Articles | Volume 17, issue 18
Biogeosciences, 17, 4727–4743, 2020
https://doi.org/10.5194/bg-17-4727-2020
Biogeosciences, 17, 4727–4743, 2020
https://doi.org/10.5194/bg-17-4727-2020
Research article
29 Sep 2020
Research article | 29 Sep 2020

Distribution of chlorine and fluorine in benthic foraminifera

Anne Roepert et al.

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Cited articles

Allen, K. A., Hönisch, B., Eggins, S. M., Haynes, L. L., Rosenthal, Y., and Yu, J.: Trace element proxies for surface ocean conditions: A synthesis of culture calibrations with planktic foraminifera, Geochim. Cosmochim. Ac., 193, 197–221, 2016. a
Angell, R. W.: Test morphogenesis (chamber formation) in the foraminifer Spiroloculina hyalina Schulze, J. Foramin. Res., 10, 89–101, 1980. a, b
Barker, S., Greaves, M., and Elderfield, H.: A study of cleaning procedures used for foraminiferal Mg/Ca paleothermometry, Geochem. Geophy. Geosy., 4, 8407, https://doi.org/10.1029/2003GC000559, 2003. a
Bentov, S. and Erez, J.: Impact of biomineralization processes on the Mg content of foraminiferal shells: A biological perspective, Geochem. Geophy. Geosy., 7, Q01P08, https://doi.org/10.1029/2005GC001015, 2006. a, b, c
Bonnin, E. A., Zhu, Z., Fehrenbacher, J. S., Russell, A. D., Hönisch, B., Spero, H. J., and Gagnon, A. C.: Submicron Sodium Banding in Cultured Planktic Foraminifera Shells, Geochim. Cosmochim. Ac., 253, 127–141, https://doi.org/10.1016/j.gca.2019.03.024, 2019. a
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We investigated, for the first time, the spatial distribution of chlorine and fluorine in the shell walls of four benthic foraminifera species: Ammonia tepida, Amphistegina lessonii, Archaias angulatus, and Sorites marginalis. Cross sections of specimens were imaged using nanoSIMS. The distribution of Cl and F was co-located with organics in the rotaliids and rather homogeneously distributed in miliolids. We suggest that the incorporation is governed by the biomineralization pathway.
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