FN Archimer Export Format
PT J
TI Sedimentary evolution and effects of structural controls on the development of the Zambezi mixed turbidite-contourite system (Mozambique channel, southwest Indian Ocean) since the Oligocene
BT 
AF Fierens, Ruth
   Droz, Laurence
   Jouet, Gwenael
   Rabineau, Marina
   Raisson, F.
   Babonneau, Nathalie
   Robin, C.
   Jorry, Stephan
AS 1:1;2:1;3:2;4:1;5:3;6:4;7:5;8:2;
FF 1:;2:;3:PDG-REM-GM-LGS;4:;5:;6:;7:;8:PDG-REM-GM-LGS;
C1 CNRS, Université Bretagne Occidentale, Ifremer, Geo-Ocean, UMR6538, IUEM, 29280, Plouzané, France
   Ifremer, Université Bretagne Occidentale, CNRS, Geo-Ocean, 29280, Plouzané, France
   Clastic Sedimentology Group, TotalEnergies, 64000, Pau, France
   Université Bretagne Occidentale, CNRS, Ifremer, Geo-Ocean, UMR6538, IUEM, 29280, Plouzané, France
   CNRS, Géosciences Rennes, UMR6118, Université de Rennes, Rennes, 35042, France
C2 CNRS, FRANCE
   IFREMER, FRANCE
   TOTAL, FRANCE
   UBO, FRANCE
   CNRS, FRANCE
SI BREST
SE PDG-REM-GM-LGS
UM GEO-OCEAN
IN WOS Ifremer UMR
   WOS Cotutelle UMR
   copubli-france
   copubli-univ-france
IF 4.2
TC 2
UR https://archimer.ifremer.fr/doc/00745/85666/90803.pdf
LA English
DT Article
CR MD 163 / MOBAMASIS
   PAMELA-MOZ02
   PAMELA-MOZ04
   PTOLEMEE
BO Marion Dufresne
   L'Atalante
   Pourquoi pas ?
DE ;Zambezi turbidite system;Mozambique Channel;Multichannel seismic profiles;Turbidite;Contourite;Tectonic;Late Cenozoic
AB High-resolution multichannel seismic reflection data that spans significant parts of the Mozambique margin offshore the Zambezi River permits the study of the Oligocene to present architectural evolution of the Zambezi turbidite system. In this time frame, five major depositional units are recognized that evidence a widespread spatial and temporal occurrence of both turbiditic and contouritic sedimentation. They indicate that the sedimentary regime within the turbidite system changed from dominantly aggradational during the Oligocene to mainly erosional during Miocene to an interplay of erosional and depositional processes during the Plio-Quaternary. Different episodes of incision, linked with the Serpa Pinto, Angoche and Zambezi valleys, are recognized in the upstream portion of the Zambezi Fan and highlight a westward (anticlockwise) shift of feeding axes. The central portion of the Zambezi Valley was affected by a progressive structural doming during the Miocene. The dominance of long-lasting erosional processes generated by the continuous rise of the seabed led to a deep entrenchment of the Zambezi Valley. This tectonically-controlled over-incision is believed to be the cause of the absence of Miocene levees, and has played an important role in the stabilization of the valley at its current position. Finally, our study revealed a quasi-constant development of contourite accumulations since the Late Miocene that occur most often synchronous with turbiditic sedimentation. The present study offers unique insight into the controls and stages of development of one of the largest turbidite systems in the world and demonstrates especially its susceptibility to structural activity. 
PY 2022
PD APR
SO Marine And Petroleum Geology
SN 0264-8172
PU Elsevier BV
VL 138
UT 000753455100001
DI 10.1016/j.marpetgeo.2022.105532
ID 85666
ER

EF