The Northern Branch of the North Anatolian Fault System controls and deforms Izmit Basin Sapanca Lake in study area. Unlike Basin, oblique normal faults with WNW–ESE trending maximum length 5 km south basin have contributed to deformation process formation Basin. fault sets mainly incline north. N-S width dextral strike-slip active was determined as 9 at 3.8 basin. Further, minimum principal st...