Serpentine mélange

Overview

Various tectonic blocks are included in a matrix of serpentine. Tectonic blocks are composed of granitoids, volcanic rocks, rocks of accretionary complexes, and high-T metamorphic rocks of various ages. Age of tectonic blocks are older than that of host rocks of serpentine mélange.

Serpentine mélanges distribute as bands along accretionary complexes.

Red: Nagato-Renge Belt, Black: Kurosegawa Belt, Purple: Hayachine-Miyamori Belt,

where Hayachine-Miyamori Belt is considered as a part of Nagato-Renge Belt.