邓义楠,王约,陈洪德,侯明才,朱江,赵明胜

• 1:贵州大学资源与环境工程学院
• 2:成都理工大学沉积地质研究院

摘要(Abstract)：

黔北桐梓红花园地区的五峰组是华南地区奥陶系的重要剖面之一,在其以泥质灰岩为特征的五峰组观音桥段下部黑色含炭质钙质页岩和褐色粉砂岩中分别产有较为丰富的双壳类Modiolopsis和腹足类Holopea。产双壳和腹足类的地层中岩性和生物具有差异性,表明观音桥段沉积早期的沉积环境具有多变的特征。横长卵形、较膨凸的Modiolopsis和其两瓣壳相连保存的标本表明为近原地埋藏,为弱水动力、有氧的、较浅水环境的软质基底。丰度较大的低圆锥形Holopea的不规则的壳顶指向指示了具一定水动力的、沙性基底的浅水环境。

关键词(KeyWords)： 双壳类;腹足类;五峰组观音桥段;桐梓;贵州

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金重点项目(No.40739901);; 贵州省省长基金联合资助的成果

作者(Author): 邓义楠,王约,陈洪德,侯明才,朱江,赵明胜

DOI: 10.19839/j.cnki.dcxzz.2010.03.014

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