Oxygen Isotope Clue to Migration of Dolomitizing Fluid as Exampled by the Changxing Formation Dolomite at Panlongdong, Northeastern Sichuan
文献类型：期刊论文
| 作者 | Zhao, Rui1; Wu, Yasheng1; Jiang, Hongxia1; Liu, Qingsong3 |
| 刊名 | JOURNAL OF EARTH SCIENCE
 |
| 出版日期 | 2017-04-01 |
| 卷号 | 28期号:2页码:333-346 |
| 关键词 | Sichuan Basin Changxing Formation Dolomitization Oxygen Isotope Origin Migrating Direction |
| ISSN号 | 1674-487X |
| 文献子类 | Article |
| 英文摘要 | The Upper Permian Changxing dolomite reservoirs serves as one of the most important gas and oil reservoirs in the NE Sichuan Basin. Determining the dolomitizing fluid's pathway is regarded as the key to solve the "dolomite problem" and further petroleum exploration. Outcrop samples from Upper Permian Changhsingian Panlongdong Section were studied using oxygen isotopic analysis, cathodoluminescence (CL) and major element analysis, in an attempt to determine the migration path way and properties of the dolomitizing fluid. Of the Changxing dolomite, the delta O-18 values ranged from -3.494 parts per thousand to -5.481 parts per thousand, which decreased from the top layer to the bottom in the section; the MgO contents varied from 9.24% to 21.43%, CaO contents from 28.65% to 39.87%, the CaO/MgO ratio from 1.40 to 4.31 and the MnO contents from 0.004% to 0.009 8%. The MgO contents showed a downwardly decreasing trend in the section, while the CaO/MgO showed an opposite rule. All of the dolomites looked dull or dark when they were exposed to the electron beam of the cathodoluminescence device. None of the fine-to medium grained dolomite showed a banded structure. Given that dolomitizing fluid's salinity decreased during the dolomitization process in its pathway, we concluded that the dolomitizing fluid migrated downwardly in Changxing Formation after excluding the possibility of deep burial or meteoric-marine mixing-water influences. As the dolomitizing fluid's pathway has always been difficult to be determined in highly dolomitized Formation, this study showed an important application of oxygen isotope values in resolving this problem. |
| WOS关键词 | CANADA SEDIMENTARY BASIN ; GEOCHEMICAL CHARACTERISTICS ; PLATFORM DOLOMITES ; FRESH-WATER ; HYDROTHERMAL DOLOMITE ; ORDOVICIAN CARBONATES ; FEIXIANGUAN FORMATION ; PRESQUILE BARRIER ; JIANGXI PROVINCE ; EASTERN SICHUAN |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000398653100012 |
| 出版者 | CHINA UNIV GEOSCIENCES, BEIJING |
| 资助机构 | National Natural Science Foundation of China(40472015 ; State Key Laboratory of Oil/Gas Reservoir Geology and Exploitation at CDUT(PL200801) ; 40802001 ; 41372121) ; National Natural Science Foundation of China(40472015 ; State Key Laboratory of Oil/Gas Reservoir Geology and Exploitation at CDUT(PL200801) ; 40802001 ; 41372121) ; National Natural Science Foundation of China(40472015 ; State Key Laboratory of Oil/Gas Reservoir Geology and Exploitation at CDUT(PL200801) ; 40802001 ; 41372121) ; National Natural Science Foundation of China(40472015 ; State Key Laboratory of Oil/Gas Reservoir Geology and Exploitation at CDUT(PL200801) ; 40802001 ; 41372121) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/52976]  |
| 专题 | 地质与地球物理研究所_中国科学院油气资源研究重点实验室 |
| 通讯作者 | Wu, Yasheng |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Univ Geosci, Sch Energy Resources, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Rui,Wu, Yasheng,Jiang, Hongxia,et al. Oxygen Isotope Clue to Migration of Dolomitizing Fluid as Exampled by the Changxing Formation Dolomite at Panlongdong, Northeastern Sichuan[J]. JOURNAL OF EARTH SCIENCE,2017,28(2):333-346. |
| APA | Zhao, Rui,Wu, Yasheng,Jiang, Hongxia,&Liu, Qingsong.(2017).Oxygen Isotope Clue to Migration of Dolomitizing Fluid as Exampled by the Changxing Formation Dolomite at Panlongdong, Northeastern Sichuan.JOURNAL OF EARTH SCIENCE,28(2),333-346. |
| MLA | Zhao, Rui,et al."Oxygen Isotope Clue to Migration of Dolomitizing Fluid as Exampled by the Changxing Formation Dolomite at Panlongdong, Northeastern Sichuan".JOURNAL OF EARTH SCIENCE 28.2(2017):333-346. |
入库方式： OAI收割
来源：地质与地球物理研究所
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