Jurassic sedimentation in the south-central Qiangtang terrane reveals successive terrane collisions in central Tibet

doi:10.1130/GES01649.1

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 粉尘与环境研究室

	Jurassic sedimentation in the south-central Qiangtang terrane reveals successive terrane collisions in central Tibet
	Li, Lin 1; Garzione, Carmala N.4; Fan, Majie 1; Li, Xiaowei 2; Li, Xiangzhong 3
刊名	GEOSPHERE
	2019-04-01
卷号	15 期号:2 页码:433-449
ISSN号	1553-040X
DOI	10.1130/GES01649.1
通讯作者	Li, Lin(li.lin8611@gmail.com)
英文摘要	Our limited knowledge of Mesozoic tectonism in the Tibetan Plateau has hindered understanding of its geologic evolution. This study uses zircon U-Pb geochronology to refine regional chronostratigraphy and infer the Jurassic sedimentary-tectonic evolution of the Bangong suture and the south-central Qiangtang terrane in the central plateau. During the late Early-early Middle Jurassic, fan delta and alluvial fan deposits sourced from the Amdo basement to the south occurred within the Amdo suture zone, as a result of collision between the Amdo basement and Qiangtang terrane. Since the Bajocian of the Middle Jurassic, continued sea-level rise transformed the Qiangtang terrane into a south-facing shallow continental shelf, and sedimentary detritus was predominantly sourced from the Hoh Xil and Kunlun terranes to the north. The contemporaneous magmatic arc in southern Qiangtang terrane was most likely submerged in a marine setting and did not contribute much detritus to the Middle Jurassic strata. Starting from the early Late Jurassic, a depositional hiatus occurred in the southern Qiangtang terrane, whereas the shallow marine to deltaic deposition in the central Qiangtang terrane received detritus not only from the Hoh Xil and Kunlun terranes to the north, but also from the magmatic arc in southern Qiangtang terrane to the south. The arrival of abundant Jurassic arc-derived detritus in central Qiangtang terrane since ca. 163 Ma was most likely caused by the early Late Jurassic initial collision between the Lhasa and Qiangtang terranes, which raised the southern Qiangtang magmatic arc to be a source region.
资助项目	U.S. National Science Foundation[EAR-1211527] ; U.S. National Science Foundation[EAR-1348005] ; National Science Foundation of China[40921120406]
WOS关键词	U-PB GEOCHRONOLOGY ; TECTONIC EVOLUTION ; NORTHERN TIBET ; ZIRCON GEOCHRONOLOGY ; VOLCANIC-ROCKS ; BASEMENT ROCKS ; WESTERN TIBET ; LHASA TERRANE ; AMDO TERRANE ; CONSTRAINTS
WOS研究方向	Geology
语种	英语
出版者	GEOLOGICAL SOC AMER, INC
WOS记录号	WOS:000462476700008
资助机构	U.S. National Science Foundation ; National Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/14197]
专题	地球环境研究所_粉尘与环境研究室
通讯作者	Li, Lin
作者单位	1.Univ Texas Arlington, Dept Earth & Environm Sci, Arlington, TX 76019 USA 2.China Univ Geosci, Sch Earth Sci & Resources, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, Xian 710075, Shaanxi, Peoples R China 4.Univ Rochester, Dept Earth & Environm Sci, Rochester, NY 14627 USA
推荐引用方式 GB/T 7714	Li, Lin,Garzione, Carmala N.,Fan, Majie,et al. Jurassic sedimentation in the south-central Qiangtang terrane reveals successive terrane collisions in central Tibet[J]. GEOSPHERE,2019,15(2):433-449.
APA	Li, Lin,Garzione, Carmala N.,Fan, Majie,Li, Xiaowei,&Li, Xiangzhong.(2019).Jurassic sedimentation in the south-central Qiangtang terrane reveals successive terrane collisions in central Tibet.GEOSPHERE,15(2),433-449.
MLA	Li, Lin,et al."Jurassic sedimentation in the south-central Qiangtang terrane reveals successive terrane collisions in central Tibet".GEOSPHERE 15.2(2019):433-449.