Submarine slope failure offshore Uruguay - first results

Winkelmann, Daniel, Langenbacher, Julia, Anasetti, Andrea, Strasser, Michael, Preu, Benedict, Schwenck, Tilmann and Krastel, Sebastian (2010) Submarine slope failure offshore Uruguay - first results [Poster] In: EGU General Assembly, 02.05.-07.05.2010, Vienna, Austria .

[img]
Preview
Text (Abstract)
EGU2010-14697.pdf

Download (33Kb)

Abstract

New geophysical acquired during cruise M78 with RV “Meteor” in 2009 reveal a large-scale slope failure complex. Positioned between 1800 and 3300 m water depth, the slope failure affected an area of at least 1200 km<sup>2</sup>. The failure is hosted in contouritic deposits. The morphology of the up 70 m high headwalls is underlain by a deeper reflector which we interpret as detachment. Listric faults positioned upslope these headwalls root in this detachment and are precursor of future failure at this location. The detachment correlates with a regional BSR mapped by Uruguayan colleagues. Cores recovered from 3 transects across the failure complex confirm that the acoustic transparent units are debrites. Sedimentological evidence in accordance with hydro-acoustic data indicate that debrites deposited downslope this failure complex are recent features on the slope.

Document Type: Conference or Workshop Item (Poster)
Additional Information: Abstract in: Geophysical Research Letters, Vol. 12.2010, EGU2010-14697
Keywords: Meeresgeologie; Geodynamics
Research affiliation: OceanRep > The Future Ocean - Cluster of Excellence
OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-GDY Geodynamics
OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-JRG-B4 Submarine Hazards
Related URLs:
Date Deposited: 03 Nov 2010 12:18
Last Modified: 08 May 2013 08:34
URI: http://oceanrep.geomar.de/id/eprint/9980

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...