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A Vendian manganese-bearing basin of the Ikat terrane: Formation settings and provenance areas
Authors:S I Shkolnik  E F Letnikova  A V Maslov  M D Buyantuev  L Z Reznitskii  I G Barash
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
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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