Determination of Stress Orientation Using Slip Lineation Data in Pliocene Around Derinkuyu Fault Nevşehir

Toprak, Vedat
Kaymakcı, Nuretdin
Slip lineation data developed on the cooling joints of a Pliocene ignirnbrite sheet are measuremed in the vicinity kuyu Fault to determine the state and the orientation of stresses in the region. The data are taken along three different survey lines in order to improve the reliability of the data as well as to observe the change in the nature of reactivation as a of distance to the main fault. The analysis involved in the evaluation of the data to find the stress are graphical solutions, namely, the and P-T dihedra methods. The solutions of the methods have shown that a, is sub-vertical. and and are sub-horizontal There is no preferred orientation of reactivation as displayed by the development of slickensided surfaces in all directions. terns of the diagrams are consistent in all survey lines indicating that the distance to the main fault is not significant. there is not any direct control of the main fault on the development of the reactivation of preexisting cooling joints, but rather the fault is a result of the present state of stress which reflects a typical example of radial stress field.