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| 湖南晚二叠世生物礁成岩作用的碳,氧同位素研究 | |
| 引用本文： | 姜月华,柳祖汉.湖南晚二叠世生物礁成岩作用的碳,氧同位素研究[J].地质论评,2000,46(2):190-196. |
| 作者姓名： | 姜月华 柳祖汉 |
| 作者单位： | 1. 中国地质调查局南京地质调查中心,210016 2. 湘潭矿业学院,411201 3. 杭州石油地质研究所,310023 |
| 基金项目： | 科技部专项基金，85102140204， |
| 摘 要： | 本文通过对湖南晚二叠世生物礁中的有关胶结物及岩石的碳、氧稳定同位素研究，并结合薄片观察、探针成分分析、包裹体测温等，探讨了该地区生物礁成岩作用中的有关成岩特征。研究认为：①湖南晚二叠世生物礁中胶结物从早期到晚期δ＾１３Ｃ和δ＾１８Ｏ值总体上均有变轻的趋势，反映了礁体为一连续埋藏的成岩过程；②生物礁中所见白云石化现象主要属埋藏压实成因，礁休基本未受早期淡水或混合水影响；③礁中粗晶方解石胶结物形成于深 |
| 关 键 词： | 成岩作用 生物礁 稳定同位素 晚二叠世 |
An Application of Carbon and Oxygen Isotopes to Late Permian Reef Diagenesis in Hunan Province |
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| Jiang Yuehu,Yue Wenzhe,Liu Zuhan,Yang Mengd,Jin Shanyu,Wu Jinyun.An Application of Carbon and Oxygen Isotopes to Late Permian Reef Diagenesis in Hunan Province[J].Geological Review,2000,46(2):190-196. | |
| Authors: | Jiang Yuehu Yue Wenzhe Liu Zuhan Yang Mengd Jin Shanyu Wu Jinyun |
| Abstract: | Based on the study of carbon and oxygen stable isotopes of the related cements and rocks in the Late Permian reef of Hunan Province, and combining the observation of thin sections, electron-probe analysis, and enclave thermometry, the relative diagenetic characteristics of reef dia-genesis in the studied area are discussed. The authors consider that: (1) the C and O stable isotopes values of cements from the early to late stages in the Late Permian reef of Hunan Province tend to become smaller on the whole, suggesting that the reefs have a continuously buried diagenetic history; (2) the dolomitization seen in the reefs mainly results from burial compaction, and the reefs are not influenced by the early fresh or mixed water; (3) the calcite cements of the coarse-giant crystals were formed during the deep-buried period, but there are obvious differences in the degree of deep burial between the southern and the western Hunan reefs. |
| Keywords: | diagenesis reef carbon and oxygen stable isotopes Late Permian Hunan Province |
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