Fault Structural Characteristics of the Early Paleozoic in the Keping Fault-Uplift,Tarim Basin:A Case Study in the Southern Keping Area
Keping Fault Uplift is located in the northwest margin of the Tarim Basin.Some Early Paleozoic fault structures remain uncharacterized due to the lack of 3D seismic imaging tecniques.In this study,we use the southern Keping area as a case study.The Early Paleozoic fault structures of the Keping Fault Uplift were sys-tematically characterilized based on detailed interpretation of newly acquired 3D seismic data,focusing on geom-etry,kinematics,and dynamics.We found that the Early Paleozoic fault structures developed in the southern Keping area.The middle Cambrian salt rock acts as the slip surface,dividing the structures into two sets of tec-tonic deformation layers:the upper and lower salt layers.The pre-salt was predominantly affected by early base-ment deformation.The fault formed from the end of the Ordovician to the beginning of the Silurian and con-trolled the distribution of the early NW-trending anticlines.The upper salt layer was influenced by Himalayan tectonic movements,with the cap slip tectonic activity using the middle Cambrian salt rock as the detachment surface.Although the earlier formed anticlines were reformed,and original primary anticlines have been pre-served.Primary traps located below the detachment plane of the middle Cambrian salt rock,which were not dis-rupted by later tectonic movements,are the most promising targets for further exploration.
Early Paleozoicfault structurelater transformationprimary anticlinesKeping Fault-Uplift
万方数据
维普
