| 稳定氧碳同位素在碳酸盐岩成岩环境研究中的应用 |
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| 引用本文： | 陈荣坤.稳定氧碳同位素在碳酸盐岩成岩环境研究中的应用[J].沉积学报,1994,12(4):11-21. |
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| 作者姓名： | 陈荣坤 |
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| 作者单位： | 中国地质大学 |
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| 摘 要： | 笔者对湖北宜昌寒武系、奥陶系和鄂尔多斯布１井寒武系、任３井奥陶系的大量样品测试和研究结果表明大气淡水成岩环境中的δ１８Ｏ、δ１３Ｃ值均向较高负值漂移；正常和咸化海水成岩环境中δ１８Ｏ、δ１３Ｃ值均向高正值漂移；较深埋藏成岩δ１８Ｏ值向高负值漂移.且与埋深成反比，而δ１３Ｃ值相对较稳定或向低正值漂移。
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| 关 键 词： | 氧碳同位素 碳酸盐岩 成岩环境 漂移 |
| 收稿时间： | 1993-05-20 |
Application of Stable Oxygen and Carbon Isotope in the Research of Carbonate Disgenetic Environment |
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| Chen Rongkun.Application of Stable Oxygen and Carbon Isotope in the Research of Carbonate Disgenetic Environment[J].Acta Sedimentologica Sinica,1994,12(4):11-21. |
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| Authors: | Chen Rongkun |
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| Institution: | China University of Geosciences, Beijing |
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| Abstract: | It is a method which needs to be improved using the component of oxygen and carbon isotope to study and judge the diagenetic environment and the intensity of diagenesis. However, many lab data of samples and the analyzing results of Cambrian and Ordovician in Yichang area，Hu Bei Province;the 110. 3 Ren Well and the NO. 1 Bu Well in Ordos area proved that this method is very effective and practical. The research result indicates that the δ18O and δ13C values shift towards the higher negative values in meteoric diagenetic environment. The δ18O and δ13C values shift towards obviously higher positive values in marine diagenetic environment. The Z value which was calculated using δ18O and δ13C are all more than 122. In buried diagenetic environment, especially deeply buried environment, the 8'80 value shift towards relatively higher negative values. The more the depth, the lower the δ18O value. However, the δ13C value has not changed obviously in the process of burial. All the conclusion above are consistent with the achievement of foreign countries. There are many factors influencing the values of oxygen and carbon isotopes，and the procedures of the buried diagenesis are very complex. So the method metioned above is not absolute. It must be connected with the other research work of petrology and many lab methods. |
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| Keywords: | Oxygen and Carbon isotope meteoric diagenetic environment marine diagenetic environment buried diagenetic environment shift carbonate rock |
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