Hydrogen and oxygen isotopes of fluid inclusions in ophicarbonates show a linear variation from hydrothermal fluids beneath mid-ocean ridges toward meteoric water with lighter isotopes

Tatsuhiko Kawamoto

Presentation information

[E] Oral

S (Solid Earth Sciences ) » S-GC Geochemistry

[S-GC45] Volatiles in the Earth - from Surface to Deep Mantle

Mon. May 25, 2026 10:45 AM - 12:15 PM Convention Hall (CH-B) (International Conference Hall, Makuhari Messe)

Chairperson:Hanyu Takeshi(Japan Agency for Marine-Earth Science and Technology, Research Institute for Marine Geodynamics), Caracausi Antonio(National Institute of Geophysics and Volcanology)

11:00 AM - 11:15 AM

[SGC45-08] Hydrogen and oxygen isotopes of fluid inclusions in ophicarbonates show a linear variation from hydrothermal fluids beneath mid-ocean ridges toward meteoric water with lighter isotopes

*Tatsuhiko Kawamoto¹, Ryu Uemura², Keishi Matsuda¹, Reiya Kitajima¹, Toma Tanaka¹, Hiroyuki Kaneko¹, Yosuke Osawa¹, kazuhiro Inukai¹, Itsuki Kageta¹, Miki Tasaka¹, Hajime Taniuchi⁶, Osamu Abe², Kenneth Koga³, Estelle Koga Rose³, Francesca Meneghini⁵, Christian Nicollet⁴ (1. Department of Geoscience, Faculty of Science, Shizuoka University, 2. Graduate school of enviromental science, Nagoya University , 3. School of Earth Science, University of Orleans, 4. Laboratory of Magmas and Volcanoes, University of Clermond, 5. Department of Geoscience, University of Pisa, 6. AIST)

Keywords:ophicarbonate, serpentinite, fluid inclusion, stable isotopes, Sambagawa metamorphic belt, Mikabu green stone belt