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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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