Japan Geoscience Union Meeting 2019

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[E] Oral

S (Solid Earth Sciences ) » S-CG Complex & General

[S-CG49] Hard-Rock Drilling Science: From Continental to Deep Sea Drilling, and Oman Project

Tue. May 28, 2019 9:00 AM - 10:30 AM A07 (TOKYO BAY MAKUHARI HALL)

convener:Katsuyoshi Michibayashi(Department of Earth and Planetary Sciences, Nagoya University), Eiichi TAKAZAWA(Department of Geology, Faculty of Science, Niigata University), Norikatsu Akizawa(Department of Ocean Floor Geoscience, Atmosphere and Ocean Research Institute, The University of Tokyo), Chairperson:Eiichi Takazawa(Niigata University), Norikatsu Akizawa(AORI The University of Tokyo)

The Oman Drilling Project (OmDP) has completed to drill numerous hard-rock cores within ancient oceanic lithosphere and the underlying subduction zone of the Samail ophiolite in Oman, with support from ICDP, IODP, Japan Society for the Promotion of Science, the Sloan Foundation's Deep Carbon Observatory, US, and European research agencies. Moreover, a number of IODP expeditions have focused on hard-rock drilling over the last several years including Expedition 352 in 2014, which drilled the volcanic sequence associated with subduction initiation in the Bonin fore-arc, Expedition 357, which drilled the Lost City hydrothermal field, Expedition 360, which drilled the lithosphere associated with ultraslow-spreading at the Southwest Indian Ridge in 2016, and Expedition 366, which drilled the serpentinite seamounts in the Mariana fore-arc. In this session, we invite presentations on the scientific results of hard-rock drilling at these and other sites. We also invite related presentations on oceanic lithosphere, island arc formation, and any other significant issue that could be addressed by future hard-rock drilling. This includes marine studies of oceanic lithosphere and on-land geological investigations of ophiolites, accreted arcs, and subduction complexes. The session is intended to be interdisciplinary, including the fields of geophysics, geochemistry, petrology, engineering, and biology.

9:00 AM - 9:15 AM

[SCG49-06] Melt transport and compositional heterogeneity of the mantle: a case study of peridotite, dunite, and wehrlite from Atlantis Massif

*Norikatsu Akizawa1, Gretchen L. Früh-Green2, Akihiro Tamura3, Chiori Tamura1, Tomoaki Morishita3 (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Department of Earth Sciences, Eidgenössische Technische Hochschule-Zürich, 3.Institute of Science and Engineering, Kanazawa University)

9:15 AM - 9:30 AM

[SCG49-07] Lower crustal accretion processes revealed from the study of gabbroic cores in Holes GT1A and GT2A, the ICDP Oman Drilling Project

*Sayantani Chatterjee1, Eiichi TAKAZAWA1, Katsuyoshi Michibayashi2, Peter B Kelemen3, Damon A.H. Teagle4, Oman Drilling Project Phase I Science Party (1.Department of Geology, Faculty of Sciences, Niigata University, Japan, 2.Department of Earth and Environmental Sciences, Nagoya University, Japan, 3.Lamont Doherty Earth Observatory, Columbia University, USA, 4.Southampton Marine and Maritime Institute, University of Southampton, United Kingdom)

9:30 AM - 9:45 AM

[SCG49-08] Petrology of Oman listvenite : Implications for carbon cycle in the subduction zone

*Toma Takahashi1, Tomoaki Morishita2, Hiroki Sato3, Juan Miguel Guotana2, Tatsuhiko Kawamoto4, Peter B Kelemen5, Jude Ann Coggon6, Michelle Harris7, Juerg Michael Matter6, Katsuyoshi Michibayashi8, Eiichi TAKAZAWA9, Damon A H Teagle6, The Oman Drilling Project Phase 1 science Party (1.Faculty of Geosciences and Civil Engineering, Kanazawa university, 2.Division of Natural Sciences, Graduate School of Natural Science and Technology, Kanazawa university, 3.Faculty of Science, Kyoto university, 4.Department of Geoscience, Faculty of Science, Shizuoka university, 5.Lamont-Doherty Earth Observatory, Columbia university, 6.School of Ocean and Earth Science, National Oceanography Center Southampton, University of Southampton, 7.School of Geography, Earth and Environmental Sciences, Plymouth University, 8.Department of Earth Planetary Sciences, Graduate School of Environmental Studies, Nagoya university, 9.Institute of Science and Technology, Niigata university)

9:45 AM - 10:00 AM

[SCG49-09] PGE and Os isotope variation in the gabbros and peridotites from the Oman DP drilling cores in the Samail ophiolite, Oman

*Ryoko Senda1,2, Katsuhiko Suzuki2, Tomoaki Morishita3, Eiichi TAKAZAWA4, Katsuyoshi Michibayashi5, Peter B Kelemen6, Damon AH Teagle7, Jude Ann Coggon7, Marguerite Godard8, The Oman DP Science Party (1.Faculty of Social and Cultural Studies, Kyushu University, 2.Research and Development Center for Submarine Resources, JAMSTEC, 3.School of Natural System, Colleage of Science and Technology, Kanazawa University, 4.SDepartment of Geology, Faculty of Science, Niigata University, 5.Department of Earth and Planetary Sciences, Nagoya University, 6.Columbia University, 7.University of Southampton, 8.Géosciences Montpellier)

10:00 AM - 10:15 AM

[SCG49-10] Overview of drilling of crust-mantle boundary at CM1&2 sites of Wadi Tayin massif of Oman ophiolite: the ICDP Oman Drilling Project

*Eiichi TAKAZAWA1, Damon A H Teagle2, Katsuyoshi Michibayashi3, Yoshihiko Tamura4, Jude Ann Coggon2, Juerg Matter2, Peter B Kelemen5, Oman Drilling Project Phase 2 Science Party (1.Department of Geology, Faculty of Science, Niigata University, 2.University of Southampton, 3.Nagoya University, 4.JAMSTEC, 5.Columbia University)

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