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本文基于我所１９８８年、１９８９年两次南沙地质调查以及大量地震剖面的综合分析，系统阐述了南海西南断裂构造的特征及性质，指出南海西南主千断裂为多期活动的走滑断裂，是它们控制了油气盆地的形成与演化以及局部油气藏的形成。
Based on the comprehensive analysis of the 1988 Nansha geological survey in 1988 and a large number of seismic profiles, this paper systematically expounds the characteristics and characteristics of the southwestern South China Sea fault structure, and points out that the main faults in southwestern South China Sea are multi-phase strike-slip faults. They control the formation and evolution of oil and gas basins and the formation of local reservoirs.