Sedimentology on cores off the South Orkney Plateau ...

Grab samples and cores for sedimentological studies were retrieved along a N-S transect of the South Orkney Plateau margin. On the basis of morphology, the margin has been subdivided into shelf, upper continental slope, and a lower slope region cut by basins and ridges.Grain size, Sand component, an...

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Bibliographic Details
Main Author: Grünig, Sigrun
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 1991
Subjects:
Piston corer Meischner small
Giant box corer
Gravity corer Kiel type
ANT-II/3
Polarstern
Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo
South Orkney Plateau
Weddell
Weddell Sea
Antarc*
Antarctica
Antarktis*
Online Access:https://dx.doi.org/10.1594/pangaea.860528
https://doi.pangaea.de/10.1594/PANGAEA.860528
Description
Summary:Grab samples and cores for sedimentological studies were retrieved along a N-S transect of the South Orkney Plateau margin. On the basis of morphology, the margin has been subdivided into shelf, upper continental slope, and a lower slope region cut by basins and ridges.Grain size, Sand component, and clay mineralogy were determined as well as water, organic carbon and carbonate contents. In addition, vane shear strength, magnetic intensity and the proportion of ice-rafted debris were measured, dating was done by detailed magnetic stratigraphy, the biofluctuation of the radiolarian Cycladophora davisiana and 230-Thorium analyses.Sediment facies distribution is controlled by numerous factors such as regional bathymetry and circulation, biogenic productivity, seasonal ice cover and the deposition of terrigenous detritus by ice-rafting, bottom water transport and/or slumping. The complex interrelationship between these factors results in three main categories of sediment facies. The diamict facies is interpreted ... : Supplement to: Grünig, Sigrun (1991): Quartäre Sedimentationsprozesse am Kontinentalhang des Süd-Orkney-Plateaus im nordwestlichen Weddellmeer (Antarktis) (Quaternary sedimentation processes on the continental margin of the South Orkney Plateau, NW Weddell Sea (Antarctica). Berichte zur Polarforschung = Reports on Polar Research, 75, 196 pp ...

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