The “Upper Basalts” of the East Chukotka Segment of Okhotsk–Chukotka Belt: the Along Strike Migration of Volcanic Activity or the Overprint by Later Magmatic Event?

P. L. Tikhomirov; I. E. Lebedev; A. M. Pasenko; F. J. L. Lhuillier; D. V. Alekseev; V. E. Pavlov

doi:10.1134/S1028334X21120151

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The “Upper Basalts” of the East Chukotka Segment of Okhotsk–Chukotka Belt: the Along Strike Migration of Volcanic Activity or the Overprint by Later Magmatic Event?

Authors

Tikhomirov, P. L.^{1, 2}
Lebedev, I. E.¹
Pasenko, A. M.¹
Lhuillier, F. J. L.³
Alekseev, D. V.⁴
Pavlov, V. E.¹

¹ Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, 119991, Russia , Moscow (Russia)
² Shilo North-East Interdisciplinary Scientific Research Institute, Far East Branch, Russian Academy of Sciences, Magadan, 685000, Russia , Magadan (Russia)
³ Ludwig Maximillian University, Munich, Germany , Munich (Germany)
⁴ Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia , Novosibirsk (Russia)

Type

Published Article

Journal

Doklady Earth Sciences

Publisher

Pleiades Publishing

Publication Date

Dec 30, 2021

Volume

501

Issue

2

Pages

1038–1042

Identifiers

DOI: 10.1134/S1028334X21120151

Source

Springer Nature

Keywords

Disciplines

Volcanology

License

Yellow

Abstract

AbstractNew U–Pb and 40Ar/39Ar isotopic dates on volcanic rocks of the East Chukotka segment of the Okhotsk–Chukotka Belt correspond to 76–71 Ma span, which is partially beyond the conventional lifetime of this volcanic province. This could result from the migration of magmatic loci along the strike of the volcanic belt, and/or from the overprint by a younger magmatic event.

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