Late Cretaceous-earliest Paleogene deformation in the Longmen Shan fold-and-thrust belt, eastern Tibetan Plateau margin: Pre-Cenozoic thickened crust?

doi:10.1002/2016TC004182

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	Late Cretaceous-earliest Paleogene deformation in the Longmen Shan fold-and-thrust belt, eastern Tibetan Plateau margin: Pre-Cenozoic thickened crust?
	Tian, Yuntao 1,2,3; Kohn, Barry P.1; Phillips, David 1; Hu, Shengbiao 4; Gleadow, Andrew J. W.1; Carter, Andrew 5
刊名	TECTONICS
	2016-10-01
卷号	35 期号:10 页码:2293-2312
DOI	10.1002/2016TC004182
文献子类	Article
英文摘要	This study presents structural and Ar-40/Ar-39 geochronological data from the southern part of the Longmen Shan fold-and-thrust belt that forms the eastern margin of the Tibetan Plateau. Investigations focused on hinterland ductile top-to-the-WNW shear deformation, which has been linked previously to late Cenozoic lower crustal flow. Consistent with previous studies, the sense of deformation is mapped as top-to-the-WNW in the Longmen Shan hinterland. The timing of the deformation is constrained by Ar-40/Ar-39 geochronological data of recrystallized minerals aligned along the shear foliation as Late Cretaceous-earliest Paleogene, thus predating the inferred late Cenozoic crustal flow. This deformation is contemporaneous with SE verging thrusting and loading along the Longmen Shan front, which formed a coeval similar to 2-3 km thick foredeep sequence along the southwestern margin of the Sichuan Basin. In the context of the regional geology, this tectonic configuration could result from either extrusion of a crustal wedge or back thrust in a duplex. Compared to other orogens, where similar crustal configurations have been reported, it is speculated that the eastern Tibetan Plateau margin acquired thickened crust and highly elevated topography in Late Cretaceous-earliest Paleogene time.
WOS关键词	HIMALAYAN CRYSTALLINE COMPLEX ; SOUTHERN QUEBEC APPALACHIANS ; TECTONIC EVOLUTION ; SICHUAN BASIN ; WESTERN CHINA ; AGE CONSTRAINTS ; FORELAND BASIN ; LEADING-EDGE ; FAULT ZONE ; HEAT-FLOW
WOS研究方向	Geochemistry & Geophysics
语种	英语
WOS记录号	WOS:000389332000004
资助机构	National Collaborative Research Infrastructure Strategy AuScope program ; National Collaborative Research Infrastructure Strategy AuScope program ; National Collaborative Research Infrastructure Strategy AuScope program ; National Collaborative Research Infrastructure Strategy AuScope program
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/53182]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
作者单位	1.Univ Melbourne, Sch Earth Sci, Melbourne, Vic, Australia 2.UCL, Dept Earth Sci, London, England 3.Sun Yat Sen Univ, Dept Earth Sci & Geol Engn, Guangzhou, Guangdong, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China 5.Birkbeck Univ London, Dept Earth & Planetary Sci, London, England
推荐引用方式 GB/T 7714	Tian, Yuntao,Kohn, Barry P.,Phillips, David,et al. Late Cretaceous-earliest Paleogene deformation in the Longmen Shan fold-and-thrust belt, eastern Tibetan Plateau margin: Pre-Cenozoic thickened crust?[J]. TECTONICS,2016,35(10):2293-2312.
APA	Tian, Yuntao,Kohn, Barry P.,Phillips, David,Hu, Shengbiao,Gleadow, Andrew J. W.,&Carter, Andrew.(2016).Late Cretaceous-earliest Paleogene deformation in the Longmen Shan fold-and-thrust belt, eastern Tibetan Plateau margin: Pre-Cenozoic thickened crust?.TECTONICS,35(10),2293-2312.
MLA	Tian, Yuntao,et al."Late Cretaceous-earliest Paleogene deformation in the Longmen Shan fold-and-thrust belt, eastern Tibetan Plateau margin: Pre-Cenozoic thickened crust?".TECTONICS 35.10(2016):2293-2312.