湖南慈利晚二叠世海绵礁与珊瑚礁的古生态研究

中国南方晚二叠世生物礁分布广泛，但绝大多数属于海绵礁，湖南慈利晚二叠世除发育有海绵礁外，还有至今为止发现的世界上发育最好的古代珊瑚礁，而且海绵礁与珊瑚礁在同一条带上连续分布；因此是研究海绵礁与珊瑚礁古生态关系十分理想的场所，通过对慈利晚二叠世海绵礁及珊瑚礁内部造礁生物群落、沉积相特征，礁化演化序列及成岩作用特征等的分析和对比来研究它们之间的生态关系，发现其中的海绵礁为台地边缘礁，而珊瑚礁则应属于岸

PALEOECOLOGICAL RELATIONS BETWEEN CORAL REEF AND SPONGE REEF OF LATE PERMIAN IN CILI AREA, WEST HUNAN PROVINCE

Late Permian reefs are widely distributed in South China, but most of them belong to sponge reefs. However, Cili Late Permian reefs are composed of not only the sponge reef but also the best developed ancient coral reef found so far in the world. The sponge reef and the coral reef are distributed in the same line. So it is a good site for people to study the paleoecological relations between different kinds of reefs.The study shows that the sponge reef is a kind of marginal platform reef while the coral reef belongs to a kind of shore reef by comparing the reef building organism faunas,depositional facies, the evolution sequences of reef facies and the characteristics of diagenesis in the two different reefs.