JpGU-AGU Joint Meeting 2026

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[E] Oral

S (Solid Earth Sciences ) » S-GC Geochemistry

[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)

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)

Keywords:Lead isotope paradox, Lower mantle geochemistry, High-pressure sulfides, First principles calculations, Mantle differentiation