尹崇玉

• 1:中国地质科学院地质研究所 北京100037

摘要(Abstract)：

首次报道贵州瓮安震旦系陡山沱组磷块岩中发现大型具刺疑源类 Papillomembrana compta。对震旦纪陡山沱期已发现的特色硅化或磷酸盐矿化大型具刺疑源类组合及国内外地层对比进行综合评述 ,结合同位素测年、化学地层和其他有关资料综合分析 ,对陡山沱组的年代问题进行探讨。现有研究资料表明 ,陡山沱组含大型具刺疑源类组合的层位应低于俄罗斯北部、澳大利亚、乌克兰、西伯利亚北部及加拿大纽芬兰等地发现多种典型伊迪卡拉期生物群的层位 ,年代应早于以伊迪卡拉期生物群爆发为标志的早期后生动物多样化的时段。

关键词(KeyWords)： Pap illomembrana compta;疑源类;陡山沱期;震旦纪;地层对比;贵州

Abstract:

Keywords:

基金项目(Foundation): 科学技术部“九五”专项 ( 95 -专 -0 1-3-3;G99-A-0 5 a) ;; 国家自然科学基金 ( No.49872 0 0 2 );; 国家重点基础研究发 展规划项目 ( G2 0 0 0 0 0 7770 0 )资助

作者(Author): 尹崇玉

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