Paleomagnetic on three sediment cores from the Antarctic continental slope in the Weddell Sea ...

• Published in: Applied Geography
• Main Authors: Grobe, Hannes, Mackensen, Andreas, Hubberten, Hans-Wolfgang, Spieß, Volkhard, Fütterer, Dieter K
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1990
• Subjects: Gravity corer Kiel type; ANT-IV/3; Polarstern; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; Antarc*; Antarctic; Ice Shelf; Ice Shelves; Weddell Sea
• Online Access: https://dx.doi.org/10.1594/pangaea.587842; https://doi.pangaea.de/10.1594/PANGAEA.587842

Four cores from the Antarctic continental margin located between 50 and 200 km from the present-day ice shelf edge, were selected for sedimentological and mass spectrometer analysis. The first stable isotope records of the Southern Polar Ocean can be correlated in detail with global isotope stratigraphy. Together with magnetostratigraphic, sedimentological and micropaleontological data, the record provides stratigraphic and paleoceanographic information back to the Jaramillo subchron (910 kyr). Although the isotope values have been altered by diagenetic processes in the sediments, which are poor in carbonate, an interpretation is possible via correlation with the sedimentological parameters. Oxygen isotope data give indications for a meltwater spike at the beginning of interglacials, when large scale melting of parts of the ice shelves took place. The synchronous record of the benthic and planktonic d13C-signals reflect continuous bottom water formation also during glacials. Primary productivity was strictly ... : Paleomagnetic of PS1388-3 see doi:10.1594/PANGAEA.51317 ...