Thu. May 29, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[J] Poster
| S (Solid Earth Sciences )
| S-GL Geology

[S-GL23] Geologic structure and tectonic history of East Asia and Japanese Islands

5:15 PM - 7:15 PM

[SGL23-P07] Granitic rocks exposed at the seafloor around the Goto Islands, the westernmost Kyusyu, Japan

*Tomo Aoki¹, Osamu Ishizuka², Yumiko Harigane² (1.Japan Coast Guard, 2.AIST)

Tue. May 27, 2025 1:45 PM - 3:15 PM Convention Hall (CH-B) (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-VC Volcanology

[S-VC34] Volcanic and igneous activities, and these long-term forecasting

3:00 PM - 3:15 PM

[SVC34-06] Post-emplacement cooling of andesitic-dacitic lava flows and implications for ⁴⁰Ar/³⁹Ar dating at arc volcanoes

*Chris Conway¹, Andrew Calvert², Graham Leonard³, Seiko Yamasaki¹, Osamu Ishizuka¹, Yumiko Harigane¹ (1.Geological Survey of Japan, AIST, 2.U.S. Geological Survey, 3.GNS Science)

Wed. May 28, 2025 1:45 PM - 3:15 PM 104 (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-VC Volcanology

[S-VC36] Volcanoes in the sea

3:00 PM - 3:15 PM

[SVC36-06] Report on pumiceous debris from the Izu-Bonin arc back-arc rift zone discovered in the waters around Izu-Torishima, Izu-Torishima and the Nansei Islands after October 2023

*Kurumi Iwahashi¹, Osamu Ishizuka¹, Teruki Oikawa¹, Fumihiko Ikegami¹, Yu Maruya², Naoki Tomita³ (1.National Institute of Advanced Industrial Science and Technology , 2.Necono-Wakuwaku Nature School, 3.Yamashina Institute for Ornithology)

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-VC Volcanology

[S-VC36] Volcanoes in the sea

5:15 PM - 7:15 PM

[SVC36-P01] Submarine Geology of the Western Offshore Area of Suwanosejima Island: Preliminary Result of 2024 Survey

★Invited Papers

*Yoshiaki Suzuki¹, Osamu Ishizuka¹, Hiroaki Koge¹, Jun Arimoto¹, Atsuko Amano¹, Taiga Nakano² (1.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 2.Kyushu University)

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

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

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

5:15 PM - 7:15 PM

[SCG51-P04] Microstructural and petrological analyses of the gabbroic rocks along the Vulcan Transform in the Southern Ocean

*Yumiko Harigane¹, Kenichiro Tani², Osamu Ishizuka¹, Kyoko Okino³ (1.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 2.National Museum of Nature and Science, 3.Atmosphere and Ocean Research Institute, The University of Tokyo)

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 9:00 AM - 10:30 AM Convention Hall (CH-A) (International Conference Hall, Makuhari Messe)

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

[S-CG55] Ocean Floor Geoscience

9:00 AM - 9:15 AM

[SCG55-12] Understanding the age and crustal structure of the unknown pieces of the Proto-Philippine Sea Plate: Preliminary results of the KH-23-10 cruise

*Kenichiro Tani¹, Kyoko OKINO³, Chih-Chieh SU⁸, Osamu ISHIZUKA², Hayato UEDA⁶, Yumiko HARIGANE², KanHsi HSIUNG⁴, Takuya SAGAWA⁵, Nao KUSUHASHI⁷, Akito OGAWA¹, Natsumi HOOKABE⁴, Sze Ling HO⁸, Jih-Hsin CHANG⁸, Hsin LEE⁹, Shye-Donq CHIOU⁸, Ta-Wei HSU⁸, * KH-23-10 shipboard scientific party (1.National Museum of Nature and Science, 2.National Institute of Advanced Industrial Science and Technology, 3.Atmosphere and Ocean Research Institute, The University of Tokyo, 4.Japan Agency for Marine-Earth Science and Technology, 5.Kanazawa University, 6.Niigata University, 7.Ehime University, 8.Institute of Oceanography, National Taiwan University, 9.National Museum of Marine Biology and Aquarium, Taiwan)

10:15 AM - 10:30 AM

[SCG55-17] Distribution of submarine volcanoes in the Tokara Islands, Kagoshima Prefecture, Japan: Relation to stretching field due to rifting of the back-arc basin

*Keitatsu Kamochi¹, Seishiro Furuyama^1,2, Saki Ishino², Hiroaki Koge², Osamu Ishizuka² (1.Tokyo University of Marine Science and Technology, 2.Geological Survey of Japan, AIST)

Osamu Ishizuka

Speaker, Author, Co-Author

★Invited Papers