A cristobalite-bearing syenitic enclave in a drift pumice derived from the 2021 eruption of Fukutoku-Oka-no-Ba
Kenta K. YOSHIDA,
Hikaru SAWADA,
Yu MARUYA
et al.
Abstract:The 2021 eruption of Fukutoku-Oka-no-Ba (FOB), which is a submarine volcano located at the southern end of the Izu-Ogasawara arc, produced a large number of pumice clasts that drifted to many places in the islands of Japan and eastern Asia. Amongst the typical gray pumice clasts, several peculiar clasts have been discovered, such as those with a black coloration and containing mafic enclaves. This study found a mostly bimineralic enclave consisting of plagioclase phenocrysts and an alkali feldspar matrix, with… Show more
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