[S-GC46] Solid Earth Geochemistry, Cosmochemistry

Thu. May 28, 2026 1:45 PM - 3:15 PM 106 (International Conference Hall, Makuhari Messe)

Chairperson:Shimoda Gen(Geological Survey of Japan, AIST), Suzuki Katsuhiko(Submarine Resources Research Center, Japan Agency for Marine-Earth Science and Technology), Yamashita Katsuyuki(Faculty of Environmental, Life, Natural Science and Technology, Okayama University), Ishikawa Akira(Department of Earth and Planetary Sciences, Tokyo Institute of Technology)

"Solid Earth Geochemistry, Cosmochemistry" session aims at evaluating processes during the 4.6 billion years of the solar system and the Earth. Any approaches to this issue is welcomed, including, geochemistry, geophysics, geology, mineralogy and petrology.

+Add all to schedule

1:45 PM - 2:00 PM

[SGC46-01] Iron-silicate partitioning of plutinum group elements under high pressure

*Taku Tsuchiya¹, Katsuhiko Suzuki² (1. Geodynamics Research Center, Ehime University, 2. JAMSTEC)

2:00 PM - 2:15 PM

[SGC46-02] Pressure-stabilised Pb–S phases as deep-mantle hosts for unradiogenic lead: solving the lead isotope paradox?

*Simon A T Redfern¹, Siyu Liu¹, Shidong Yu¹, Meng Guo² (1. Nanyang Technological University, 2. Hong Kong University)

2:15 PM - 2:30 PM

[SGC46-03] The numerical approach to reveal the structure of the large-scale deep mantle, focusing on subduction slabs by major element and isotopic compositions of OIBs

*Fumika Miyajima¹, Naoto Hirano¹ (1. Tohoku University)

2:30 PM - 2:45 PM

[SGC46-04] Constraints on slab-derived components beneath the Northeast Japan and Izu arcs from Molybdenum isotopic compositions

*Tatsuya Tamura^1,2, Tetsuya Yokoyama¹, James B Gill³, Takeshi Kuritani⁴, Hikaru Iwamori⁵, Kenta Ueki⁶, Takashi Kudo⁷ (1. Institute of Science Tokyo, 2. Tono Geoscience Center Japan Atomic Energy Agency , 3. University of California, Santa Cruz, 4. Hokkaido University, 5. The University of Tokyo, 6. Japan Agency for Marine-Earth Science and Technology, 7. Research Institute of Geology and Geoinformation, Geological Survey of Japan, AIST)

2:45 PM - 3:00 PM

[SGC46-05] Estimating mantle heat-producing element abundances through global geoneutrino detections

*Zhihao Xu¹, Shuai Ouyang², William F. McDonough^3,4,5, Hiroko Watanabe¹, Mark Chen⁶, Yang Zhang², Laura S. Keen⁷ (1. Research Center for Neutrino Science, Tohoku University, 2. Shandong University, 3. Advanced Institute for Marine Ecosystem Change (WPI-AIMEC), Tohoku University & JAMSTEC, 4. University of Maryland, College Park, 5. Center for Geoneutrino Research, Institute of Oceanology, Chinese Academy of science, 6. Queen's University at Kingston, 7. The MathWorks, Inc.)

3:00 PM - 3:15 PM

[SGC46-06] When Expectation–Maximization Meets Self-Distillation: A Unified Framework for Robust Geochemical Anomaly Recognition

*Shuyan Yu^1,2, Hao Deng¹ (1. School of Geosciences and Info-Physics, Central South University, 2. Earthquake Research Institute, The University of Tokyo)

Session information