| 新疆震旦纪痕迹化石Planolites,Chondrites的发现及其意义 |
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| 引用本文： | 吴贤涛,李永安.新疆震旦纪痕迹化石Planolites,Chondrites的发现及其意义[J].地质科学,1987,0(3):239-245. |
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| 作者姓名： | 吴贤涛 李永安 |
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| 作者单位： | 1. 焦作矿业学院;2. 新疆地质局科研所 |
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| 摘 要： | 新疆震旦纪痕迹化石的存在及其形态特征,反映那里最早的水平潜穴,在震旦纪冰期前即已存在,但痕迹细小,且相互交切,绝不分叉。之后始出现分叉现象,并向枝形潜穴方向演变。
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| 关 键 词： | 后生动物 阿克苏-乌什 巷形穴 造迹生物 冰川沉积 |
| 收稿时间： | 1984-07-01 |
| 修稿时间： | 1984-07-01; |
THE DISCOVERY AND SIGNIFICANCE OF TRACE FOSSILS FROM SINIAN MARINE SEDIMENTS IN XINJIANG |
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| Wu Xiantao.THE DISCOVERY AND SIGNIFICANCE OF TRACE FOSSILS FROM SINIAN MARINE SEDIMENTS IN XINJIANG[J].Chinese Journal of Geology,1987,0(3):239-245. |
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| Authors: | Wu Xiantao |
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| Institution: | 1. Research Center of Ichnology, Jiaozuo Mining College, Jiaozuo;2. Geological Institute, Xinjiang Geological Bureau, Ulumuqi |
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| Abstract: | Two forms of significant trace fossils have been found in sinian marine sedimentary rocks of Aksu-Wushi region, Xinjiang. One is Planolites which is characterized by simple horizontal tunnel trace. Another form which is identified as Chondrites as the distinctive branched lebens-spuren can be clearly recognized in the specimen.The simple horizontal burrows of Planolites preserved in a bed below the Sinian glacial deposits are really rare and may imply that early metazoan had left their active traces in Xinjiang as early as 700 Ma. ago. It is also suggested in this paper that the Planolites tracemakers could gradually change their simple horizontal burrows into relatively complex branched Chondrites after a long period of evolution though the tentative suggestion needs much more study in the future work. |
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| Keywords: | Metazoan Aksu-Wushi tunnel trace tracemaker glacial deposits |
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