Chamber‐by‐Chamber Measurements of Planktonic Foraminiferal Mg, Sr, and Na to Ca Ratios With Femtosecond LA‐ICP‐MS
A quantitative method was rapidly developed for determination of Mg, Sr, and Na to ratios of biogenic carbonates of foraminifera. T. sacculifer showed no chamber-by-chamber Mg/Ca variation in calcifying temperature, but average test Mg/Ca temperature decreased by 1.4°C with the addition of the final sac-like chamber and final calcite layer. G. menardii showed a ~7°C difference among chambers suggesting upward migration in the shallow part of the thermocline.
Authors
- T. Yoshimura
- Yurika Ujiié (ORCID: https://orcid.org/0000-0001-7627-7979)
- Yoshiyuki Ishitani (ORCID: https://orcid.org/0000-0001-8941-6990)
- Naohiko OHKOUCHI
- Junichiro Kuroda (ORCID: https://orcid.org/0000-0002-2218-4854)
- Dana Ulanová (ORCID: https://orcid.org/0000-0002-9117-4043)
- Hirotoshi Endo
- Qing Chang
Institutions
- Japan Agency for Marine-Earth Science and Technology (JP)
- National Institute of Technology, Tsuruoka College (JP)
- The University of Tokyo (JP)
- Kōchi University (JP)
Publication Details
- Journal
- Rapid Communications in Mass Spectrometry
- Published
- 2026-01-19
- DOI
- https://doi.org/10.1002/rcm.70026
- Primary Topic
- Geology and Paleoclimatology Research
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Japan Society for the Promotion of Science
- Japan Agency for Marine-Earth Science and Technology