Tectonic Indications for Faulting Within the Southeastern Plunge of Kosrat Anticline, Northeastern Iraq

This study deals with the faulting in Southeastern plunge of Kosrat Anticline that located within the High Folded Zone of the Iraqi Western Zagros Fold-Thrust Belt. The research focused on the normal faults facing each other’s within the southeastern part of Kosrat Anticline. The field data included attitude’s fault planes with their striations (slickenlines). The results showed that Kosrat Anticline is a part of shear zone for dextral (N-S trending) strike slip fault, where this zone related the presence of anticlines (Kosrat, Qara Sard and Sara) as folds related thrust facing each other’s. By comparison between the results of this study with the previous studies, it can be said that the growth of the NE-SW normal faults facing each other’s started from north in synchronous with the starting for the dextral movement of Little Zab Fault and established to presence of Dokan Depression as well as the obstruction for the growth of Kosrat Anticline if compared with Sara (Surdash) Anticline.