Abstract: The area of study includes a part of the North Anatolian fault zone was affected by the Hereynian andAlpine orogenic and epeirogenie movements. As a result, the rocks of the region were folded and faulted. Traces of theHereynian movements were generally obliterated by the orogeny.In Lâdik-Destek region, the folds of either Hercynian-Alpine system have on almost east-west trend, whilethe stress causing these folds was effective an the-south direction.The faults in the area are usually parallel to the fold axes. Moreover, the transversal and oblique faults werealso developed as a secondary system. These secondary faults having a general north-south direction are youngerthan the previous ones.One of the most important structures of the studied area is of course the North Anatolian earth-quake fault.It is highly probable that the fault was formed in an older fracture zone towards the end of Miocene. Total displacement sofar measured along this dextral fault is about 80-85 km. The movement of this presently active fault may bea result of pushing of the Anatolian plate pushed westwards by the Arabian plate.