Seismic traveltime tomography is commonly discretized by a truncated expansion of the pursued model in terms of chosen basis functions. Whether parametrization affects the actual resolving power of a given data set as well ...
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(2005)This U–Pb zircon geochronological study using TIMS and SHRIMP dating reveals new insights into the magmatic and metamorphic evolution of the Siberian Craton. Granulites, granites and one migmatite substantiate a multistage ...
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(Федеральное государственное бюджетное образовательное учреждение высшего образования «Санкт-Петербургский горный университет», 2018)The paper discusses the peculiarities of structural modelling (forecast of the depths of the reflecting horizons) based on the seismic and drilling data system. Seismic data are represented by vertical time values and the ...
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(1993)Multivariate statistical comparison of clinopyroxene compositions in various types of mafic and ultramafic xenoliths in volcanic rocks has shown that the compositional differences are adequately described by two principal ...
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(2001)The paper presents a new method of U and Th determination in bottom sediments implying synchrotron radiation with monochromatic beams at different energies, registration, and iterative joint processing of the resultant XRF ...
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(1988)Hitherto unknown muscle scars, which can be interpreted as places of attachment of retractor muscles, have been found in Cretaceous ammonites Aconeceras trautscholdi Sinz and Deshayestites deschayesi Leym. This discovery ...
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(2002)The structure of the shell muscles among the Cambrian mollusks has been a stumbling block for malacologists studying the morphology and phylogeny of the most ancient members of the phylum Mollusca. Apart from several dubious ...
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(2006)The muscular system of euconodont animals was studied in detail on the basis of the photographs of imprints from the Lower Carboniferous Shrimp Bed of Granton (Scotland), Upper Ordovician Soom Shale (South Africa), and ...
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(2003)Observations of living Cernina fluctuata (Sowerby), the sole extant species of the Mesozoic and Cenozoic prosobranch gastropod family Ampullospiridae, show that this species is an algal grazer and is not a shell-drilling, ...
Now showing items 9472-9491 of 39124