A Vendian manganese-bearing basin of the Ikat terrane: Formation settings and provenance areas |
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Authors: | S I Shkolnik E F Letnikova A V Maslov M D Buyantuev L Z Reznitskii I G Barash |
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Institution: | 1.Sobolev Institute of Geology and Mineralogy, Siberian Branch,Russian Academy of Sciences,Novosibirsk,Russia;2.Institute of the Earth’s Crust, Siberian Branch,Russian Academy of Sciences,Irkutsk,Russia;3.Zavaritsky Institute of Geology and Geochemistry, Ural Branch,Russian Academy of Sciences,Yekaterinburg,Russia;4.Geological Institute, Siberian Branch,Russian Academy of Sciences,Ulan-Ude,Russia |
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Abstract: | The results of geochemical, mineralogical, and isotope (U–Pb and Sm–Nd) studies of metasedimentary manganese-bearing rocks from the Itantsa Formation of the Ikat terrane are presented. It is found that the carbonate-effusive-shale complex of the Itantsa Fm. formed under the continental margin environment, with volcanic activity accompanying sedimentation, in the interval of 650–540 Ma ago. |
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