Source rock and climate model for the Cretaceous Jiufotang Formation, Kazuo Basin, China: Geochemistry and petrography
文献类型：期刊论文
| 作者 | Liu, Shangli2,3; Gai, Haifeng1,3; Cheng, Peng1,3; Zhou, Qin1,3; Li, Tengfei1,3; Ji, Sui1,3; Wang, Xing1,3; Tian, Hui1,3 |
| 刊名 | ORGANIC GEOCHEMISTRY
 |
| 出版日期 | 2024-06-01 |
| 卷号 | 192页码:17 |
| 关键词 | Biomarkers Organic matter enrichment Jiufotang formation Climate Early Cretaceous |
| ISSN号 | 0146-6380 |
| DOI | 10.1016/j.orggeochem.2024.104781 |
| 英文摘要 | The Lower Cretaceous Jiufotang Formation, situated in western Liaoning Province, China, has attracted attention for abundant Jehol Biota fossils and the potential to improve understanding of the relationships among climate change, evolution of terrigenous organisms, and organic matter (OM) enrichment in lake systems during the Early Cretaceous. Based on organic petrology and biomarker analyses, this study investigated the depositional environment, OM sources, and enrichment mechanism of Jiufotang mudstone in the Kazuo Basin. Maceral composition shows that the OM source of Jiufotang mudstone shifted from mainly aquatic to terrigenous, and biomarkers such as abundant diterpenoids and retene indicate that terrigenous higher plants were mainly conifers during deposition of the Jiufotang Formation. Pr/Ph ratios (0.07-0.65) show that the studied section was deposited in anoxic bottom water that may be necessary for OM enrichment in lake systems. Gravity flows were accompanied by input of many clastic minerals and oxygenation of bottom waters, which is unfavorable for OM enrichment. Therefore, the best OM enrichment model for lake systems includes anoxic bottom water, stable water column stratification, low sedimentation rates, and high phytoplankton contributions. The climate changed from relatively dry to humid, which drove changes in the OM enrichment model in the lake. More importantly, the climate and terrigenous plant information obtained by biomarkers is useful to reconstruct the ecological environment of the Jehol Biota. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001298796900001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/80617]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Gai, Haifeng |
| 作者单位 | 1.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Shangli,Gai, Haifeng,Cheng, Peng,et al. Source rock and climate model for the Cretaceous Jiufotang Formation, Kazuo Basin, China: Geochemistry and petrography[J]. ORGANIC GEOCHEMISTRY,2024,192:17. |
| APA | Liu, Shangli.,Gai, Haifeng.,Cheng, Peng.,Zhou, Qin.,Li, Tengfei.,...&Tian, Hui.(2024).Source rock and climate model for the Cretaceous Jiufotang Formation, Kazuo Basin, China: Geochemistry and petrography.ORGANIC GEOCHEMISTRY,192,17. |
| MLA | Liu, Shangli,et al."Source rock and climate model for the Cretaceous Jiufotang Formation, Kazuo Basin, China: Geochemistry and petrography".ORGANIC GEOCHEMISTRY 192(2024):17. |
入库方式： OAI收割
来源：广州地球化学研究所
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