Long-lasting Microbial Methane Release at the Aquitaine Shelf Break (Bay of Biscay): Relation with the (Plio)-Pleistocene Sedimentary Progradation of the Continental Margin

Stéphanie Dupré1, Guillaume Michel1, Catherine Pierre2, Livio Ruffine3, Carla Scalabrin1, Axel Ehrhold1, Benoit Loubrieu1, Emeric Gautier1, Agnes Baltzer4, Patrice Imbert5, Anne Battani6, Eric Deville7, Pauline Dupont8, Yannick Thomas8 and Estelle Théréau8, (1)IFREMER, Plouzané, France, (2)Sorbonne University, LOCEAN, Paris, France, (3)Geo-Ocean, Univ. Brest-CNRS-IFREMER, Plouzane, France, (4)Université de Nantes, Nantes, France, (5)Total SA EP France, Pau, France, (6)IFP Energies nouvelles, Rueil-Malmaison, France, (7)IFP Energies Nouvelles, Rueil-Malmaison, France, (8)Geo-Ocean, UMR6538, CNRS, Univ Brest, Ifremer, Plouzané, France