The pre-existing faults and the development of gypsum salt deposits play an important role in controlling structural deformation. There are considerable differences in fold number, structural style and structural evolution, which show obvious structural segmentation. Based on the field geology, drilling wells and seismic data, this paper analyzes the overall structural deformation characteristics and structural evolution of each segment in the eastern Kuqa Depression. In conclusion：The eastern part of Kuqa Depression can be divided into Tugeerming segment and Yiqikelike-Yaken segment. The structural style of Tugeerming segment is relatively simple. It is an anticline as a whole, which is controlled by the high angle pre-existing basement fault. The Cenozoic structural deformation is limited in the hanging wall of pre-existing fault, and it has the characteristics of overstep propagation. The high point of anticline migrates northward. The Yiqikelike-Yaken segment is characterized by multiple anticlines, basement-involved deformation behind and thin skin detachment ahead, delamination deformation and piggyback propagation, indicating that its structural deformation is controlled by the pre-existing fault and the gypsum in the Jidike Formation. The pre-existing faults and the characteristics of gypsum salt deposits are important factors affecting the spatial-temporal differences of structural deformation in the eastern Kuqa Depression.
Cheng Ya Wu Chao Li Longjiang Xie Huiwen Chen Hanlin Wei Hongxing Lin Xiubin Cheng Xiaogan. Influence of pre-existing faults and gypsum salt deposits on structural deformation in the eastern Kuqa Depression[J]. Chinese Journal of Geology, 2020, 55(2): 352-368.