The 880-864 Ma granites of the Yenisey Ridge, western Siberian margin: Geochemistry, SHRIMP geochronology, and tectonic implications

V. A. Vernikovsky, A. E. Vernikovskaya, M. T.D. Wingate, N. V. Popov, V. P. Kovach

    Research output: Contribution to journalArticle

    34 Citations (Scopus)

    Abstract

    The results of geological, petrological, geochemical, and geochronological investigations of the Teya, Kalami, and Yeruda granites are discussed in the context of the formation the western margin of the Siberian craton and the Central Asian Orogenic Belt. These granites occur within Meso- to Neoproterozoic greenschist and amphibolite facies metamorphic rocks of the Central Angara terrane in the Yenisey Ridge region. Based on previous geochronology, these rocks have been implicated in alleged late Mesoproterozoic (Grenville-age) collision events along the western Siberian craton margin during the assembly of Rodinia. In all three plutons, the granites have mostly subaluminous-slightly peraluminous chemical compositions, and are characterized by variable normative corundum (1.1-3.3%) and Na2O/K2O (0.4-1.8). Sm-Nd and Rb-Sr isotopic data show that they could be formed from continental crust magmatic sources with Paleoproterozoic model ages (TNd(DM-2st) = 1.8-2.1 Ga). SHRIMP U-Pb zircon ages of 868-864 Ma were obtained for three samples from the Teya granite and 875 Ma for a sample from the Kalami granite. Together with the previously dated 878 Ma Yeruda granite, these intrusive rocks are the most ancient granites in the Transangara region of the Yenisey Ridge. It is likely that the Teya, Kalami, and Yeruda granites were part of the Central Angara terrane prior to its collision with Siberia at 760-720 Ma.

    Original languageEnglish
    Pages (from-to)175-191
    Number of pages17
    JournalPrecambrian Research
    Volume154
    Issue number3-4
    DOIs
    Publication statusPublished - 15 Apr 2007

    Fingerprint

    Geochronology
    Geochemistry
    Tectonics
    geochronology
    granite
    geochemistry
    tectonics
    craton
    terrane
    collision
    Rocks
    Metamorphic rocks
    Rodinia
    corundum
    Aluminum Oxide
    greenschist facies
    orogenic belt
    amphibolite facies
    rock
    metamorphic rock

    Cite this

    Vernikovsky, V. A. ; Vernikovskaya, A. E. ; Wingate, M. T.D. ; Popov, N. V. ; Kovach, V. P. / The 880-864 Ma granites of the Yenisey Ridge, western Siberian margin : Geochemistry, SHRIMP geochronology, and tectonic implications. In: Precambrian Research. 2007 ; Vol. 154, No. 3-4. pp. 175-191.
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    title = "The 880-864 Ma granites of the Yenisey Ridge, western Siberian margin: Geochemistry, SHRIMP geochronology, and tectonic implications",
    abstract = "The results of geological, petrological, geochemical, and geochronological investigations of the Teya, Kalami, and Yeruda granites are discussed in the context of the formation the western margin of the Siberian craton and the Central Asian Orogenic Belt. These granites occur within Meso- to Neoproterozoic greenschist and amphibolite facies metamorphic rocks of the Central Angara terrane in the Yenisey Ridge region. Based on previous geochronology, these rocks have been implicated in alleged late Mesoproterozoic (Grenville-age) collision events along the western Siberian craton margin during the assembly of Rodinia. In all three plutons, the granites have mostly subaluminous-slightly peraluminous chemical compositions, and are characterized by variable normative corundum (1.1-3.3{\%}) and Na2O/K2O (0.4-1.8). Sm-Nd and Rb-Sr isotopic data show that they could be formed from continental crust magmatic sources with Paleoproterozoic model ages (TNd(DM-2st) = 1.8-2.1 Ga). SHRIMP U-Pb zircon ages of 868-864 Ma were obtained for three samples from the Teya granite and 875 Ma for a sample from the Kalami granite. Together with the previously dated 878 Ma Yeruda granite, these intrusive rocks are the most ancient granites in the Transangara region of the Yenisey Ridge. It is likely that the Teya, Kalami, and Yeruda granites were part of the Central Angara terrane prior to its collision with Siberia at 760-720 Ma.",
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    The 880-864 Ma granites of the Yenisey Ridge, western Siberian margin : Geochemistry, SHRIMP geochronology, and tectonic implications. / Vernikovsky, V. A.; Vernikovskaya, A. E.; Wingate, M. T.D.; Popov, N. V.; Kovach, V. P.

