This belt is located in the Outer Zone of Southwest Japan, and is closely associated with the Jurassic accretionary complex of the Chichibu Belt. It is regarded as serpentinous mélange, including various types of rocks, such as low temperature high-pressure metamorphic rocks, granites, as well as Paleozoic and Mesozoic formations. The main components of this belt are the Terano low-temperature and high-pressure metamorphic rocks (400 Ma), the Mitaki Granite (about 440 Ma) and Silurian to Devonian, Carboniferous to Permian and Triassic to Cretaceous formations. The Paleozoic to Mesozoic formations are correlated with some components of the South Kitakami Belt. The low-temperature and highpressure metamorphic rocks are the same as those found in the Nagato-Renge Belt. The sepentinous matrix was originally derived from the Oeyama Ophiolite.