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从相分析着手,重点剖析京山、崇阳两条岩相剖面,系统地研究了岩石、古生物、地球化学组分及分布规律。在此基础上提出了中扬子二叠系碳酸盐岩岩相模式。二叠系碳酸盐岩属台地碳酸盐岩岩相,包括潮坪、局限台地、台地浅滩、开阔台地A、开阔台地B、边缘浅滩、斜坡等七个次级相。该模式较合理地解释了中扬子二叠系碳酸盐岩的发育规律,并对硅质岩、白云岩的成因提出了新认识。
Starting from the phase analysis, the paper focuses on the profile analysis of the two lithofacies in Jingshan and Chongyang, systematically studied the components of rock, paleontology and geochemistry and their distribution. On this basis, the lithofacies model of the Middle Yangtze Permian carbonate rocks is proposed. Permian carbonate rocks are platform carbonate rock facies, including tidal flat, confined mesa, shallow platform, open platform A, open platform B, edge shoals, slopes and other seven secondary phases. This model explains the development of the Middle Yangtze Carbonate more rationally and brings forward a new understanding of the genesis of the cherts and dolomites.