Using the isotope dating of endocontact hybrid rocks for the age determination of mafic rocks (southern Siberian craton)

D.P. Gladkochub, T.V. Donskaya, Michael Wingate, A.M. Mazukabzov, Sergei Pisarevsky, T.A. Kornilova

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    Geological observations and petrological and geochemical criteria are used to detect hybrid rocks at the endocontact of a dolerite dike. The hybrid rocks were produced when the material of a mafic intrusion mixed with a felsic melt. The latter was produced by the melting of the metamorphic rocks making up the Goloustnaya basement inlier of the Siberian craton, under the thermal effect of the intruded dike. Two age groups of zircon have been identified in the hybrid rock by SHRIMP analysis. The Paleoproterozoic age of inherited zircon (1902, 1864, 1859, and 1855 Ma) reflects the contribution of ancient sources to the hybrid-rock composition. The young, primary-magmatic, zircon grains, produced by melting at the endocontact of the mafic intrusion (494 ± 5 Ma), are coeval with the hybrid rocks, and their age indicates when the mafic rocks intruded the metamorphic framework. Dikes of close age, with similar geochemical characteristics, are present on the vast southern margin of the Siberian craton-from Goloustnaya to Biryusa salients. © 2013.
    Original languageEnglish
    Pages (from-to)1340-1351
    JournalRussian Geology and Geophysics
    Volume54
    Issue number11
    DOIs
    Publication statusPublished - 2013

    Fingerprint

    chronology
    cratons
    age determination
    dating
    mafic rock
    craton
    isotopes
    isotope
    rocks
    rock intrusions
    dike
    zircon
    rock
    intrusion
    melting
    inlier
    diabase
    metamorphic rocks
    temperature effect
    metamorphic rock

    Cite this

    Gladkochub, D.P. ; Donskaya, T.V. ; Wingate, Michael ; Mazukabzov, A.M. ; Pisarevsky, Sergei ; Kornilova, T.A. / Using the isotope dating of endocontact hybrid rocks for the age determination of mafic rocks (southern Siberian craton). In: Russian Geology and Geophysics. 2013 ; Vol. 54, No. 11. pp. 1340-1351.
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    abstract = "Geological observations and petrological and geochemical criteria are used to detect hybrid rocks at the endocontact of a dolerite dike. The hybrid rocks were produced when the material of a mafic intrusion mixed with a felsic melt. The latter was produced by the melting of the metamorphic rocks making up the Goloustnaya basement inlier of the Siberian craton, under the thermal effect of the intruded dike. Two age groups of zircon have been identified in the hybrid rock by SHRIMP analysis. The Paleoproterozoic age of inherited zircon (1902, 1864, 1859, and 1855 Ma) reflects the contribution of ancient sources to the hybrid-rock composition. The young, primary-magmatic, zircon grains, produced by melting at the endocontact of the mafic intrusion (494 ± 5 Ma), are coeval with the hybrid rocks, and their age indicates when the mafic rocks intruded the metamorphic framework. Dikes of close age, with similar geochemical characteristics, are present on the vast southern margin of the Siberian craton-from Goloustnaya to Biryusa salients. {\circledC} 2013.",
    author = "D.P. Gladkochub and T.V. Donskaya and Michael Wingate and A.M. Mazukabzov and Sergei Pisarevsky and T.A. Kornilova",
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    Using the isotope dating of endocontact hybrid rocks for the age determination of mafic rocks (southern Siberian craton). / Gladkochub, D.P.; Donskaya, T.V.; Wingate, Michael; Mazukabzov, A.M.; Pisarevsky, Sergei; Kornilova, T.A.

    In: Russian Geology and Geophysics, Vol. 54, No. 11, 2013, p. 1340-1351.

    Research output: Contribution to journalArticle

    TY - JOUR

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    AU - Gladkochub, D.P.

    AU - Donskaya, T.V.

    AU - Wingate, Michael

    AU - Mazukabzov, A.M.

    AU - Pisarevsky, Sergei

    AU - Kornilova, T.A.

    PY - 2013

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    N2 - Geological observations and petrological and geochemical criteria are used to detect hybrid rocks at the endocontact of a dolerite dike. The hybrid rocks were produced when the material of a mafic intrusion mixed with a felsic melt. The latter was produced by the melting of the metamorphic rocks making up the Goloustnaya basement inlier of the Siberian craton, under the thermal effect of the intruded dike. Two age groups of zircon have been identified in the hybrid rock by SHRIMP analysis. The Paleoproterozoic age of inherited zircon (1902, 1864, 1859, and 1855 Ma) reflects the contribution of ancient sources to the hybrid-rock composition. The young, primary-magmatic, zircon grains, produced by melting at the endocontact of the mafic intrusion (494 ± 5 Ma), are coeval with the hybrid rocks, and their age indicates when the mafic rocks intruded the metamorphic framework. Dikes of close age, with similar geochemical characteristics, are present on the vast southern margin of the Siberian craton-from Goloustnaya to Biryusa salients. © 2013.

    AB - Geological observations and petrological and geochemical criteria are used to detect hybrid rocks at the endocontact of a dolerite dike. The hybrid rocks were produced when the material of a mafic intrusion mixed with a felsic melt. The latter was produced by the melting of the metamorphic rocks making up the Goloustnaya basement inlier of the Siberian craton, under the thermal effect of the intruded dike. Two age groups of zircon have been identified in the hybrid rock by SHRIMP analysis. The Paleoproterozoic age of inherited zircon (1902, 1864, 1859, and 1855 Ma) reflects the contribution of ancient sources to the hybrid-rock composition. The young, primary-magmatic, zircon grains, produced by melting at the endocontact of the mafic intrusion (494 ± 5 Ma), are coeval with the hybrid rocks, and their age indicates when the mafic rocks intruded the metamorphic framework. Dikes of close age, with similar geochemical characteristics, are present on the vast southern margin of the Siberian craton-from Goloustnaya to Biryusa salients. © 2013.

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