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Now showing items 1655-1674 of 39065
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(PANGAEA, 2003-01-30)
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(2010)Золото-серебряное оруденение континентальной тихоокеанской окраины Северо-Востока Азии контролируется разновозрастными вулканогенными поясами, наложенными на кратонные, пассивных континентальных окраин, островодужные и ...
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(2006)В статье обобщены результаты тектоно-металлогенических, геолого-структурных, минералогических, изотопных и термобарогеохимических исследований, проведенных в пределах месторождения Алшар и его районе. Полученные данные ...
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(Федеральное государственное унитарное предприятие «Центральный научно-исследовательский геологоразведочный институт цветных и благородных металлов», 2020)Au-Pd-Cu-Se-U минерализация рудопроявления Светлое (Центральная Карелия) формировалась близповерхностно в условиях привноса селена, меди, свинца, благородных металлов, урана и интенсивного окисления ~1500 млн лет назад. ...
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(2004)Приводятся данные о Au-PGE-минерализации, обнаруженной в угленосных впадинах Павловского буроугольного месторождения и на их обрамлении. Показано, что благороднометальная минерализация развивается здесь на разных уровнях ...
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(2001)The application of new capabilities of audiomagnetotelluric sounding (AMTS) is explained using the example of the Nagolny ore area (the Bobrikovo gold and polymetallic deposit). Using for the first time the newly developed ...
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(1981)Riphean and Palaeozoic linear graben-like platform depressions — aulacogens —jointly with linear swell uplifts in a platform cover, intraplatform folded zones and Meso-Cenozoic epi-platform rift zones are different ...
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(1988)The gold-silver ores of eastern Yakutia abound with 'mustard' gold. In the upper ore levels that material consists of supergene antimony oxides. At greater depths it consists of hypogene antimony oxides and stibnite. It ...
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(1997)About 10,000 years ago, at the Pleistocene-Holocene border, some important events occurred: the glaciation stopped abruptly; the sea level elevated, and quick (for 20-50 years) climatic and ecological changes took place, ...
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Authigenic carbonate and barite mineralization in sediments of the Deryugin Basin (Sea of Okhotsk). (PANGAEA, 2000-06-06)Results of studies of mineralogy, geochemistry, and isotope parameters (d13C, d34S, d180, and 87Sr/86Sr) of carbonates and barites from sediments of the Deryugin Basin in the Sea of Okhotsk are presented. Diagenetic nature ...
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(2004)Oceanic authigenic carbonates are classified according to the origin of carbonate carbon source using a complex methodology that includes methods of sedimentary petrography, mineralogy, isotope geochemistry, and microbiology. ...
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(PANGAEA, 2004-07-11)
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(PANGAEA, 2010-11-22)Authigenic carbonates associated with cold seeps provide valuable archives of changes in the long-term seepage activity. To investigate the role of shallow-buried hydrates on the seepage strength and fluid composition we ...
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(2002)The diagenetic evolution of kaolin and illitic minerals in sandstones is described here. The structural characterization of these minerals, the possible reaction pathways leading to their crystallization, and the origin ...
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(1997)Formation of authigenic sulfides and carbonates in Holocene 14C-dated sediments is interpreted based on analyses of cations, FeS-S, FeS2-S, Corg and sulfur isotopes. Mineral distribution was studied in thin sections and ...
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(2003)We report the development of a new analytical system allowing the fully automated measurement of isotopic ratios in micrometer-sized particles by secondary ion mass spectrometry (SIMS) in a Cameca ims-6f ion microprobe. ...
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(1987)The basic problem of modern geolectric science is the development of methods for interpreting the data of electromagnetic investigations in areas with complex laterally nonuniform structure of the geoelectric section. A ...
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(2002)In order to provide a basis for short-term decision-making in the forecasting and monitoring of volcanic activity, we developed an entirely automated system of data acquisition and reduction for magnetic data. The system ...
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(2001)Parameters of hydrologic models often are not exactly known and therefore have to be determined by calibration. A manual calibration depends on the subjective assessment of the modeler and can be very time-consuming though. ...
Now showing items 1655-1674 of 39065