The Yakela faulted salient is a key area in the Tarim Basin where some economically important oil and gas have been discovered.The 3D seismic interpretations

in combination with the regional geological data

demonstrate that strike-slip movement occurred in the area.On plane view

many small faults are developed near the major faults

including concordant shear faults and extensional faults.These faults consist of echelon fault systems with a low-angle with the major movement direction and a limited length.The fault system along the Yanan fault is characterized by a left-step pattern

whereas a right-step pattern is shown along the Luntai fault.On sectional view

they consist of a negative flower-like structure with obvious dolphin and ribbon effects.The strike-slip movement initiated in the late Yanshanian

culminated in the early Himalayan

and terminated in the late Himalayan.The left-lateral transtensional stress from the joint action of the left-lateral shear stress and the tensile stress resulted in the strike-slip movement of the Yakelafult-salient and the deve-lopment of the associated extensional structures during the Middle-Late Yanshanian to the Early Himalayan.