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Pumice rafts that arrived at the Nansei Islands, Japan, provided a unique opportunity to investigate the Fukutoku‐Oka‐no‐Ba (FOB) eruption of August 2021. Despite drifting for 2 months for ~1300 km, the drift pumice raft had a large volume and contained a variety of pumice clasts, some of which were deposited during a high tide in a typhoon, while others were washed up on a sandy beach. Most of the...
Zircon OD‐3 from the Paleogene Kawamoto Granodiorite (Mihara body) in Japan has been identified as a potential multi‐grain secondary standard for U–Pb dating. We have carried out an inter‐laboratory evaluation in order to evaluate possible heterogeneity amongst the OD‐3 zircon grains. U–Pb ages were obtained using two analytical techniques (a sensitive high‐resolution ion microprobe and a laser ablation–inductively...
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