New paleomagnetic constraints for Platybelodon and Hipparion faunas in the Linxia Basin and their ecological environmental implications
文献类型：期刊论文
| 作者 | Zhang Weilin1; Appel, Erwin2; Wang Jiuyi3; Fang Xiaomin1; Zan Jinbo1; Yang Yibo1; Miao Yunfa4; Yan Xiaoli5 |
| 刊名 | GLOBAL AND PLANETARY CHANGE
 |
| 出版日期 | 2019-05-01 |
| 卷号 | 176页码:71-83 |
| 关键词 | Paleomagnetism Fluviolacustrine sediment Fossil mammals Ecological environment Linxia Basin |
| ISSN号 | 0921-8181 |
| DOI | 10.1016/j.gloplacha.2019.03.002 |
| 通讯作者 | Zhang Weilin(zhangwl@itpcas.ac.cn) |
| 英文摘要 | The Linxia Basin in northwestern China lies topographically at the northeastern margin of the Tibetan Plateau and climatically at the western margin of the East Asian monsoon region, and bears abundant mammalian fossils with environmental significance on central Asian aridification and east Asian monsoon evolution. However, these mammals have not been precisely dated, hindering our ability to address the ecologic environment changes associated with the evolution of the Asian monsoon and multiple uplifts of the Tibetan Plateau. We present a detailed paleomagnetic study of a sedimentary sequence from the Laogou section in the Linxia Basin containing many mammalian fossils with ages ranging between middle and late Miocene. The 203 m thick section revealed 11 normal and 10 reversed zones that correlate well with chrons 3An to 5An of the Geomagnetic Polarity Time Scale, constraining its age to similar to 12.56-6.0 Ma, and suggesting that the middle Miocene Platybelodon fauna existed at about 11.5 Ma and the late Miocene Hipparion fauna occurred at about 6.4 Ma. These ages, combined with other magnetostratigraphic results from the whole basin, show that these two major mammal faunas lived during 12.5-11.1 Ma and 11.5-6.3 Ma in the Linxia Basin. The presence of well-developed floodplain paleosols, the color change of the fluviolacustrine sediments and the transition of large bodied mammals suggest that strong climatic and environmental changes happened in the Linxia Basin during late - middle Miocene, in the form of a transition from the warm and humid forest to the warm and subarid steppe at about 11.1 Ma. |
| 收录类别 | SCI |
| WOS关键词 | NORTHEASTERN TIBETAN PLATEAU ; MIDDLE MIOCENE ; MA ; PROBOSCIDEA ; SEQUENCE ; HEZHENG ; GANSU |
| WOS研究方向 | Physical Geography ; Geology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000465364600006 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555444 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zhang Weilin |
| 作者单位 | 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100010, Peoples R China 2.Univ Tubingen, Dept Geosci, Holderlinstr 12, D-72074 Tubingen, Germany 3.Chinese Acad Geol Sci, Inst Mineral Resources, MLR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China 4.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China 5.Lanzhou Univ, Key Lab Western Chinas Mineral Resources Gansu Pr, Sch Earth Sci, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang Weilin,Appel, Erwin,Wang Jiuyi,et al. New paleomagnetic constraints for Platybelodon and Hipparion faunas in the Linxia Basin and their ecological environmental implications[J]. GLOBAL AND PLANETARY CHANGE,2019,176:71-83. |
| APA | Zhang Weilin.,Appel, Erwin.,Wang Jiuyi.,Fang Xiaomin.,Zan Jinbo.,...&Yan Xiaoli.(2019).New paleomagnetic constraints for Platybelodon and Hipparion faunas in the Linxia Basin and their ecological environmental implications.GLOBAL AND PLANETARY CHANGE,176,71-83. |
| MLA | Zhang Weilin,et al."New paleomagnetic constraints for Platybelodon and Hipparion faunas in the Linxia Basin and their ecological environmental implications".GLOBAL AND PLANETARY CHANGE 176(2019):71-83. |
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来源：寒区旱区环境与工程研究所
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