Stable isotope record of foraminifera from South Atlantic sediments with reconstruction of paleotemperatures and paleosalinities ...

• Main Author: Niebler, Hans-Stefan
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1995
• Subjects: Giant box corer; MultiCorer; Gravity corer Kiel type; Piston corer BGR type; MiniCorer; CTD/Rosette; M20/2; M23/1; ANT-VI/3; ANT-VIII/3; ANT-IX/4; ANT-X/4; ANT-X/5; ANT-X/6; Meteor 1986; Polarstern; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; Antarctic; Southern Ocean; The Antarctic; Antarc*; Planktonic foraminifera; South Atlantic Ocean
• Online Access: https://dx.doi.org/10.1594/pangaea.835327; https://doi.pangaea.de/10.1594/PANGAEA.835327

Changes in surface water hydrography in the Southern Ocean (eastern Atlantic sector) could be reconstructed on the basis of isotope-geochemical and micropaleontological studies. A total of 75 high quality multicorer sediment surface samples from the southern South Atlantic Ocean and three Quaternary sediment cores, taken on a meridional transect across the Antarctic Circumpolar Current, have been investigated.The results of examining stable oxygen isotope compositions of 24 foraminiferal species and morphotypes were compared to the near-surface hydrography. The different foraminifera have been divided into four groups living at different depths in the upper water column. The 8180 differences between shallow-living (e.g. G. bulloides, N. pachyderma) and deeper-dwelling (e. g. G. inflata) species reflect the measured temperature gradient of the upper 250 m in the water column. Thus, the 6180 difference between shallow-living and deeper-living foraminifera can be used as an indicator for the vertical ... : Supplement to: Niebler, Hans-Stefan (1995): Rekonstruktionen von Paläo-Umweltparametern anhand von stabilen Isotopen und Faunen-Vergesellschaftungen planktischer Foraminiferen im Südatlantik = Reconstruction of paleo-environmental parameters using stable isotopes and faunal assemblages of planktonic foraminifera in the South Atlantic Ocean. Berichte zur Polarforschung = Reports on Polar Research, 167, 198 pp ...