Multiple controls on the preservation of organic matter in the lower Mississippian Luzhai Formation black shale in southern China
文献类型：期刊论文
| 作者 | Liu, Zeyang2,3,5; Tian, Hui2,3; Sageman, Bradley B.6; Wu, Yaowen2,3; Li, Tengfei2,3; Wang, Xinyu1,4; Cen, Wenpan1; Chen, Jiyu1 |
| 刊名 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 655页码:14 |
| 关键词 | Carbon isotope Nitrogen isotope Climate cooling Organic matter enrichment |
| ISSN号 | 0031-0182 |
| DOI | 10.1016/j.palaeo.2024.112508 |
| 英文摘要 | The early Carboniferous experienced profound climate cooling that drove the Earth's climate from a mid-Paleozoic greenhouse into the Late Paleozoic Ice Age. Several climate cooling events have been reported, including the Tournaisian and Visean (early to mid-Early Carboniferous). In this study, we perform multi-proxy analyses (organic carbon isotopes, nitrogen isotopes, major and trace elements and organic petrology/geochemistry) of samples from an early Carboniferous section in Nandan region (Guangxi, China). Our goal is to investigate the global carbon-nitrogen cycle, and associated oceanic productivity and redox perturbations, during a key climatic transition interval, as well as the controls on organic matter enrichment in the sediments. The carbon and nitrogen isotope profiles of the Nandan section record major perturbations during the mid-Tournaisian and early Visean. The mid-Tournaisian carbon isotope excursion (TICE) is marked by a positive delta C-13(org) shift of 1.8 parts per thousand (from -27.7 parts per thousand to -25.9 parts per thousand), correlating with a positive delta N-15 shift. The early Visean carbon isotope excursion (VICE) is characterized by a positive shift in delta C-13(org) (from -28.2 to -25.5 parts per thousand, with an excursion magnitude of 2.7 parts per thousand), but associated with a negative shift in delta N-15 (from +5 parts per thousand to +4 parts per thousand). The positive delta C-13(org) excursions during these events most likely reflect enhanced organic matter burial with expansion of anoxic seafloor in the global ocean. The drop in nitrogen isotope values in the early Visean is interpreted to be linked with less denitrification under more oxic conditions. The decrease of organic matter contents up section is consistent with the shift to more oxic conditions and increased sedimentary dilution caused by sea-level fall, which is ultimately controlled by orogenic events and climate cooling. |
| WOS研究方向 | Physical Geography ; Geology ; Paleontology |
| 语种 | 英语 |
| WOS记录号 | WOS:001321220800001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/81167]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Tian, Hui |
| 作者单位 | 1.Inst Geol Survey Guangxi Zhuang Autonomous Reg, Nanning 530022, Guangxi, Peoples R China 2.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 4.Guilin Univ Technol, Collaborat Innovat Ctr Explorat Nonferrous Met Dep, Guilin 541010, Guangxi, Peoples R China 5.Chengdu Univ Technol, State Key Lab Oil & Gas Reservoir Geol & Exploitat, Chengdu 610059, Peoples R China 6.Northwestern Univ, Dept Geol Sci, Evanston, IL 60208 USA |
| 推荐引用方式 GB/T 7714 | Liu, Zeyang,Tian, Hui,Sageman, Bradley B.,et al. Multiple controls on the preservation of organic matter in the lower Mississippian Luzhai Formation black shale in southern China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2024,655:14. |
| APA | Liu, Zeyang.,Tian, Hui.,Sageman, Bradley B..,Wu, Yaowen.,Li, Tengfei.,...&Chen, Jiyu.(2024).Multiple controls on the preservation of organic matter in the lower Mississippian Luzhai Formation black shale in southern China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,655,14. |
| MLA | Liu, Zeyang,et al."Multiple controls on the preservation of organic matter in the lower Mississippian Luzhai Formation black shale in southern China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 655(2024):14. |
入库方式： OAI收割
来源：广州地球化学研究所
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