Evidence for northeastern Tibetan Plateau uplift between 25 and 20 Ma in   the sedimentary archive of the Xining Basin, Northwestern China

doi:10.1016/j.epsl.2011.11.008

CORC > 北京大学 > 地球与空间科学学院

	Evidence for northeastern Tibetan Plateau uplift between 25 and 20 Ma in the sedimentary archive of the Xining Basin, Northwestern China
	Xiao, Guoqiao ; Guo, Zhengtang ; Dupont-Nivet, Guillaume ; Lu, Houyuan ; Wu, Naiqin ; Ge, Junyi ; Hao, Qingzhen ; Peng, Shuzhen ; Li, Fengjiang ; Abels, Hemmo A. ; Zhang, Kexin
刊名	earth and planetary science letters
	2012
关键词	NE Tibet magnetostratigraphy tectonic uplift paleoclimate sedimentary provenance Xining Basin LATE CENOZOIC DEFORMATION APATITE FISSION-TRACK ALTYN-TAGH FAULT EARLY MIOCENE LATE OLIGOCENE ASIAN MONSOON LINXIA BASIN GUIDE BASIN TECTONIC EVOLUTION MIDDLE MIOCENE
DOI	10.1016/j.epsl.2011.11.008
英文摘要	The growth history of the Tibetan Plateau provides a valuable natural laboratory to understand tectonic processes of the India-Asia collision and their impact on and interactions with Asian and global climate change. However, both Tibetan Plateau growth and Asian paleoenvironments are generally poorly documented in pre-Pliocene times and reflect limited temporal coverage for different parts of the plateau. Here we present magnetostratigraphic results from the Xining Basin, at the NE margin of the Tibetan Plateau, precisely dating the record between the earliest Oligocene (similar to 33 Ma) to the middle Miocene (similar to 16 Ma). The pattern of observed paleomagnetic polarity zones is unequivocally correlated to the geomagnetic polarity time scale (GPTS) indicating relatively constant and low sediment accumulation rates (32 m/Myr) except for a peculiar period of unstable accumulation between 25.3 and 19.7 Ma. At the beginning of this interval, a marked permanent increase in magnetite content of the sediments is observed and likely relates to a change in provenance. We directly relate this unstable period of sediment accumulation and provenance change to the coeval exhumation recently reported by low-temperature thermochronology from the Laji Shan range, which subsequently formed the southern margin of the Xining Basin. Evidence for NE Tibet tectonism at 25-20 Ma can be associated with widespread deformation over the entire Himalayan-Tibetan orogen at this time, which may be linked to the coeval appearance of monsoon climate in Eastern Asia and the onset of central Asian desertification. (C) 2011 Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000301616700019&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Geochemistry & Geophysics; SCI(E); 47; ARTICLE; 185-195; 317
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/234827]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Xiao, Guoqiao,Guo, Zhengtang,Dupont-Nivet, Guillaume,et al. Evidence for northeastern Tibetan Plateau uplift between 25 and 20 Ma in the sedimentary archive of the Xining Basin, Northwestern China[J]. earth and planetary science letters,2012.
APA	Xiao, Guoqiao.,Guo, Zhengtang.,Dupont-Nivet, Guillaume.,Lu, Houyuan.,Wu, Naiqin.,...&Zhang, Kexin.(2012).Evidence for northeastern Tibetan Plateau uplift between 25 and 20 Ma in the sedimentary archive of the Xining Basin, Northwestern China.earth and planetary science letters.
MLA	Xiao, Guoqiao,et al."Evidence for northeastern Tibetan Plateau uplift between 25 and 20 Ma in the sedimentary archive of the Xining Basin, Northwestern China".earth and planetary science letters (2012).