Nature and evolution of diagenetic fluids in the deeply buried Cambrian Xiaoerbulake Formation, Tarim Basin, China
文献类型：期刊论文
| 作者 | Wei, T. Y.3,4,5; Cai, C. F.3,4,5; Hu, Y. J.1; Yu, H. Y.5; Liu, D. W.2; Jiang, Z. W.3,4,5; Wang, D. W.5,6 |
| 刊名 | AUSTRALIAN JOURNAL OF EARTH SCIENCES
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| 出版日期 | 2022-09-16 |
| 页码 | 19 |
| 关键词 | Tarim Basin Lower Cambrian Xiaoerbulake Formation microbialite dolostone deep-burial reservoirs diagenetic fluid thermochemical sulfate reduction porosity rare earth element |
| ISSN号 | 0812-0099 |
| DOI | 10.1080/08120099.2022.2122080 |
| 英文摘要 | Significant amounts of petroleum are found in the deeply buried Cambrian Xiaoerbulake Formation in the Tarim Basin. However, limited understanding of origin of diagenetic fluids hampers petroleum exploration. In this study, petrological and high-resolution geochemical methods have been performed to understand the origin and evolution of diagenetic fluids, and their effects on the formation of dolostone reservoir. The Xiaoerbulake Formation is characterised by microbialites. The matrix is characterised by modern seawater-like rare earth element and yttrium (REY) patterns and delta O-18 values of -6.02 +/- 2.11 parts per thousand Vienna Pee Dee Belemnite (VPDB). Fine-crystalline dolomite cements have similar delta C-13 values and heavy rare earth element enrichment patterns to that of matrix dolomite, yet with lower delta O-18 values of -7.47 +/- 1.2 parts per thousand VPDB. In the deep-burial regimes, medium- to coarse-crystalline dolomite cements and saddle dolomites were precipitated at temperatures of 90-120 and 130-190 degrees C, respectively, lower delta O-18 values, distinct middle rare earth element enrichment, and high Fe and Mn contents compared with matrix and fine-crystalline dolomite cements. These imply thermochemical reduction of Fe- or Mn-rich oxides and/or hydrothermal fluids. Compared with other types of dolomite cements, calcite cements are characterised by low delta C-13 values (as low as -6 parts per thousand VPDB), light rare earth elements enrichment and significantly elevated Y/Ho ratios (86 +/- 59.3), likely related to the oxidation of organic matter during thermochemical sulfate reduction (TSR). Consequently, diagenetic fluid may have evolved from: Cambrian seawater, meteoric water, shallow-buried seawater-dominated pore water, medium-deep-buried ferrous-rich pore water, lately high-salinity hydrothermal fluid-dominated pore water and finally to acidic fluids related to TSR dissolution. Reservoir quality is enhanced by hydrothermal pulses and TSR in deep-burial settings. This study is significant for those concerned with the formation of deep-buried carbonate reservoirs. |
| WOS关键词 | THERMOCHEMICAL SULFATE REDUCTION ; RARE-EARTH-ELEMENTS ; CARBONATE RESERVOIR ; LOWER ORDOVICIAN ; SICHUAN BASIN ; NW CHINA ; HYDROTHERMAL ALTERATION ; DOLOMITE RESERVOIR ; MARINE CARBONATES ; TAZHONG AREA |
| 资助项目 | National Natural Science Foundation of China[41730424] ; National Natural Science Foundation of China[41961144023] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000857799800001 |
| 出版者 | TAYLOR & FRANCIS LTD |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/108358]  |
| 专题 | 地质与地球物理研究所_中国科学院新生代地质与环境重点实验室 |
| 通讯作者 | Cai, C. F.; Hu, Y. J. |
| 作者单位 | 1.Sinopec Int Explorat & Prod Corp, Beijing, Peoples R China 2.SINOPEC, Petr Explorat & Prod Res Inst, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China 4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Key Lab Explorat, Beijing, Peoples R China 5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing, Peoples R China 6.China Univ Geosci Beijing, Sch Energy Resources, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wei, T. Y.,Cai, C. F.,Hu, Y. J.,et al. Nature and evolution of diagenetic fluids in the deeply buried Cambrian Xiaoerbulake Formation, Tarim Basin, China[J]. AUSTRALIAN JOURNAL OF EARTH SCIENCES,2022:19. |
| APA | Wei, T. Y..,Cai, C. F..,Hu, Y. J..,Yu, H. Y..,Liu, D. W..,...&Wang, D. W..(2022).Nature and evolution of diagenetic fluids in the deeply buried Cambrian Xiaoerbulake Formation, Tarim Basin, China.AUSTRALIAN JOURNAL OF EARTH SCIENCES,19. |
| MLA | Wei, T. Y.,et al."Nature and evolution of diagenetic fluids in the deeply buried Cambrian Xiaoerbulake Formation, Tarim Basin, China".AUSTRALIAN JOURNAL OF EARTH SCIENCES (2022):19. |
入库方式： OAI收割
来源：地质与地球物理研究所
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