Japan Geoscience Union Meeting 2016

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International Session (Oral)

Symbol S (Solid Earth Sciences) » S-IT Science of the Earth's Interior & Techtonophysics

[S-IT09] Hard-Rock Drilling: Oceanic Lithosphere to Continental Crust Formation

Mon. May 23, 2016 9:00 AM - 10:30 AM Convention Hall A (2F)

Convener:*Yoshihiko Tamura(R & D Center for Ocean Drilling Science, Japan Agency for Maine-Earth Science and Technology), Tomoaki Morishita(School of Natural System, Colleage of Science and Technology, Kanazawa University), Susanne Straub(Lamont-Doherty Earth Observatory, Columbia Univ., USA), Takashi Sano(Department of Geology and Paleontology, National Museum of Nature and Science), Susumu Umino(Department of Earth Sciences, Kanazawa University), Eiichi TAKAZAWA(Department of Geology, Faculty of Science, Niigata University), Katsuyoshi Michibayashi(Institute of Geosciences, Shizuoka University), Chair:Tomoaki Morishita(School of Natural System, Colleage of Science and Technology, Kanazawa University), Katsuyoshi Michibayashi(Institute of Geosciences, Shizuoka University)

A limited number of IODP expeditions have been conducted for hard-rock drilling for the last decade including most recent expeditions investigating the northern Izu-Bonin-Mariana (IBM) subduction system during 2014 (Expeditions 350, 351 and 352). In this session, we review the current status of our understanding for oceanic lithosphere and continental crust formation or anything important beyond and discuss significant issue to be answered by up-coming/future hard-rock drilling, which include Mohole and IBM-4 drilling into continental crust in the oceanic arc. The session invites contributions from interdisciplinary field ranging from geophysics, geochemistry, petrology, engineering and biology working on hard-rock cores/samples from the expeditions or any other research vessels as well as ICDP and on-land geology such as ophiolites. Results from the three IBM Expeditions are also welcome.

9:15 AM - 9:30 AM

[SIT09-02] Izu-Bonin-Mariana Arc basement from IODP Exp. 351(Amami Sankaku Basin)

★Invited papers

*Osamu Ishizuka1, Rosemary Hickey-Vargas2, Gene Yogodzinki3, Masafumi Sudo4, Anders McCarthy5, Ivan Savov6, Yuki Kusano1, Richard Arculus7, Kara Bogus8 (1.Geological Survey of Japan, AIST, 2.Florida International University, 3.University of South Carolina, 4.Universitaet Potsdam, 5.University of Lausanne, 6.University of Leeds, 7.Australian National University, 8.Texas A&M University)

9:30 AM - 9:45 AM

[SIT09-03] Physical properties of fore-arc basalt and boninite recovered by IODP EXP352 and its significance for the seismic velocity structure in the oceanic crust

*Katsuyoshi Michibayashi1, Mutsumi Honda2, Yuzuru Yamamoto3, Nana Kamiya4, Tetsuya Sakuyama5, Tohru Watanabe6 (1.Institute of Geosciences, Shizuoka University, 2.Graduate School of Integrated Science and Technology, Shizuoka University, 3.Department of Mathematical Science and Advanced Technology, JAMSTEC, 4.Graduate School of Integrated Sciences, Nihon University, 5.Faculty of Science, Osaka City University, 6.Gradudate School of Science and Engineering, University of Toyama)

10:00 AM - 10:15 AM

[SIT09-05] Preliminary reports on the Nature of the Lower Crust and Moho at Slower Spreading Ridges (SloMo)

Henry J.B. Dick2, Christopher J. MacLeod3, Peter Blum4, *Tomoaki Morishita1, Natsue Abe5, Toshio Nozaka8, Alessio Sanfilppo1,6, Scientific Party Expedition 3607 (1.Kanazawa University, 2.Woods Hole Oceanographic Institute, 3.Cardiff University, 4.Texas A & M University, 5.JAMSTEC, 6.University of Pavia, 7.Expedition 360 Scientific Party, 8.Okayama University)

10:15 AM - 10:30 AM

[SIT09-06] Lord Howe Rise Drilling: Deep stratigraphic record for the Cretaceous eastern Gondwana margin

★Invited papers

*Saneatsu Saito1, Ron Hackney2, Yasuhiro Yamada1, Kliti Grice3, Junichiro Kuroda1, Jessica Whiteside4, Marco Coolen3, Fumio Inagaki1, Richard Arculus5, Dietmar Müller6 (1.Japan Agency for Marine-Earth Science and Technology, 2.Geoscience Australia, 3.Curtin University, 4.University of Southampton, 5.Australian National University, 6.University of Sydney)