[S-CG54] Hard-Rock Drilling: Oman to Oceanic Lithosphere to Island Arc Formation and Beyond

Mon. May 21, 2018 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

convener:Eiichi TAKAZAWA(Department of Geology, Faculty of Science, Niigata University), Katsuyoshi Michibayashi(Department of Earth and Planetary Sciences, Nagoya University), Peter B Kelemen (共同), Damon A H Teagle (Ocean & Earth Science, National Oceanography Centre Southampton, University of Southampton, SO14-3ZH, Southampton, UK)

The on-going Oman Drilling Project (OmDP) has drilled numerous hard-rock cores of ancient oceanic lithosphere and the underlying subduction zone of the Samail ophiolite in Oman, with support from ICDP, IODP, the Sloan Foundation's Deep Carbon Observatory, and Japanese, US, and European research agencies. Moreover, a number of IODP expeditions have focused on hard-rock drilling over the last 5 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.

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[SCG54-P01] Lower crustal section of the Oman Ophiolite drilled in Hole GT1A, ICDP Oman Drilling Project

*Susumu Umino¹, Peter B Kelemen², Eiichi TAKAZAWA⁴, Katsuyoshi Michibayashi⁵, Damon A H Teagle³, Phase1 Science Party The Oman Drilling Project Phase1 Science Party⁶ (1.Department of Earth Sciences, Kanazawa University, 2.Lamont-Doherty Earth Observatory, 3.Southampton University, 4.Niigata University, 5.Shizuoka University, 6.D/V CHIKYU)

[SCG54-P02] The record of hydrothermal alteration in the lower oceanic crust sampled by Oman Drilling Project Holes GT1A and GT2A

Michelle Harris¹, *Damon A H Teagle², Barbara Zihlmann², Dominik Mock³, Tetsu Akitou⁷, Kentaro Kondo⁴, Jeremy Deans⁵, Laura Crispini⁶, Eichii Takazawa⁷, Peter B Kelemen⁸, Jude Coggon², Phase 1 Science Party Oman Drilling Project (1.School of Geography, Earth and Environmental Sciences, Plymouth University, PL4 8AA, Plymouth, UK, 2.Ocean & Earth Science, National Oceanography Centre Southampton, University of Southampton, SO14-3ZH, Southampton, UK, 3.Leibniz University of Hannover, 4.Akita University, 5.Southern Mississippi University, 6.University of Genoa, 7.Niigata University, 8.Columbia University)

[SCG54-P03] Automated Analysis of Borehole Core Imagery from Oman Drilling Project Hole GT2A

Jin Wei Lim¹, Peter Hopkinson², Michelle Harris⁴, Blair Thornton¹, Adam Prugel-Bennett³, *Damon A H Teagle⁵, Phase 1 Science Party Oman Drilling Project (1.Engineering and the Environment, University of Southampton, SO16 7QF, Southampton, UK, 2.Mathematical Sciences, University of Southampton, Southampton, SO17 1BJ, Southampton, UK, 3.Electronics and Computer Science, University of Southampton, SO17 1BJ, Southampton, UK, 4.School of Geography, Earth and Environmental Sciences, Plymouth University, PL4 8AA, Plymouth, UK, 5.Ocean & Earth Science, National Oceanography Centre Southampton, University of Southampton, SO14-3ZH, Southampton, UK)

[SCG54-P04] Overview of Hole GT2A, ICDP Oman Drilling Project: Drilling middle gabbro in Wadi Tayin massif, Oman ophiolite

*Eiichi TAKAZAWA^1,6, Juergen Koepke⁷, Peter B Kelemen², Damon A H Teagle³, Jude Ann Coggon³, Michelle Harris⁴, Katsuyoshi Michibayashi⁵, The Oman Drilling Project Phase I Science Party (1.Department of Geology, Faculty of Science, Niigata University, 2.Columbia University, 3.University of Southampton, 4.Plymouth University, 5.Shizuoka University, 6.JAMSTEC, 7.Leibniz Universitaet Hannover)

[SCG54-P05] Lithological and petrophysical variation of the lower crustal section from the ICDP Oman drilling project Holes GT1A and GT2A

*Yuki Kusano¹, Susumu Umino², Takashi Hoshide³, Eiichi TAKAZAWA⁴, Damon A H Teagle⁵, Peter B Kelemen⁶, Judith Coggon⁵, The Oman Drilling Project Phase I Science Party⁷ (1.Geological Survey of Japan/AIST, 2.Kanazawa University, 3.Akita University, 4.Niigata University, 5.University of Southampton, 6.Lamont-Doherty Earth Observatory, 7.D/V CHIKYU)

