[M-ZZ49] Frontiers of Geochemistry: Pioneering Research in a Changing World

Sun. May 24, 2026 3:30 PM - 5:00 PM 302 (International Conference Hall, Makuhari Messe)

Chairperson:Yokoyama Yusuke(Atmosphere and Ocean Research Institute, University of Tokyo), Jurikova Hana(University of St Andrews)

In modern Earth and Planetary Sciences, innovative chemical analyses and perspectives serve as key drivers of scientific breakthroughs. This session aims to bring together researchers working at the forefront of geochemistry, including those pioneering advanced analytical techniques, those applying them across diverse fields, and those who use them to bridge disciplinary boundaries, to explore new directions in the geosciences.
The 2026 session, titled Frontiers of Geochemistry: Pioneering Research in a Changing World, will provide an international forum for scientists to address shared challenges and opportunities in a time of environmental and societal transformations. Discussions will highlight the current state and future perspectives of cosmo- and geochemistry, including circulation, partitioning, and transfer of elements in Earth and planetary systems, isotope fractionation and its effects on isotope ratios, and the identification of chemical species and processes.
As part of the JpGU-AGU joint meeting, this session encourages participants to look beyond disciplinary boundaries, consider element cycles in a broader context, and engage in dialogue on the chemical innovations essential to advancing geosciences. We seek to showcase innovative approaches, foster collaboration, and envision the future of geochemistry.

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3:30 PM - 4:00 PM

[MZZ49-06] Re-evaluating Bacterial Necromass Contributions to Aquatic Organic Matter with a Racemization-Corrected D-Amino Acid Biomarker Framework

★Invited Papers

*Yasuhiko T. Yamaguchi¹ (1. Lake Biwa Environmental Research Institute)

4:00 PM - 4:15 PM

[MZZ49-07] Changes in autochthonous and allochthonous carbon burial in Lake Biwa revealed by radiocarbon mixing models

*Soyaib Muhammad Shish¹, Wataru Nakamura^2,1, Yasuhiko T. Yamaguchi², Ren Tsuneoka³, Yosuke Miyairi¹, Sho Ogasawara², Yasuro Fuse⁴, Yusuke Yokoyama¹ (1. The University of Tokyo, Atmosphere and Ocean Research Institute, 2. Lake Biwa Environmental Research Institute, 3. Research Center For Advance Science and Technology, The University of Tokyo, 4. Department of Molecular Chemistry, Kyoto Institute of Technology)

4:15 PM - 4:30 PM

[MZZ49-08] First Determination of Isotopocule Ratios of Amino Acids in the Ocean Water Column by Electrospray Ionization Orbitrap Mass Spectrometry

*Yuchen Sun^1,2, Brett Davidheiser-Kroll^3,4, Taylor A.B. Broek⁵, Matthew D. McCarthy¹ (1. University of California, Santa Cruz, 2. Institute of Science Tokyo, 3. Thermo Fisher Scientific, 4. University of Colorado Boulder, 5. Stanford University)

4:30 PM - 4:45 PM

[MZZ49-09] Tracing DMS chemistry based on MSA triple oxygen isotopes in Syowa Station, Antarctica

*Shohei Hattori¹, Yihang Hong¹, Sakiko Ishino², Ursula Jongebloed³, Becky Alexander⁴, Keiichiro Hara⁵, Masahiko Hayashi⁵ (1. Nanjing University, 2. Kanazawa University, 3. Massachusetts Institute of Technology, 4. University of Washington, 5. Fukuoka University)

4:45 PM - 5:00 PM

[MZZ49-10] Chemical maps instead of spot analysis: advancing LA-ICP-MS chemical analysis through spatial data

*Thorsten Andreas Markmann^1,2, Pierre Lanari³, Thomas Pettke¹, Euan J. F. Mutch² (1. Institute of Geological Sciences, University of Bern, Baltzerstrasse 1+3, CH-3012 Bern, Switzerland, 2. Earth Observatory of Singapore, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore, Singapore, 3. Institute of Earth Sciences, University of Lausanne, Géopolis, Quartier Mouline, 1015 Lausanne, Switzerland)

Session information