FN Archimer Export Format PT J TI Geology of the Ionian Basin and margins: a key to the East Mediterranean geodynamics BT AF Tugend, J. Chamot‐Rooke, N. Arsenikos, S. Blanpied, C. Lamotte, D. Frizon AS 1:1;2:1;3:1;4:2;5:3; FF 1:;2:;3:;4:;5:; C1 Laboratoire de Géologie, CNRS UMR 8538, Ecole normale supérieure, PSL Research University Paris,France Sorbonne Université, CNRS‐INSU, Institut des Sciences de la Terre Paris, ISTeP UMR 7193 Paris ,France Département Géosciences et EnvironnementUniversité Cergy‐Pontoise Cergy‐Pontoise Cedex, France C2 ENS, FRANCE UNIV PARIS 06, FRANCE UNIV CERGY PONTOISE, FRANCE IF 3.543 TC 26 UR https://archimer.ifremer.fr/doc/00505/61675/65605.pdf https://archimer.ifremer.fr/doc/00505/61675/65606.pdf LA English DT Article CR ARCHIMEDE PASIPHAE PASIPHAE BO Le Nadir Le Noroit Jean Charcot DE ;Ionian Basin;East Mediterranean Basins;short-lived oceanic basin;Neo-Tethys;Central Atlantic AB We revisit the nature, structure and evolution of the Ionian Basin and its surrounding passive margins (Apulia, Eastern Sicily/Malta, and Cyrenaica margins). Relying on geological observations (wells, dredges and dives) and seismic calibrations from the surrounding platforms and escarpments, we present age correlations for the deepest sedimentary sequences of the Ionian Basin. Two‐ship deep refraction seismic data combined with reprocessed reflection seismic data enable us to identify, characterize and map these thick sedimentary sequences and to present a consistent seismic stratigraphy across the basin. At a larger scale, we present new geological transects illustrating the tectono‐stratigraphic relationships between the Ionian Basin and its surrounding rifted margins. On this basis, we suggest that a Late Triassic‐Early Jurassic rifting preceded the late Early Jurassic to Middle Jurassic formation of the Ionian Basin. The combination of geophysical and geological arguments suggests that the entire deep basin is floored with oceanic crust of normal thickness, but with high seismic velocity in the upper part. Upscaling our results in the framework of the Eastern Mediterranean, we propose that the Ionian Basin represents the remnant of a short‐lived oceanic basin resulting from the interaction between two propagating oceans: the Central Atlantic and the Neo‐Tethys. PY 2019 PD AUG SO Tectonics SN 0278-7407 PU American Geophysical Union (AGU) VL 38 IS 8 UT 000497850300006 BP 2668 EP 2702 DI 10.1029/2018TC005472 ID 61675 ER EF