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Late early Cretaceous peraluminous biotite granites along the Bangong-Nujiang suture zone, Central Tibet: Products derived by partial melting of metasedimentary rocks?
Hu, Wan-Long1,2; Wang, Qiang1,2,3; Yang, Jin-Hui4; Zhang, Chunfu5; Tang, Gong-Jian1,3; Ma, Lin1; Qi, Yue1,2; Yang, Zong-Yong1,2; Sun, Peng1,2
2019-11-01
Source PublicationLITHOS
ISSN0024-4937
Volume344Pages:147-158
AbstractThe petrogenesis of biotite granites, which may be metaluminous or peraluminous in composition, is a subject of debate. In this study, we present new zircon U-Pb geochronology and O-Hf isotopic, and whole-rock major and trace element, and Sr-Nd isotopic data for biotite granites in the Langla-Laqinpu area of northern Lhasa Terrane, central Tibet. The rocks are distributed along the eastern segment of the Bangong-Nujiang Tethys Ocean suture, and were emplaced during the late Early Cretaceous (ca.119 Ma). The biotite granites are peraluminous, and have high SiO2 (67.5-72.4 wt%) and low MgO (0.57-1.20 wt%) and CaO (2.36-4.38 wt%) contents with variable K2O/Na2O ratios (0.77-132), and show geochemical affinity with the upper-continental crust, e.g enrichment of Rb, Th, U, K and Pb, depletion of Nb,Ta,Ti,P,Eu, and Sr. They are characterized by relatively high initial Sr-87/Sr-86 ratios ((Sr-87/Sr-86); = 0.7098-0.7137) and low epsilon(Nd)(t) values (-8.4 to -10.3), and high zircon delta O-18 values (8.29-13.47 parts per thousand) and variable epsilon(Hf)(t) values (-0.02 to -21.36), indicating they were derived through partial melting of a crustal source consisting of metagreywackes with or without minor metaigneous rocks. Taking into account all available regional geological data, we suggest that the Bangong-Nujiang Tethys Ocean may undergo diachronous closure-although the eastern segment may have been closed by the late Early Cretaceous, its western and western-middle segments may still have been at least partially open and active at that time. The Langla-Laqinpu biotite granites were probably generated in post-collisional setting, following slab break-off after closure of the Bangong-Nujiang Tethys Ocean. (C) 2019 Elsevier B.V. All rights reserved.
KeywordEarly Cretaceous Biotite granite Bangong-Nujiang Tethys Ocean Post-collision Tibet
DOI10.1016/j.lithos.2019.06.005
Funding OrganizationSecond Tibetan Plateau Scientific Expedition and Research (STEP) ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Program of the Chinese Academy of Sciences ; Key Program of the Chinese Academy of Sciences ; Key Program of Guangzhou City ; Key Program of Guangzhou City ; Guangzhou Institute of Geochemistry, Chinese Academy of Science (GIGCAS 135 project) ; Guangzhou Institute of Geochemistry, Chinese Academy of Science (GIGCAS 135 project) ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Program of the Chinese Academy of Sciences ; Key Program of the Chinese Academy of Sciences ; Key Program of Guangzhou City ; Key Program of Guangzhou City ; Guangzhou Institute of Geochemistry, Chinese Academy of Science (GIGCAS 135 project) ; Guangzhou Institute of Geochemistry, Chinese Academy of Science (GIGCAS 135 project) ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Program of the Chinese Academy of Sciences ; Key Program of the Chinese Academy of Sciences ; Key Program of Guangzhou City ; Key Program of Guangzhou City ; Guangzhou Institute of Geochemistry, Chinese Academy of Science (GIGCAS 135 project) ; Guangzhou Institute of Geochemistry, Chinese Academy of Science (GIGCAS 135 project) ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Program of the Chinese Academy of Sciences ; Key Program of the Chinese Academy of Sciences ; Key Program of Guangzhou City ; Key Program of Guangzhou City ; Guangzhou Institute of Geochemistry, Chinese Academy of Science (GIGCAS 135 project) ; Guangzhou Institute of Geochemistry, Chinese Academy of Science (GIGCAS 135 project)
