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First results of U–Pb dating of detrital zircons from the Ordovician clastic sequences of the Sol-Iletsk Block, East European Platform

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Abstract

The first LA–ICP–MS U–Pb isotopic ages of detrital zircons from the Ordovician sandstones of the Sol–Iletsk Block (well 2–Ordovician), located at junction of the East European Platform with the Pre-Caspian Basin and the Pre-Uralian foredeep, are presented. Two detrital zircons with well-defined ages of 561 ± 4 and 570 ± 5 Ma were found in sample K15–501. They confirm the Ordovician age of the sandstones, which earlier had been defined on the basis of seismic–stratigraphic and lithological correlations. The age distribution of the detrital zircons indicates the significant role of Late Precambrian rocks as provenance sources. However, those rocks still remain unknown in the Early Precambrian basement of the Volga–Ural part of the EEP.

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Correspondence to T. V. Romanyuk.

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Original Russian Text © N.B. Kuznetsov, V.M. Gorozhanin, E.A. Belousova, K.E. Degtyarev, E.N. Gorozhanina, T.V. Romanyuk, N.A. Kanygina, 2017, published in Doklady Akademii Nauk, 2017, Vol. 473, No. 4, pp. 453–458.

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Kuznetsov, N.B., Gorozhanin, V.M., Belousova, E.A. et al. First results of U–Pb dating of detrital zircons from the Ordovician clastic sequences of the Sol-Iletsk Block, East European Platform. Dokl. Earth Sc. 473, 381–385 (2017). https://doi.org/10.1134/S1028334X1704002X

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  • DOI: https://doi.org/10.1134/S1028334X1704002X

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