FN Archimer Export Format
PT J
TI A geomechanical approach for the genesis of sediment undulations on the Adriatic shelf - art. no. Q04R03
BT 
AF SULTAN, Nabil
   CATTANEO, Antonio
   URGELES, R
   LEE, H
   LOCAT, J
   TRINCARDI, F
   BERNE, Serge
   CANALS, M
   LAFUERZA, S
AS 1:1;2:1;3:2;4:;5:3;6:4;7:1;8:2;9:2;
FF 1:PDG-DOP-DCB-GM-LES;2:PDG-DOP-DCB-GM-LES;3:;4:;5:;6:;7:PDG-DOP-DCB-GM-LES;8:;9:;
C1 IFREMER, Dept Geosci Marines, F-29280 Plouzane, France.
   Univ Barcelona, GRC Geociencies Marines, Dept Estratig Paleontol & Geociencies Marines, E-08028 Barcelona, Spain.
   Univ Laval, Dept Geol & Geol Engn, Quebec City, PQ G1K 7P4, Canada.
   ISMAR, CNR, I-40129 Bologna, Italy.
C2 IFREMER, FRANCE
   UNIV BARCELONA, SPAIN
   UNIV LAVAL, CANADA
   ISMAR, ITALY
SI BREST
SE PDG-DOP-DCB-GM-LES
IN WOS Ifremer jusqu'en 2018
   copubli-europe
   copubli-int-hors-europe
IF 2.979
TC 24
UR https://archimer.ifremer.fr/doc/2008/publication-4105.pdf
LA English
DT Article
DE ;Sediment deformation;Shear strength;Earthquake;Adriatic shelf
AB This study is among the first to examine the genesis of the seafloor and subsurface undulations on the Adriatic continental shelf by integrating stratigraphic information and in situ and laboratory geotechnical measurements. Interpretation of sediment behavior is based on a 32-m-long borehole crossing ( 1) a possible shear plane and ( 2) a silty clay layer at about 20 m below seafloor (mbsf) on which sediment undulations are rooted and could be interpreted as a potential weak layer succession. Our main results in terms of triggering mechanism for the observed undulations show that under an earthquake, liquefaction and/or failure of the silty-clay sediments ( weak layer) leading to deformation of the upper more cohesive sediments is possible only when such a layer is buried by less than 5 m. For greater burial thicknesses, this silty clay becomes stable under the confining lithostatic pressure exerted by the overlying sediment. This work shows that the seafloor and subsurface undulations observed in the study area are most probably the result of an early deformation process of the seafloor followed by a depositional process.
PY 2008
PD APR
SO Geochemistry Geophysics Geosystems - G3
SN 1525-2027
PU American Geophysical Union
VL 9
IS 4
UT 000255201200001
DI 10.1029/2007GC001822
ID 4105
ER

EF