Upper Cretaceous trench deposits of the Neo-Tethyan subduction zone: Jiachala Formation from Yarlung Zangbo suture zone in Tibet, China

doi:10.1007/s11430-017-9223-5

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

	Upper Cretaceous trench deposits of the Neo-Tethyan subduction zone: Jiachala Formation from Yarlung Zangbo suture zone in Tibet, China
	Fu, Hanpu 1; Hu, Xiumian 1; Crouch, Erica M.2; An, Wei 1,3; Wang, Jiangang 4; Garzanti, Eduardo 5
刊名	SCIENCE CHINA-EARTH SCIENCES
	2018-09-01
卷号	61 期号:9 页码:1204-1220
关键词	Provenance analysis Trench deposits Late Cretaceous Neo-Tethyan oceanic subduction Yarlung Zangbo suture zone Tibet of China
ISSN号	1674-7313
DOI	10.1007/s11430-017-9223-5
英文摘要	The history of convergence between the India and the Asia plates, and of their subsequent collision which triggered the Himalayan orogeny is recorded in the Yarlung Zangbo suture zone. Exposed along the southern side of the suture, turbidites of the the Jiachala Formation fed largely from the Gangdese arc have long been considered as post-collisional foreland-basin deposits based on the reported occurrence of Paleocene-early Eocene dinoflagellate cysts and pollen assemblages. Because magmatic activity in the Gangdese arc continued through the Late Cretaceous and Paleogene, this scenario is incompatible with U-Pb ages of detrital zircons invariably older than the latest Cretaceous. To solve this conundrum, we carried out detailed stratigraphic, sedimentological, paleontological, and provenance analyses in the Gyangze and Sajia areas of southern Tibet, China. The Jiachala Formation consists of submarine fan deposits that lie in fault contact with the Zongzhuo Formation. Sandstone petrography together with U-Pb ages and Hf isotope ratios of detrital zircons indicate provenance from the Gangdese arc and central Lhasa terrane. Well preserved pollen or dinoflagellate cysts microfossils were not found in spite of careful research, and the youngest age obtained from zircon grain was similar to 84 Ma. Based on sedimentary facies, provenance analysis and tectonic position, we suggest that the Jiachala Formation was deposited during the Late Cretaceous (similar to 88-84 Ma) in the trench formed along the southern edge of Asia during subduction of Neo-Tethyan oceanic lithosphere.
资助项目	National Natural Science Foundation of China[41525007] ; National Natural Science Foundation of China[41602115]
WOS关键词	INDIA-ASIA COLLISION ; FORE-ARC BASIN ; ZIRCON U-PB ; HF ISOTOPIC CONSTRAINTS ; OCEANIC RED BEDS ; SOUTHERN TIBET ; XIGAZE OPHIOLITE ; FACIES ARCHITECTURE ; PROVENANCE ANALYSIS ; TECTONIC EVOLUTION
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000442228800005
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/88113]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者	Hu, Xiumian
作者单位	1.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Jiangsu, Peoples R China 2.GNS Sci, POB 30368, Lower Hutt 5040, New Zealand 3.Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Anhui, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 5.Univ Milano Bicocca, Dept Earth & Environm Sci, I-20126 Milan, Italy
推荐引用方式 GB/T 7714	Fu, Hanpu,Hu, Xiumian,Crouch, Erica M.,et al. Upper Cretaceous trench deposits of the Neo-Tethyan subduction zone: Jiachala Formation from Yarlung Zangbo suture zone in Tibet, China[J]. SCIENCE CHINA-EARTH SCIENCES,2018,61(9):1204-1220.
APA	Fu, Hanpu,Hu, Xiumian,Crouch, Erica M.,An, Wei,Wang, Jiangang,&Garzanti, Eduardo.(2018).Upper Cretaceous trench deposits of the Neo-Tethyan subduction zone: Jiachala Formation from Yarlung Zangbo suture zone in Tibet, China.SCIENCE CHINA-EARTH SCIENCES,61(9),1204-1220.
MLA	Fu, Hanpu,et al."Upper Cretaceous trench deposits of the Neo-Tethyan subduction zone: Jiachala Formation from Yarlung Zangbo suture zone in Tibet, China".SCIENCE CHINA-EARTH SCIENCES 61.9(2018):1204-1220.