Paleomagnetic Constraints on the Middle Miocene-Early Pliocene Stratigraphy in the Xining Basin, NE Tibetan Plateau, and the Geologic Implications
文献类型：期刊论文
| 作者 | Fang, XM; Yang, RS (Yang, Rongsheng)1,2,6; Fang, XM (Fang, Xiaomin)1,2,6; Meng, QQ (Meng, Qingquan)4,5; Zan, JB (Zan, Jinbo)1,6; Zhang, WL (Zhang, Weilin)1,6; Deng, T (Deng, Tao)3; Yang, YB (Yang, Yibo)1,6; Ruan, XB (Ruan, Xiaobai)1,2,6; Yang, LY (Yang, Liye)2,6,6 |
| 刊名 | GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
 |
| 出版日期 | 2017 |
| 卷号 | 18期号:11页码:3741-3757 |
| 关键词 | Resolution Magneto Stratigraphy Eocene-oligocene Transition Late Cenozoic Deformation Linxia Basin Climate-change Guide Basin Qaidam Basin Environmental-changes Northern-hemisphere Sedimentary Archive |
| DOI | 10.1002/2017GC006945 |
| 文献子类 | Article |
| 英文摘要 | The Xining Basin lies in the transitional zone between the arid Asian interior and the East Asian monsoon region. The continuous Cenozoic sediments in the basin provide a unique archive recording the uplift of the Tibetan Plateau and its environmental effects on central Asian aridification and Asian monsoon evolution. However, sediments deposited since the middle Middle Miocene have not been precisely dated, hindering our ability to address these issues. Here we dated a 336 m-thick section containing many Late Miocene fossil mammals from the eastern basin. High-resolution paleomagnetism revealed 16 normal and 16 reversed zones that correlate well with chrons 3n to 5Ar.1r of the Geomagnetic Polarity Time Scale, constraining the section to approximate to 12.7-4.8 Ma. The changes in lithofacies from floodplain to braided river at approximate to 8.6 Ma and to thick alluvial fan at approximate to 6.3 Ma with predominantly southerly paleocurrent directions occur simultaneously with an increase in the sedimentation rates, representing two periods of rapid uplift in the eastern Qilian Shan to the north. Our results provide a robust oldest age constraint (<4.8 Ma) on the ancient Huang Shui and Yellow River terraces on the basin sediments and eolian deposits on the terraces. The presence of well-developed floodplain paleosols, shallow lake marls, and many large mammals in the lower section suggests that the monsoon climate in the late Middle Miocene to Late Miocene was more humid and stronger than that at present. |
| 学科主题 | 地质学 |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000418403800001 |
| 源URL | [http://ir.itpcas.ac.cn/handle/131C11/7947]  |
| 专题 | 青藏高原研究所_图书馆 |
| 通讯作者 | Fang, XM |
| 作者单位 | 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing, Peoples R China. 2.Univ Chinese Acad Sci, Beijing, Peoples R China. 3.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China. 4.Lanzhou Univ, Key Lab Western Chinas Mineral Resource Gansu Pro, Lanzhou, Gansu, Peoples R China. 5.Lanzhou Univ, Sch Earth Sci, Lanzhou, Gansu, Peoples R China. 6.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Fang, XM,Yang, RS ,Fang, XM ,et al. Paleomagnetic Constraints on the Middle Miocene-Early Pliocene Stratigraphy in the Xining Basin, NE Tibetan Plateau, and the Geologic Implications[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2017,18(11):3741-3757. |
| APA | Fang, XM.,Yang, RS .,Fang, XM .,Meng, QQ .,Zan, JB .,...&Li, BS .(2017).Paleomagnetic Constraints on the Middle Miocene-Early Pliocene Stratigraphy in the Xining Basin, NE Tibetan Plateau, and the Geologic Implications.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,18(11),3741-3757. |
| MLA | Fang, XM,et al."Paleomagnetic Constraints on the Middle Miocene-Early Pliocene Stratigraphy in the Xining Basin, NE Tibetan Plateau, and the Geologic Implications".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 18.11(2017):3741-3757. |
入库方式： OAI收割
来源：青藏高原研究所
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