[S-CG42] Hard-Rock Drilling Science: Continental and Deep-Sea Drilling, and Ophiolite

Tue. May 28, 2024 9:00 AM - 10:15 AM 104 (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:Takashi Hoshide(Faculty of International Resource Sciences, Akita University), Keishi Okazaki(Earth and Planetary Systems Science Program, Hiroshima University), Yumiko Harigane(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST))

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.

+Add all to schedule

9:00 AM - 9:15 AM

[SCG42-01] Seismic anisotropy in the Horoman peridotites calculated from crystal-fabrics of olivine, orthopyroxene, and clinopyroxene

*Kazuki Matsuyama ¹, Katsuyoshi Michibayashi¹ (1.Department of Earth and Planetary Sciences, GSES, Nagoya University)

9:15 AM - 9:30 AM

[SCG42-02] Legacy of mantle fabrics preserved within heavily serpentinized peridotites in BA3A cores of Oman Drilling Project

*Katsuyoshi Michibayashi^1,2, Natsume Itsuki^1,3 (1.Department of Earth and Planetary Sciences, GSES , Nagoya University, 2.Volcanoes and Earth's Interior Research Center, IMG, JAMSTEC, 3.Kanagawa Prefectural Museum of Natural History)

9:30 AM - 9:45 AM

[SCG42-03] Sector zoned clinopyroxene in the lower crustal gabbros from the Oman Ophiolite: An indicator of the degrees of supercooling and cooling rate

*Susumu Umino¹, Trinh Nguyen¹, Akihiro Tamura¹, Yuki Kusano², Norikatsu Akizawa³, Osamu Ishizuka², Takahiro Fudai⁶, Sumio Miyashita⁴, Yoshiko Adachi⁵, Tomoaki Morishita¹ (1.School of Geosciences and Civil Engineering, Kanazawa University, 2.Geological Survey of Japan, AIST, 3.Atmosphere and Ocean Research Institute, The University of Tokyo, 4.Hokkaido Research Center of Geology, 5.Central Research Institute of Electric Power Industry (CRIEPI), 6.Taiheiyo Cement)

9:45 AM - 10:00 AM

[SCG42-04] An initial result of IODP Exp399 Building Blocks of Life: serpentinite and gabbro drilling in the Atlantis Massif, MAR 30 degree N.

*Natsue Abe^1,2, Toshio Nozaka³, Kristine Dickenson⁴, Jeremy Deans⁵, Andreq McCaig⁶, Susan Lang⁷, Peter Blum⁸, IODP Exp.399 Science Party⁸ (1.Japan Agency for Marine-Earth Science and Technology , 2.Graduate School of Natural Science& Technology, Kanazawa University, 3.Okayama University, 4.University of California, Santa Cruz, 5.University of Southern Mississippi, 6.University of Leeds, 7.Woods Hole Oceanographic Institution, 8.IODP, Texas A&M University)

10:00 AM - 10:15 AM

[SCG42-05] Deformation associated with compositional change of plagioclase in gabbroic rocks in Mado Megamullion, the Shikoku Basin, Philippine Sea

★Invited Papers

*Kohei Nimura¹, 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)

Session information