Orbital-paced silicate weathering intensity and climate evolution across the Eocene-Oligocene transition in the southeastern margin of the Tibetan Plateau
文献类型：期刊论文
| 作者 | Tang, He2; Cui, Hao2,3; Li, Shu-Feng4; Spicer, Robert A.4,5; Li, Shi -Hu6; Su, Tao7,8,9; Zhou, Zhe-Kun4; Witkowski, Caitlyn R.1; Lauretano, Vittoria1; Wei, Gang-Jian2,3 |
| 刊名 | GLOBAL AND PLANETARY CHANGE
 |
| 出版日期 | 2024-03-01 |
| 卷号 | 234页码:11 |
| 关键词 | Antarctica glaciation Elemental geochemistry Chemical weathering Paleogene Orbital forcing |
| ISSN号 | 0921-8181 |
| DOI | 10.1016/j.gloplacha.2024.104388 |
| 英文摘要 | The Eocene-Oligocene transition (EOT, -33.9 Ma), a period of dramatic global cooling marking the onset of the Antarctic ice sheet. However, paleoclimatic reconstructions indicate a notable spatial heterogeneity in both the marine and terrestrial realms. While limited temporal resolution terrestrial records have hindered the precise understanding of short-term climate events and orbital-scale changes during this transition. Here, we present a chemical weathering data sequence from a fluvial-lacustrine deposition from Luhe Basin, which is located at southeastern margin of the Tibetan Plateau. Based on the radioisotope, paleomagnetic and 405 kyr orbital tuning of the elemental datasets, the deposition age of Luhe Basin is dated to -35.5-25.5 Ma. Two weakening stages of the weathering intensity are detected around Eocene-Oligocene boundary: 34.1 to 33.9 Ma and 33.8 to 33.6 Ma, which are temporally equivalent to the two global main climatic steps of EOT (EOT-1 and Oi-1). We find the chemical weathering intensity sequence paced the 1.2 Myr obliquity amplitude modulation and 405 kyr longeccentricity cycles. Notably, the minima of 1.2 Myr obliquity amplitude and 405 kyr eccentricity are synchronous with the Oil-1 event. These patterns highlight the role of orbital forcing in shaping the cooling trend across the EOT and may trigger Antarctic glaciation. |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001202363400001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/77130]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 通讯作者 | Wei, Gang-Jian |
| 作者单位 | 1.Univ Bristol, Sch Chem, Organ Geochem Unit, Bristol BS8 1QU, Avon, England 2.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, CAS Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Peoples R China 5.Open Univ, Sch Environm Earth & Ecosyst Sci, Walton Hall, Milton Keynes MK7 6AA, Bucks, England 6.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100049, Peoples R China 7.Chengdu Univ Technol, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610059, Peoples R China 8.Chengdu Univ Technol, Inst Sedimentary Geol, Chengdu 610059, Peoples R China 9.Chengdu Univ Technol, Int Ctr Palaeoecol Res, Chengdu 610059, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, He,Cui, Hao,Li, Shu-Feng,et al. Orbital-paced silicate weathering intensity and climate evolution across the Eocene-Oligocene transition in the southeastern margin of the Tibetan Plateau[J]. GLOBAL AND PLANETARY CHANGE,2024,234:11. |
| APA | Tang, He.,Cui, Hao.,Li, Shu-Feng.,Spicer, Robert A..,Li, Shi -Hu.,...&Wei, Gang-Jian.(2024).Orbital-paced silicate weathering intensity and climate evolution across the Eocene-Oligocene transition in the southeastern margin of the Tibetan Plateau.GLOBAL AND PLANETARY CHANGE,234,11. |
| MLA | Tang, He,et al."Orbital-paced silicate weathering intensity and climate evolution across the Eocene-Oligocene transition in the southeastern margin of the Tibetan Plateau".GLOBAL AND PLANETARY CHANGE 234(2024):11. |
入库方式： OAI收割
来源：广州地球化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。