WOS KeywordS-TYPE GRANITES ; ZIRCON U-PB ; ND ISOTOPIC CHARACTERISTICS ; BIMODAL VOLCANIC-ROCKS ; I-TYPE PLUTONISM ; A-TYPE GRANITES ; HF-O ISOTOPES ; SOUTH CHINA ; NEOPROTEROZOIC GRANITOIDS ; GEOCHEMICAL CONSTRAINTS
Language英语
Funding ProjectSecond Tibetan Plateau Scientific Expedition and Research (STEP)[2019QZKK0702] ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences[XDA2007030402] ; National Natural Science Foundation of China[41630208] ; National Natural Science Foundation of China[91855215] ; National Key R&D Program of China[2016YFC0600407] ; Key Program of the Chinese Academy of Sciences[QYZDJ-SSW-DQCO26] ; Key Program of Guangzhou City[201604910124] ; Guangzhou Institute of Geochemistry, Chinese Academy of Science (GIGCAS 135 project)[135TP201601]
Funding OrganizationSecond Tibetan Plateau Scientific Expedition and Research (STEP) ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Program of the Chinese Academy of Sciences ; Key Program of the Chinese Academy of Sciences ; Key Program of Guangzhou City ; Key Program of Guangzhou City ; Guangzhou Institute of Geochemistry, Chinese Academy of Science (GIGCAS 135 project) ; Guangzhou Institute of Geochemistry, Chinese Academy of Science (GIGCAS 135 project) ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Program of the Chinese Academy of Sciences ; Key Program of the Chinese Academy of Sciences ; Key Program of Guangzhou City ; Key Program of Guangzhou City ; Guangzhou Institute of Geochemistry, Chinese Academy of Science (GIGCAS 135 project) ; Guangzhou Institute of Geochemistry, Chinese Academy of Science (GIGCAS 135 project) ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Program of the Chinese Academy of Sciences ; Key Program of the Chinese Academy of Sciences ; Key Program of Guangzhou City ; Key Program of Guangzhou City ; Guangzhou Institute of Geochemistry, Chinese Academy of Science (GIGCAS 135 project) ; Guangzhou Institute of Geochemistry, Chinese Academy of Science (GIGCAS 135 project) ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; Second Tibetan Plateau Scientific Expedition and Research (STEP) ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Program of the Chinese Academy of Sciences ; Key Program of the Chinese Academy of Sciences ; Key Program of Guangzhou City ; Key Program of Guangzhou City ; Guangzhou Institute of Geochemistry, Chinese Academy of Science (GIGCAS 135 project) ; Guangzhou Institute of Geochemistry, Chinese Academy of Science (GIGCAS 135 project)
WOS Research AreaGeochemistry & Geophysics ; Mineralogy
WOS SubjectGeochemistry & Geophysics ; Mineralogy
WOS IDWOS:000483419900009
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/93589
Collection岩石圈演化国家重点实验室
Corresponding AuthorWang, Qiang
Affiliation1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Guangdong, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
5.Ft Hays State Univ, Dept Geosci, Hays, KS 67601 USA
Recommended Citation
GB/T 7714
Hu, Wan-Long,Wang, Qiang,Yang, Jin-Hui,et al. Late early Cretaceous peraluminous biotite granites along the Bangong-Nujiang suture zone, Central Tibet: Products derived by partial melting of metasedimentary rocks?[J]. LITHOS,2019,344:147-158.
APA Hu, Wan-Long.,Wang, Qiang.,Yang, Jin-Hui.,Zhang, Chunfu.,Tang, Gong-Jian.,...&Sun, Peng.(2019).Late early Cretaceous peraluminous biotite granites along the Bangong-Nujiang suture zone, Central Tibet: Products derived by partial melting of metasedimentary rocks?.LITHOS,344,147-158.
MLA Hu, Wan-Long,et al."Late early Cretaceous peraluminous biotite granites along the Bangong-Nujiang suture zone, Central Tibet: Products derived by partial melting of metasedimentary rocks?".LITHOS 344(2019):147-158.
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