| 贵州瓮安陡山沱组磷块岩中疑源类化石壳壁超微结构 |
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| 引用本文： | 陈多福,陈先沛. 贵州瓮安陡山沱组磷块岩中疑源类化石壳壁超微结构[J]. 微体古生物学报, 2004, 21(1): 32-36 |
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| 作者姓名： | 陈多福 陈先沛 |
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| 作者单位： | 中国科学院广州地球化学研究所边缘海地质实验室,广州,510640 |
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| 基金项目： | 本文得到了中国科学院广州地球化学研究所知识创新重要领域项目的资助(GIGCX-03-04). |
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| 摘 要： | 未经化学处理的原始岩石样品的扫描电镜观察，确定了瓮安陡山沱组型刺饰疑源类Meghystri chospaeridium chadianensis的微结构特征。磷酸盐化疑源类化石由表面棘刺和球体组成，球体分为壳壁和腔体二部分。球体壳壁具黑色外层和白色内层的多层结构。棘刺具有与球体相似的多层状的壳壁和腔体。首次发现了发育于球体表面和体壳壁内部的网格超微结构。球体的腔体内存在的残余有机质。
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| 关 键 词： | 贵州 磷酸盐化疑源类化石 表面棘刺 球体 网格 超微结构 原始岩石样品 |
| 修稿时间： | 2003-03-06 |
Wall Ultrastructure of an Phosphatized Acritarch from Doushantuo Phosphorite in the Weng'an Area, Guizhou, South China |
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| CHEN Duo-fu and CHEN Xian-pei. Wall Ultrastructure of an Phosphatized Acritarch from Doushantuo Phosphorite in the Weng'an Area, Guizhou, South China[J]. Acta Micropalaeontologica Sinica, 2004, 21(1): 32-36 |
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| Authors: | CHEN Duo-fu and CHEN Xian-pei |
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| Abstract: | The SEM images of an acritarch fossil from untreated original rock of the Doushantuo phosphorite in the Weng'an area show that the studied phosphatized acritarch is Meghystrichosphaeridium chadianensis. It consists of vesicle with surface processes. The vesicle has external wall and internal body. The vesicle wall has multi-layered structure consisting of outer-dark and inner-white layers. The surface processes has vesicle-like structure and consists of multi-layered wall and internal body. There occurred net-like ultra-microstructure within the vesicle wall and on the vesicle surface. Some residual organic matter is still preserved in the vesicle internal body. |
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| Keywords: | acritarch vesicle wall structure net-like ultra-microstructure Neoproterozoic Doushantuo Formation Weng'an phosphorite Guizhou |
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