FN Archimer Export Format PT J TI The Messinian Ebro River incision BT AF Pellen, Romain Aslanian, Daniel Rabineau, Marina Suc, J.P. Gorini, C. Leroux, Estelle Blanpied, C. Silenziario, C. Popescu, S.M. Rubino, J.L. AS 1:1;2:2;3:1;4:3;5:3;6:2;7:3;8:4;9:5;10:6; FF 1:;2:PDG-REM-GM-LGS;3:;4:;5:;6:PDG-REM-GM-LGS;7:;8:;9:;10:; C1 Université de Bretagne Occidentale, IUEM, Domaines océaniques, UMR 6538 CNRS, 1 place Nicolas Copernic, 29280 Plouzané, France IFREMER, Laboratoire Géodynamique et enregistrements Sédimentaires, BP70, 29280 Plouzané, France Sorbonne Universités, UPMC University Paris 06, CNRS, Institut des Sciences de la Terre de Paris (iSTeP), UMR 7193, 4 place Jussieu, 75005 Paris, France ENI GAM-Schlumberger, Milano, Italy GeoBioStratData.Consulting, 385 route du Mas Rillier, 69140 Rillieux la Pape, France TOTAL, TG/ISS, CSTTF, Avenue Laribeau, 64018 Pau Cedex, France C2 CNRS, FRANCE IFREMER, FRANCE UNIV PARIS 06, FRANCE ENI GAM-SCHLUMBERGER, ITALY GEOBIOSTRATDATA.CONSULTING, FRANCE TOTAL, FRANCE SI BREST SE PDG-REM-GM-LGS UM LGO IN WOS Ifremer UPR copubli-france copubli-europe copubli-univ-france IF 4.448 TC 12 UR https://archimer.ifremer.fr/doc/00506/61768/65747.pdf LA English DT Article CR PROGRES SEEPGOL2 VALSIS VALSIS 2 BO Le Suroît Jean Charcot DE ;NW Mediterranean Sea;Segmentation;Knickpoint;Ebro fluvial system;Messinian Salinity Crisis;Incised-valley system AB Morphological sills condition sedimentary, water and fauna exchanges between different domains. In particular, sills are crucial factors to consider during the Messinian Salinity Crisis (MSC) palaeogeographic evolution (5.97–5.33 Ma) of the NW Mediterranean area. Here we focus on the Ebro River and its up to now unexplained short Messinian onshore length (~100 km) compared to that of the Messinian Rhone River (~480 km) despite similar present-day drainage basins. Thanks to an extensive seismic and borehole dataset, we present a new interpretation of a complete 270 km long Messinian Ebro incised-valley system course underneath the present-day continental margin and bathyal basin and its related distal detrital deposits. These results favour a syn-MSC or pre-MSC opening of the (endorheic) Ebro Basin to the Mediterranean. We propose a mechanism of retrogressive erosional process, localized at structural knickpoints that shift seaward through time. This mechanism resulted in the development of the complete incised-valley system and the falling stage system tract (FSST) during the MSC sea level fall with negligible or even null retrogressive inland erosion beyond the Catalan Coastal Range. The shifting of erosion-deposition is controlled by the pre-Messinian stepwise morphology and segmentation in the Valencia, Menorca and Liguro-Provence Basins. By comparison, the Rhone system is simpler, characterized by the key role of a single knickpoint (at the shelf-break) and a steeper continental slope. Both cases highlight the relationship between kinematic, segmentation and their relative morphologies, base-level fall and erosional/depositional response particularly well expressed during the outstanding MSC associated with a huge relative sea-level drop that we measured down to -1100 m below present day sea-level. PY 2019 PD OCT SO Global And Planetary Change SN 0921-8181 PU Elsevier BV VL 181 UT 000488666200007 DI 10.1016/j.gloplacha.2019.102988 ID 61768 ER EF