Detailed analysis of air gun lithoseismic profiles in the north Aegean basin has permitted construction of a tectonic map on the pre-existing detailed bathymetric map. The basin is structurally subdivided into three parts. (1) A continental platform borders the basin at ∼200 m depth and shows no significant internal deformation. (2) Continental slope areas, usually occurring at 400–900 m depth, are shaped by major marginal faults (>1 km throw) trending mainly northeast-southwest and secondarily northwest-southeast. The dominant structure of the basin is a 160 km–long northeast-southwest-trending fault extending from Skopelos to Limnos, which borders the basin's southern margin and accommodates...