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

[E] Oral
| S (Solid Earth Sciences )
| S-CG Complex & General

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

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)

Tue. May 27, 2025 3:30 PM - 5:00 PM Convention Hall (CH-A) (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG55] Ocean Floor Geoscience

4:30 PM - 4:45 PM

[SCG55-11] Interaction between seafloor spreading and arc formation

*Osamu Ishizuka¹, Taichi Sato¹, Gen Shimoda¹, Yumiko Harigane¹, Susumu Umino², Trinh Nguyen Thi My², Izumi Sakamoto³, Nozomi Nakamura⁸, Satoshi Watanabe³, Kouki Mori⁴, Yuka Yokoyama³, Kenichiro Tani⁵, Rex N. Taylor⁶, Yasuhiko Ohara⁷, Chris Conway¹ (1.Geological Survey of Japan, AIST, 2.Kanazawa University, 3.Tokai University, 4.Chiba University, 5.National Museum of Nature and Science, 6.University of Southampton, 7.HODJ, 8.Kokusai Kogyo Co., Ltd.)

Wed. May 28, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[J] Poster
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG55] Ocean Floor Geoscience

5:15 PM - 7:15 PM

[SCG55-P08] Exploration of serpentine-hosted alkaline vent in the southern Mariana forearc region with a focus on carbonates

*Kosuke Adachi¹, Tomoyo Okumura², Yumiko Harigane³, Yasuhiko Ohara⁴ (1.Kochi University, 2.Marine Core Research Institute, Kochi University, 3.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 4.Hydrographic and Oceanographic Department of Japan)

Mon. May 26, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[E] Poster
| B (Biogeosciences )
| B-BG Biogeosciences & Geosphere-Biosphere Interactions

[B-BG01] Earth and Planetary Science Frontiers for Life and Global Environment

5:15 PM - 7:15 PM

[BBG01-P03] Fluid sampling in the deepest serpentinite-hosted vent site, Shinkai Seep Field, Southern Mariana Arc: Revisiting after 8 years

*Tomoyo Okumura¹, Junichi Miyazaki², Shinsuke Kawagucci², Eiji Tasumi², Ken Takai², Yumiko Harigane³, Molly Anderson⁴, Emily Chin⁵, Nicholas Dygert⁶, Veronique Le Roux⁷, Matthew Leybourne⁸, Yasuhiko Ohara⁹, Ignacio Pujana¹⁰, Robert J. Stern¹⁰, TN438 on board scientist and students (1.Marine Core Research Institute, Kochi University, 2.JAMSTEC, 3.AIST, 4.Woods Hole Oceanographic Institution, 5.Scripps Institution of Oceanography, 6.University of Tennessee, 7.Université de Lorraine, 8.Queen’s University, 9.Hydrographic and Oceanographic Department of Japan, 10.University of Texas at Dallas)

Yasuhiko Ohara

Speaker, Author, Co-Author