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Now showing items 16716-16735 of 43478
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(2002)Ten spore-and-pollen assemblages and nine phytoplankton assemblages (dinocysts, green algae, acritarchs) are distinguished in upper Sarmatian-lower Kimmerian deposits of the reference section situated in the Zheleznyi Rog ...
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(2004)The exine ultrastructures of pollen extracted from sporangia of Loricanthus resinifer and Baisianthus ramosus from the Early Cretaceous Baisa locality (eastern Transbaikalia) were examined. The pollen are small, with a ...
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(2006)Tropical cyclones (typhoons, hurricanes) are the largest and most destructive natural whirls arising from the interchange of energy between the ocean and atmosphere. Hurricanes are a primary subject of investigation in the ...
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(2004)The MDSW represents a powerful and the most significant factor responsible for ventilation (consequently, formation and variability) of the intermediate water mass of the North Pacific. The main purpose of this work is a ...
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(2004)The water mass spreading observed in the study region suggests the following conclusions. First, the Kruzenshtern Strait represents a stable source of the NPW for the Sea of Okhotsk and only small SOW quantities can enter ...
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(2004)Spriggite, Pb3[(UO2)6O8(OH 2](H2O)3, is a new hydrated Pb uranyl oxyhydroxide found near Arkaroola, Northern Flinders Ranges, South Australia. The new mineral's name honors geologist and conservationist Reginald Claude ...
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(2002)The use of geophysics in shallow investigations, such as in environmental, geotechnical and hydrogeological studies requires the development of fast, reliable, high-resolution field and interpretation techniques.When ...
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(1994)We report measurements on a suite of well preserved sedimentary carbonates from Lower Cambrian strata of the Lena River region of Siberia. Stable isotopes and major and trace element chemistry have been used to identify ...
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(2006)Upper Eocene impact ejecta has been discovered all over the world. The number of upper Eocene impact layers and the geographic distribution of each layer, based on major chemical composition and biostratigraphic data, are ...
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(1995)Chemical diffusion of Sr and Nd has been measured in natural titanite under anhydrous conditions. The diffusing species were introduced via powder sources containing Sr or Nd. Concentration profiles were measured by the ...
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(2006)The Francistown plutonic rocks at the south-western margin of the Zimbabwe craton consist of three igneous suites: Sanukitoid, Tonalite–Trondhjemite–Granite (TTG) suites and High-K granites. The TTG suite is subdivided ...
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(2003)The presented Rb-Sr systematics of carbonates from the Karatau Group, the Upper Riphean stratotype of southern Urals, elucidates important details of secular variations of 87Sr/86Sr ratios in the Late Riphean seawater, ...
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(2006)The 87Sr/86Sr ratios and Sr concentrations in sediment and pore fluids are used to evaluate the rates of calcite recrystallization at ODP Site 807A on the Ontong Java Plateau, an 800-meter thick section of carbonate ooze ...
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(2001)The Seoguipo Formation, Cheju Island, Korea is a shallow-marine to nonmarine sedimentary formation formed by the earliest stage of volcanism and simultaneous volcanogenic sedimentation of the island. The formation contains ...
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(2003)Here we present Sr, C, and O isotope curves for Ordovician marine calcite based on analyses of 206 calcitic brachiopods from 10 localities worldwide. These are the first Ordovician-wide isotope curves that can be placed ...
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(2001)The diffusion of Sr, Y and three rare earth elements (Nd, Dy and Yb) has been measured in natural fluorite under dry 1-atm conditions. Sources of diffusant consisted of mixtures of Sr, Y, or REE fluorides and CaF2 powders, ...
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(2006)Новые данные о Sr- и С-изотопной систематике карбонатных пород типового разреза верхнего ри-фея (каратавской серии Южного Урала), полученные при исследовании образцов из нескольких ранее не изученных разрезов на юго-западе ...
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(2003)The progress in Rb-Sr, U-Pb, and Pb-Pb methods offered new possibilities in gaining direct information concerning the sedimentation environment of Precambrian carbonate rocks and their age. The application of this approach ...
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(2006)An extensive, nearly continuous and hitherto unreported solid-solution series is observed in Sr-Na-REE titanates in a fenitized megaxenolith, Khibina alkaline complex, Kola Peninsula, Russia. These titanate minerals, related ...
Now showing items 16716-16735 of 43478