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在对中国南方不同地区海相震旦系—中三叠统基干剖面和辅助剖面详细观测研究的基础上 ,对震旦系—中三叠统进行了系统的层序划分对比 ,共识别出 1 3个超层序和 99个三级层序 ,讨论了 1 3个超层序的特征 ,建立了中国南方海相震旦系—中三叠统的层序格架。总体上看各超层序在整个中国南方不同盆地、不同相带的剖面上可以完全对比 ,但同一个超层序内所包含的三级层序个数及完整性有所不同。对于三级沉积层序来说 ,半数以上可以得到化石带较为准确的年代控制并在同一个构造分区甚至整个中国南方进行对比 ,部分层序甚至还可以在三级层序的体系域层次进行对比。表明从整个中国南方来看二级相对海平面升降变化更具有一致性 ,而三级相对海平面的变化规律在不同盆地、不同相带有所差异。
Based on the detailed observation and study of the Sinian-Middle Triassic basic and auxiliary sections of the marine strata in different areas of southern China, systematic sequence division and comparison of the Sinian-Middle Triassic system has been carried out. A total of 1 Three super-sequences and 99 third-level sequences. The characteristics of 13 super-sequences are discussed and the sequence framework of the Sinian-Middle Triassic marine sediments in southern China is established. In general, each super-sequence can be completely compared across the different basins and different facies belts in the entire southern China, but the number and integrity of the third-level sequences contained in the same super-sequence are different. For the third-order sedimentary sequence, more than half of the fossil belts can be obtained more accurate dating control in the same tectonic sub-area and even the entire southern China for comparison, part of the sequence can even be compared in the third-order sequence of system domain level . It shows that the relative second-level sea level change is more consistent from south to south of China, while the variation of third-level relative sea level is different in different basins and different facies belts.