Abstract
The first data of U–Pb isotopic study (LA–ICP–MS method) of zircon from tonalite–granodiorite forming a dominant part of the “trondhjemite” intrusive massif at the giant Tyrnyauz W–Mo deposit (North Caucasus) is presented. The concordant zircon isotopic U–Pb age obtained (302 ± 4 Ma) indicates a Late Paleozoic (Late Carboniferous–Early Permian) age of crystallization of these rocks. This is consistent with the Late Paleozoic epoch of W-bearing magmatism and related W mineralization in the North Caucasus (Peredovoi Ridge) and allows the possibility of the Late Paleozoic age of the large bodies of altered skarn with W mineralization at the Tyrnyauz deposit.
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ACKNOWLEDGMENTS
The authors are grateful to A.V. Tyshkevich (Central Research Institute of Geological Prospecting for Base and Precious Metals) for the collection and preparation of zircon samples.
Funding
This study was supported by the Ministry of Education and Science of the Russian Federation, project no. 075-15-2020-802.
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Translated by A. Bobrov
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Soloviev, S.G., Kryazhev, S.G., Semenova, D.V. et al. Late Paleozoic Age of Intrusive Rocks from the “Trondhjemite” Massif of the Tyrnyauz W–Mo Deposit (North Caucasus, Russia): The First Results of U–Pb Isotope Dating of Zircon (LA–ICP–MS Method). Dokl. Earth Sc. 497, 281–285 (2021). https://doi.org/10.1134/S1028334X21040176
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DOI: https://doi.org/10.1134/S1028334X21040176