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

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...

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Bibliographic Details
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
Antarc*
Antarctic
Planktonic foraminifera
South Atlantic Ocean
Southern Ocean
Online Access:https://dx.doi.org/10.1594/pangaea.835327
https://doi.pangaea.de/10.1594/PANGAEA.835327
Description
Summary: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 ...

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