FN Archimer Export Format
PT J
TI A synthesis of the sedimentary evolution of the Demerara Plateau (Central Atlantic Ocean) from the late Albian to the Holocene
BT 
AF Fanget, Anne-Sophie
   Loncke, Lies
   Pattier, France
   Marsset, Tania
   Roest, Walter
   Tallobre, Cédric
   Durrieu de Madron, Xavier
   Hernandez Molina, F. Javier
AS 1:1;2:1;3:2,3;4:4;5:2;6:5;7:1;8:6;
FF 1:;2:;3:PDG-REM-GM-LAD;4:PDG-REM-GM-LGS;5:PDG-REM-GM-LAD;6:;7:;8:;
C1 University of Perpignan Via Domitia, Centre de Formation et de Recherche sur les Environnements Méditerranéens (CEFREM), UMR 5110, 52 Avenue Paul Alduy, 66100 Perpignan, France
   Institut français de recherche pour l'exploitation de la mer (Ifremer), Laboratoire Aléas géologiques et Dynamique sédimentaire ‐ LAD, Marine Geosciences Research Unit, CS 70, 20280 Plouzané, France
   Service Géologique de Nouvelle-Calédonie (DIMENC), 1 ter rue Unger, BP M2 – 98849, Noumea Cedex, New Caledonia
   Institut français de recherche pour l'exploitation de la mer (Ifremer), Laboratoire Géodynamique et enregistrement Sédimentaire – LGS, Marine Geosciences Research Unit, CS 70, 20280 Plouzané, France
   University Littoral Côte d’Opale, UMR 8187, LOG, Laboratoire d'Océanologie et de Géosciences, F 62 930, Wimereux, France
   Department of Earth Sciences, Royal Holloway University of London, Surrey TW20 0EX, UK
C2 UNIV PERPIGNAN, FRANCE
   IFREMER, FRANCE
   DIMENC SERV GEOL NOUVELLE CALEDONIE, FRANCE
   IFREMER, FRANCE
   UNIV LITTORAL COTE D’OPALE, FRANCE
   UNIV LONDON, UK
SI NOUMEA
   BREST
SE PDG-REM-GM-LAD
   PDG-REM-GM-LGS
IN WOS Ifremer UPR
   copubli-france
   copubli-europe
   copubli-univ-france
IF 4.348
TC 7
UR https://archimer.ifremer.fr/doc/00599/71125/69439.pdf
LA English
DT Article
CR DRADEM
   GUYAPLAC
   IGUANES
   MARGATS
BO Pourquoi pas ?
   L'Atalante
DE ;Marginal plateau;Demerara Plateau;Contourite;Bottom currents;Mass transport deposits;Atlantic Ocean
AB The Demerara Plateau, off the French Guiana and Surinam margin, corresponds to a prominent sub-horizontal marginal plateau. The interpretation of a large set of seismic data acquired along the Demerara Plateau and integration with previous seismic stratigraphy and drill studies enables a better understanding of the sedimentary evolution of the outer Demerara marginal plateau. Since the end of the transform activity (late Albian), three sedimentary evolutionary stages have been identified. 1) The Pre-contourite Stage (late Albian to early Miocene) is strongly controlled by the structure of the margin that influences the distribution pattern of post-transform deposits through differential thermal subsidence between transform and divergent segments. 2) The Transitional Stage (middle Miocene to early Pliocene) is expressed as a current-controlled erosive surface resulting from the onset of bottom-current interactions due to the establishment and strengthening of the modern thermohaline circulation that is coeval with the progressive closure of the Isthmus of Panama. 3) The Contourite Stage (middle Pliocene to Holocene) is characterized by the development of a contourite depositional system that is linked to the activity of the North Atlantic Deep Water circulation and by a complex interaction between alongslope and downslope processes. Our study highlights that marginal plateaus might be particularly prone to develop contourite features since they regionally influence ocean current dynamics in guiding and accelerating bottom contour currents. Marginal plateaus should thus be considered as a key target to study bottom current dynamics and paleocirculation patterns. 
PY 2020
PD APR
SO Marine And Petroleum Geology
SN 0264-8172
PU Elsevier BV
VL 114
UT 000514747800026
DI 10.1016/j.marpetgeo.2019.104195
ID 71125
ER

EF