Magmatism and tectonic setting of proto-Japan during the Early Carboniferous: Constraints from the geochemical characteristics of mafic volcanic rocks in the Hida Gaien Belt, SW Japan

Yusuke Shimura,Kazuhiro Tsukada,Koshi Yamamoto,Bayart Nadmid

Journal of Asian Earth Sciences（2022）

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摘要

•Early Carboniferous subduction-related basalts–andesites are found in SW Japan.•High-Al basalts were generated by arc tholeiitic magma near crust–mantle boundary.•Basaltic andesites were generated by fractional crystallization of the high-Al magma.•Early Carboniferous tectonic setting of proto-Japan was a primitive island arc.

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关键词

Geochemistry,Carboniferous,High-Al,Island arc tholeiite,Hida Gaien,SW Japan

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