Microbial precipitation of calcium carbonate has played a major role in formation of carbonate platforms since the Archean. Also, microbial carbonates and biologically induced ce-ment are important contributors to ree...Microbial precipitation of calcium carbonate has played a major role in formation of carbonate platforms since the Archean. Also, microbial carbonates and biologically induced ce-ment are important contributors to reef framework volume and rigidity in carbonate platform systems during times of significant environmental change including transgressive events in plat-form environments and the recovery interval following the major biotic crisis. The stratigraphic distribution of different types of microbial carbonates appears to vary within the sequence strati-graphic framework. Reefs and mounds within the Late Devonian carbonate platforms in Guilin, South China are formed primarily by calcimicrobes and biologically induced cement, representing the microbe-dominated and characteristic carbonate buildups within a reefal ecosystem that nearly all reef-building metazoans were absent after the Frasnian/Famennian biotic crisis. Mi-crobial community and microbialite seem to be linked with specific palaeoenvironment and pa-laeoclimate, suggesting that they could be used as indicators of environmental change and biotic events.展开更多
基金supported by the Hundred Talents Program of Chinese Academy of Sciencesthe University of Queensland(IPRS and UQIPRS),Australia.
文摘Microbial precipitation of calcium carbonate has played a major role in formation of carbonate platforms since the Archean. Also, microbial carbonates and biologically induced ce-ment are important contributors to reef framework volume and rigidity in carbonate platform systems during times of significant environmental change including transgressive events in plat-form environments and the recovery interval following the major biotic crisis. The stratigraphic distribution of different types of microbial carbonates appears to vary within the sequence strati-graphic framework. Reefs and mounds within the Late Devonian carbonate platforms in Guilin, South China are formed primarily by calcimicrobes and biologically induced cement, representing the microbe-dominated and characteristic carbonate buildups within a reefal ecosystem that nearly all reef-building metazoans were absent after the Frasnian/Famennian biotic crisis. Mi-crobial community and microbialite seem to be linked with specific palaeoenvironment and pa-laeoclimate, suggesting that they could be used as indicators of environmental change and biotic events.
