[关键词]
[摘要]
贵州省独山县县城附近的泥盆纪浅海相地层发育良好,底栖生物化石丰富,研究历史悠久,是我国南方浅海相泥盆系的标准剖面之一。文章从珊瑚化石的角度进行生物地层和群落生态的分析,并建立独山中、晚泥盆世7个珊瑚组合。文章最后还着重阐述独山泥盆纪珊瑚的4次灭绝事件:1)mid-Eifelian event(发生在龙洞水段之顶);2)late-Givetian event(发生在鸡窝寨段之顶);3)F-Fevent(发生在靠近尧梭组之底);4)D-Cevent(发生在革老河组之顶)。其中,F-F大灭绝事件对珊瑚群的影响最大。
[Key word]
[Abstract]
The shallow marine Devonian is well developed in Dushan, southern Guizhou and rich in fossil corals. The Devonian corals in Dushan flourished in a nearshore shallow water environment and all coral communities fall in the range of BA3 and BA4 (equivalent to the upper part of subtidal) in the Pedder and McLean's benthic assemblage scale.
[中图分类号]
Q915.813.3 Q913.6
[基金项目]
国家重点基础研究发展规划项目(G2 0 0 0 0 7770 0 ),国家自然科学基金(No .40 2 72 0 0 5),南京地质古生物研究所现代古生物学和地层学国家重点实验室资助课题,贵州省科学技术基金项目资助课题