Granites of the middle jurassic Ariadne ultrabasite-basite intrusion in the jurassic accretion prism (Sikhote-Alin, Russia)
- Authors: Khanchuk A.I.1, Molchanov V2, Golich A.N.2
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Affiliations:
- Far East Geological Institute, FEB RAS
- Far Eastern geological Institute of the far Eastern branch of the RAS
- Issue: Vol 525, No 1 (2025)
- Section: GEOCHEMISTRY
- Submitted: 05.07.2025
- Accepted: 14.07.2025
- Published: 20.08.2025
- URL: https://journal-vniispk.ru/2686-7397/article/view/299323
- ID: 299323
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Abstract
The first geochronological and petrogeochemical data on the Middle Jurassic granites of the metalliferous Ariadna ultrabasic-basite intrusion of the Sikhote-Alin orogenic belt are presented. These granites with U-Pb zircon ages of 165.2 ± 1.1 and 165.48 ± 1.1 million years are highly differentiated A-type rocks formed as a result of melting of terrigenous rocks during the introduction of an ultrabasite-basite OIB melt into an accretion prism. The results obtained confirm the hypothesis of a possible rise of asthenospheric material from under a sinking oceanic plate in an unusual geodynamic setting.
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About the authors
Alexander I. Khanchuk
Far East Geological Institute, FEB RAS
Email: axanchuk@mail.ru
ORCID iD: 0000-0003-0226-1493
SPIN-code: 5257-5426
Academician of RAS, Principal Adviser
Russian Federation, VladivostokV Molchanov
Far Eastern geological Institute of the far Eastern branch of the RAS
Author for correspondence.
Email: vpmol@mail.ru
ORCID iD: 0000-0001-7206-356X
Candidate of geological and mineralogical sciences, leading researcher, laboratory of nonlinear metallogeny
Russian Federation, 159 Prospekt 100-letiya Vladivostoka, Vladivostok, 690022, RussiaAlexey Nikolaevich Golich
Far Eastern geological Institute of the far Eastern branch of the RAS
Email: agolich@mail.ru
ORCID iD: 0000-0001-7759-9080
к.г.-м.н., м.н.с., лаборатория общих и синхротронных методов
Russian Federation, 159 Prospekt 100-letiya Vladivostoka, Vladivostok, 690022, Russia
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