Abstract:

 Based on the interpretation of the latest 3D seismic profiles, this study discussed the characteristic and evolution of the transfer zone in Yudong 3 fault belt in Tarim Basin according to the analysis of displacement-distance method. The Yubei area mainly consists of a number of faults striking northwest. From the northeast section to the southwest section, the direction of the main fault gradually changed from southeast to northwest. According to the combination and intersection relations of fault structures in this area, the transfer zone in transform section was interpreted as convergent-overlap type based on the classification of Morley. The transfer zone between the two sections has transferred their displacements and keeps the conservation of fault displacements in Yudong 3 fault zone. The evolution of this transfer zone can be divided into three stages, i.e. the formation of isolated reverse fault, formation of transfer-zone and complication of transfer zone.