Rock and sediment dataset of petit-spots in the northwestern Pacific
Norikatsu Akizawa,
Naoto Hirano,
Shiki Machida,
Akira Ishikawa,
Yuka Niwa,
Gen Shimoda,
Kazutaka Yasukawa,
Kenji M. Matsuzaki,
Chiori Tamura,
Junji Kaneko
Affiliations
Norikatsu Akizawa
Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8564, Japan; School of Natural Sciences, Macquarie University, Sydney, New South Wales 2109, Australia; Corresponding author.
Naoto Hirano
Center for NE-Asian Studies, Tohoku University, 41, Kawauchi, Aobaku, Sendai, Miyagi 980-8576, Japan
Shiki Machida
Ocean Resources Research Center for Next Generation, Chiba Institute of Technology, 2-17-1, Tsudanuma, Narashino, Chiba 275-0016, Japan
Akira Ishikawa
Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro, Tokyo 152-8550, Japan
Yuka Niwa
Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro, Tokyo 152-8550, Japan
Gen Shimoda
Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8567, Japan
Kazutaka Yasukawa
Frontier Research Center for Energy and Resources, School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo, Tokyo 113-8656, Japan
Kenji M. Matsuzaki
Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8564, Japan
Chiori Tamura
Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8564, Japan
Junji Kaneko
Submarine Resources Research Center, Japan Agency for Marine-Earth Science and Technology, 2-15, Natsushima, Yokosuka, Kanagawa 237-0061, Japan
Rock and sediment samples were collected from petit-spots in the northwestern Pacific. The sampling was conducted using deep-submergence vehicle (DSV) Shinkai 6500 and its mother ship, research vessel (RV) Yokosuka during YK20-14S and YK21-07S cruises. The collected rock samples are basalt and peperite. Some of the basalts include small mantle xenoliths (∼3 cm in diameter). The dataset of rock and sediment samples from the petit-spots located on >130 Ma northwestern Pacific plate are presented herein. The peperites are a reaction product between petit-spot magma and wet sediment, and the mantle xenoliths are fragmented mantle materials transported by the petit-spot magmas. Therefore, the petit-spot samples are of significant importance to elucidate modification process of the surface condition by petit-spot magma and to characterize the deep lithospheric mantle. The dataset presented herein provides in a sense a unique insight into the whole Pacific plate just before its subduction beneath the Japan arc.
