FN Archimer Export Format
PT J
TI Echofacies interpretation of Pleistocene to Holocene contourites on the Demerara plateau and abyssal plain
BT 
AF Tallobre, Cédric
   Loncke, Lies
   Droz, Laurence
   Marsset, Tania
   Uusõue, Mirjam
   Roest, Walter
   Fanget, Anne-Sophie
   Bassetti, Maria-Angela
   Giresse, Pierre
   Bayon, Germain
AS 1:1;2:1;3:2;4:3;5:4;6:3;7:1;8:1;9:1;10:3;
FF 1:;2:;3:;4:PDG-REM-GM-LGS;5:;6:PDG-REM-GM-LAD;7:;8:;9:;10:PDG-REM-GM-LGS;
C1 Université de Perpignan Via Domitia, Centre de Formation et de Recherche sur les Environnements Méditerranéens (CEFREM), UMR 5110, Perpignan, France..
   Université de Bretagne Occidentale (UBO)/UMR 6538 du CNRS Domaines Océaniques, Plouzané, France..
   IFREMER, Unité de Recherche Géosciences Marines, Plouzané, France..
   Tartu Observatory, Observatooriumi 1, Tõravere, 61602 Tartumaa, Estonia..
C2 UNIV PERPIGNAN, FRANCE
   UBO, FRANCE
   IFREMER, FRANCE
   OBSERV TARTU, ESTONIA
SI BREST
SE PDG-REM-GM-LGS
   PDG-REM-GM-LAD
UM LGO
IN WOS Ifremer UPR
   copubli-france
   copubli-europe
   copubli-univ-france
IF 1.473
TC 1
UR https://archimer.ifremer.fr/doc/00680/79223/86918.pdf
LA English
DT Article
CR DRADEM
   GUYAPLAC
   IGUANES
   MARGATS
BO Pourquoi pas ?
   L'Atalante
AB Off French Guiana and Surinam, NADW and AABW oceanic currents contour the Demerara marginal plateau, which promotes the formation of contourites. We have studied these contourites thanks to a new compilation of high-resolution sub-bottom profiles calibrated by sedimentary cores. The echo-facies and isopach maps we constructed highlight a sedimentary distribution parallel to the isobaths. The presence of moats along the slope is confirmed by the observation of parallel, elongated, sedimentary depleted zones and echo-facies strongly affected by diffraction hyperbola and transparent echo-facies. We interpret these features to be related to eroded slopes and Mass Transport Deposits. In contrast, the sedimentary drifts we mapped are characterized by elongated and thick slope-parallel depocentres displaying bedded echo-facies with wave-like bedforms. According to our interpretation, they result from interactions between currents and the seafloor. Seismic wipe-outs frequently affect those drifts, possibly resulting from high water or organic contents. 
PY 2021
PD MAY
SO Interpretation-a Journal Of Subsurface Characterization
SN 2324-8858
PU Society of Exploration Geophysicists
VL 9
IS 2
UT 000654267900031
DI 10.1190/INT-2020-0159.1
ID 79223
ER

EF