Mass wasting at the base of the South central Chilean continental margin: the Reloca Slide.

Völker, David, Weinrebe, Reimer Wilhelm, Behrmann, Jan Hinrich, Bialas, Jörg and Klaeschen, Dirk (2009) Mass wasting at the base of the South central Chilean continental margin: the Reloca Slide. Advances in Geosciences, 7 . pp. 1-13. DOI 10.5194/adgeo-22-155-2009.

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Abstract

Offshore south central Chile (35° S–42° S), the morphology of the lowermost continental slope and trench floor witnesses a voluminous submarine mass-wasting event. The blocky slide body deposited in the Chile Trench at 73°46´ W 35°35´ S was targeted for study during RRS JAMES COOK Cruise JC23 and termed Reloca Slide. Its size of about 24 km3, its steep and high headscarp, the spatial distribution of slide deposits and the cohesive nature of major slide blocks make it interesting to address the issue of tsunami generation. We have obtained seismic reflection data that partly reveal the internal structure of the slide body. Gravity core samples were retrieved that will allow the slide to be dated and linked to the history of sedimentation and slope stability along this particular segment of the Chilean convergent margin. At present we assume a Holocene age for the sliding event.

Document Type: Article
Keywords: mass wasting, Submarine landslide, slope stability, tsunami hazard, Chile
Research affiliation: OceanRep > SFB 574 > A1
OceanRep > SFB 574
OceanRep > The Future Ocean - Cluster of Excellence
OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-GDY Marine Geodynamics
Refereed: Yes
Open Access Journal?: Yes
DOI etc.: 10.5194/adgeo-22-155-2009
ISSN: 1680-7359
Projects: Future Ocean
Contribution Number:
ProjectNumber
SFB 574182
Expeditions/Models/Experiments:
Date Deposited: 10 Dec 2009 16:39
Last Modified: 05 Sep 2016 11:42
URI: http://oceanrep.geomar.de/id/eprint/6656

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