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无锡嵩山下三叠统碳酸盐浅滩相剖面在中下扬子区具有特殊性和代表性。碳酸盐滨岸浅滩相剖面不仅最灵敏地记录了海平面变迁历史，而且具有独特的副层序结构和特殊的层序识别和研究方法，在层序地层研究中占有重要地位。借助于与微古地理相结合的副层序分析方法，在嵩山下三叠统露头剖面上共识别出３个２类三级层序，并分别讨论了各层序的发育特点和识别分析方法。
The lower Triassic carbonate shoal facies in Songshan, Wuxi is characterized and representative in the middle and lower Yangtze area. Carbonate coastal shoal facies profile not only records the most sensitive history of sea level change, but also has unique secondary sequence structure and special sequence identification and research methods, which play an important role in the study of sequence stratigraphy. By means of the secondary sequence analysis method combined with the micro-geography, three second-level and third-level sequences were identified on the Lower Triassic outcrop of Songshan, and the developmental characteristics and identification and analysis methods of each sequence were discussed respectively .