Sedimentology on Quaternary depoits from the Weddell Sea continental slope ...

Sedimentological, geochemical (in particular biogenic content) and physical properties from the Weddell, Lazarev and Cosmonaut seas along the Antarctic continental margin were analysed in order to reconstruct the late Quaternary productivity and sedimentary processes of this region. Seven undisturbe...

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Bibliographic Details
Main Author: Bonn, Wolfgang J
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 2009
Subjects:
Gravity corer Kiel type
ANT-VI/3
ANT-VIII/6
ANT-IX/3
Polarstern
Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo
Silicon Cycling in the World Ocean SINOPS
Antarc*
Antarctic
Antarktis*
Ice Sheet
Weddell Sea
Online Access:https://dx.doi.org/10.1594/pangaea.729792
https://doi.pangaea.de/10.1594/PANGAEA.729792
Description
Summary:Sedimentological, geochemical (in particular biogenic content) and physical properties from the Weddell, Lazarev and Cosmonaut seas along the Antarctic continental margin were analysed in order to reconstruct the late Quaternary productivity and sedimentary processes of this region. Seven undisturbed sediment cores were chosen. The sediments represent a depositional period from 400,000 years to the recent time.The late Quaternary climatic changes influence changes in the paleoenvironmental and the geological conditions, directly forced by the behaviour of the Antarctic ice sheet. All investigated cores are positioned within the oscillating ice sheet area and reflect the influence of the ice sheet in response to the climatic cycles.The organic carbon, carbonate, biogenic opal, and barium contents were measured, andlor calculated, together with the determination by XRD of the terrigenous components such as quartz and plagioclase (expressed as relative to corundum standard). The contents of organic carbon and ... : Supplement to: Bonn, Wolfgang J (1995): Biogenopal und biogenes Barium als Indikatoren für spätquartäre Produktivitätsänderungen am antarktischen Kontinentalhang, atlantischer Sektor (Biogenic opal and barium: Indicators for late Quarternary changes in productivity at the Antarctic continental margin, Atlantic Sector). Berichte zur Polarforschung = Reports on Polar Research, 180, 186 pp ...

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