[S-CG51] Hard-Rock Drilling Science: Continental and Deep-Sea Drilling, and Ophiolite

Mon. May 26, 2025 1:45 PM - 3:15 PM 106 (International Conference Hall, Makuhari Messe)

convener:Takashi Hoshide(Faculty of International Resource Sciences, Akita University), Yumiko Harigane(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST)), Keishi Okazaki(Earth and Planetary Systems Science Program, Hiroshima University), Chairperson:Yumiko Harigane(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST)), Keishi Okazaki(Earth and Planetary Systems Science Program, Hiroshima University), Takashi Hoshide(Faculty of International Resource Sciences, Akita University)

The International Ocean Discovery Program (IODP) has established the "2050 Science Framework: Exploring Earth by Scientific Ocean Drilling" as a guideline for 2024 and beyond. The International Continental Scientific Drilling Program (ICDP) has already launched a new science plan, "the ICDP Science Plan 2020-2030". Thus, hard rock drilling science is about to enter the next phase. Therefore, drilling proposals from a new perspective and the production of scientific results based on existing drilling projects are expected. In this session, we invite presentations on the scientific results of "hard-rock" such as continental drilling, deep-sea drilling, on-land geological investigations of ophiolites and experimental studies. The session is intended to be interdisciplinary, including the fields of geophysics, geochemistry, petrology, engineering, and biology. This session is organized by the Hard-rock Drilling Science Focus Group.

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1:45 PM - 1:50 PM

[SCG51_26PM1-1add] Introduction

1:50 PM - 2:15 PM

[SCG51-01] Crystal-fabrics and deformation microstructure of the Horoman peridotite: An insight into the lithospheric mantle

★Invited Papers

*Kazuki Matsuyama ^1,2, Katsuyoshi Michibayashi^1,3 (1.Department of Earth and Planetary Sciences, GSES, Nagoya University, 2.Géosciences Montpellier, Université de Montpellier, 3.Volcanoes and Earth's Interior Research Center, IMG, JAMSTEC)

2:15 PM - 2:30 PM

[SCG51-02] Petrological characteristics and tectonic implications of the South Mariana Forearc Ridge peridotites, Mariana Trench

*Kana Miyata¹, Shigeki Uehara², Katsuyoshi Michibayashi^1,3, Yasuhiko Ohara^4,1,3 (1.Department of Earth and Planetary Sciences, GSES, Nagoya University, 2.Institute of Geosciences, Shizuoka University, 3.Volcanoes and Earth's Interior Research Center, IMG, JAMSTEC, 4.Hydrographic and Oceanographic Department of Japan)

2:30 PM - 2:45 PM

[SCG51-03] Oceanic Core Complex as a practical venue for understanding oceanic mantle via scientific ocean drilling

*Yasuhiko Ohara^1,2,3 (1.Hydrographic and Oceanographic Department of Japan, 2.Japan Agency for Marine-Earth Science and Technology, 3.Nagoya University)

2:45 PM - 3:00 PM

[SCG51-04] Tosa Megamullion formed during the early stage of back-arc spreading in the Shikoku Basin, the Philippine Sea

*So Inoue¹, Katsuyoshi Michibayashi^1,2, Yumiko Harigane³, Yasuhiko Ohara^1,2,4 (1.Department of Earth and Planetary Sciences, GSES, Nagoya University, 2.Volcanoes and Earth's Interior Research Center, IMG, JAMSTEC, 3.Research Institute of Geology and Geoinformation, Geological Survey of Japan, AIST, 4.Hydrographic and Oceanographic Department of Japan)

3:00 PM - 3:15 PM

[SCG51-05] Formation of lower oceanic crust along Marie Celeste Transform Fault at the Réunion hotspot-influenced Central Indian Ridge

*Kohei Nimura¹, Takaaki Moriguchi², Norikatsu Akizawa³, Shiki Machida⁴, Kyoko Okino⁵, Katsuyoshi Michibayashi^1,6 (1.Department of Earth and Planetary Sciences, GSES, Nagoya University, 2.Kawasaki Geological Engineering Co., Ltd., 3.Graduate School of Advanced Science and Engineering, Hiroshima University, 4.Ocean Resources Research Center for Next Generation, Chiba Institute of Technology, 5.tmosphere and Ocean Research Institute, The University of Tokyo, 6.Volcanoes and Earth's Interior Research Center, IMG, JAMSTEC)

Session information