Abstract
I have been determining salinity data from fluid inclusions in mantle perdidotite xenoliths of subduction mantle wedges, and in jadeite-rich rocks in exhumed subduction channels together with my colleagues. I will summary the salinity data from our on-going works and from the previous works for last twenty five years. I will suggest a hypothesis on the saline fluids recycling from the ocean to the volcanoes through the subduction channel and the mantle wedge.