【摘要】 贵州松桃县黄莲村西的黄莲剖面杷榔组厚417.8m,主要由深灰色钙质泥岩组成,岩性与湘西、黔东杷榔组基本相似,除底部38m未见三叶虫外,以上均含有三叶虫,由下而上可分为2个三叶虫带,下为Oryctocarella duyunensis带(38—83m),化石较少;上为Oryctocarella duyunensis-Arthricocephlus chauveaui组合带(83 m以上)。除Arthricocephlus chauveaui外,还含有A.xinzhaiheensis,Oryctocarella duyunensis,O.sibirica?,O.balangensis,Duyunaspis duyunensis,Changaspis elongata及Redlichia (Pteroredlichia)murakamii。与剑河交榜潜在的寒武系第四阶国际层型剖面下部2个三叶虫带Oryctocarella duyunensis-Arthricocephlus chauveaui组合带及Oryctocarella duyunensis带完全相同,也可和格陵兰北部Freachen land及Peary land等地Henson Gletscher组对比。黄莲剖面是潜在的寒武系第四阶国际层型剖面剑河交榜杷榔组剖面的良好辅助剖面。更多还原

【Abstract】 The Huanglian section located in the west of Huanglian village, Songtao County, Guizhou Province was the basic section for establishing the Nangaoan Stage and the Duyunian Stage by Peng Shanchi et al.in 2000.We restudy some materials collected from the Balang Formtion of the Huanglian section eighteen years ago.The Balang Formtion in Huanglian section consists of dark gray and grayish black silty mudstone. Its thickness is 417.8 m.The lithology of the Balang Formation in Huanglian is similar to that of the Balang Formation in east Guizhou and west Hunan.The trilobites are very abundant except the lower part from the base boundary to 38 mand two trilobite zones are defined according to the collected data:Oryctocarella duyunensis Zone,occupies lower part of the Balang Formation from38 m to 83 m above the base;Arthricocephlus chauveaui Zone,occupies middle-upper part of the Balang Formation from 83 mto the upper unit,the"Tsinghsutung Formation",including Arthricocephlus chauveaui, A. xinzhaiheensis,Oryctocarella duyunensis, O. sibirica?, O.balangensis,Duyunaspis duyunensis,Changaspis elongata and Redlichia(Pteroredlichia)murakamii.The trilobite biostratigraphy of the Balang Formation at the Huanglian section is exactly the same as that of the Balang Formation at the Jiaobang section which is the potential Global Standard Stratotype-section and Point(GSSP)for the base of the Cambrian Stage 4 and can correlate with the Henson Gletscher Formation in Freachen land and Peary land of North Greenland.The Huanglian section is a good supplementary section of the Jiaobang section for the Balang Formation.更多还原