IGGCAS OpenIR  > 新生代地质与环境院重点实验室
Late Oligocene-early Miocene transformation of postcollisional magmatism in Tibet
Guo, Zhengfu1,2; Wilson, Marjorie3
2019-08-01
Source PublicationGEOLOGY
ISSN0091-7613
Volume47Issue:8Pages:776-780
AbstractUplift of the Tibetan Plateau is thought to be one of the most important orogenic and climate forcing events of the Cenozoic Era, associated with geodynamic changes related to India-Asia collision and subsequent continental lithosphere subduction. However, the fate and scale of the subducted continental lithosphere segments remain highly controversial. Using a comprehensive compilation of the spatiotemporal distribution of postcollisional magmatic rocks across Tibet, together with new geochemical and Sr-Nd-Pb isotopic data and modeling simulations, we propose a holistic, two-stage evolutionary model to explain the link between genesis of the magmas and continental subduction. The magmatism prior to 25 Ma resulted from continuous upwelling of a carbonate-rich upper-mantle plume induced by northward underthrusting of Indian oceanic and continental lithosphere with its cover of Tethyan platform carbonate sediments, whereas magmatism after 25 Ma was related to opposing north-directed and south-directed continental subduction. Our model indicates a transformation in the distribution and nature of the magmatism in Tibet at ca. 25 Ma, which reflects a significant change in the Himalayan-Tibetan orogen and associated mantle dynamic processes in the early Miocene. Understanding this transformation could have important implications for the utility of the Himalayan-Tibetan system as a modern analogue for ancient orogens.
DOI10.1130/G46147.1
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research ; Key Research Project of Frontier Sciences of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research ; Key Research Project of Frontier Sciences of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research ; Key Research Project of Frontier Sciences of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research ; Key Research Project of Frontier Sciences of the Chinese Academy of Sciences ; National Natural Science Foundation of China
WOS KeywordEAST-WEST EXTENSION ; MAFIC MAGMATISM ; NORTHERN TIBET ; SOUTHERN TIBET ; MANTLE SOURCE ; CONSTRAINTS ; SUBDUCTION ; CRUSTAL ; ROCKS ; INDIA
Language英语
Funding ProjectStrategic Priority Research Program of the Chinese Academy of Sciences[XDB26000000] ; Second Tibetan Plateau Scientific Expedition and Research[2019QZKK0702] ; Key Research Project of Frontier Sciences of the Chinese Academy of Sciences[QYZDY-SSW-DQC030] ; National Natural Science Foundation of China[41772355]
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research ; Key Research Project of Frontier Sciences of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research ; Key Research Project of Frontier Sciences of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research ; Key Research Project of Frontier Sciences of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Second Tibetan Plateau Scientific Expedition and Research ; Key Research Project of Frontier Sciences of the Chinese Academy of Sciences ; National Natural Science Foundation of China
WOS Research AreaGeology
WOS SubjectGeology
WOS IDWOS:000476707800027
PublisherGEOLOGICAL SOC AMER, INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/92944
Collection新生代地质与环境院重点实验室
Corresponding AuthorGuo, Zhengfu
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
2.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
3.Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England
Recommended Citation
GB/T 7714
Guo, Zhengfu,Wilson, Marjorie. Late Oligocene-early Miocene transformation of postcollisional magmatism in Tibet[J]. GEOLOGY,2019,47(8):776-780.
APA Guo, Zhengfu,&Wilson, Marjorie.(2019).Late Oligocene-early Miocene transformation of postcollisional magmatism in Tibet.GEOLOGY,47(8),776-780.
MLA Guo, Zhengfu,et al."Late Oligocene-early Miocene transformation of postcollisional magmatism in Tibet".GEOLOGY 47.8(2019):776-780.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Guo, Zhengfu]'s Articles
[Wilson, Marjorie]'s Articles
Baidu academic
Similar articles in Baidu academic
[Guo, Zhengfu]'s Articles
[Wilson, Marjorie]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Guo, Zhengfu]'s Articles
[Wilson, Marjorie]'s Articles
Terms of Use
No data!
Social Bookmark/Share
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit Add to Technorati
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.