冬瓜山铜矿是长江中下游成矿带铜陵矿集区的一个大型铜矿床(安徽省地质矿产局,1987)。冬瓜山矿床主要分为两种类型,一种为层状矽卡岩型,一种为斑岩型,前人对层状矽卡岩型层状矿体进行了广泛的研究(常印佛等,1991;唐永成等,1998;Pan et a...冬瓜山铜矿是长江中下游成矿带铜陵矿集区的一个大型铜矿床(安徽省地质矿产局,1987)。冬瓜山矿床主要分为两种类型,一种为层状矽卡岩型,一种为斑岩型,前人对层状矽卡岩型层状矿体进行了广泛的研究(常印佛等,1991;唐永成等,1998;Pan et al.,1999;姜章平等,2001;曾普胜等,2002;杨竹森等,2002;王训诚等,2002;肖新建等,2002;凌其聪,2002;储国政,2003;徐九华等,2004;李进文,2004;杨竹森,2004;徐兆文等,2005;李红阳等2006;邱士东,2007;展开更多
Calcimicrobialites, which could be correlated to the layer 27 in Meishan section according to the Hindeodus parvus, occur abruptly on the end-Permian mass extinction boundary in South China. Microbialites mainly distr...Calcimicrobialites, which could be correlated to the layer 27 in Meishan section according to the Hindeodus parvus, occur abruptly on the end-Permian mass extinction boundary in South China. Microbialites mainly distribute on the top of reef facies or shallow carbonate platforms, thin- ning into deep facies. All the microbialites discovered are composed of micrite and coarse crystal digitate carbonate or patch carbonate. Microfossils usually dominate in the micro- bialites, and small gastropods, bivalves and ostracodes can also be found. This fossil assemblage represents a simple but particular remanent biota after the end-Permian mass ex- tinction on the top of reefs or shallow carbonate platforms. Abrupt occurrence of microbialites above the mass extinction boundary is the ecological response to the end-Permian global event in reef or shallow carbonate facies. Many studies have been done on the Permian-Triassic boundary and event in deep water facies sections or middle to lower shelf facies sections. However, the calcimicrobialites in South China are mainly located above reef facies or shallow carbonate plat- form facies. It will surely be helpful for people to know more about the different responses in different depths of ancient marine environment during the transition between Permian and Triassic by the study of petrology, palaeontology and palaeoecology of the calcimicrobialites.展开更多
文摘冬瓜山铜矿是长江中下游成矿带铜陵矿集区的一个大型铜矿床(安徽省地质矿产局,1987)。冬瓜山矿床主要分为两种类型,一种为层状矽卡岩型,一种为斑岩型,前人对层状矽卡岩型层状矿体进行了广泛的研究(常印佛等,1991;唐永成等,1998;Pan et al.,1999;姜章平等,2001;曾普胜等,2002;杨竹森等,2002;王训诚等,2002;肖新建等,2002;凌其聪,2002;储国政,2003;徐九华等,2004;李进文,2004;杨竹森,2004;徐兆文等,2005;李红阳等2006;邱士东,2007;
基金the National Natural Science Foundation of China(Grant Nos.40232025 and 40325004).
文摘Calcimicrobialites, which could be correlated to the layer 27 in Meishan section according to the Hindeodus parvus, occur abruptly on the end-Permian mass extinction boundary in South China. Microbialites mainly distribute on the top of reef facies or shallow carbonate platforms, thin- ning into deep facies. All the microbialites discovered are composed of micrite and coarse crystal digitate carbonate or patch carbonate. Microfossils usually dominate in the micro- bialites, and small gastropods, bivalves and ostracodes can also be found. This fossil assemblage represents a simple but particular remanent biota after the end-Permian mass ex- tinction on the top of reefs or shallow carbonate platforms. Abrupt occurrence of microbialites above the mass extinction boundary is the ecological response to the end-Permian global event in reef or shallow carbonate facies. Many studies have been done on the Permian-Triassic boundary and event in deep water facies sections or middle to lower shelf facies sections. However, the calcimicrobialites in South China are mainly located above reef facies or shallow carbonate plat- form facies. It will surely be helpful for people to know more about the different responses in different depths of ancient marine environment during the transition between Permian and Triassic by the study of petrology, palaeontology and palaeoecology of the calcimicrobialites.
