New magnetochronology of Late Miocene mammal fauna, NE Tibetan Plateau, China: Mammal migration and paleoenvironments

doi:10.1016/j.epsl.2015.11.019

	New magnetochronology of Late Miocene mammal fauna, NE Tibetan Plateau, China: Mammal migration and paleoenvironments
	Ao, Hong 2; Lu, Fengyan 2; Lin, Shan 1,2; Li, Xingwen 1,2; Zhang, Peng 2; Dekkers, Mark J.4; Roberts, Andrew P.3; An, Zhisheng 2; Li, Yongxiang 5
刊名	EARTH AND PLANETARY SCIENCE LETTERS
	2016-01-15
卷号	434 期号:2016 页码:220-230
关键词	Magnetostratigraphy Stegodon Mammal Migration Paleoenvironment Tibetan Plateau Late Miocene
DOI	10.1016/j.epsl.2015.11.019
文献子类	Article
英文摘要	Lanzhou Basin lies on the northeastern margin of the Tibetan Plateau in western China and is a rich source of Oligocene-Miocene mammalian fossils. Obtaining precise age determinations for these fossils is important to address key questions concerning mammalian and environmental evolution in Asia associated with stepwise Tibetan Plateau uplift. Here we report a new magnetostratigraphic record for the Xingjiawan fluvio-lacustrine section from the northwestern margin of Lanzhou Basin that can be correlated to the geomagnetic polarity timescale with two options. The Late Miocene Xingjiawan Fauna is located either at the boundary between reversed polarity chron C4r.lr and normal polarity chron C4n.2n or at the boundary between subchrons C5r.lr and C5n.2n, with an estimated age of at least similar to 8 Ma or perhaps as early as similar to 11 Ma. Both age estimations imply that the fossil Stegodon in the Lanzhou Basin is the oldest known record of Stegodon worldwide; it predates the formerly oldest Stegodon find from Africa by at least one million years and perhaps by as many as four million years. This provides new evidence for an Asian origin of Stegodon. Together with other faunal components, a mixed woodland/grassland setting existed in the Lanzhou Basin during the Late Miocene, in contrast to its modern arid environment. (C) 2015 Elsevier B.V. All rights reserved.
WOS关键词	TIANSHAN MOUNTAINS ; TERTIARY DEPOSITS ; LANZHOU BASIN ; MAGNETOSTRATIGRAPHY ; UPLIFT ; MA ; RECORD ; CLIMATE ; PLEISTOCENE ; PROVINCE
WOS研究方向	Geochemistry & Geophysics
语种	英语
WOS记录号	WOS:000368870500021
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5838]
专题	地球环境研究所_古环境研究室
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China 3.Australian Natl Univ, Res Sch Earth Sci, GPO Box 4, Canberra, ACT 2601, Australia 4.Univ Utrecht, Fac Geosci, Dept Earth Sci, Paleomagnet Lab Ft Hoofddijk, Budapestlaan 17, NL-3584 CD Utrecht, Netherlands 5.NW Univ Xian, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Peoples R China
推荐引用方式 GB/T 7714	Ao, Hong,Lu, Fengyan,Lin, Shan,et al. New magnetochronology of Late Miocene mammal fauna, NE Tibetan Plateau, China: Mammal migration and paleoenvironments[J]. EARTH AND PLANETARY SCIENCE LETTERS,2016,434(2016):220-230.
APA	Ao, Hong.,Lu, Fengyan.,Lin, Shan.,Li, Xingwen.,Zhang, Peng.,...&Li, Yongxiang.(2016).New magnetochronology of Late Miocene mammal fauna, NE Tibetan Plateau, China: Mammal migration and paleoenvironments.EARTH AND PLANETARY SCIENCE LETTERS,434(2016),220-230.
MLA	Ao, Hong,et al."New magnetochronology of Late Miocene mammal fauna, NE Tibetan Plateau, China: Mammal migration and paleoenvironments".EARTH AND PLANETARY SCIENCE LETTERS 434.2016(2016):220-230.