华南寒武系年代地层系统的修订及相关问题REVISION ON CAMBRIAN CHRONOSTRATIGRAPHY OF SOUTH CHINA AND RELATED REMARKS
彭善池
摘要(Abstract)：
将早先提出的华南寒武系4统9阶的年代地层系统,修订成4统10阶,除王村阶的底界略高于全球鼓山阶(Drumian Stage)的底界外,其余界线都与目前的全球4统10阶的年代地层界线一致。新系统采纳了在我国华南建立的全球芙蓉统、排碧阶和古丈阶,在原桃源阶的上部另建"牛车河阶"。原王村阶和桃源阶的时限因这一修订有所缩减。全球鼓山阶的底界与台江阶上部的Ptychagnostus atavus带底界可以精确对比。滇东统包含晋宁阶和梅树村阶(狭义)两个年代地层单位,晋宁阶的底界采用全球寒武系的底界,梅树村阶的底界采用罗惠麟等1994年正式修订后的定义,即位于梅树村剖面的"B"点。梅树村阶的原始定义仅指梅树村剖面的磷块岩层(即现今的中谊村段),它的底界高于现在的以Tricophycus pedum首现定义的全球寒武系底界。
关键词(KeyWords)： 年代地层;修订;古丈阶;牛车河阶;梅树村阶;寒武系;华南
基金项目(Foundation): 中国科学院创新方向性项目(KZCX2-SW-129);; 国家自然科学基金(No40332018);; 科技部(2001DEA200020-2,G2000077702);; 中国石化股份有限公司中国海相地层研究项目联合资助
作者(Author): 彭善池
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