贵州剑河寒武系黔东统杷榔组沉积环境及生物地层再研究——以剑河交榜剖面为例  

Restudy of Sedimentary and Biostratigraphy of the Qiandongian(Cambrian)Balang Formation at Jianhe,Guizhou,China——Example for Jiaobang Section of the Balang Formation

作　　者：闫巧洁 彭进[1] 赵元龙[1] 文荣琴 孙海静[1] 

机构地区：[1]贵州大学资源与环境工程学院,贵阳550025

出　　处：《地质论评》2014年第4期893-902,共10页Geological Review

基　　金：国家自然科学基金(编号41172005;41330101);国家973重点基础项目(编号2013CB835002);现代古生物及地层学国家重点实验室(中国科学院南京地质古生物研究所)基金(编号113111);贵州省省长基金(黔省专合字[2011]37号);贵州省国际科技合作重点项目(黔科合外G字2010[7001]);贵州大学引进人才基金(贵大人基金字:2010021);国家地层委员会和深圳仙湖植物园古生物博物馆基金联合资助

摘　　要：贵州剑河交榜剖面杷榔组顶底完整,三叶虫序列完整,产出掘头虫类三叶虫5属7种。其中Arthricocephalus chauveaui Bergeron,1899,Changaspis elongata Lee in Chien,1961,Arthricocephalites jishouensis(Zhou in Zhou et al.),1977,3个种也出现在北美格陵兰的Henson Glatsche组,提供了三叶虫全球对比的重要信息。其中A.chauveaui在交榜剖面杷榔组底部4 m首现,延伸至近顶部278 m。交榜剖面杷榔组岩石地层、生物地层和年代地层研究信息表明该剖面更适合作杷榔组岩石地层标准剖面,该剖面应是A.chauveaui首现点位定义的都匀阶界线层型剖面。可能是全球寒武系第4阶具有竟争潜力的界线层型剖面。The Balang Formation is exposed completely at Jiaobang section,Jianhe County,Guizhou Province,and contains abundant trilobites,including corynexochid 5 genera and 7 species,in addition,redlichid 1 genus and 3 species,and ptychoparild 1genus and 1 species yielded.Of which Arthricocephalus chauveaui Bergeron,1899,Changaspis elongata Lee in Chien,1961,Arthricocephalites jishouensis Zhou in Zhou et al.,1977 also occur in the lower Cambrian Henson Gletscher Formation of Greenland,which provides significant information for global correlation.A.chauveaui firstly appears at 4m above base the Balang Formation range to 278m of the upper part of the formation at Jiaobang section.New data from lithostratigraphy,biostratigraphy and chronostratigraphy of Jiaobang section of the Balang Formation indicate this section more suit to be as the standard sections of lithostratigraphy of the Balang Formation.It should be the standard stratotype section of boundary for constraining the base of Duyunian （Cambrian） defined by the FAD （First appearance datum） of A.chauveaui in Soth China.It may become a potential proposal stratotype section of boundary defined by the FAD of A.chauveaui for the global Cambrian Series 2 stage 4.

关 键 词：Arthricocephalus chauveaui 杷榔组 交榜剖面 寒武系 贵州 

分 类 号：P534.41[天文地球—古生物学与地层学] Q915.6[天文地球—地质学]