石炭系全球界线层型研究进展ACHIEVEMENTS IN THE ESTABLISHMENT OF THE CARBONIFEROUS GSSPs
王向东,金玉玕
摘要(Abstract)：
早石炭世晚期开始的全球大规模构造运动和冈瓦纳大陆的冰川,为石炭系的地层划分和对比带来了困难。通过国际石炭系分会的努力,近年来石炭系各阶的界线层型研究取得了显著的进展。维宪阶已有了古生物学界线定义,即有孔虫Eoparastaffella simplex的首现,其余各阶也有了意向性的界线定义,它们均以牙形刺作为主导化石类群。其中,谢尔普霍夫阶以L ochriea ziegleri的首现为底界;莫斯科阶以Idiognathoides postsulcatus或Declinognathodus donetzianus的首现为底界;卡西莫夫阶的底界为Idiognathodus sagittalis的首现层位;格舍尔阶的底界是Idiognathodus simulator的首现层位
关键词(KeyWords)： 石炭系;地层划分;全球界线层型和点位(GSSP);界线定义;牙形刺
基金项目(Foundation): 中国科学院创新方向项目 ( KZCX2 -SW12 9);; 国家自然科学基金 ( No.40 3 2 12 0 2、40 2 72 0 0 4);; 国家重点基础研究发展规划项目(G2 0 0 0 0 7770 0 )资助
作者(Author): 王向东,金玉玕
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