湖北宜昌樟村坪埃迪卡拉系陡山沱组硅磷质结核中的微体化石
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Microfossil assemblage from chert of the Ediacaran Doushantuo Formation in Zhangcunping, Yangtze Gorges, South China
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    摘要:

    本文报道的微体化石产于湖北宜昌樟村坪万家沟剖面埃迪卡拉纪陡山沱组第10层的硅磷质结核中,化石组合包括疑源类Appendisphaera grandis,Ericiasphaera spjeldnaesii,Knollisphaeridium maximum,Leiosphaena tenuissima,Meghystrichosphaeridium perfectum,Tianzhushania polysiphonia,T. spinosa,T. ornata;丝状蓝藻Oscillatoriopsis obtusa,Polytrichoides induviatus,P. lineatus,Salome hubeiensis,Siphonophycus typicum;多细胞藻类Sarcinophycus palilloformis,Wengania minuta。该微体化石组合面貌与黄陵背斜东、南翼陡山沱组二段硅质结核中以大型具刺疑源类Tianzhushania为特征的组合相同,与贵州瓮安地区陡山沱组上磷块岩下部保存的微体化石组合面貌基本一致。

    Abstract:

    The Ediacaran is characterized by diversification of many groups in microfossils record, including filamentous cyanobacteria, multicellular algae and acritarchs. A new microfossils assemblage from the Ediacaran Doushantuo Formation at Zhangcunping, northern Yichang, China, includes filamentous cyanobacteria (Oscillatoriopsis, Polytrichoides, Salome,Siphonophycus), multicellular algae (Sarcinophycus, Wengania) and acritarchs (Appendisphaera, Ericiasphaera, Knollisphaeridium, Leiosphaena, Meghystrichosphaeridium and Tianzhushania) . Acritrachs are found at the first time in the chert nodules in this region. The new microfossil assemblage is similar to that from the member II of the Doushantuo Formation in the East Yangtze Gorges area and the upper phosphorites in Weng’an, central Guizhou.

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陈寿铭,尹崇玉,刘鹏举,高林志,唐烽,王自强.2010.湖北宜昌樟村坪埃迪卡拉系陡山沱组硅磷质结核中的微体化石[J].地质学报,84(1):70-77.
Chen Shouming, Yin Chongyu, Liu Pengju, Gao Linzhi, Tang Feng, Wang Ziqiang.2010. Microfossil assemblage from chert of the Ediacaran Doushantuo Formation in Zhangcunping, Yangtze Gorges, South China[J]. Acta Geologica Sinica,84(1):70-77.

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  • 收稿日期:2009-07-20
  • 最后修改日期:2009-11-10
  • 录用日期:2009-11-10
  • 在线发布日期: 2010-01-08
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