[H-RE12] Seafloor mineral resources and their natural analogues on land

Thu. May 28, 2026 3:30 PM - 5:00 PM Exhibition Hall Special Setting (3) (Exhibition Hall 7&8, Makuhari Messe)

Chairperson:Jamieson William John(University of Ottawa), Martin Jonathan Andrew(University of Nevada, Las Vegas), Seo Jung Hun(School of Earth and Environmental Sciences, Seoul National University)

The main targets of this session are seafloor mineral resources such as seafloor hydrothermal deposits, ferromanganese nodules, ferromanganese crusts and rare-earth element-rich muds, as well as their natural analogues on land such as volcanogenic massive sulfide (VMS) deposits, and stratiform and stratabound manganese and ferromanganese (umber) deposits. Any researches focusing on the geology, geochemistry, geophysics, microbiology, metallogenesis and enrichment mechanisms of targeted elements, laboratory experiments and method development, modeling of ore forming processes, environmental impact assessments, mine drainage treatment and environmental remediation, introductions of recent field investigation and research cruises are highly welcome. Since this session is restricted to JpGU-AGU 2026 (possibly continued to Goldschmidt 2028 in Tokyo), we expect this session to facilitate vigorous multidisciplinary discussion and academic exchange beyond the research fields, which are impossible at only one academic society.

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3:30 PM - 3:45 PM

[HRE12-06] Unravelling the gold precipitation in the seafloor hydrothermal system: Insights from fluid inclusion microanalysis

*Yechan Jeon¹, Jung Hun Seo¹, Tatsuo Nozaki², Marcel Guillong³, Sung-Hyun Park⁴ (1. School of Earth and Environmental Sciences, Seoul National University, Republic of Korea, 2. Faculty of Science and Engineering, Waseda University, Tokyo, Japan, 3. Department of Earth Sciences, ETH Zurich, Switzerland, 4. Korea Polar Research Institute, Incheon, Republic of Korea)

3:45 PM - 4:00 PM

[HRE12-07] Gold enrichment mechanism at the Higashi-Aogashima Knoll Caldera hydrothermal field from the aspect of Pb isotope

*Kentaro Ishida¹, Mizuki Ishida^2,3, Junji Torimoto¹, Qing Chang⁴, Shiki Machida⁵, Yutaro Takaya^6,1, Jun-ichiro Ishibashi⁷, Akiko Makabe⁴, Mikiya Yamashita⁸, Kazutaka Yasukawa⁶, Yasuhiro Kato^6,5, Mindaleva Diana¹, Yuji Gonoi¹, Tatsuo Nozaki^1,6 (1. Waseda University, 2. Natural History Museum, 3. Kwansai Gakuin Univ., 4. JAMSTEC, 5. ChibaTech, 6. Univ. of Tokyo, 7. Kobe Univ., 8. AIST)

4:00 PM - 4:15 PM

[HRE12-08] Gold enrichment and deportment at the Higashi-Aogashima Knoll Caldera, Japan

*Andrew Jonathan Martin¹, Claudia Y Martinez¹, Tatsuo Nozaki², John William Jamieson³ (1. University of Nevada, Las Vegas, 2. Waseda University, 3. University of Ottawa)

4:15 PM - 4:30 PM

[HRE12-09] Small-Scale Geochemical Variability in a Sediment-Hosted Hydrothermal System in the Southeastern Flank of the Mienhua Submarine Volcano, South Okinawa Trough

*Feng-Hsin Hsu¹, Chih-Chieh Su^1,2,3, Shein-Fu Wu¹, Yu-Shih Lin⁴, Hsiao-Fen Lee⁵, Pei-Chuan Chuang⁶, Chieh-Wei Hsu⁷, Ta-Wei Hsu¹, Song-Chuen Chen⁸ (1. Institute of Oceanography, National Taiwan University, 2. Ocean Center, National Taiwan University, Taipei, Taiwan, 3. Science and Technology Research Institute for DE-carbonization, National Taiwan University, Taipei, Taiwan, 4. Department of Oceanography, National Sun Yat-Sen University, Kaohsiung, Taiwan, 5. National Center for Research on Earthquake Engineering, National Applied Research Laboratories, Taipei, Taiwan, 6. Department of Earth Sciences, National Central University, Taoyuan, Taiwan, 7. Cross College Elite Tech Program, National Kaohsiung University of Science and Technology, Kaohsiung 811213, Taiwan, 8. Geological Survey and Mining Management Agency, Ministry of Economic Affairs, New Taipei City, Taiwan)

4:30 PM - 4:45 PM

[HRE12-10] Development of an Automated Seafloor Hydrothermal Signal Detection System from Shipborne MBES Data Using Deep Learning

*Kosei Yamashiro¹, Kazuhide Mimura², Kentaro Nakamura^1,3, Kazutaka Yasukawa¹, Yasuhiro Kato^1,3 (1. School of Engineering, The University of Tokyo, 2. National Institute of Advanced Industrial Science and Technology, 3. Ocean Resources Research Institute for Next Generation, Chiba Institute of Technology)

4:45 PM - 5:00 PM

[HRE12-11] Basic Study of Flowrate Estimation for Hydrothermal Jets Under Ambient Flows by Means of Ultrasonic Velocity Profiling and Image Analysis

*Satomi Ueno¹, Tomonori Ihara² (1. Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 2. Dep. of Marine Electronics and Mechanical Engineering, Tokyo University of Marine Science and Technology)

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