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

Thu. May 28, 2026 5:15 PM - 7:00 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

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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5:15 PM - 7:00 PM

[HRE12-P01] Subseafloor hydrothermal system at Hakurei Site, Izena Hole, middle Okinawa Trough based on the chlorite chemistry

*Yuji Gonoi¹, Isami Hattori¹, Sotaro Arai¹, Junji Torimoto¹, Tsubasa Otake², Toshiro Nagase³, Jun'ichiro Ishibashi⁴, Tatsuo Nozaki^1,5 (1. Waseda University, 2. Hokkaido University, 3. Tohoku University, 4. Kobe University, 5. University of Tokyo)

5:15 PM - 7:00 PM

[HRE12-P02] Multistage Hydrothermal Mineralization of Polymetallic Sulfides from the Mianhua Submarine Volcano, Southern Okinawa Trough - Implication for High Silver Concentrations in the Ores

*Ta-Wei Hsu¹, Chih-Chieh Su¹, Feng-Hsin Hsu¹, Shein-Fu Wu¹, Song-Chuen Chen², Chun-Jung Chen³ (1. National Taiwan University, 2. Geological Survey and Mining Management Agency, 3. National Museum of Natural Science)

5:15 PM - 7:00 PM

[HRE12-P03] Preliminary result of fluid inclusion study of Onnare hydrothermal vent field from the Central Indian Ridge

*Minjin Kim¹, Jung Hun Seo¹, Sun Ki Choi², Jonguk Kim² (1. SNU, 2. KIOST)

5:15 PM - 7:00 PM

[HRE12-P04] Geology of the Northern Shimanto belt in the Makimine area of the northern part of Miyazaki Prefecture and the genesis of volcanic massive sulfide deposits

*KOKI MAEGAWA¹, TETSUJI ONOUE² (1. Department of Earth and Planetary Sciences, Graduate School of Science, Kyushu University, 2. Department of Earth and Planetary Sciences, Faculty of Science, Kyushu University)

5:15 PM - 7:00 PM

[HRE12-P05] In-situ S isotope composition of pyrite from the Shimokawa and Makimine volcanogenic massive sulfide deposits, Japan

*Tatsuo Nozaki^1,2, Mika Ouchi¹, Soshi Tanigawa¹, Kentaro Ishida¹, Junji Torimoto¹, Yuji Gonoi¹, Takayuki Ushikubo^3,4, Kenji Shimizu³, Ken Nakayama⁴ (1. Waseda University, 2. Univ. of Tokyo, 3. JAMSTEC, 4. Kochi Univ.)

5:15 PM - 7:00 PM

[HRE12-P06] Geochemical Heterogeneity and Micro-structural Evolution of Ferromanganese Crusts from the Philippine Sea: Insights from High-Resolution Elemental Mapping

*Chun-Jung Chen¹ (1. National Museum of Natural Science)

5:15 PM - 7:00 PM

[HRE12-P07] Geochemical characteristics of red shales and mudstones in the New England Orogen, Eastern Australia

*Yamato Sonoda¹, Kazutaka Yasukawa¹, Koichiro Fujinaga^2,1, Keishiro Azami², Yoichi Usui³, Jonathan C Aitchison⁴, Kentaro Nakamura^1,2, Yasuhiro Kato^1,2 (1. School of Engineering, The University of Tokyo, 2. ORCeNG, Chiba Institute of Technology,, 3. Kanazawa University, 4. School of the Environment, University of Queensland)

5:15 PM - 7:00 PM

[HRE12-P08] Regional distribution of Miocene impact ejecta layers around Minamitorishima Island revealed by the Os isotope

*Mindaleva Diana¹, Tatsuo Nozaki^1,2, Kazuhide Mimura³, Moei Yano^3,2, Junichiro Ohta², Fiona Segolame Motswaiso⁴, Koichi Iijima⁴, Kazutaka Yasukawa², Kentaro Nakamura^2,3, Yasuhiro Kato^2,3 (1. Waseda Univ., 2. Univ. of Tokyo, 3. Chiba Institute of Technology, 4. JAMSTEC)

Session information

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

[HRE12-P01] Subseafloor hydrothermal system at Hakurei Site, Izena Hole, middle Okinawa Trough based on the chlorite chemistry

[HRE12-P02] Multistage Hydrothermal Mineralization of Polymetallic Sulfides from the Mianhua Submarine Volcano, Southern Okinawa Trough - Implication for High Silver Concentrations in the Ores

[HRE12-P03] Preliminary result of fluid inclusion study of Onnare hydrothermal vent field from the Central Indian Ridge

[HRE12-P04] Geology of the Northern Shimanto belt in the Makimine area of the northern part of Miyazaki Prefecture and the genesis of volcanic massive sulfide deposits

[HRE12-P05] In-situ S isotope composition of pyrite from the Shimokawa and Makimine volcanogenic massive sulfide deposits, Japan

[HRE12-P06] Geochemical Heterogeneity and Micro-structural Evolution of Ferromanganese Crusts from the Philippine Sea: Insights from High-Resolution Elemental Mapping

[HRE12-P07] Geochemical characteristics of red shales and mudstones in the New England Orogen, Eastern Australia

[HRE12-P08] Regional distribution of Miocene impact ejecta layers around Minamitorishima Island revealed by the Os isotope

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