本文所指的南方在构造上包括扬子准地台和华南褶皱系两个大地构造单元。区内海相沉积始于震旦纪晚期,止于中三迭世,累计沉积厚度逾万米。共沉积物主耍为碳酸盐。自震旦纪至三迭纪漫长的地质历史时期,发生了多次海水进退的变化过程,并由此导致了沉积环境和沉积相反复更替的演变过程。这些变化控制了可能生油岩在时间和空间上的 The southern part of this paper is composed of two tectonic units of the Yangtze Platform and the South China Fold System. The marine sediments in the area began in the late Sinian, ending in the Middle Triassic, accumulating a total thickness of over ten thousand meters. The co-sediment is mainly carbonate. Since the Sinian to the Triassic period of long geological history, there have been many changes in the process of seawater advance and retreat, and this has led to the evolution of the depositional environment and the repeated alternations of sedimentary facies. These changes control the possible source rocks in time and space