دراسة الطي في تكوينات عصري الكريتاسي والترشيري في طية بيخير المحدبة من خلال الخرائط التركيبية الكنتورية

Structural study was carried on the eastern part of Bekhair anticline (Duhok section ) to test the folding phases within the formations related to Cretaceous and Tertiary period .This study adopted the structural contour maps in fold geometrical and structural analysis by construction of the Cretaceous and Tertiary formation contacts. The fold axes for the different structural contours were drawn . The study found that there was an anticlockwise rotation of seven degree in the fold axis direction .This result supported ( or agreed ) with the results obtained from fold geometric analysis by stereographic projection ,which indicates that the studied fold were underwent more than one phase of folding .