Carbon Isotope Composition and Geochemical Features of Sediments From Gongga Mountain, China, and Potential Environmental Implications
文献类型：期刊论文
| 作者 | Wu, Yingqin5; Wang, Tong1,3; Liu, Yan5; Ma, Rong4,5; Chen, Zhangxin2 |
| 刊名 | FRONTIERS IN EARTH SCIENCE
 |
| 出版日期 | 2022-06-09 |
| 卷号 | 10页码:11 |
| 关键词 | n-alkanes n-alkan-2-ones geochemical features carbon isotope composition Gongga Mountain |
| DOI | 10.3389/feart.2022.865575 |
| 英文摘要 | Using gas chromatography-triple quadrupole tandem mass spectrometry (GC-MS/MS), the soluble organic matter was analyzed for the first time in twenty-two sediment samples from the eastern slopes of the Gongga Mountain, China, at high altitudes between 4,600 and 6,700 m. The C-11-C-33 n-alkanes and C-9-C-33 n-alkan-2-ones were identified in these samples. Both compounds were dominated by odd carbon numbers in the long-chain molecules and contained a maximum of n-C-27 or n-C-29, indicating that the sediments were predominantly of higher plant origin. However, the short-chain n-alkan-2-ones, with a maximum content of n-C-17 or i-C-18 (phytone, 6, 10, 14-trimethylpentadecan-2-one), did not show a predominance of odd and even numbers, suggesting that they were predominantly derived from bacteria and algae. Therefore, we suggest that the organic matter in Gongga Mountain comes from three sources, i.e. bacteria, algae, and higher plants. Stable carbon isotope (delta C-13) values ranged from -24.6 parts per thousand to -27.3 parts per thousand, indicating that C-3 plants were the dominant organic input to the sediments and suggesting a relatively colder and drier depositional environment. However, C-4 plants increase sharply at high altitudes of 6,300-6,600 m, suggesting that the paleoclimate of Gongga Mountain became drier and wetter with the increase of altitude. |
| WOS关键词 | N-ALKANE DISTRIBUTIONS ; ROCK-EVAL PYROLYSIS ; ORGANIC-MATTER ; SICHUAN PROVINCE ; CLIMATE-CHANGE ; SHAN RANGE ; DELTA-C-13 ; PLANTS ; LOESS ; INDICATORS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | FRONTIERS MEDIA SA |
| WOS记录号 | WOS:000814864800001 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/105886]  |
| 专题 | 地质与地球物理研究所_兰州油气中心 |
| 通讯作者 | Wu, Yingqin; Chen, Zhangxin |
| 作者单位 | 1.Beijing Jiaotong Univ, Sch Environm, Beijing, Peoples R China 2.Univ Calgary, Schulich Sch Engn, Dept Chem & Petr Engn, Calgary, AB, Canada 3.Newcastle Univ, Sch Engn, Newcastle Upon Tyne, England 4.Univ Chinese Acad Sci, Beijing, Peoples R China 5.Chinese Acad Sci, Gansu Prov Northwest Inst Ecoenvironm & Resources, Key Lab Petr Resources, Lanzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Yingqin,Wang, Tong,Liu, Yan,et al. Carbon Isotope Composition and Geochemical Features of Sediments From Gongga Mountain, China, and Potential Environmental Implications[J]. FRONTIERS IN EARTH SCIENCE,2022,10:11. |
| APA | Wu, Yingqin,Wang, Tong,Liu, Yan,Ma, Rong,&Chen, Zhangxin.(2022).Carbon Isotope Composition and Geochemical Features of Sediments From Gongga Mountain, China, and Potential Environmental Implications.FRONTIERS IN EARTH SCIENCE,10,11. |
| MLA | Wu, Yingqin,et al."Carbon Isotope Composition and Geochemical Features of Sediments From Gongga Mountain, China, and Potential Environmental Implications".FRONTIERS IN EARTH SCIENCE 10(2022):11. |
入库方式： OAI收割
来源：地质与地球物理研究所
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