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Mesozoic crustal growth in Mainland Southeast Asia: Zircon U-Pb and Hf isotopic evidence from the Late Cretaceous Luyingtang granitic pluton in the northernmost SE Asian granite Province, SW China
Cong, Feng1,2; Li, Wen-Chang2; Wu, Fu-Yuan1; Huang, Liang3; Huang, Xiao-Ming2; Sun, Jie2; Liu, Xiao-Chi1; Hu, Fang-Yang1; Hu, Shi-Xue2; Wu, Guang-Hui4
2020-04-01
Source PublicationJOURNAL OF ASIAN EARTH SCIENCES
ISSN1367-9120
Volume190Pages:20
AbstractThe Changning-Menglian suture in the Sanjiang region of SW China, the Chiang Rai line in Thailand, and the Bentong-Raub suture in Peninsular Malaysia are marked by remnants of the Paleo-Tethys oceanic lithosphere in Mainland Southeast Asia. We present U-Pb ages and Hf isotopic compositions of zircon from Luyingtang granites east of the Changning-Menglian suture, with the aim of identifying their sources and petrogenesis, which are significant for understanding the crustal evolution of the Mainland Southeast Asia. The Luyingtang granitic pluton is located in the northernmost SE Asian granite Province, SW China. New zircon U-Pb ages indicate that the granites were emplaced in the Late Cretaceous, in accordance with the regional scale inland magmatic event in Mainland Southeast Asia. Petrographically, the samples range from granodiorite, biotite granite, two-mica granite to pegmatite. The biotite granite, two-mica granite and pegmatite have low contents of TiO2, Al2O3, FeO*, MgO, CaO and P2O5, but high values of SiO2 and K2O, compared to the granodiorite. The granodiorite, biotite granite and two-mica granite invariably show enrichment in light rare earth elements (LREE). The biotite granite and two-mica granite show negative Eu anomalies, but the granodiorite displays weak Eu anomaly. The pegmatites show a clear tetrad effect and contain pronounced negative Eu anomalies. All the rocks demonstrate characteristic negative Nb, Ta, Sr and Ti anomalies, and a positive Pb anomaly, when plotted on spidergrams. Most of the granites are characterized by positive epsilon(Hf)(t) values (0.3-8) and fairly young T-DM2 ages (612-1094 Ma), suggesting they contain a significant proportion of juvenile component. Hf isotopic modelling shows that the Luyingtang granites are likely to have been produced by partial melting of mixed sources, which were probably of basalts in proportions of 50-70% and Precambrian continental crust. The emplacement of granites with such a large proportion of mantle-derived component indicates crustal growth in Mainland Southeast Asia during Mesozoic. In contrast, one of the two-mica granite samples displays negative Cm (t) values (-7.6 to -3) and older T-DM2 ages (1305-1599 Ma), which suggest a more crustal affinity. The arc-continent collision during the Cretaceous may have induced foundering of an over-thickened lithospheric mantle keel beneath the Paleo-Tethys orogenic belt, and then resulted to localized upwelling of asthenosphere mantle and basaltic underplating. The parental magmas of the hinterland I-type granites formed by melting of a mixed source, containing both Precambrian crust and mantle-derived basalt, followed by extensive magmatic differentiation.
KeywordLate cretaceous Granites Zircon U-Pb ages Hf isotopic compositions Crustal growth Mainland Southeast Asia
DOI10.1016/j.jseaes.2019.104151
Funding OrganizationNational Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program
WOS KeywordA-TYPE GRANITES ; I-TYPE GRANITES ; TECTONIC EVOLUTION ; LANCANGJIANG ZONE ; WESTERN YUNNAN ; LU-HF ; PETROGENESIS ; CONSTRAINTS ; THAILAND ; AGE
Language英语
Funding ProjectNational Nature Science Foundation of China[41602044] ; China Geological Survey[DD20190053] ; China Geological Survey[DD20179386] ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program[2019QZKK0704]
Funding OrganizationNational Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Second Tibetan Plateau Scientific Expedition and Research (STEP) program
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000517662800010
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95649
Collection岩石圈演化国家重点实验室
Corresponding AuthorCong, Feng
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithosphere Evolut, Beijing 100029, Peoples R China
2.Chengdu Ctr China Geol Survey, Chengdu 610081, Peoples R China
3.Yunnan Inst Geol Survey, Kunming 650216, Yunnan, Peoples R China
4.Univ Sci & Technol China, Sch Earth & Space Sci, Key Lab Crust Mantle Mat & Environm, Hefei, Peoples R China
First Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Cong, Feng,Li, Wen-Chang,Wu, Fu-Yuan,et al. Mesozoic crustal growth in Mainland Southeast Asia: Zircon U-Pb and Hf isotopic evidence from the Late Cretaceous Luyingtang granitic pluton in the northernmost SE Asian granite Province, SW China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2020,190:20.
APA Cong, Feng.,Li, Wen-Chang.,Wu, Fu-Yuan.,Huang, Liang.,Huang, Xiao-Ming.,...&Wu, Guang-Hui.(2020).Mesozoic crustal growth in Mainland Southeast Asia: Zircon U-Pb and Hf isotopic evidence from the Late Cretaceous Luyingtang granitic pluton in the northernmost SE Asian granite Province, SW China.JOURNAL OF ASIAN EARTH SCIENCES,190,20.
MLA Cong, Feng,et al."Mesozoic crustal growth in Mainland Southeast Asia: Zircon U-Pb and Hf isotopic evidence from the Late Cretaceous Luyingtang granitic pluton in the northernmost SE Asian granite Province, SW China".JOURNAL OF ASIAN EARTH SCIENCES 190(2020):20.
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