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本文从“十五”—2科考区域联测剖面出发,结合南海大地构造背景和以往研究成果,对南海主要的新生代沉积盆地的构造特征进行了对比分析。研究表明,“区域联测剖面”穿越的沉积盆地的构造特征具有显著的差异性,具体表现在大地构造背景、重磁场特征、盆地基底、断裂性质、构造线方向以及火成岩发育等方面；正确认识这些差异性无论对南海基础地质研究还是油气资源勘探,均具有重要的理论意义和实际价值。
Based on the synoptic profile of the “Tenth Five-Year Plan” -2 test areas and the tectonic setting of the major Cenozoic sedimentary basins in the South China Sea, this paper, based on the tectonic setting of the South China Sea and previous research results, is contrasted and analyzed. The results show that the tectonic features of the sedimentary basin traversed by the regional synoptic cross section have significant differences, which are manifested in aspects of tectonic setting, gravity and magnetic field characteristics, basal basement, fault character, direction of tectonic line and igneous rock development. Correct understanding These differences have important theoretical and practical value both for the basic geological research in the South China Sea and for oil and gas exploration.