Additional file 1 of Pre-eruption magmatic processes and magma plumbing system at Hachijo-Nishiyama volcano, Izu–Bonin arc, Japan

Additional file 1: Table S1. Results of the XRF analyses for representative samples from the Hachijo-Nishiyama volcano. Table S2. Results of the ICP–MS analyses for a subset of 25 selected samples from the Hachijo-Nishiyama volcano. Table S3. Results of the Sr–Nd–Pb isotopic analyses for a subset of 25 selected samples from the Hachijo-Nishiyama volcano. Table S4. Modal compositions of representative samples from the Hachijo-Nishiyama volcano. Table S5. Temperature and pressure conditions estimated using the two-pyroxene geothermobarometry.