Molecular and carbon isotopic evidence for the possible origin of 13 α ( n-alkyl)-tricyclic terpanes in Mesoproterozoic bitumens from the Yanliao Rift, North China
文献类型：期刊论文
| 作者 | Zhang, Tao1,2,3,6; Peng, Ping'an2,3,5; Li, Yongfei1,6; Sun, Shouliang1,6; Guo, Huijuan5; Pang, Haiming4 |
| 刊名 | ORGANIC GEOCHEMISTRY
 |
| 出版日期 | 2024-04-01 |
| 卷号 | 190页码:11 |
| 关键词 | Biomarkers Black shale Compound specific stable carbon isotopes Mesoproterozoic 13 alpha( n -alkyl)-tricyclic terpanes |
| ISSN号 | 0146-6380 |
| DOI | 10.1016/j.orggeochem.2024.104766 |
| 英文摘要 | The Mesoproterozoic Jixian System in the Yanliao Rift of the North China Craton contains organic-rich shales within the Hongshuizhuang, Tieling, and Xiamaling formations. The biomarker composition of these formations is characterized by the dominance of 13 alpha( n -alkyl)-tricyclic terpanes. The distinctive structure and main occurrence of 13 alpha( n -alkyl)-tricyclic terpanes in the Mesoproterozoic Jixian System in the Yanliao Rift have intrigued researchers, raising questions about their origin and formation mechanisms. This study found that 8 13 C values of 13 alpha( n -alkyl)-tricyclic terpanes ranged from -32.7%o to -26.2%o, similar to those of kerogen and n -alkanes, but significantly more depleted in 13 C compared to 13 beta(H),14 alpha(H)-tricyclic terpanes, which ranged from -28.5%o to -25.7%o. The difference in 8 13 C values suggested that 13 alpha( n -alkyl)-tricyclic terpanes were not formed by the same mechanism or precursors as 13 beta(H),14 alpha(H)-tricyclic terpanes. No sterane biomarkers indicative of eukaryotic source input were detected. Instead, the comparable concentrations of 13 alpha( n -alkyl)-tricyclic terpanes and n -alkanes in the samples implied a possible origin from primary organic matter producers, notably cyanobacteria. Moreover, the biomarkers obtained from distinct formations within the Mesoproterozoic Jixian System exhibited an impressive degree of simplicity, similarity and mutual correlation. These findings collectively suggest the prevalence of a cyanobacteria-dominated primitive ecosystem during the Mesoproterozoic Era within the confines of the Yanliao Rift. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001210517800001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/77046]  |
| 专题 | 中国科学院广州地球化学研究所 |
| 通讯作者 | Peng, Ping'an |
| 作者单位 | 1.Shenyang Ctr China Geol Survey, Shenyang 110034, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Guangzhou Inst Geochem, Chinese Acad Sci, Guangzhou 510640, Peoples R China 4.SINOPEC, Explorat & Dev Res Inst, Northeast Oil & Gas Branch, Changchun 130062, Jilin, Peoples R China 5.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 6.China Geol Survey, Northeast Geol S&T Innovat Ctr, Shenyang 110034, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Tao,Peng, Ping'an,Li, Yongfei,et al. Molecular and carbon isotopic evidence for the possible origin of 13 α ( n-alkyl)-tricyclic terpanes in Mesoproterozoic bitumens from the Yanliao Rift, North China[J]. ORGANIC GEOCHEMISTRY,2024,190:11. |
| APA | Zhang, Tao,Peng, Ping'an,Li, Yongfei,Sun, Shouliang,Guo, Huijuan,&Pang, Haiming.(2024).Molecular and carbon isotopic evidence for the possible origin of 13 α ( n-alkyl)-tricyclic terpanes in Mesoproterozoic bitumens from the Yanliao Rift, North China.ORGANIC GEOCHEMISTRY,190,11. |
| MLA | Zhang, Tao,et al."Molecular and carbon isotopic evidence for the possible origin of 13 α ( n-alkyl)-tricyclic terpanes in Mesoproterozoic bitumens from the Yanliao Rift, North China".ORGANIC GEOCHEMISTRY 190(2024):11. |
入库方式： OAI收割
来源：广州地球化学研究所
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