*Gerd Steinle-Neumann1, Liang Yuan1,2, Akio Suzuki2 (1.Bayerisches Geoinstitut, Universitaet Bayreuth, 2.Department of Earth Science, Tohoku University)
convener:Hidenori Terasaki(Faculty of Science, Okayama University), Eiji Ohtani(Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University), Gerd Steinle-Neumann(Bayerisches Geoinstitut, Universitaet Bayreuth), William F McDonough(Department of Earth Science and Research Center for Neutrino Science, Tohoku University, Sendai, Miyagi 980-8578, Japan)