Fig. 1From: Amphibole–melt disequilibrium in silicic melt of the Aso-4 caldera-forming eruption at Aso Volcano, SW JapanDistribution of Aso-4 pyroclastic deposits and sampling sites (after Ono and Watanabe 1985; Kaneko et al. 2007). Solid lines show the distribution areas of Aso-4 pyroclastic flow units. Dashed lines show the estimated distribution areas of the units (Kaneko et al. 2007)Back to article page