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Now showing items 1-20 of 128
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(2001)The presented results of U-Pb zircon dating (those for individual grains included) and Sm-Nd isochron ages for whole-rock samples and mineral fraction characterize magmatic complexes of the Muya segment of the Baikal-Muya ...
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(2004)Evident from the presented results, Riphean sedimentary rocks similar to the experimental ones may generate, in the course of natural OM maturation, approximately 40 kg/t of liquid and 50 kg/t of gaseous hydrocarbons ...
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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 golets zone in the mountains of southern Siberia occupies the summit belt of upland regions. Golets plants are enriched in many trace elements; the coefficient of biologic absorption, as calculated to the clarke for ...
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(1999)A comprehensive analysis of taxonomic composition of pre-Riphean silicified and organic-walled microfossils described in publications is performed and dynamics of stromatolite abundance during the Archean and Paleoproterozoic ...
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(2001)Southeastern Russia is characterized by considerable potential coal and brown coal resources. Paleogene to Neogene brown coals and Lower Cretaceous bituminous coals appear to be well developed (Khabarovsk, Bazovsky and ...
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(2004)The GALO system is applied to the numerical reconstruction of burial and thermal histories of the West Bashkirian lithosphere from the Riphean to the present. An analysis of the variation in tectonic subsidence of the basin ...
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(2001)Two secular variation curves of C-isotope composition in the Late Riphean carbonates are discussed. The curve approximating data on the Upper Riphean deposits of Spitsbergen, Greenland, northwestern Canada, and southwestern ...
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(1999)Carbon isotope composition is determined in the Riphean (1450-1350 to 850-820 Ma) carbonate rocks from the Sukhoi Pit, Tungusik, and Oslyanka groups of the Yenisei Ridge eastern zones. The results of petrographic, geochemical, ...
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(1998)The Karatau Group of the Southern Urals furnishes an opportunity to reveal the C-isotopic composition for the major part of the Upper Riphean in a single type succession comprising, according to radiometric and paleontological ...
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(2004)Thermal maturation of organic mater in the Precambrian sedimentary rocks of western Bashkortostan and realization of their oil-gas generation potential were numerically estimated using a chemical kinetic model for the ...
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(2001)Principal compositional features of Riphean gabbroids and associated titanomagnetite deposits on the western slope of the Urals are generally related to P-T conditions and the fluid regime of their formation. At low fluid ...
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(2003)The compositions of igneous rocks from the Tuva-Mongolia massif were studied. These rocks were formed during the precollisional, syncollisional, and postcollisional stages of massif formation. The compositions of strongly ...
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(1988)For the first time for eastern Yakutia, encompassing the Mesozoides of the Verkhoyansk clastic complex in the Baraya anticlinorium (BA), the Sartang synclinorium (SS) and the South Verkhoyansk synclinorium (SVS), the ...
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(2006)Columnar stromatolites representing more than a half of species described in Precambrian stromatolite assemblages reveal a regular trend of size variations during the Proterozoic and Early Paleozoic. Their dimensional ...
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(2006)In spite of significant quantity of publications, devoted to different aspects of the East European (Russian) platform geology, the joint analysis of structure and sedimentation evolution has not been made. The paper deals ...
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(2001)Different stages of evolution of geological structures are recorded in time dynamics of their gravity field. The regularities of the crust evolution on the territory of Belarus were investigated through claculation and ...
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(2004)General trends of the formation of Middle Riphean fine-grained aluminosiliciclastic rocks in the Bashkir Meganticlinorium are considered. It is shown that Yurmatinian shales do not contain any significant pyroclastic ...
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FORMATION DYNAMICS OF THE MIDDLE RIPHEAN RIFTOGENIC STRUTURE (WESTERN SLOPE OF THE SOUTHERN URALS) (2004)Based on the model of continental riftogenesis the Middle Riphean evolution of the study region was marked by the confinement of the maximal tension to its central part and the formation of grabens filled with coarse- to ...
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(1999)The Riphean and Vendian are characterized as a distinctive stage in the evolution of the biosphere. It is demonstrated that benthic and pelagic biotas of that time were sources of hydrocarbons in Precambrian sedimentary strata.
Now showing items 1-20 of 128