| 燕山地区新元古界龙山组微体化石新材料 |
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| 引用本文： | 刘欢,朱士兴,田辉,张健.燕山地区新元古界龙山组微体化石新材料[J].世界地质,2017,36(1):1-14. |
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| 作者姓名： | 刘欢 朱士兴 田辉 张健 |
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| 作者单位： | 中国地质调查局天津地质调查中心, 天津 300170 |
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| 摘 要： | 对采自燕山地区新元古界龙山组泥页岩进行化学浸解和筛析,获得大量微体化石,主要包括:Leiosphaeridia,Trachysphaeridium,Satka,Favososphaeridium,Tanarium,Siphonophycus,Oscillatoriopsis,Laminarites等。化石组合特征为:(1)以单球类-复球类化石分子为主,纹饰复杂;(2)小型具刺疑源类化石大量出现;(3)多细胞生物占有一定的数量。新的化石资料进一步丰富了龙山组微体化石的内容,也为区域地层对比提供了新的古生物依据。
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| 关 键 词： | 新元古界 龙山组 微体化石 燕山地区 具刺疑源类 |
| 收稿时间： | 2016-06-20 |
| 修稿时间： | 2016-12-21 |
New data of microfossils from Neoproterozoic Longshan Formation in Yanshan region |
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| LIU Huan,ZHU Shi-xing,TIAN Hui,ZHANG Jian.New data of microfossils from Neoproterozoic Longshan Formation in Yanshan region[J].World Geology,2017,36(1):1-14. |
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| Authors: | LIU Huan ZHU Shi-xing TIAN Hui ZHANG Jian |
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| Institution: | Tianjin Center of Geological Survey, China Geological Survey, Tianjin 300170, China |
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| Abstract: | On the basis of chemical soaking and sieving analysis, a large number of microfossils were found from the mudstones and shales of Neoproterozoic Longshan Formaton in Yanshan region, comprising of Leiosphaeridia, Trachysphaeridium, Satka, Favososphaeridium, Tanarium, Siphonophycus, Oscillatoriopsis, Laminarites and so on. The fossil assemblage is characterized by:(1) dominance of monosphaeritae and polysphaeritae, with complex sculptures; (2) occurrence of a lot of small sized acanthophorous acritarchs; (3) existence of metaphytes. The new material enriches the microfossil assemblage of the Longshan Formaiton, and provides more evidence for regional stratigraphic correlation. |
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| Keywords: | Neoproterozoic Longshan Formation microfossil Yanshan region acanthophorous acritarch |
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