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Geomorphology of the onset area of a paleo-ice stream, Marguerite Bay, Antarctic Peninsula

Reconstructing ice-sheet dynamics from subglacial sediments and landforms. Special issue

Auteurs :
ANDERSON, J.B.
OAKES FRETWELL, L.
Ó COFAIGH, C.
STOKES, C.

Description :
Geomorphic features indicate that both glacial and melt-water erosion characterize the onset area of the ancestral Marguerite Ice Stream. The large size of these features indicates that they formed over repeated glacial cycles, most recently during the Last Glacial Maximum. Ice drainage within the bay and on the inner continental shelf was strongly influenced by tectonic fabric. The glacially sculptured geomorphic features within Marguerite Bay co-exist with anastomosing, radial and relatively straight channels, which become increasingly focused in a seaward direction. This implies that a well organized subglacial drainage system existed within the bay at some point in the past.


Type de document :
Article de monographie

Source :
Earth surface processes and landforms, issn : 0197-9337, 2008, vol. 33, n°. 4, p. 503-512, nombre de pages : 10, Collation : Illustration, Références bibliographiques : 31 ref.

Date :
2008

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley

Langue :
Anglais
Droits :
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