Sea Surface Temperature (SST) Mg/Ca record for the surface-dwelling planktonic foraminifera Globigerina bulloides
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| Main Authors: | , , , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2013
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| _version_ | 1867170959383855104 |
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| author | Boussetta, Soumaya Kallel, Nejib Bassinot, Franck C Labeyrie, Laurent D Duplessy, Jean-Claude Caillon, Nicolas Dewilde, Fabien Rebaubier, Hélène |
| author_facet | Boussetta, Soumaya Kallel, Nejib Bassinot, Franck C Labeyrie, Laurent D Duplessy, Jean-Claude Caillon, Nicolas Dewilde, Fabien Rebaubier, Hélène |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We generated a high-resolution SSTMg/Ca record for the surface-dwelling planktonic foraminifera Globigerina bulloides from the core MD99-2346 collected in the Gulf of Lion, and compared it to that obtained using modern analogue techniques applied to fossil foraminiferal assemblages (SSTMAT). The two temperature records display similar patterns during the last 28,000 years but the SSTMg/Ca estimates are several degrees warmer (~+4 °C) than SSTMAT. The temperature shift between SSTMg/Ca and SSTMAT remained relatively constant over time. This seems to exclude a bias on the Mg/Ca record associated with salinity or secondary Mg-rich calcite encrustation on the foraminiferal tests during early diagenesis. Therefore, anomalously high Mg/Ca suggests either: (1) the empirical equation for G. bulloides of Elderfield and Ganssen (2000) is incorrect; or (2) there is a specific Mediterranean genotypes of G. bulloides for which a specific Mg/Ca-temperature calibration is needed. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_808949 |
| institution | PANGAEA |
| language | en |
| publishDate | 2013 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Sea Surface Temperature (SST) Mg/Ca record for the surface-dwelling planktonic foraminifera Globigerina bulloides Boussetta, Soumaya Kallel, Nejib Bassinot, Franck C Labeyrie, Laurent D Duplessy, Jean-Claude Caillon, Nicolas Dewilde, Fabien Rebaubier, Hélène 101; 99; Calculated (Shackleton, 1974); Calculated from Mg/Ca ratios according to Elderfield & Ganssen (2000); CALYPSO; Calypso Corer; DED87-07; DEDALE87; DEPTH, sediment/rock; ETNA80; Event label; from Levitus & Boyer 1994; Globigerina bulloides, Magnesium/Calcium ratio; Globigerina bulloides, δ18O; IMAGES V; Isotope ratio mass spectrometry; KET80-03; KET80-19; KET80-22; Marion Dufresne (1972); Marion Dufresne (1995); MD114; MD90-901; MD99-2344; MD99-2346; Mediterranean Sea; Mediterranean Sea Acidification in a Changing Climate; MedSeA; Neofan; PC; Piston corer; PROMETEI; ride Calmar; Sea surface temperature; Temperature, calculated We generated a high-resolution SSTMg/Ca record for the surface-dwelling planktonic foraminifera Globigerina bulloides from the core MD99-2346 collected in the Gulf of Lion, and compared it to that obtained using modern analogue techniques applied to fossil foraminiferal assemblages (SSTMAT). The two temperature records display similar patterns during the last 28,000 years but the SSTMg/Ca estimates are several degrees warmer (~+4 °C) than SSTMAT. The temperature shift between SSTMg/Ca and SSTMAT remained relatively constant over time. This seems to exclude a bias on the Mg/Ca record associated with salinity or secondary Mg-rich calcite encrustation on the foraminiferal tests during early diagenesis. Therefore, anomalously high Mg/Ca suggests either: (1) the empirical equation for G. bulloides of Elderfield and Ganssen (2000) is incorrect; or (2) there is a specific Mediterranean genotypes of G. bulloides for which a specific Mg/Ca-temperature calibration is needed. |
| title | Sea Surface Temperature (SST) Mg/Ca record for the surface-dwelling planktonic foraminifera Globigerina bulloides |
| topic | 101; 99; Calculated (Shackleton, 1974); Calculated from Mg/Ca ratios according to Elderfield & Ganssen (2000); CALYPSO; Calypso Corer; DED87-07; DEDALE87; DEPTH, sediment/rock; ETNA80; Event label; from Levitus & Boyer 1994; Globigerina bulloides, Magnesium/Calcium ratio; Globigerina bulloides, δ18O; IMAGES V; Isotope ratio mass spectrometry; KET80-03; KET80-19; KET80-22; Marion Dufresne (1972); Marion Dufresne (1995); MD114; MD90-901; MD99-2344; MD99-2346; Mediterranean Sea; Mediterranean Sea Acidification in a Changing Climate; MedSeA; Neofan; PC; Piston corer; PROMETEI; ride Calmar; Sea surface temperature; Temperature, calculated |
| url | https://doi.org/10.1594/PANGAEA.808949 |