[SCG54-P06] Overview of Hole GT3A: The sheeted dike/gabbro transition

*Natsue Abe¹, Michelle Harris², Katsuyoshi Michibayashi³, Juan Carlos de Obeso⁴, Peter B Kelemen⁵, Eiichi TAKAZAWA⁶, Damon A H Teagle⁷, Jude Ann Coggon⁷, Juerg Michael Matter⁴, Phase I Science Party The Oman Drilling Project⁸ (1.R&D Center for Ocean Drilling Science Japan Agency for Marine-Earth Science and Technology, 2.Plymouth University, 3.Shizuoka Univesity, 4.Lamont -Doherty Earth Observatory, 5.Columbia University, 6.Niigata University, 7.University of Southampton, Ocean & Earth Science, National Oceanography Centre Southampton, 8.University of Southampton, Oman Drilling Project Office)

[SCG54-P07] Listvenite-Metamorphic sole transition in the Basal thrust of the Oman Ophiolite: Geochemical, mineralogical and reaction path model preliminary results from Oman Drilling Project Hole BT1B.

Juan Carlos de Obeso¹, Marguerite Godard³, *Peter B Kelemen¹, Craig E Manning², Emma Bennett⁴, Elliot Carter⁵, Fatma Kourim⁶, Romain Lafay⁷, Julie Noel³, Katsuyoshi Michibayashi⁹, Michelle Harris⁸, Oman Drilling Project Phase 1 Science Party (1.Lamont Doherty Earth Observatory, Columbia University, 2.Department of Earth and Space Sciences University of California, Los Angeles, 3.Géosciences Montpellier Université de Montpellier, 4. School of Earth and Ocean Sciences, Cardiff University, 5.School of Earth and Environmental Sciences, The University of Manchester , 6.Earth Science Institute, Academia Sinica, 7.Institut des Sciences de la Terre Université de Lausanne, 8.School of Geography, Earth and Environmental Sciences, Plymouth, 9.Department of Environment and Energy Systems, Shizuoka University)

[SCG54-P08] Overview of Hole CM1 in the Oman Drilling Project Phase 2: Crust-Mantle boundary

*Yoshihiko Tamura¹, Eiichi Takazawa², Katsuyoshi Michibayashi³, Georges Ceuleneer⁴, Damon A H Teagle⁵, Juergen Koepke⁶, Fatna Kourime⁷, Tomoki Sato¹, Jude Coggon⁵, Juerg Matter⁵, Peter B Kelemen⁸, Scientists Phase 2 OmanDP ⁹ (1.R & D Center for Ocean Drilling Science, Japan Agency for Maine-Earth Science and Technology, 2.Niigata University, 3.Shizuoka University, 4.CNRS (French National Institute for Scientific Research), 5.University of Southampton, 6.Leibniz University Hannover, 7.Academia Sinica, 8.Columbia University, 9.OmanDP)

[SCG54-P09] Overview of Hole CM2 in the Oman Drilling Project Phase 2: the Moho transition zone to the uppermost mantle

*Katsuyoshi Michibayashi^1,7, Eiichi TAKAZAWA², Peter B Kelemen³, Damon A H Teagle⁴, Yoshihiko Tamura⁵, OmanDP Phase 2 Science Party⁶ (1.Shizuoka University, 2.Niigata University, 3.Columbia Unversity, 4.Southampton University, 5.JAMSTEC, 6.Oman, 7.Nagoya University)

[SCG54-P10] Petrology of V2 stage dykes In the northern Oman Ophiolite

*Takahiro Fudai¹, Susumu Umino², Yuki Kusano³, Atsushi Yamaji⁴ (1.Kanazawa University, 2.Department of Earth Sciences, Kanazawa University, 3.Geological Survey of Japan, 4.Division of Earth and Planetary Sciences, Graduate School of Science, Kyoto University)

[SCG54-P11] A new discovery of chromite-hosted inclusions from chromitites of the Samail ophiolite of Oman

*Yuan YAO¹, Eiichi TAKAZAWA^2,3 (1.Graduate School of Science and Technology, Niigata University, 2.Department of Geology, Faculty of Science, Niigata University, 3.ODS, JAMSTEC)

[SCG54-P12] Geochemistry of Wadi Tayin mantle section in the southern Oman mantle section with special reference to suprasubduction zone magmatism

*Keisuke ISHII¹, Eiichi TAKAZAWA^2,3, Akihiro KURIYAMA², Yoshihiko Tamura³ (1.Graduate School of Science and Technology, Niigata University, 2.Department of Geology, Faculty of Science, Niigata University, 3.R&D Center for ODS, JAMSTEC)

[SCG54-P13] Major and trace element compositions of peridotites from the Maqsad diapir area: implication for the melting and melt-mantle reaction at mid-ocean ridge

*Kaho TAKAHASHI¹, Eiichi TAKAZAWA^2,3, Ryoko Senda⁴, Katsuyoshi Michibayashi⁵, Keisuke ISHII¹, Yoshihiko Tamura³ (1.Graduate School of Science and Technology, Niigata University, 2.Geology Program, Faculty of Science, Niigata University, 3.Japan Agency for Marine-Earth Science and Technology, 4.Kyusyu University, 5.Shizuoka University)

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