FN Archimer Export Format
PT J
TI Overpressure within upper continental slope sediments from CPTU data, Gulf of Lion, NW Mediterranean Sea
BT 
AF LAFUERZA, S.
   SULTAN, Nabil
   CANALS, M.
   FRIGOLA, J.
   BERNE, Serge
   JOUET, Gwenael
   GALAVAZI, M.
   SIERRO, F. J.
AS 1:1;2:2;3:1;4:1;5:3;6:2;7:4;8:5;
FF 1:;2:PDG-DOP-DCB-GM-LES;3:;4:;5:PDG-DOP-DCB-GM-LES;6:PDG-DOP-DCB-GM-LES;7:;8:;
C1 Univ Barcelona, GRC Geociencies Marines, Dept Estratig Paleontol & Geociencies Marines, E-08028 Barcelona, Spain.
   IFREMER, F-29280 Plouzane, France.
   Univ Perpignan, F-66860 Perpignan, France.
   Fugro Engineers BV, NL-2264 SG Leidschendam, Netherlands.
   Univ Salamanca, Dept Geol, E-37008 Salamanca, Spain.
C2 UNIV BARCELONA, SPAIN
   IFREMER, FRANCE
   UNIV PERPIGNAN, FRANCE
   FUGRO ENGINEERS BV, NETHERLANDS
   UNIV SALAMANCA, SPAIN
SI BREST
SE PDG-DOP-DCB-GM-LES
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-univ-france
IF 2.445
TC 20
UR https://archimer.ifremer.fr/doc/2009/publication-6649.pdf
LA English
DT Article
DE ;Gulf of Lion;Continental slope;Overpressure;Preconsolidation pressure;Stress history
AB Data from in situ piezocone tests (CPTU) and laboratory analyses are utilized for the interpretation of the stress history of Quaternary sedimentary sequences in the upper continental slope of the Gulf of Lion, northwestern Mediterranean Sea. A CPTU based preconsolidation pressure profile referenced to the current effective stress indicates that the deposit is underconsolidated from 12 meters below the seafloor (mbsf) down to at least 150 mbsf. Excess pore pressure below 12 mbsf is further supported by results from oedometer and dissipation tests. Subseafloor pockmarks and indications of free gas in seismic reflection profiles reveal four main overpressure sources (SI-SIV) with overpressure ratios > 0.3 at subseafloor depths coinciding with levels where the dominantly silty-clayey sediment contains increased proportions of sand. We relate the excess pore pressure related to free gas due to gas exsolution processes and sea level variations driven by Pleistocene sea level changes.
PY 2009
PD JUL
SO International Journal of Earth Sciences
SN 1437-3254
PU Springer
VL 98
IS 4
UT 000266496600004
BP 751
EP 768
DI 10.1007/s00531-008-0376-2
ID 6649
ER

EF