| 上杨子区奥陶纪桐梓期的白云岩成因 |
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| 引用本文： | 梅冥相.上杨子区奥陶纪桐梓期的白云岩成因[J].贵州工业大学学报(自然科学版),1989,18(1):34-39. |
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| 作者姓名： | 梅冥相 |
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| 作者单位： | 贵州工学院地质系 研究生 |
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| 摘 要： | 根据古生物及沉积岩石学特征的研究,发现桐梓期的白云岩主要产于开阔海台地相、半开阔海台地相及半局限海台地相中。并具有从东向西由开阔海台石化地相到局限海台地相白云岩含量增多的特征。由此特点,再考虑白云作用的机制,笔者认为桐梓期白云岩多为水混合白云石化作用的产物。
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| 关 键 词： | 桐梓期白云岩成因 |
Genesis of Dolomites in Tongzi Period of Ordovician in Upper Yangzi Region |
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| Mei Mingxiang.Genesis of Dolomites in Tongzi Period of Ordovician in Upper Yangzi Region[J].Journal of Guizhou University of Technology(Natural Science Edition),1989,18(1):34-39. |
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| Authors: | Mei Mingxiang |
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| Institution: | Graduate Student in Geology |
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| Abstract: | Based on the studying of paleobiology and sedimentary rocks,it is found that the dolomites of the Tongzi period scatter in the open-platform facies,semiopen-platform facies and restrict -platform facies.From open-platform to restrict-platform facies,the contents of dolomites increase gradually.Considering this and the mechanism of dolomitiation,the writer decides that these dolomites are formed by the dolomitization in the mixed zone of fresh and sea waters. |
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| Keywords: | Tongzi period genesis of dolomite |
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