1. Faculty of Science Dept of Earth and Planetary Sciences, University of Tokyo
2. Present address: Japan Science and Technology Agency
3. GEOWINDOW Co. Ltd.
4. Graduate School of International Resource Sciences, Akita University
5. Graduate School of Science, Tohoku University
6. Faculty of Advanced Science and Technology, Kumamoto University
7. Present address: Geological Survey of Japan, AIST
8. School of Agriculture, Meiji University