5:15 PM - 5:30 PM
[BPT23-25] Resource potential of REY-rich mud in the Japanese Exclusive Economic Zone (EEZ) around Minamitorishima Island
Keywords:Minamitorishima EEZ, REY-rich mud, extremely REY-rich mud layers, deep-sea mineral resources, resource potential
In order to obtain a detailed knowledge of the distribution of REY-rich mud in the Minamitorishima EEZ, four research cruises (KR13-02, MR13-E02 Leg 2, KR14-02, and MR14-E02) have been conducted from 2013 to 2014. As a result, the presence of "extremely REY-rich mud" (that shows total REY content higher than 5,000 ppm) has been confirmed in the southern area of the Minamitorishima EEZ (Kato et al., 2013; Fujinaga et al., 2013; Suzuki et al., 2013). The extremely REY-rich mud layers can be found at the depths shallower than 10 meters below the seafloor, which should be favorable to development of this REY resource.
In this study, assuming the southern area of the Minamitorishima EEZ as the most promising area for the exploitation in the near future, we evaluate the resource potential of the REY-rich mud, including the extremely REY-rich mud layers, in this area.