    In: Precambrian Research, Vol. 154, No. 3-4, 15.04.2007, p. 175-191.

    Research output: Contribution to journalArticle

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    T1 - The 880-864 Ma granites of the Yenisey Ridge, western Siberian margin

    T2 - Geochemistry, SHRIMP geochronology, and tectonic implications

    AU - Vernikovsky, V. A.

    AU - Vernikovskaya, A. E.

    AU - Wingate, M. T.D.

    AU - Popov, N. V.

    AU - Kovach, V. P.

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    Y1 - 2007/4/15

    N2 - The results of geological, petrological, geochemical, and geochronological investigations of the Teya, Kalami, and Yeruda granites are discussed in the context of the formation the western margin of the Siberian craton and the Central Asian Orogenic Belt. These granites occur within Meso- to Neoproterozoic greenschist and amphibolite facies metamorphic rocks of the Central Angara terrane in the Yenisey Ridge region. Based on previous geochronology, these rocks have been implicated in alleged late Mesoproterozoic (Grenville-age) collision events along the western Siberian craton margin during the assembly of Rodinia. In all three plutons, the granites have mostly subaluminous-slightly peraluminous chemical compositions, and are characterized by variable normative corundum (1.1-3.3%) and Na2O/K2O (0.4-1.8). Sm-Nd and Rb-Sr isotopic data show that they could be formed from continental crust magmatic sources with Paleoproterozoic model ages (TNd(DM-2st) = 1.8-2.1 Ga). SHRIMP U-Pb zircon ages of 868-864 Ma were obtained for three samples from the Teya granite and 875 Ma for a sample from the Kalami granite. Together with the previously dated 878 Ma Yeruda granite, these intrusive rocks are the most ancient granites in the Transangara region of the Yenisey Ridge. It is likely that the Teya, Kalami, and Yeruda granites were part of the Central Angara terrane prior to its collision with Siberia at 760-720 Ma.

    AB - The results of geological, petrological, geochemical, and geochronological investigations of the Teya, Kalami, and Yeruda granites are discussed in the context of the formation the western margin of the Siberian craton and the Central Asian Orogenic Belt. These granites occur within Meso- to Neoproterozoic greenschist and amphibolite facies metamorphic rocks of the Central Angara terrane in the Yenisey Ridge region. Based on previous geochronology, these rocks have been implicated in alleged late Mesoproterozoic (Grenville-age) collision events along the western Siberian craton margin during the assembly of Rodinia. In all three plutons, the granites have mostly subaluminous-slightly peraluminous chemical compositions, and are characterized by variable normative corundum (1.1-3.3%) and Na2O/K2O (0.4-1.8). Sm-Nd and Rb-Sr isotopic data show that they could be formed from continental crust magmatic sources with Paleoproterozoic model ages (TNd(DM-2st) = 1.8-2.1 Ga). SHRIMP U-Pb zircon ages of 868-864 Ma were obtained for three samples from the Teya granite and 875 Ma for a sample from the Kalami granite. Together with the previously dated 878 Ma Yeruda granite, these intrusive rocks are the most ancient granites in the Transangara region of the Yenisey Ridge. It is likely that the Teya, Kalami, and Yeruda granites were part of the Central Angara terrane prior to its collision with Siberia at 760-720 Ma.

    KW - Central Asian orogenic belt

    KW - Geochemistry

    KW - Granite

    KW - Siberian craton

    KW - U-Pb SHRIMP geochronology

    KW - Yenisey Ridge

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