黔南石炭纪珊瑚礁与南海现代珊瑚礁的对比研究

On the Contrast Research Between Carboniferous Coral Reefs in Southern Guizhou and Modern Coral Reefs in South China Sea

根据沉积环境和珊瑚礁的特征,分别对两种礁体进行了沉积相带的划分和建造过程的对比研究.分析表明:扁平村珊瑚礁中充填了大量的蜓、海百合茎和腕足碎屑等附礁生物组分,而现在珊瑚礁中的充填物大都以珊瑚碎屑为主;两种礁体虽形成于不同的时代,但具有类似的沉积相带分布和礁体形成过程,这与礁群落的盛衰状况密不可分.与晚石炭世的四射珊瑚相比,现代六射珊瑚对环境的适应能力更强,现代珊瑚礁的形成过程也更加曲折.

Contrast between the carboniferous coral reefs in Southern Guizhou and modern coral reefs in South China Sea was done in view of their formation processes and division of sedimentary facies belts, based on the sedimentary environment and characteristics of coal reef. The results showed that a lot of inhabitants are filled in the coral reefs in Bianping village, such as Fusulinids, clum of encrinite and fragments of brachiopod, while the coral fragments are dominantly filled in the modern coral reefs. The fact reveals that although the two reefs are formed in different ages, they are similar in the distribution of sedimentary facies belts and reef formation process, which closely relates to the reef community＇ s status. Compared with the tetracoral in Late-Carboniferous, the modern hexacoral is more adaptive to environment, and the formation process of modern coral reefs is more labyrinthian.