FN Archimer Export Format PT J TI Contourite on the Limpopo Corridor, Mozambique margin: Long‐term evolution, facies distribution and Plio‐Quaternary processes BT AF Babonneau, Nathalie Raisson, François Genêt, Adrien Lopes, Ugo Fierens, Ruth Miramontes, Elda Révillon, Sidonie Rabineau, Marina Droz, Laurence BELLENEY, Deborah MOULIN, Maryline Aslanian, Daniel AS 1:7,8;2:2;3:7;4:7;5:7;6:3,4;7:5,7;8:7;9:8;10:1,6;11:1;12:1; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:PDG-REM-GM-LGS;11:PDG-REM-GEOOCEAN-GIPS;12:PDG-REM-GEOOCEAN-GIPS; C1 UMR 6538 GEO‐OCEAN, Univ Brest, CNRS, Ifremer, Univ. Bretagne‐Sud 29280 Plouzané ,France TotalEnergies, CSTJF, Avenue Larribau 64000 Pau ,France MARUM‐Center for Marine Environmental Sciences University of Bremen Bremen 28359, Germany Faculty of Geosciences University of Bremen Bremen 28359 ,Germany SEDISOR, place N. Copernic 29280 Plouzané, France UMR 6554, LETG Littoral, Environnement, Télédétection, Géomatique UMR 6554, Institut Universitaire Européen Mer, UBO, Place Copernic 29280 Plouzané ,France UMR 6538 GEO‐OCEAN, Univ Brest, CNRS, Ifremer, Univ. Bretagne‐Sud 29280 Plouzané ,France UMR 6538 GEO‐OCEAN, Univ Brest, CNRS, Ifremer, Univ. Bretagne‐Sud 29280 Plouzané ,France C2 IFREMER, FRANCE TOTAL ENERGIES, FRANCE UNIV BREMEN MARUM, GERMANY UNIV BREMEN, GERMANY SEDISOR, FRANCE UBO, FRANCE CNRS, FRANCE UBO, FRANCE SI BREST SE PDG-REM-GM-LGS PDG-REM-GEOOCEAN-GIPS UM GEO-OCEAN IN WOS Ifremer UMR WOS Cotutelle UMR copubli-france copubli-europe copubli-univ-france IF 3.5 TC 3 UR https://archimer.ifremer.fr/doc/00795/90745/96339.pdf LA English DT Article CR PAMELA : PASSIVE MARGINS EXPLORATION LABORATORIES PAMELA-MOZ03 PAMELA-MOZ05 BO Pourquoi pas ? DE ;Bottom current;calcarenite;contourite;drift;moat;Mozambique AB Bottom currents are key processes that contribute to the shaping of submarine slopes, with the redistribution of sediments in contourite systems. Despite numerous recent studies on contourite systems, the complexity and diversity of these sedimentary systems are still not fully understood and often underestimated. Their understanding requires comprehensive works integrating all scales from seismic architecture to microfacies. This paper focuses on a contouritic ridge located between 2000 m and 2500 m water depth on the Mozambique margin. Bathymetry, seismic data and piston cores collected during the PAMELA-MOZ3 cruise allow a multi-scale study from large depositional geometries to sedimentary facies. At the seismic scale, the contouritic ridge show three stages of evolution with: (i) initiation and development of the drift/moat system; (ii) an intermediate stage with successive incisions and aggradations; and (iii) moat infill and drift erosion during the Plio-Quaternary. Plio-Quaternary deposits are composed of hemipelagic, turbiditic and contouritic facies filling the moat. Coarse-grained contouritic facies, dominated by planktonic foraminifera, are identified on the western flank of the ridge between the moat infill and the erosional area at the top of the ridge. They consist of condensed deposits, with sedimentation rate about 0.3 cm/ka, indicating a strong and stable bottom current that winnows away the fine-grained component. This facies could be present more generally in intermediate position between erosion and depositional areas in contourite systems. At present, the contourite system is located at the transition depth between North Atlantic Deep Water and Antarctic Intermediate Water. Trajectories of bottom currents are complex and interact with sporadic turbidity currents and anti-clockwise eddies that participate in reshaping the sea floor morphology. Although Plio-Quaternary depositional geometries indicate the end of drift/moat development, the moat filling and drift erosion are also related to bottom currents and constitute atypical contouritic sedimentation. PY 2023 PD APR SO Sedimentology SN 0037-0746 PU Wiley VL 70 IS 3 UT 000876331600001 BP 728 EP 758 DI 10.1111/sed.13045 ID 90745 ER EF