Evolution of the Pristane/Phytane Ratio with Maturity of Lacustrine Source Rocks: Implications of a Thermal Simulation Experiment
文献类型：期刊论文
| 作者 | Cheng, Peng; Gai, Haifeng; Xiao, Xianming; Zhou, Linyuan; Zhao, Wei; Zhou, Qin; Tian, Hui |
| 刊名 | ACS EARTH AND SPACE CHEMISTRY
 |
| 出版日期 | 2023 |
| 卷号 | 7期号:5页码:1072-1082 |
| 关键词 | RIVER MOUTH BASIN CRUDE OILS ORGANIC-MATTER GEOCHEMICAL CHARACTERISTICS DEPOSITIONAL-ENVIRONMENTS BIOLOGICAL MARKERS CHINA PHYTANE PETROLEUM HYDROCARBONS |
| ISSN号 | 2472-3452 |
| DOI | 10.1021/acsearthspacechem.3c00011 |
| 英文摘要 | The pristane/phytane ratio (Pr/Ph) of source rocks has been extensively used for the identification of paleosedimentary environments and oil-source rock correlations. However, the influences of maturity on the Pr/ Ph ratio are not fully understood, which largely limits the applicability of this parameter under geological conditions. Based on a thermal simulation experiment performed on typical lacustrine source rock samples and systematic research on geological source rock samples, the evolution of the Pr/Ph ratio with increasing maturity was investigated in this study. The results indicate that the Pr/Ph ratios of the two source rock extracts progressively decrease with increasing maturity, and the decrease in this parameter is more significant for shallow lacustrine samples than for deep lacustrine samples. The Pr/Ph ratios of the two types of source rocks are different at the oil generation stage with EasyRo less than 1.02% but are similar at the oil cracking stage with EasyRo larger than 1.02%. The Pr and Ph of source rocks are contributed by both biogenic and thermal origins, which are largely determined by the sedimentary environment and maturity, respectively, and the contributions of the two origins are diverse at different maturity stages. The Pr/Ph ratio is mainly controlled by the sedimentary environment at the diagenetic stage, by both sedimentary and thermal maturity at the oil generation stage, and by thermal maturity at the oil cracking stage. The Pr/Ph ratio of source rocks can be used to identify sedimentary environments and oil-source rock correlations at diagenetic and oil generation stages. |
| WOS研究方向 | Chemistry, Multidisciplinary ; Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000984856000001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/80340]  |
| 专题 | 有机地球化学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Cheng, Peng,Gai, Haifeng,Xiao, Xianming,et al. Evolution of the Pristane/Phytane Ratio with Maturity of Lacustrine Source Rocks: Implications of a Thermal Simulation Experiment[J]. ACS EARTH AND SPACE CHEMISTRY,2023,7(5):1072-1082. |
| APA | Cheng, Peng.,Gai, Haifeng.,Xiao, Xianming.,Zhou, Linyuan.,Zhao, Wei.,...&Tian, Hui.(2023).Evolution of the Pristane/Phytane Ratio with Maturity of Lacustrine Source Rocks: Implications of a Thermal Simulation Experiment.ACS EARTH AND SPACE CHEMISTRY,7(5),1072-1082. |
| MLA | Cheng, Peng,et al."Evolution of the Pristane/Phytane Ratio with Maturity of Lacustrine Source Rocks: Implications of a Thermal Simulation Experiment".ACS EARTH AND SPACE CHEMISTRY 7.5(2023):1072-1082. |
入库方式： OAI收割
来源：广州地球化学研究所
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