Fig. 4From: “Volcanism in the Chugoku region: a review for the first UNESCO field school on Geoenvironmental disaster reduction”Simplified stratigraphic evolution of the SW Japan arc. Individual stages are described in the text. HMA - High Magnesian Andesite, AD - Adakite are hallmarks of subduction initiation of a new young plate. Stage IV shows distinct evolution between for-arc and back-arc. See text for detailed description of individual stages and further readingBack to article page