气候变化领域集成服务门户(CCPortal): Magnetostratigraphic constraints on the age of the Hipparion fauna in the Linxia Basin of China; and its implications for stepwise aridification

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DOI	10.1016/j.palaeo.2019.109413
	Magnetostratigraphic constraints on the age of the Hipparion fauna in the Linxia Basin of China; and its implications for stepwise aridification
	Zhang W.; Fang X.; Song C.; Yan M.; Wang J.; Zhang Z.; Wu F.; Zan J.; Zhang T.; Yang Y.; Tan M.
发表日期	2019
ISSN	0031-0182
英文摘要	Late Cenozoic sediments in the Linxia Basin of China, on the northeastern Tibetan Plateau, bear abundant fossils of the Hipparion fauna. From late Miocene times, these sections record a history of aridification in the Asian Interior, the evolution of the east Asian monsoon, and multiple uplifts of the Tibetan Plateau. In this paper, a new detailed magnetostratigraphic study of a sedimentary sequence from the Duikang (DK) section containing the Hipparion fauna is presented, to better understand interconnected ecologic and environmental changes. The 90-m-thick section reveals nine normal and nine reversed zones that span from chron. C5n.2n to chron. C3Ar or from chron. C4n.2n to chron. C2Ar, yielding magnetostratigraphic ages of ~8.1 Ma - 3.7 Ma for the studied section and 5.3 Ma for the Hipparion fauna-bearing bed. Combined with all the previous magnetostratigraphic ages of the fauna-bearing sediments in the Linxia Basin, Hipparion can be distinguished as mainly having lived during five periods: Phase I (11.5 Ma), Phase II (8.2 Ma), Phase III (6.3 Ma), Phase IV (~5.3 Ma) and Phase V (2.5 Ma). Based on comparison of climate records in the Linxia Basin with aridification records from surrounding regions and global cooling during the late Cenozoic, we suggest that the evolution of Hipparion from the Linxia Basin was mainly driven by continuous global cooling and tectonic uplift of the northeastern Tibetan Plateau since the late Miocene. © 2019 Elsevier B.V.
英文关键词	Aridification; Hipparion; Late miocene; Linxia basin; Magnetostratigraphy
语种	英语
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151194
作者单位	CAS Key Laboratory of Continental Collision and Plateau Uplift, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100010, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences (CAS), Beijing, 100101, China; School of Earth Sciences & Key Laboratory of Western China's Mineral Resources of Gansu Province, Lanzhou University, Lanzhou, 730000, China; MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing, 100037, China; School of Resource Environment and Tourism, Anyang Normal University, Anyang, Henan 455000, China
推荐引用方式 GB/T 7714	Zhang W.,Fang X.,Song C.,et al. Magnetostratigraphic constraints on the age of the Hipparion fauna in the Linxia Basin of China; and its implications for stepwise aridification[J],2019.
APA	Zhang W..,Fang X..,Song C..,Yan M..,Wang J..,...&Tan M..(2019).Magnetostratigraphic constraints on the age of the Hipparion fauna in the Linxia Basin of China; and its implications for stepwise aridification.Palaeogeography, Palaeoclimatology, Palaeoecology.
MLA	Zhang W.,et al."Magnetostratigraphic constraints on the age of the Hipparion fauna in the Linxia Basin of China; and its implications for stepwise aridification".Palaeogeography, Palaeoclimatology, Palaeoecology (2019).