The length of Aegean arc in south-west Turkey has been deter mined by the use of intermediate focal depth earthquakes which occurred between 1900-1985 in the south-west of Turkey (34.00- 38.00 Nand 27.00-32.00 E). Intermediate focal depth earthqua kes in south-west Turkey revealed the presence of a seismic Benioff zone caused by underthrusting of the African litho spheric plate by the Aegean arc. In order to determine the geometry of underthrustin%detailed epicenter maps of the in termediate depth earthquakes in south-west of Turkey were pre pared. It is known that these earthquakes brought...