Granites of the Middle Jurassic Ariadnenskii Ultrabasite-Basite Intrusion in the Jurassic Accretionary Prism (Sikhote-Alin, Russia)
The paper presents first geochronological and petrogeochemical data on the Middle Jurassic granites of the metalliferous Ariadnenskii ultrabasite-basite intrusion in the Sikhote-Alin Orogenic Belt. These granites with U–Pb zircon ages of 165.2 ± 1.1 and 165.48 ± 1.1 Ma are highly differentiated A-type rocks formed as a result of the melting of terrigenous rocks during the intrusion of an ultrabasite-basite OIB melt into an accretionary 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.
Authors
- В. П. Молчанов (ORCID: https://orcid.org/0000-0001-7206-356X)
- А. И. Ханчук (ORCID: https://orcid.org/0000-0003-0226-1493)
- A. N. Golich (ORCID: https://orcid.org/0000-0001-7759-9080)
Institutions
- Far East Geological Institute (RU)
Publication Details
- Journal
- Doklady Earth Sciences
- Published
- 2025-10-02
- DOI
- https://doi.org/10.1134/s1028334x25608272
- Primary Topic
- Geological and Geochemical Analysis
- Type
- article
- Field-Weighted Citation Impact
- 0.00