Reconstructing the palaeoecology of a middle Permian alkaline lake using molecular fossils, case study of the Lucaogou Formation in the Junggar
文献类型：期刊论文
| 作者 | Ding, Wenjing4,5,6; Hou, Dujie5,6; Li, Li3; Jiang, Lian2,4; Zhang, Ziming6; Jiang, Yuhan1; George, Simon C.4 |
| 刊名 | ORGANIC GEOCHEMISTRY
 |
| 出版日期 | 2024-07-01 |
| 卷号 | 193页码:20 |
| 关键词 | Associate Editor Maria-Fernanda Romero Sarmiento Biological diversity Type I methanotrophs Cyanobacteria Sulfur bacteria Chlorophyta Conifers |
| ISSN号 | 0146-6380 |
| DOI | 10.1016/j.orggeochem.2024.104791 |
| 英文摘要 | The lacustrine Lucaogou Formation was deposited during the middle Permian in the Junggar Basin, northwestern China. The depositional environment was an alkaline, brackish to saline lake. The biological diversity of the Lucaogou Formation was reconstructed using biologically informative molecules such as n-alkanes, steranes, and hopanes, and the 813C composition of organic matter. C30 4a-methyl-24-ethylsterane, C31 lanostane, and abundant C30 - C31 313-methylhopanes were detected in the organic matter, suggesting the presence of type I aerobic methanotrophs including the Methylococcaceae. C30 - C31 2a-methylhopanes and 7- and 8-methylheptadecanes are suggestive of the presence of cyanobacteria. Cyanobacteria and green algae are proposed to have made the dominant contribution to the organic matter. The presence of more 13C-enriched hopanoids in the lower unit compared to the upper unit of the Lucaogou Formation suggest a greater contribution of cyanobacteria to the organic matter in the lower unit. The high abundances of C28 and C29 steranes relative to C27 steranes are likely due to green algae from the Chlorophyta, including the class Chlorophyceae. Dinosteranes that are diagnostic for dinoflagellates were not detected. The low concentrations of C40 isorenieratane, renieratane, 13-isorenieratane, renierapurpurane, and 13-renierapurpurane that are indicative of photosynthetic green and purple sulfur bacteria indicate a minor contribution from Chlorobiaceae and Chromatiaceae to the organic matter. It is inferred that low to moderate amounts of ciliates grew at or below the relatively unstable chemocline in the lake. The presence of C19-norisopimarane, 813(H)-labdane, and 413(H)-19-norisopimarane suggests the presence of coniferous plants growing around the lake, probably including Pinaceae, Araucariaceae, |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001250703600001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/78381]  |
| 专题 | 中国科学院广州地球化学研究所 |
| 通讯作者 | Hou, Dujie; George, Simon C. |
| 作者单位 | 1.Guangzhou Marine Geol Survey, Guangzhou 510075, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, Beijing, Peoples R China 3.CNOOC Int Ltd, Beijing 100028, Peoples R China 4.Macquarie Univ, Sch Nat Sci, Sydney, NSW 2109, Australia 5.CNOOC, Res Inst, Beijing 100028, Peoples R China 6.China Univ Geosci, Sch Energy Resources, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ding, Wenjing,Hou, Dujie,Li, Li,et al. Reconstructing the palaeoecology of a middle Permian alkaline lake using molecular fossils, case study of the Lucaogou Formation in the Junggar[J]. ORGANIC GEOCHEMISTRY,2024,193:20. |
| APA | Ding, Wenjing.,Hou, Dujie.,Li, Li.,Jiang, Lian.,Zhang, Ziming.,...&George, Simon C..(2024).Reconstructing the palaeoecology of a middle Permian alkaline lake using molecular fossils, case study of the Lucaogou Formation in the Junggar.ORGANIC GEOCHEMISTRY,193,20. |
| MLA | Ding, Wenjing,et al."Reconstructing the palaeoecology of a middle Permian alkaline lake using molecular fossils, case study of the Lucaogou Formation in the Junggar".ORGANIC GEOCHEMISTRY 193(2024):20. |
入库方式： OAI收割
来源：广州地球化学研究所
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