Human Geosciences (H)
Session Sub-category Resource and Engineering Geology(RE)
Session ID H-RE12
Title Seafloor mineral resources and their natural analogues on land
Short Title Seabed resources and analogues on land
Main Convener Name Tatsuo Nozaki
Affiliation Faculty of Science and Engineering, Waseda University
Co-Convener 1 Name John William Jamieson
Affiliation University of Ottawa
Co-Convener 2 Name Amy Gartman
Affiliation U.S. Geological Survey
Co-Convener 3 Name Andrew Jonathan Martin
Affiliation University of Nevada, Las Vegas
Co-Convener 4 Name Jung Hun Seo
Affiliation School of Earth and Environmental Sciences, Seoul National University
Co-Convener 5 Name Kira Mizell
Affiliation U.S. Geological Survey
Session Language 
E
Scope 
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.
Presentation Format Oral and Poster presentation
Invited Authors Teruhiko Kashiwabara (SRRC, MRU, JAMSTEC)
Time Presentation No Title Presenter
Oral Presentation May 28 PM1
13:45 - 14:15 HRE12-01 Surface Chemistry of Marine Ferromanganese Oxides: Significance for the Modern and Ancient Oceans Teruhiko Kashiwabara
14:15 - 14:30 HRE12-02 Relationship Between Growth Rates and Critical-Metal Contents of Ferromanganese Crusts in the Western North Pacific Based on 10Be/9Be Dating Mikasa Ishigaki
14:30 - 14:45 HRE12-03 Ferromanganese Mineralization on Seamounts Surrounding Tuvalu in the South Pacific Ocean Kira Mizell
14:45 - 15:00 HRE12-04 Evaluation of ore-forming conditions of deep-sea ferromanganese oxide deposits based on cobalt mass balance in the ocean Yoki Ito
15:00 - 15:15 HRE12-05 Exploring controls on REE-rich mud formation based on an Nd-P ocean mass balance modeling Ryosuke Matsunami
Oral Presentation May 28 PM2
15:30 - 15:45 HRE12-06 Unravelling the gold precipitation in the seafloor hydrothermal system: Insights from fluid inclusion microanalysis Yechan Jeon
15:45 - 16:00 HRE12-07 Gold enrichment mechanism at the Higashi-Aogashima Knoll Caldera hydrothermal field from the aspect of Pb isotope Kentaro Ishida
16:00 - 16:15 HRE12-08 Gold enrichment and deportment at the Higashi-Aogashima Knoll Caldera, Japan Andrew Jonathan Martin
16:15 - 16:30 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 Hsu
16:30 - 16:45 HRE12-10 Development of an Automated Seafloor Hydrothermal Signal Detection System from Shipborne MBES Data Using Deep Learning Kosei Yamashiro
16:45 - 17:00 HRE12-11 Basic Study of Flowrate Estimation for Hydrothermal Jets Under Ambient Flows by Means of Ultrasonic Velocity Profiling and Image Analysis Satomi Ueno
Presentation No Title Presenter
Poster Presentation May 28 PM3
HRE12-P01 Subseafloor hydrothermal system at Hakurei Site, Izena Hole, middle Okinawa Trough based on the chlorite chemistry Yuji Gonoi
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 Hsu
HRE12-P03 Preliminary result of fluid inclusion study of Onnare hydrothermal vent field from the Central Indian Ridge Minjin Kim
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 MAEGAWA
HRE12-P05 In-situ S isotope composition of pyrite from the Shimokawa and Makimine volcanogenic massive sulfide deposits, Japan Tatsuo Nozaki
HRE12-P06 Geochemical Heterogeneity and Micro-structural Evolution of Ferromanganese Crusts from the Philippine Sea: Insights from High-Resolution Elemental Mapping Chun-Jung Chen
HRE12-P07 Geochemical characteristics of red shales and mudstones in the New England Orogen, Eastern Australia Yamato Sonoda
HRE12-P08 Regional distribution of Miocene impact ejecta layers around Minamitorishima Island revealed by the Os isotope Mindaleva Diana