Evaluation of Caldera Hosted Geothermal Potential during Volcanism and Magmatism in Subduction System, NE Japan

Figure 2

Melt inclusions (MIs) from Fukano Caldera. (a) Quartz crystal from the northern part of the caldera showing large, round colorless glassy inclusions in sample 160804-5 (Table 1 and Table 2). (b) Quartz crystals from the southern part showing rounded, dark crystalline inclusions in sample 160411-1a (Table 1 Table 2). The hourglass-type inclusions observed in the samples were not analyzed (see text for details).

(a)

(b)