| An ecological response to the Eocene/Oligocene transition revealed by the delta(13)G(TOC) record, Lanzhou Basin, NE Tibetan Plateau | |
| Wu, FL (Wu, Fuli)1,2; Zhao, Y (Zhao, Yan)1,2,3; Fang, XM (Fang, Xiaomin)1,2,4; Meng, QQ (Meng, Qingquan)5,6 | |
| Source Publication | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 2018-06-15 | |
| Volume | 159Issue:0Pages:74-80 |
| DOI | 10.1016/j.jseaes.2018.03.020 |
| Abstract | The Eocene/Oligocene (E/O) transition, corresponds to an abrupt global cooling, thought to have been one of the greatest temperature changes in the mid-Cenozoic Earth's history. Sparse studies have successfully reconstructed the terrestrial ecological response to this temperature change. Here, we report results from the study of organic carbon isotopes (delta C-13(TOC)), together with n-alkanes biomarker analysis, in the Yongdeng Section, Lanzhou Basin, Northwest China, and discuss changes in delta C-13(TOC) and their mechanisms. The results show that between 35.3 Ma and 31.0 Ma, delta C-13(TOC) ranged from- 26.72 parts per thousand to- 21.27 parts per thousand. The main change occurred at 33.4 Ma, when 813Groc became heavier by 3 parts per thousand. At this time the long-chain n-alkane members (C-27, C-29 and C-31) were dominant, suggesting the most likely sources of organic matter were terrestrial plants. Combining these results with existing measurements of plant delta C-13(TOC) and sporopollen data in adjacent areas, we infer that this change at 33.4 Ma might have been caused by an increase in gymnosperm content especially coniferous trees adapted to cold climates, which have a heavier delta C-13(TOC) than that of the angiosperms, this would have been a response to the global cooling characteristic of this period. |
| WOS ID | WOS:000436213700008 |
| Language | 英语 |
| Indexed By | SCIE |
| Keyword | CARBON ISOTOPIC COMPOSITION EOCENE-OLIGOCENE TRANSITION CHINESE-LOESS-PLATEAU ATMOSPHERIC CO2 ORGANIC-MATTER XINING BASIN PALYNOLOGICAL RECORD ENVIRONMENTAL-CHANGE VEGETATION CHANGE C-13/C-12 RATIOS |
| WOS Research Area | Geology |
| WOS Subject | Geosciences, Multidisciplinary |
| Cooperation Status | 国内 |
| ISSN | 1367-9120 |
| Department | 大陆碰撞与高原隆升重点实验室 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itpcas.ac.cn/handle/131C11/8627 |
| Collection | 图书馆 |
| Affiliation | 1.Chinese Acad Sci, Inst Tibetan Plateau Res, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China; 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China; 3.Linyi Univ, Inst Geol & Paleontol, Linyi 276000, Peoples R China; 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 5.Lanzhou Univ, Sch Earth Sci, Lanzhou 730000, Gansu, Peoples R China; 6.Lanzhou Univ, Key Lab Western Chinas Mineral Resources Gansu Pr, Lanzhou 730000, Gansu, Peoples R China. |
| Recommended Citation GB/T 7714 | Wu, FL ,Zhao, Y ,Fang, XM ,et al. An ecological response to the Eocene/Oligocene transition revealed by the delta(13)G(TOC) record, Lanzhou Basin, NE Tibetan Plateau[J]. JOURNAL OF ASIAN EARTH SCIENCES,2018,159(0):74-80. |
| APA | Wu, FL ,Zhao, Y ,Fang, XM ,&Meng, QQ .(2018).An ecological response to the Eocene/Oligocene transition revealed by the delta(13)G(TOC) record, Lanzhou Basin, NE Tibetan Plateau.JOURNAL OF ASIAN EARTH SCIENCES,159(0),74-80. |
| MLA | Wu, FL ,et al."An ecological response to the Eocene/Oligocene transition revealed by the delta(13)G(TOC) record, Lanzhou Basin, NE Tibetan Plateau".JOURNAL OF ASIAN EARTH SCIENCES 159.0(2018):74-80. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 2018167.pdf（2219KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment