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Browsing ELibrary by Title
Now showing items 2548-2567 of 21934
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(2003)The irreversible evolution of the Earth and periodic fluctuations of the climate and environment are major forces that drive biological evolution. Irreversible evolution is exemplified by the cooling of the Earth's interior, ...
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(2002)Some Triassic key sections of Siberia and the eastern Urals are characterized in terms of paleontology. In the northeastern Siberia, these are sequences of the Cape Tsvetkov (the eastern Taimyr Peninsula) and the Ust'-Anabar ...
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(2004)Upper Devonian clastic complexes (the Zilair Formation flysch, Biyagoda mixtite, Koltuban limestone conglomerate, Bugodak volcanogenic-sedimentary sequence) are considered. In the eastern flank of the Southern Urals, the ...
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(1987)There exists a definite relationship between type of the geomagnetic field and the individual stages of megacycles of the Earth's evolution. Based on their experimental data, the authors draw the following conclusions: (1) ...
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(2003)Composite stratigraphic sections of Lower-Middle Jurassic (pre-Callovian) deposits, which have been studied in the northern, axial, and southern parts of the Greater Caucasus central segment are described. Stratotypes and ...
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(1997)Based on the analysis of sections of the southeastern Sikhote Alin (Primor'e), it is inferred that the subdivision and mapping of chaotic olistostrome complexes by traditional stratigraphic methods is impossible. ...
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(2002)Isotopic data of unaltered low-Mg calcite brachiopods from type Bashkirian strata of the Askyn River section (southern Urals, Russia) are correlated with those from the Mid-Carboniferous Boundary Global Stratotype Section ...
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(2004)The marine sedimentary successions of Barremian age yield, both in northwest Europe and on the Russian Platform, diverse and abundant belemnite faunas. These include the genera Praeoxyteuthis, Aulacoteuthis and Oxyteuthis ...
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(1997)Detailed Paleogene stratigraphy is based nowadays on the zonal schemes of different microfossil groups. The specific character of their development and the use of microphytofossil zonations in the regional stratigraphy of ...
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(1998)The analyzed distribution ranges of tetrapods, ostracods, megaspores, and other fossils were used, with due regard for the facial dependence and phylomorphogenetic lineage, to resolve correlation problems concerning Triassic ...
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(2003)Composition and structure of the Upper Neopleistocene alluvial and lacustrine sections in the southern trans-Urals region are discussed. Sections of the Kamyshlov alluvial complex (Streletskoe, Vvedenskoe, Verkhnyaya ...
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(1999)The Upper Mesozoic deposits of the northern and southern parts of the Korean Peninsula significantly differ from each other. The Upper Jurassic-Neocomian deposits of North Korea are represented by the differentiated volcanics ...
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(1997)The correlation of marine and terrestrial deposits is one of the most difficult problems of stratigraphy. The Volga-Urals region compriseś stratotypes of the Upper Permian stages (Ufimian, Kazanian, Tatarian). A thorough ...
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(1988)The paper first discusses the two independent methods of directly determining the changes in a physical variable with depth in the interior of the earth, namely seismic and electromagnetic sounding. It then considers the ...
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(2001)The main goal of this study is to revise the correlation algorithm for estimating parameters of the revised Helgeson-Kirkham-Flowers (HKF) model for aqueous nonelectrolyte solutes. The basis for the revision is the analysis ...
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(2003)Geochemical as well as multivariate statistical analyses (PCA) were carried out on 20 crude oil samples from ‘Middle’ Pliocene Production Series (MPPS) of Guneshli-Chirag-Azeri (GCA), Bahar, and Gum Adasi fields in the ...
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(2003)About the book: Humans have long marvelled at (and feared) the odorous and colourful manifestations of volcanic emissions, and, in some cases, have harnessed them for their economic value. The degassing process responsible ...
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(1997)The major-element composition of Mid-Ocean Ridge basalts (MORB) shows geochemical variations controlled by the temperature, pressure and source composition produced by convection in the mantle beneath the spreading centers. ...
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(2002)To understand compositional variation in igneous biotite, full analyses of a suite of biotites of variable composition from volcanic and xenolith parageneses have been completed. Major and minor elements were determined ...
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(1997)The analysis of Permian biotic and abiotic events has revealed a series of contrasting global biostratigraphic levels, to which significant changes in faunal assemblages are confined. The most important among them - the ...
Now showing items 2548-2567 of 21934