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

文献类型：期刊论文

作者Fu, Hanpu1; Hu, Xiumian1; Crouch, Erica M.2; An, Wei1,3; Wang, Jiangang4; Garzanti, Eduardo5
刊名SCIENCE CHINA-EARTH SCIENCES
出版日期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
DOI10.1007/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.
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
资助项目National Natural Science Foundation of China[41525007] ; National Natural Science Foundation of China[41602115]
WOS研究方向Geology
语种英语
WOS记录号WOS:000442228800005
出版者SCIENCE PRESS
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
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.

入库方式： OAI收割

来源：地质与地球物理研究所

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