Cerium isotopes unveil hydrogenetic Fe-Mn encrustation occurring throughout from the oxygen minimum zone to the deep pacific
profiles in seawater and crusts across the OMZ in the Northwest Pacific Ocean, which are closely linked with the ocean Mn cycle. We further quantify a close association of Ce with Mn oxides in Fe-Mn crusts and Ce isotope fractionation between crusts and ambient seawater, bridging marine Mn and Ce cycles. These results support a revised model in which Mn oxide precipitation could initiate within the OMZ and persist into the deep ocean.
Authors
- Naoya Kanna (ORCID: https://orcid.org/0000-0003-1874-3868)
- Yoshihiro Asahara (ORCID: https://orcid.org/0000-0001-7417-6592)
- Hirofumi Tazoe (ORCID: https://orcid.org/0000-0003-3711-1225)
- Inhee Kim
- Kotaro Higashi (ORCID: https://orcid.org/0000-0003-4434-430X)
- Masato Tanaka (ORCID: https://orcid.org/0000-0002-6454-7115)
- Hajime Obata
- Naomi Kawamura
- Wenshuai Li
- Akira Usui
- Teruhiko Kashiwabara
- Ryoichi Nakada
- Yoshio Takahashi
Institutions
- Hiroshima University (JP)
- Japan Agency for Marine-Earth Science and Technology (JP)
- Hirosaki University (JP)
- Tokyo Fuji University (JP)
- Hosei University (JP)
- China University of Geosciences (CN)
- Japan Synchrotron Radiation Research Institute (JP)
- Nagoya University (JP)
- The University of Tokyo (JP)
- Kōchi University (JP)
Publication Details
- Journal
- Science Advances
- Published
- 2026-05-01
- DOI
- https://doi.org/10.1126/sciadv.aee2813
- Primary Topic
- Geochemistry and Elemental Analysis
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Science Foundation
- National Natural Science Foundation of China
- Japan Society for the Promotion of Science