Sedimentology of 2 profiles from the Scotia Sea ...

Geochemical and mineralogical compositions of modern and Late Quaternary marine sediments from the Scotia Sea trace sources and transport paths of terrigenous sediment. We discuss downcore variations of compositional data of two sediment cores from the northern and southern Scotia Sea that correlate...

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Bibliographic Details
Main Authors: Diekmann, Bernhard, Kuhn, Gerhard, Rachold, Volker, Abelmann, Andrea, Brathauer, Uta, Fütterer, Dieter K, Gersonde, Rainer, Grobe, Hannes
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 2000
Subjects:
Gravity corer Kiel type
MiniCorer
Piston corer BGR type
ANT-X/5
ANT-XI/2
Polarstern
Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo
Antarc*
Antarctic
Antarctic Peninsula
Scotia Sea
Southern Ocean
Online Access:https://dx.doi.org/10.1594/pangaea.732966
https://doi.pangaea.de/10.1594/PANGAEA.732966
Description
Summary:Geochemical and mineralogical compositions of modern and Late Quaternary marine sediments from the Scotia Sea trace sources and transport paths of terrigenous sediment. We discuss downcore variations of compositional data of two sediment cores from the northern and southern Scotia Sea that correlate with fluctuations in magnetic susceptibility. Sediments were derived from very different sources at both localities, as revealed by contrasting clay-mineral assemblages. However, a common feature is the input of more basic and undifferentiated crustal material with the potential of high magnetic susceptibility during glacial periods, indicated by variable quartz/feldspar ratios and major, trace and rare earth elements. Terrigenous sediments mainly originate from nearby terrestrial sources or are introduced through interbasinal sediment transfer from adjacent seas. The observed temporal compositional variations have to be attributed to changes in the relative detrital contributions from the diverse source areas. ... : Supplement to: Diekmann, Bernhard; Kuhn, Gerhard; Rachold, Volker; Abelmann, Andrea; Brathauer, Uta; Fütterer, Dieter K; Gersonde, Rainer; Grobe, Hannes (2000): Terrigenous sediment supply in the Scotia Sea (Southern Ocean): response to Late Quaternary ice dynamics in Patagonia and on the Antarctic Peninsula. Palaeogeography, Palaeoclimatology, Palaeoecology, 162(3-4), 357-387 ...

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