[R3] R3: High-pressure science and deep Earth’s material | 2026 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

Session Details

Oral presentationR3: High-pressure science and deep Earth’s material

R3: High-pressure science and deep Earth’s material

Fri. Sep 25, 2026 2:15 PM - 6:00 PM JST
Fri. Sep 25, 2026 5:15 AM - 9:00 AM UTC

Room A (279)

Chairperson:Takayuki Ishii(Okayama University), Ko Fukuyama(Kyushu University), Goru Takaichi(Hiroshima University), Takeshi Sakai(Ehime University)

2:15 PM - 2:45 PM JST(5:15 AM - 5:45 AM UTC)Invited Lecture

[R3-09]A young, superionic Earth's inner core inferred from high-pressure and high-temperature experiments

*Kenji Ohta¹, Nagaya Yoshihiro¹, Okazaki Yusuke¹, Dekura Haruhiko² (1. Science Tokyo, 2. Ehime Univ. GRC)

2:45 PM - 3:00 PM JST(5:45 AM - 6:00 AM UTC)Student Presentation Award Entry

[R3-10]The Elasticity of a Novel Dense Hydrous Calcium Silicate, CaSiO₄H₂ post-suolunite

*Moe Kajiwara¹, Taku Tsuchiya¹, Satoshi Kaneshima^2,1 (1. GRC, Ehime Univ., 2. Kyushu Univ. Sci.)

3:00 PM - 3:15 PM JST(6:00 AM - 6:15 AM UTC)

[R3-11]Water content and transport of fluid in the mantle transition zone

*Eiji OHTANI¹, Takayuki ISHII², Sumito SHINDO¹, Yongsheng HUANG³ (1. Tohoku University, 2. Institute for Planetary Materials, Okayama University, 3. Guangzhou Institute of Geochemistry, CAS)

3:15 PM - 3:30 PM JST(6:15 AM - 6:30 AM UTC)Student Presentation Award Entry

[R3-12]Discovery of a new high-pressure olivine polymorph under high-pressure and high-temperature conditions

*Hikato Amano¹, Takaaki Kawazoe¹, Toru Inoue¹, Goru Takaichi¹, Naotaka Tomioka^2,1, Takayuki Ishii³, Noriyoshi Tsujino⁴ (1. Hiroshima Univ. Advanced Science and Engineering, 2. JAMSTEC. Kochi, 3. Okayama Uiv, 4. JASRI)

3:30 PM - 3:45 PM JST(6:30 AM - 6:45 AM UTC)

[R3-13]Phase relations of hydrous pyrolite up to top lower mantle conditions: Effects of minor components on stability of hydrous minerals

*Takayuki ISHII¹, Zhu Jintao² (1. Okayama University, 2. Pekin University)

3:45 PM - 4:00 PM JST(6:45 AM - 7:00 AM UTC)

[R3-14]Reinvestigation of Phase Relations of Hydrous Aluminosilicates from the Mantle Transition Zone to Uppermost Lower Mantle

*Goru TAKAICHI¹, Makoto Bisaiji¹, Toru Inoue¹, Yu Nishihara², Sho Kakizawa³, Noriyoshi Tsujino³, Yuji Higo³ (1. Hiroshima Univ. Adv. Sci. Eng., 2. Ehime Univ. GRC, 3. JASRI)

4:00 PM - 4:15 PM JST(7:00 AM - 7:15 AM UTC)

[xnTQ7.jf-7add]休憩

4:15 PM - 4:30 PM JST(7:15 AM - 7:30 AM UTC)Student Presentation Award Entry

[R3-15]Discovery of the Ultra-High-Temperature Stability of High-Pressure Hydrous Aluminosilicate Phases with Solved MgO Components

*Makoto Bisaiji¹, Toru Inoue¹, Goru Takaichi¹, Takaaki Kawazoe¹, Toru Shinme², Tetsuo Irihune² (1. Hiroshima Univ. , 2. Ehime Univ. GRC)

4:30 PM - 4:45 PM JST(7:30 AM - 7:45 AM UTC)Student Presentation Award Entry

[R3-16]Stability of SiC in the SiO₂-SiC Binary System Under High Temperature and High Pressure Conditions

*Takeru Igarashi¹, Takayuki Ishii², Ryosuke Sinmyo¹, Kenta Kobayashi¹ (1. Meiji university, 2. Okayama university)

4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)Student Presentation Award Entry

[R3-17]Effects of Point Defects on the Seismic Velocities of Al-bearing Bridgmanite Using Molecular Dynamics Based on Machine Learning Potential

*Seitaro Yazawa¹, Kenji Kawai¹, Ryo Kobayashi², Satoshi Ohmura³ (1. UTokyo Sci., 2. Nitech Eng., 3. Ehime Univ. EU-PIAS)

5:00 PM - 5:15 PM JST(8:00 AM - 8:15 AM UTC)

[R3-18]High-pressure and high-temperature synthesis of iron oxynitride and implication for primordial nitrogen in the deep Earth

*Ko FUKUYAMA¹, Ryosuke Sinmyo², Shuhou Maitani², Sayako Inoué³, Hiroyuki Kagi⁴, Toru Shinmyo³, Tetsuo Irifune³ (1. Kyushu Univ. Sci., 2. Meiji Univ. Sci. Tech., 3. Ehime Univ. GRC, 4. Univ. Tokyo Sci.)

5:15 PM - 5:30 PM JST(8:15 AM - 8:30 AM UTC)Student Presentation Award Entry

[R3-19]Diamond anvil cell experiments toward determining the maximum nitrogen solubility in magnesiowüstite

*Mana Shiogama¹, Ryosuke Sinmyo¹, Ko Fukuyama², Ken Niwa³, Ai Ichinohe³, Shuhou Maitani¹, Naohisa Hirao⁴, Hirokazu Kadobayashi⁴ (1. Meiji University, 2. Kyusyu University, 3. Nagoya University, 4. JASRI)

5:30 PM - 5:45 PM JST(8:30 AM - 8:45 AM UTC)Student Presentation Award Entry

[R3-20]First-principles calculations on Fe-X-H ternary systems (X = Si, Ni): Changes in the hydrogen-induced volume expansion coefficient in iron alloys and their origins

*Masahiro Takano¹, Hiroyuki Kagi¹, Katsutoshi Aoki¹, Taku Tsuchiya² (1. The Univertsity of Tokyo, 2. Ehime University)

5:45 PM - 6:00 PM JST(8:45 AM - 9:00 AM UTC)

[R3-21]High-Speed Pressure Control Using a Piezoelectric-Driven DAC and Time-Resolved X-Ray Diffraction

*Hitoshi Yusa¹, Saori Kawaguchi³, Hirokazu Kadobayashi², Naohisa Hirao² (1. NIMS, 2. JASRI, 3. JASRI(Kyoto University))

Back to Category List