Reflection seismic study across the continental shelf of Baba Burnu promontory of Biga Peninsula, northwest Turkey

Seismic and structural characteristics of the continental shelf of Baba Burnu promontory of Biga Peninsula, northwest Turkey were investigated by 67 km of multi-channel seismic reflection survey. Interpretation of the seismic data indicates that the faults may be divided into two groups: (i) in the southern area, almost an E–W trending major listric normal fault zone and subsidiary faults formed first, and later a strike-slip fault on the hanging wall of the major fault formed, (ii) in the northern area, a number of spatially developed parallel faults with major strike-slip components are seen. We propose that the Gulf of Edremit is a fault-bounded basin, which began to form in association with the generation of the E–W trending faulting phase during the late Miocene–early Pliocene.