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Albian–Cenomanian Granitoid Magmatism and Copper Ore Genesis in Sikhote-Alin (Far East, Russia)

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Abstract

The Late Albian–Early Cenomanian epoch of Au-Cu porphyry ore mineralization has been distinguished within the Sikhote-Alin. The development of ore mineralization is associated with Albian–Cenomanian granitoids, synchronous to syn-strike-slip orogenesis and the formation of the continental lithosphere in the setting of transform continental margins. The development of Au–Mo–Cu and Cu–Au–W types of ore mineralization in the terrains of the Jurassic accretionary prism and the Early Cretaceous terrain of the epioceanic turbidite basin, correspondingly, was induced with the mantle–crustal synorogenic intrusions of granitoids. The U–Pb zircon dates (100–95 Ma, Albian–Cenomanian) of Au–Cu porphyry Malmyzh granitoids are given for the first time. The similar data available on the age of granitoids in Eastern and Southeastern Asia, which are associated with plutonogenic–hydrothermal deposits of Cu, Au, Sn and other metals, allow us to suggest that there is an Albian–Cenomanian metallogenic megabelt extending along the entire Pacific continental margin of Asia.

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Funding

This work was supported by the program “The Far East” 2018–2020, project no. 18–2–015.

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Correspondence to V. V. Ivanov.

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Translated by D. Voroshchuk

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Khanchuk, A.I., Ivanov, V.V., Ignatiev, E.K. et al. Albian–Cenomanian Granitoid Magmatism and Copper Ore Genesis in Sikhote-Alin (Far East, Russia). Dokl. Earth Sc. 488, 1055–1058 (2019). https://doi.org/10.1134/S1028334X19090253

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  • DOI: https://doi.org/10.1134/S1028334X19090253

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