FN Archimer Export Format
PT CHAP
TI Integrated geophysical, sedimentological and geotechnical investigation of submarine landslides in the Gulf of Lions (Western Mediterranean)
BT Georgiopoulou, A., Amy, L. A., Benetti, S., Chaytor, J. D., Clare, M. A., Gamboa, D., Haughton, P. D. W., Moernaut, J. and Mountjoy, J. J. (eds) 2020. Subaqueous Mass Movements and their Consequences: Advances in Process Understanding, Monitoring and Hazard Assessments. Geological Society, London, Special Publications, 500, 359–376.
AF Badhani, Shray
   Cattaneo, Antonio
   Collico, Stefano
   Urgeles, Roger
   Dennielou, Bernard
   Leroux, Estelle
   COLIN, Florent
   Garziglia, Sebastien
   Rabineau, Marina
   Droz, Laurence
AS 1:1,2;2:1;3:3;4:4;5:1;6:1;7:1;8:1;9:2;10:2;
FF 1:PDG-REM-GM-LAD;2:PDG-REM-GM-LAD;3:;4:;5:PDG-REM-GM-LGS;6:PDG-REM-GM-LGS;7:PDG-REM-GM-LAD;8:PDG-REM-GM-LAD;9:;10:;
C1 IFREMER, Unité de Recherche Géosciences Marines, Centre de Bretagne, 1625 Route de Sainte-Anne, 29280 Plouzané, France
   Univ. Brest, CNRS, Univ. Bretagne-Sud, Laboratoire Géosciences Océan, UMR6538 - IUEM, rue Dumont d'Urville, F-29280 Plouzané, France
   Igeotest, Carrer Holanda, Num 14 – Poligon Recinte Firal, 17600 Figueres, Girona, Spain
   Institut de Ciències del Mar (CSIC), Pg.Marítim de la Barceloneta, 37-49, 08003 Barcelona, Spain
C2 IFREMER, FRANCE
   UBO, FRANCE
   IGEOTEST, SPAIN
   CSIC, SPAIN
SI BREST
SE PDG-REM-GM-LAD
   PDG-REM-GM-LGS
UM LGO
UR https://archimer.ifremer.fr/doc/00611/72289/71122.pdf
LA English
DT Book section
CR PRISME 2
   PRISME 3
BO L'Atalante
   Pourquoi pas ?
AB 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 characterise 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 control the localisation of weak layers and landslide basal surfaces. 
PY 2020
DI 10.1144/SP500-2019-175
ID 72289
ER

EF