全球寒武系江山阶及其“金钉子”在我国正式确立JIANGSHANIAN STAGE(CAMBRIAN,FURONGIAN) AND THE GSSP FOR THE BASE OF THE STAGE ESTABLISHED FORMALLY
彭善池
摘要(Abstract)：
国际地质科学联合会执委会批准了由中、美、意科学家组成的研究团队提议建立寒武系江山阶全球标准层型剖面和点位("金钉子")的提案,以我国浙江江山县命名的全球寒武系年代地层单位江山阶及其底界的"金钉子"正式在我国确立。这是继寒武系排碧阶和古丈阶"金钉子"之后,在我国确立的又一个寒武系的"金钉子",也是继芙蓉统、排碧阶和古丈阶之后,又一个进入《国际地层表》的以我国地名命名的全球标准寒武系年代地层单位。江山阶底界的全球层型剖面为碓边B剖面,位于浙江省江山县碓边村附近,层型点位在华严寺组的上部,下距该组底界108.12 m,与球接子三叶虫Agnostotes orientalis在该剖面的首现层位一致,也与多节类三叶虫Irvingella an-gustilimbata的首现点位一致。
关键词(KeyWords)： 全球层型剖面和点位;Agnostotesorientalis首现;华严寺组;江山阶;寒武系;碓边;江山;浙江
基金项目(Foundation): 现代古生物学和地层学国家重点实验室资助项目(20091103);; 全国地层委员会资助
作者(Author): 彭善池
DOI: 10.19839/j.cnki.dcxzz.2011.04.007
参考文献(References)：
- 卢衍豪,林焕令.1980.浙西寒武-奥陶系的分界及所含三叶虫.古生物学报,19(2):118-135
- 卢衍豪,林焕令.1983.浙江西部寒武纪动物群的分布和对比.地质学报,57(4):317-328
- 卢衍豪,林焕令.1989.浙江西部寒武纪三叶虫动物群.中国古生物志,新乙种,第25号(总号第178册).北京:科学出版社.1-287
- 盛莘夫.1951.浙江省之地层.浙江地质,2:1-18
- Kobayashi T.1935.The Cambro Ordovician formations and faunasof South Chosen,Palaeontology,Part3,Cambrian faunas ofSouth Chosen with a special study on the Cambrian trilobitegenera and families.Journal ofthe Faculty of Science,Impe-rial University of Tokyo,Section II,4:49-344
- Kobayashi T.1938.Upper Cambrian fossils from British Columbiawith a discussion on the isolated occurrence of the so-called"Olenus"Beds of Mt Jubilee.Japanese Journal of Geology andGeography,15:149-192
- Lu Yan-hao&Lin Huan-ling.1980.Cambro-Ordovician boundaryin western Zhejiang and the trilobites contained therein.ActaPalaeontologica Sinica,19(2):118-134
- Lu Yan-hao&Lin Huan-ling.1983.Zonation and correlation ofCambrianfaunasin WZhejiang.Acta Geologica Sinica,57(4):317-328
- Lu Yan-hao&Lin Huan-ling.1989.The Cambrian trilobites ofwestern Zhejiang.Palaeontologia Sinica(New Series B),25:1-287
- Lu Yan-hao,Lin Huan-ling,Han Nai-ren,Li Luo-zhao&Ju Tian-yin.1984.On the Cambrian-Ordovician Boundary of the Jians-han-Changshan area,WZhejiang.In:Stratigraphy and Palaeon-tology of Systemic Boundaries in China.Cambrian-OrdovicianBoundary(1).Hefei:Anhui Science and Technology PublishingHouse.9-44
- Peng Shan-chi&Babcock L E.2005.Two Cambrian agnostoid tri-lobites,Agnostotes orientalis(Kobayashi,1935)andLotagnos-tus americanus(Billings,1860):key species for defining globalstages of the Cambrian System.Geosciences Journal,9(2):107-115
- Sheng Xing-fu.1951.Stratigraphy of Chekiang.Geology of Zhe-jiang,2:1-18