[S-CG46] Hard-Rock Drilling Science: From Continental to Deep Sea Drilling, and Oman Project

Wed. Jun 1, 2022 11:00 AM - 1:00 PM Online Poster Zoom Room (27) (Ch.27)

convener:Sayantani Chatterjee(Niigata University, Department of Geology, Faculty of Science), convener:Katsuyoshi Michibayashi(Department of Earth and Planetary Sciences, Nagoya University), Eiichi TAKAZAWA(Department of Geology, Faculty of Science, Niigata University), Chairperson:Sayantani Chatterjee(Niigata University, Department of Geology, Faculty of Science), Katsuyoshi Michibayashi(Department of Earth and Planetary Sciences, Nagoya University), Eiichi TAKAZAWA(Department of Geology, Faculty of Science, Niigata University)

The IODP and ICDP drilling expeditions including Oman Drilling Project have drilled numerous hard-rock cores of ancient oceanic lithosphere and the underlying subduction zone. In this session, we invite presentations on the scientific results of Hard-Rock drilling. We also invite related studies of 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. Co-sponsored by Hard Rock Drilling Science Focus Group.

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11:00 AM - 1:00 PM

[SCG46-P01] Formation of brucite reaction zone with antigorite veins from the Oman ophiolite and its comparison with hydrothermal experiments.

★Invited Papers

*Kazuki Yoshida¹, Ryosuke Oyanagi^2,3, Atsushi Okamoto¹ (1.Tohoku university, 2.Kokushikan University, 3.Japan Agency for Marine-Earth Science and Technology (JAMSTEC))

11:00 AM - 1:00 PM

[SCG46-P02] Spatial variability of serpentinization in the Salahi mantle section, the Oman Ophiolite

*Yohki YOSHIBA¹, Eiichi TAKAZAWA^2,3, Main Tokinaga¹ (1.Graduate School of Science and Technology of Niigata University, 2.Department of Geology, Faculty of Science, Niigata University, 3.Japan Agency for Marine-Earth Science and Technology)

11:00 AM - 1:00 PM

[SCG46-P03] Simultaneous measurements of resistivity, seismic velocity and porosity of mafic samples collected from the Oman ophiolite during hydrostatic compressional experiments

*tanimoto kazumasa¹, Yuya Akamatsu¹, Ikuo Katayama¹ (1.Hiroshima University)

11:00 AM - 1:00 PM

[SCG46-P04] Inversely depleted forearc mantle section records the subduction zone infancy: Umigame Seamount, Bonin Trench

*Katsuyoshi Michibayashi^1,2, Suzu Saito⁸, Kakihata Yuki¹, Yumiko Harigane³, Atsushi Okamoto⁴, Ryosuke Oyanagi⁵, Kohei Hatakeyama^6,7, Ikuo Katayama⁶, Osamu Ishizuka³, Shigeaki Ono² (1.Nagoya University, 2.JAMSTEC, 3.GSJ/AIST, 4.Tohoku University, 5.Kokushikan University, 6.Hiroshima University, 7.Meisei University, 8.Shizuoka University)

11:00 AM - 1:00 PM

[SCG46-P05] DSeis Report 2 Chemical and physical property of the mafic/ultramafic adjacent dykes accompanying aftershocks and hypersaline brine in deep and non-meteoric water environment

*seiya ohba¹, Masaya Wakimoto¹, kaoru fujita¹, Kotaro OGAWA¹, Hiroshi Ogasawara¹, Yasuo Yabe², Takuya Matsuzaki³, Yuhji Yamamoto³, Team DSeis (1.Ritsumeikan university, 2.Tohoku University, 3.Kochi University)

11:00 AM - 1:00 PM

[SCG46-P06] DSeis Report 3: Spatial variation in seismic velocity in downhole sonic log and core measurements for the mafic/ultramafic adjacent dikes accompanying aftershocks and hypersaline brine in deep and non-meteoric water environment

*kaoru fujita¹, Hiroshi Ogasawara¹, Yasuo Yabe², Yuhji Yamamoto³, Team DSeis (1.Ritsumeikan University, 2.Tohoku University, 3.Kochi University)

Session information

[S-CG46] Hard-Rock Drilling Science: From Continental to Deep Sea Drilling, and Oman Project

[SCG46-P01] Formation of brucite reaction zone with antigorite veins from the Oman ophiolite and its comparison with hydrothermal experiments.

★Invited Papers

[SCG46-P02] Spatial variability of serpentinization in the Salahi mantle section, the Oman Ophiolite

[SCG46-P03] Simultaneous measurements of resistivity, seismic velocity and porosity of mafic samples collected from the Oman ophiolite during hydrostatic compressional experiments

[SCG46-P04] Inversely depleted forearc mantle section records the subduction zone infancy: Umigame Seamount, Bonin Trench

[SCG46-P05] DSeis Report 2 Chemical and physical property of the mafic/ultramafic adjacent dykes accompanying aftershocks and hypersaline brine in deep and non-meteoric water environment

[SCG46-P06] DSeis Report 3: Spatial variation in seismic velocity in downhole sonic log and core measurements for the mafic/ultramafic adjacent dikes accompanying aftershocks and hypersaline brine in deep and non-meteoric water environment

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