Integrated geophysical, sedimentological and geotechnical investigation of submarine landslides in the Gulf of Lions (Western Mediterranean)

Integrated geophysical, sedimentological and geotechnical investigation of submarine landslides in the Gulf of Lions (Western Mediterranean)

18 pages, 9 figures, 1 table

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Main Authors: Badhani, Shray, Cattaneo, Antonio, Collico, Stefano, Urgeles, Roger, Dennielou, Bernard, Leroux, Estelle, Colin, Florent, Garziglia, Sébastien, Rabineau, M., Droz, Laurence
Other Authors: European Commission
Format: capítulo de libro biblioteca
Language:English
Published: Geological Society of London 2020-05
Online Access:http://hdl.handle.net/10261/218527
http://dx.doi.org/10.13039/501100000780
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spelling dig-icm-es-10261-2185272020-08-25T01:15:43Z Integrated geophysical, sedimentological and geotechnical investigation of submarine landslides in the Gulf of Lions (Western Mediterranean) Badhani, Shray Cattaneo, Antonio Collico, Stefano Urgeles, Roger Dennielou, Bernard Leroux, Estelle Colin, Florent Garziglia, Sébastien Rabineau, M. Droz, Laurence European Commission 18 pages, 9 figures, 1 table The Gulf of Lions presents recurring mass-transport deposits (MTDs) within the Plio-Quaternary sediments, suggesting a long history of mass movements. The two large, surficial MTDs are located on the eastern and western levee of the Rhone canyon over an area exceeding 6000 km2 and volumes exceeding 100 km3. Both MTDs were emplaced 21 ka ago (peak of the Last Glacial Maximum), suggesting a common trigger. Here, we present a multidisciplinary high-resolution geophysical, sedimentological and in-situ geotechnical study of the source and deposit areas of both MTDs to characterize distinct expressions of sediment deformation as well as their spatial and chronological distributions. We show the internal structure of mass movements and resulting MTDs with unprecedented details that were previously represented in the conventional seismic data as transparent and chaotic facies. The combination of multidisciplinary approaches shows new insights into the nature of basal surfaces of the slope failures. In particular, we show that the basal surfaces of the failures consist of clay-rich material contrasting with the overlying turbiditic deposits, suggesting that a strong lithological heterogeneity exists within the strata. We suggest that this change in lithology between clay-rich sediments and turbiditic sequences most likely controls the localization of weak layers and landslide basal surfaces This work and the PhD of Shray Badhani are funded by the European Union's Horizon 2020 research and innovation programme under the Marie-Skłodowska-Curie grant via project ITN SLATE (grant agreement no. 721403) Peer reviewed 2020-08-24T10:31:55Z 2020-08-24T10:31:55Z 2020-05 capítulo de libro http://purl.org/coar/resource_type/c_3248 Subaqueous Mass Movements and their Consequences: Advances in Process Understanding, Monitoring and Hazard Assessments: 359-376 (2020) Geological Society Special Publications 500: 359-376 (2020) 978-1-78620-477-6 0305-8719 http://hdl.handle.net/10261/218527 10.1144/SP500-2019-175 2041-4927 http://dx.doi.org/10.13039/501100000780 en #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/H2020/721403 Preprint https://doi.org/10.1144/SP500-2019-175 Sí open Geological Society of London
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
language English
description 18 pages, 9 figures, 1 table
author2 European Commission
author_facet European Commission
Badhani, Shray
Cattaneo, Antonio
Collico, Stefano
Urgeles, Roger
Dennielou, Bernard
Leroux, Estelle
Colin, Florent
Garziglia, Sébastien
Rabineau, M.
Droz, Laurence
format capítulo de libro
author Badhani, Shray
Cattaneo, Antonio
Collico, Stefano
Urgeles, Roger
Dennielou, Bernard
Leroux, Estelle
Colin, Florent
Garziglia, Sébastien
Rabineau, M.
Droz, Laurence
spellingShingle Badhani, Shray
Cattaneo, Antonio
Collico, Stefano
Urgeles, Roger
Dennielou, Bernard
Leroux, Estelle
Colin, Florent
Garziglia, Sébastien
Rabineau, M.
Droz, Laurence
Integrated geophysical, sedimentological and geotechnical investigation of submarine landslides in the Gulf of Lions (Western Mediterranean)
author_sort Badhani, Shray
title Integrated geophysical, sedimentological and geotechnical investigation of submarine landslides in the Gulf of Lions (Western Mediterranean)
title_short Integrated geophysical, sedimentological and geotechnical investigation of submarine landslides in the Gulf of Lions (Western Mediterranean)
title_full Integrated geophysical, sedimentological and geotechnical investigation of submarine landslides in the Gulf of Lions (Western Mediterranean)
title_fullStr Integrated geophysical, sedimentological and geotechnical investigation of submarine landslides in the Gulf of Lions (Western Mediterranean)
title_full_unstemmed Integrated geophysical, sedimentological and geotechnical investigation of submarine landslides in the Gulf of Lions (Western Mediterranean)
title_sort integrated geophysical, sedimentological and geotechnical investigation of submarine landslides in the gulf of lions (western mediterranean)
publisher Geological Society of London
publishDate 2020-05
url http://hdl.handle.net/10261/218527
http://dx.doi.org/10.13039/501100000780
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