Timing of Neogene Manganese Deposit Formation in the Paleo-Japan Sea, northeast Japan

Takashi Ito1, Yuji Orihashi2, Yukio Yanagisawa3, Shiono Sakai4, Isao Motoyama5, Shin-ichi Kamikuri1, Kosei Komuro6 and Katsuhiko Suzuki7, (1)Ibaraki University, Faculty of Education, Mito, Japan, (2)Earthquake Research Institute, University of Tokyo, Tokyo, Japan, (3)AIST - National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan, (4)Kyushu University, Fukuoka, Japan, (5)Yamagata University, Yamagata, Japan, (6)University of Tsukuba, Tsukuba, Japan, (7)JAMSTEC, Yokosuka Kanagawa, Japan