Abstract
The Izu Peninsula and its surrounding area, central Japan represent an arc-arc collision zone. This area is the region of ongoing arc-arc collision between the Izu arc, (=intra-oceanic island) and Honshu arc since the middle Miocene. The arc-arc collision zone provides a lot of significant information to understand the process of an arc-arc collision. We described a framework composition of modern beach sand in the arc-arc collision zone based on the characteristics of petrofacies. The provenance compositional field astriding the boundary line between undissected arc and lithic recycled represent a particular tectonic setting of the arc-arc collision between the Izu Peninsula and the Shimanto accretional prism.
