Giant sediment drifts on the continental rise west of the Antarctic Peninsula

Multichannel seismic reflection profiles from the continental rise west of the Antarctic Peninsula between 63° and 69°S show the growth of eight very large mound-shaped sedimentary bodies. MCS profiles and long-range side-scan sonar (GLORIA) images show the sea floor between mounds is traversed by c...

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Bibliographic Details
Published in:Geo-Marine Letters
Main Authors: Rebesco, Michele, Larter, Robert D., Camerlenghi, Angelo, Barker, Peter F.
Format: Article in Journal/Newspaper
Language:unknown
Published: Springer 1996
Subjects:
Antarc*
Antarctic
Antarctic Peninsula
Online Access:http://nora.nerc.ac.uk/id/eprint/515265/
https://doi.org/10.1007/BF02202600
Description
Summary:Multichannel seismic reflection profiles from the continental rise west of the Antarctic Peninsula between 63° and 69°S show the growth of eight very large mound-shaped sedimentary bodies. MCS profiles and long-range side-scan sonar (GLORIA) images show the sea floor between mounds is traversed by channels originating in a dendritic pattern near the base of the continental slope. The mounds are interpreted as sediment drifts, constructed mainly from the fine-grained components of turbidity currents originating on the continental slope, entrained in a nepheloid layer within the ambient southwesterly bottom currents and redeposited downcurrent.

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