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The Early Ordovician Alkaline-Ultramafic Zhilandy Complex of Central Kazakhstan: Structure and Geochronology

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Abstract

The first U–Pb dating of amphibole-bearing quartz monzodiorites from the alkaline-ultramafic Zhilandy Pluton in Central Kazakhstan gave an Early Ordovician age of 479 ± 3 Ma. The data obtained allow confident recognition of three stages of intraplate magmatism in the western part of the Central Asian Orogenic Belt: Late Neoproterozoic with intrusion of alkaline syenites of the Karsakpai Complex; Early Cambrian with emplacement of ultramafic–gabbro plutons of the Ulutau Complex; and late Cambrian–Early Ordovician with formation of the Zhilandy Pluton and the intrusions of the Krasnomai Complex.

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ACKNOWLEDGMENTS

This study was funded by the Russian Science Foundation, project no. 14–27–00058.

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Authors and Affiliations

  1. LLP Tsentrgeolsemka, Karaganda, Republic of Kazakhstan

    R. M. Antonyuk

  2. Geological Institute, Russian Academy of Sciences, 119017, Moscow, Russia

    A. A. Tretyakov &  K. E. Degtyarev

  3. Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences, 199034, St. Petersburg, Russia

    A. B. Kotov

Authors
  1. R. M. Antonyuk
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  2. A. A. Tretyakov
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  3. K. E. Degtyarev
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  4. A. B. Kotov
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Corresponding author

Correspondence to K. E. Degtyarev.

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Translated by A. Larionov

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Antonyuk, R.M., Tretyakov, A.A., Degtyarev, K.E. et al. The Early Ordovician Alkaline-Ultramafic Zhilandy Complex of Central Kazakhstan: Structure and Geochronology. Dokl. Earth Sc. 484, 1–6 (2019). https://doi.org/10.1134/S1028334X1901001X

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  • DOI: https://doi.org/10.1134/S1028334X1901001X

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