Abstract
U–Pb and 40Ar/39Ar age data obtained for volcanic rocks of the Okhotsk–Chukotka Belt in the headwaters of the Malyi Anyui River (the vicinity of Kupol deposit) indicate at least two main pulses of volcanic activity, 98–93 Ma and 90–84 Ma. The conventional stratigraphic models are not consistent with the new data on the age and composition of volcanic units. The spatial relations between volcanic complexes of different ages imply that volcanic units accumulated under conditions of dissected topography. In the absence of obvious petrographic distinctions between the volcanic sequences of different ages, the composition of detailed geological and paleovolcanological maps requires representative precise isotopic age data.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
V. V. Akinin and E. L. Miller, Petrology 19 (3), 237–278 (2011).
V. V. Akinin, B. Thomson, and G. O. Polzunenkov, in Proc. 6th Russian Conf. on Isotopic Geochronology (Institute of Precambrian Geology and Geochronology RAS, St. Petersburg, 2015), pp. 19–21 [in Russian].
V. F. Belyi, Okhotsk-Chukotka Volcanogenic Belt: Stratigraphy and Structures (Nauka, Moscow, 1977) [in Russian].
A. V. Volkov, V. Yu. Prokof’ev, N. E. Savva, A. A. Sidorov, M. A. Byankin, K. V. Uyutnov, and E. E. Kolova, Geol. Ore Deposits 54 (4), 295–304 (2012).
A. N. Glukhov, Vestn. Sev.-Vost. Nauchn. Tsentra Dal’nevost. Otd. Ross. Akad. Nauk, No. 3, 34–45 (2008).
I. N. Kotlyar, Au–Ag Ore Potential of the Okhotsk-Chukotka Belt (Nauka, Moscow, 1986) [in Russian].
Decisions of the 3rd Interagency Stratigraphy Meeting of Precambrian, Paleozoic and Mesozoic of Russian North-East (St. Petersburg, 2002) (Izd. A. P. Karpinsky Russian Geological Research Institute, St. Petersburg, 2009) [in Russian].
P. L. Tikhomirov, Cretaceous Boundary-Continental Magmatism of Asian North-East and Genesis Problems of the Biggest Phanerozoic Provinces of Siliceous Volcanism (GEOS, Moscow, 2020) [in Russian].
P. L. Tikhomirov, V. V. Akinin, and E. Nakamura, Dokl. Earth Sci. 419 (2), 261–266 (2008).
P. L. Tikhomirov, V. V. Akinin, V. O. Ispolatov, P. Alexander, I. Yu. Cherepanova, and V. V. Zagoskin, Stratigr. Geol. Correl. 14 (5), 524–538 (2006).
A. V. Travin, D. S. Yudin, A. G. Vladimirov, S. V. Khromykh, N. I. Volkova, A. S. Mekhonoshin, and T. B. Kolotilina, Geochem. Int. 47 (11), 1107–1125 (2009).
S. V. Shczepetov, A. B. Herman, P. L. Tikhomirov, A. V. Moiseev, S. D. Sokolov, and Y. Hayasaka, Stratigr. Geol. Correl. Stratigr. Geol. Correl. 28 (4), 429–445 (2020).
F. Gradstein, J. Ogg, and A. A. Smith, Geologic Timescale (Univ. Press, Cambridge, 2004).
S. Schuth, V. I. Gornyy, J. Berndt, S. S. Shevchenko, A. F. Karpuzov, and T. Mansfeldt, Int. J. Geosci. 3, 289–296 (2012).
P. L. Tikhomirov, E. A. Kalinina, T. Moriguti, A. Makishima, K. Kobayashi, I. Yu. Cherepanova, and E. Nakamura, J. Volcanol. Geotherm. Res. 221–222, 14–32 (2012).
P. Vermeesh, Geosci. Front. 9, 1479–1493 (2018).
Funding
This study was supported by the Russian Science Foundation (project no. 19-47-04110) and DFG (LH55/5-1); the work by P.L. Tikhomirov on interpreting the results was performed within the framework of a State Assignment of Shilo North-East Interdisciplinary Scientific Research Institute, Far East Branch, Russian Academy of Sciences (project no. 121031700312-1).
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated by L. Mukhortova
Rights and permissions
About this article
Cite this article
Tikhomirov, P.L., Lebedev, I.E., Lhuillier, F.J. et al. Stratigraphy of the Okhotsk–Chukotka Belt in the Headwaters of the Malyi Anyui River (the Vicinity of Kupol Deposit): U–Pb and 40Ar/39Ar Age Data. Dokl. Earth Sc. 501, 1059–1064 (2021). https://doi.org/10.1134/S1028334X2112014X
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1028334X2112014X