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Article dans une revue

Mg/Ca and δ18O in the brackish shallow-water benthic foraminifer Ammonia ‘beccarii’

Abstract :

Specimens of the benthic foraminifer Ammonia beccarii were cultured in the laboratory in order to determine the relation between temperature and Mg/Ca and oxygen isotope values in their tests. Asexual reproduction in this species provides a large number of juveniles that were allowed to grow into maturity at temperatures ranging from 10 to 27 °C and at salinities ranging from 18 to 33 PSU. The Mg/Ca in a calcite increase exponentially and δ18O decreases linearly with the temperature. Salinity has no significant impact on either Mg/Ca or δ18O. We show how the combination of these two parameters can be used to reconstruct seawater δ18O and temperature in shallow marine habitats.

Keywords : Benthic Foraminifera
Type de document :
Article dans une revue
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https://hal.univ-angers.fr/hal-03278091
Contributeur : Okina Université d'Angers <>
Soumis le : lundi 5 juillet 2021 - 12:30:17
Dernière modification le : mardi 13 juillet 2021 - 03:18:54

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Citation

Takashi Toyofuku, Masayuki Suzuki, Hisami Suga, Saburo Sakai, Atsushi Suzuki, et al.. Mg/Ca and δ18O in the brackish shallow-water benthic foraminifer Ammonia ‘beccarii’. Marine Micropaleontology, Elsevier, 2011, 78 (3–4), pp.113 - 120. ⟨10.1016/j.marmicro.2010.11.003⟩. ⟨hal-03278091⟩

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