Sedimentology and age models of cores from the Antarctic continental margin in the eastern Weddell Sea ...

To reveal the late Quaternary paleoenvironmental changes at the Antarctic continental margin, we test a lithostratigraphy, adjusted to a stable isotope record from the eastern Weddell Sea. The stratigraphy is used to produce a stacked sedimentological data set of eleven sediment cores. We derive a g...

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Bibliographic Details
Main Authors: Grobe, Hannes, Mackensen, Andreas
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 1992
Subjects:
gcmd1
timesliceagemodel
Gravity corer Kiel type
Giant box corer
MultiCorer
ANT-I/2
ANT-III/3
ANT-IV/3
ANT-V/4
ANT-VI/3
Polarstern
Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo
Antarc*
Antarctic
Ice Sheet
Weddell Sea
Online Access:https://dx.doi.org/10.1594/pangaea.588236
https://doi.pangaea.de/10.1594/PANGAEA.588236
Description
Summary:To reveal the late Quaternary paleoenvironmental changes at the Antarctic continental margin, we test a lithostratigraphy, adjusted to a stable isotope record from the eastern Weddell Sea. The stratigraphy is used to produce a stacked sedimentological data set of eleven sediment cores. We derive a general model of glacio marine sedimentation and paleoenvironmental changes at the East Antarctic continental margin during the last two climatic cycles (300 kyr).The sedimentary processes considered include biological productivity, ice-rafting, current transport, and gravitational downslope transport. These processes are controlled by a complex interaction of sea-level changes and paleoceanographic and paleoglacial conditions in response to changes of global climate and local insolation. Sedimentation rates are mainly controlled by ice-rafting which reflects mass balance and behaviour of the Antarctic ice sheet. The sedimentation rates decrease with distance from the continent and from interglacial to glacial. ... : Supplement to: Grobe, Hannes; Mackensen, Andreas (1992): Late Quaternary climatic cycles as recorded in sediments from the Antarctic continental margin. In: Kennett, James P & Warnke, Detlef A (eds.), The Antarctic Paleoenvironment: a perspective on Global Change, Antarctic Research Series, American Geophysical Union, DOI:10.1029/AR056p0349, 56, 349-376 ...

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