FN Archimer Export Format
PT J
TI On the combination of the planktonic foraminiferal Mg/Ca, clumped (Δ47) and conventional (δ18O) stable isotope paleothermometers in palaeoceanographic studies
BT 
AF Peral, Marion
   Bassinot, Franck
   Daëron, Mathieu
   Blamart, Dominique
   Bonnin, Jérôme
   Jorissen, Frans
   Kissel, Catherine
   Michel, Elisabeth
   Waelbroeck, Claire
   Rebaubier, Helene
   Gray, William R
AS 1:1;2:1;3:1;4:1;5:2;6:3;7:1;8:1;9:4;10:1;11:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;
C1 Laboratoire des Sciences du Climat et de l’Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, France
   Université de Bordeaux, CNRS, Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC), UMR 5805, Allée Geoffroy St Hilaire, 33615 Pessac Cedex, France
   UMR CNRS 6112 LPG-BIAF Bio-Indicateurs Actuels et Fossiles, Université d’Angers, 2, Boulevard Lavoisier, 49045 Angers Cedex, Franc
   LOCEAN/IPSL, Sorbonne Université-CNRS-IRD-MNHN, UMR7159, Paris, France
C2 UNIV PARIS SACLAY, FRANCE
   UNIV BORDEAUX, FRANCE
   UNIV ANGERS, FRANC
   UNIV SORBONNE, FRANCE
IF 5
TC 4
UR https://archimer.ifremer.fr/doc/00821/93251/99878.pdf
LA English
DT Article
CR IMAGES 1-MD101
   MD 119 / TIP 2000
   MD 127 / PAGE
   MD 132 / P.I.C.A.S.S.O.-IMAGES11
   MD 136 / VIGO
   MD 168 / AMOCINT (IMAGES XVII)
   MD 189 / INDIEN SUD 2
   MD 190 / CIRCEA
BO Marion Dufresne
AB Assuming that foraminiferal clumped isotope (Δ47) values are independent of seawater salinity and pH, the combination of Mg/Ca, δ18O and Δ47 values, may in theory allow us to disentangle the temperature, salinity/δ18Osw and pH signals. Here, we present a new Mg/Ca-Δ47 dataset for modern planktonic foraminifera, from various oceanographic basins and covering a large range of temperatures (from 0.2 to 25.4 °C). These measurements were performed on the same samples and species as the ones used for the foraminiferal Δ47 calibration of Peral et al. (2018), allowing comparison between both Mg/Ca and Δ47 paleothermometers (excluding the two benthic foraminiferal data points). There is a good agreement between these two paleothermometers when the Mg/Ca-temperature is corrected for seawater salinity and pH, suggesting that foraminiferal Δ47 may not be influenced by salinity or pH. However, our results show that Δ47 temperature uncertainties still limit our ability to reconstruct pH and δ18Osw from the combination of Mg/Ca, δ18O and Δ47 in a useful manner. We also find that disagreements between Mg/Ca and Δ47 values in G. bulloides persist after correction for vital, salinity and pH effects, suggesting that other process(es) may also influence Mg/Ca in this species. This study also provides an updated I-CDES version of the previously published planktonic and benthic foraminiferal Δ47 calibration of Peral et al. (2018), covering a range of temperature from −2 to 25.4 °C. 
PY 2022
PD DEC
SO Geochimica Et Cosmochimica Acta
SN 0016-7037
PU Elsevier BV
VL 339
UT 000887436800003
BP 22
EP 34
DI 10.1016/j.gca.2022.10.030
ID 93251
ER

EF