Last glacial maximum sediment record of the southern Weddell Sea shelf ...

Abstract: The history of grounded ice-sheet extent on the southern Weddell Sea shelf during the Last Glacial Maximum (LGM) and the timing of post-LGM ice-sheet retreat are poorly constrained. Several glaciological models reconstructed widespread grounding and major thickening of the Antarctic Ice Sh...

Full description

Bibliographic Details
Main Authors: Hillenbrand, Claus-Dieter, Melles, Martin, Kuhn, Gerhard, Larter, Robert D
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 2011
Subjects:
Gravity corer
Piston corer
Giant box corer
Dredge
Gravity corer Kiel type
Multiboxcorer
IWSOE68
IWSOE69
IWSOE70
NARE77
NARE79
ANT-I/2
ANT-II/4
ANT-III/3
ANT-IV/3
ANT-V/4
ANT-VI/3
Glacier
Polarsirkel
Polarstern
Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo
Antarc*
Antarctic
Ice Sheet
Ice Shelves
Weddell Sea
Online Access:https://dx.doi.org/10.1594/pangaea.771774
https://doi.pangaea.de/10.1594/PANGAEA.771774
Description
Summary:Abstract: The history of grounded ice-sheet extent on the southern Weddell Sea shelf during the Last Glacial Maximum (LGM) and the timing of post-LGM ice-sheet retreat are poorly constrained. Several glaciological models reconstructed widespread grounding and major thickening of the Antarctic Ice Sheet in the Weddell Sea sector at the LGM. In contrast, recently published onshore data and modelling results concluded only very limited LGM-thickening of glaciers and ice streams feeding into the modern Filchner and Ronne ice shelves. These studies concluded that during the LGM ice shelves rather than grounded ice covered the Filchner and Ronne troughs, two deep palaeo-ice stream troughs eroded into the southern Weddell Sea shelf.Here we review previously published and unpublished marine geophysical and geological data from the southern Weddell Sea shelf. The stratigraphy and geometry of reflectors in acoustic sub-bottom profiles are similar to those from other West Antarctic palaeo-ice stream troughs, where ... : Supplement to: Hillenbrand, Claus-Dieter; Melles, Martin; Kuhn, Gerhard; Larter, Robert D (2012): Marine geological constraints for the grounding-line position of the Antarctic Ice Sheet on the southern Weddell Sea shelf at the Last Glacial Maximum. Quaternary Science Reviews, 32, 25-47 ...

Similar Items