Main features of the Carboniferous organic reefs in the world
The Carboniferous reef hosts a special position in the Late Paleozoic organic reef evolution. The Carboniferous is a key period of the Phanerozoic reef evolution. There are mainly six common types of the Carboniferous organic reefs: (1) phylloid algal mounds,(2) stromatolic mounds,(3) coral reefs,(4) Waulsortian mud-mounds,(5) Chaetetes mounds,(6) microbial-algal mounds. The Carboniferous organic reefs are characterized by the relative simple reef facies texture, reef-building communities and reef building process.This indicates that the development of the Carboniferous organic reefs is influenced by the extinction event. The algal reefs are dominant in the Pennsylvanian, while the metazoan framework reefs develop well in China, especially large-scale Fomitchevella coral reef, which constitutes a bright spot in the development of the Carboniferous reefs. From the development of the Carboniferous reefs, the metazoan framework reefs and the reefs dominated by microbes and calcareous algae may be two parallelling evolution reef ecosystems, The development of the metazoan framework reefs after the extinction event reflects an obvious evolutionary lag time. The recovery of the reef-building communities dominated by microbes and calcareous algae became faster after the extinction event. According to the palaeogeographic distribution of the Carboniferous organic reefs, the Carboniferous organic reefs are mainly distributed in the range of 30 degrees north to 30 degrees south. Thus, it represents the Carboniferous organic reefs grow in the relative warm climate conditions and is similar to the distribution of modern coral reefs.
国家科技期刊平台
NSTL
万方数据
维普
