Initial Deformation of the Northern Tibetan Plateau: Insights From Deposition of the Lulehe Formation in the Qaidam Basin

doi:10.1029/2018TC005214

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 黄土与第四纪地质国家重点实验室（2010~）

	Initial Deformation of the Northern Tibetan Plateau: Insights From Deposition of the Lulehe Formation in the Qaidam Basin
	Cheng, Feng 3,4; Garzione, Carmala N.3; Jolivet, Marc 5; Guo, Zhaojie 1; Zhang, Daowei 2; Zhang, Changhao 2; Zhang, Qiquan 2
刊名	TECTONICS
	2019-02-01
卷号	38 期号:2 页码:741-766
关键词	Paleogene Qaidam basin Tibetan plateau Lulehe Formation flexural loading estimate basin analysis
ISSN号	0278-7407
DOI	10.1029/2018TC005214
通讯作者	Cheng, Feng(cfcf.chengfeng@gmail.com)
英文摘要	The Paleogene Lulehe Formation marks the onset of deposition in the Qaidam basin and preserves evidence of the initial topographic growth of northern Tibet. However, limited outcrops impede understanding of the sedimentary features of the Lulehe Formation as well as the tectonic relationship between the basin and surrounding topography. To fill this gap, we investigated core samples along the basin margin and conducted flexural modeling to estimate the topographic load of the Qilian Shan and Eastern Kunlun Shan during the deposition of the Lulehe Formation. Core samples reveal that the Lulehe Formation mainly consists of distal fluvial to marginal lacustrine deposits and proximal fluvial deposits along the southern margin of the basin while characterized by proximal alluvial fan deposits along the northern margin of the basin. Together with evidence for faulting shown on the seismic profiles, we infer that simultaneous deformation within the Qilian Shan and Altyn Tagh Shan during the Paleogene resulted in accumulation of coarse detrital deposits in the northwestern and northeastern Qaidam basin. The simultaneous deformation within the Altyn Tagh Shan and Qilian Shan since the Paleogene supports the idea that deformation in these two regions is kinematically linked. One- and two-load beam flexural modeling indicates that the topographic load generated by both the Eastern Kunlun Shan and the Qilian Shan is responsible for the subsidence of the Qaidam basin during deposition of the Lulehe Formation. Our results highlight the initial relative high topography in the northern Tibetan plateau during the early Cenozoic.
资助项目	National Science Foundation[EAR-1348005] ; National Science Foundation[OISE-1545859] ; National Science and Technology Major Project of China[2017ZX05008-001] ; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences[SKLLQG1701]
WOS关键词	ALTYN-TAGH FAULT ; CENOZOIC TECTONIC EVOLUTION ; INDIA-ASIA COLLISION ; EARLY UPLIFT HISTORY ; EASTERN QILIAN SHAN ; U-PB GEOCHRONOLOGY ; KUNLUN FAULT ; CONTINENTAL DEFORMATION ; HEXI CORRIDOR ; RESERVOIR CHARACTERISTICS
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000462017800016
资助机构	National Science Foundation ; National Science and Technology Major Project of China ; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/14203]
专题	地球环境研究所_黄土与第四纪地质国家重点实验室（2010~）
通讯作者	Cheng, Feng
作者单位	1.Peking Univ, Sch Earth & Space Sci, Key Lab Orogen Belts & Crustal Evolut, Minist Educ, Beijing, Peoples R China 2.PetroChina, Qinghai Oilfield Co, Dunhuang, Gansu, Peoples R China 3.Univ Rochester, Dept Earth & Environm Sci, Rochester, NY 14627 USA 4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Shaanxi, Peoples R China 5.Univ Rennes 1, CNRS, Lab Geosci Rennes, Observ Sci Univers,UMR6118, Rennes, France
推荐引用方式 GB/T 7714	Cheng, Feng,Garzione, Carmala N.,Jolivet, Marc,et al. Initial Deformation of the Northern Tibetan Plateau: Insights From Deposition of the Lulehe Formation in the Qaidam Basin[J]. TECTONICS,2019,38(2):741-766.
APA	Cheng, Feng.,Garzione, Carmala N..,Jolivet, Marc.,Guo, Zhaojie.,Zhang, Daowei.,...&Zhang, Qiquan.(2019).Initial Deformation of the Northern Tibetan Plateau: Insights From Deposition of the Lulehe Formation in the Qaidam Basin.TECTONICS,38(2),741-766.
MLA	Cheng, Feng,et al."Initial Deformation of the Northern Tibetan Plateau: Insights From Deposition of the Lulehe Formation in the Qaidam Basin".TECTONICS 38.2(2019):741-766.