Abstract
Here we report the results of a study of the sedimentary rocks of the Yenisei Ridge, located on the south-western margin of the Siberian Platform. We investigated geochemical data on Meso- to Neoproterozoic terrigenous rocks and the isotopic (Sr, C, O) characteristics of carbonate rocks (the Sukhoi Pit, Tungusik, and Shirokino groups). The data show that the Sukhoi Pit, Tungusik, and Shirokino groups were deposited more than 850 Myr ago. The absence of tillite deposits and the occurrence of positive δ13C values indicate that the deposition took place before the occurrence of the Cryogenian global glaciations. The distributions of rare and trace elements in these rocks indicate that they were formed by the erosion of very mature (highly differentiated) rocks of the Siberian Platform.
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Acknowledgments
The work was supported by the Russian Foundation of Basic Research (projects nos. 12-05-00569, 12-05-00628, 12-05-33076) and the Presidium of the Siberian Branch of Russian Academy of Sciences (project no. 53.68).
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Vishnevskaya, I., Pisareva, N., Proshenkin, A., Kanygina, N. (2014). Geochemistry and Chemostratigraphy of Meso- to Neoproterozoic Sedimentary Rocks of the Yenisei Ridge (Siberia, Russia). In: Rocha, R., Pais, J., Kullberg, J., Finney, S. (eds) STRATI 2013. Springer Geology. Springer, Cham. https://doi.org/10.1007/978-3-319-04364-7_167
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DOI: https://doi.org/10.1007/978-3-319-04364-7_167
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