中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Petrogenesis of the Late Triassic Mengsong strongly peraluminous granites in the southeastern Tibetan Plateau: highly fractionated from crystal mush

文献类型:期刊论文

作者Cong, Feng1,3; Wu, Fu-Yuan3; Li, Wen-Chang1; He, De-Feng2; Sun, Zai-Bo4; Huang, Xiao-Ming1; Hu, Zhi-Zhong1; Zhao, Han3
刊名INTERNATIONAL GEOLOGY REVIEW
出版日期2020-11-03
页码18
ISSN号0020-6814
关键词Mengsong pluton Lincang batholith strongly peraluminous petrogenesis crystal mush post-collisional
DOI10.1080/00206814.2020.1839975
英文摘要The Triassic Lincang granites make up the largest peraluminous granitic batholith in the Changning-Menglian Paleo-Tethys orogenic belt, southeastern Tibetan Plateau. It is undoubtedly very important to investigate the role of crustal magmatism in the evolution of the Changning-Menglian Paleo-Tethys orogenic belt. The Late Triassic Mengsong pluton is composed of strongly peraluminous two-mica monzogranites, and is located in the southernmost part of the Lincang batholith. Despite all being peraluminous granites, they differ markedly in dimensions, petrographic and geochemical characteristics. Mengsong two-mica monzogranites have low contents of TiO2, FeOtot, MgO, and CaO, but high values of SiO2 and Na2O, compared to biotite monzogranites of the Lincang batholith. The Lincang biotite monzogranites show an enrichment in light rare earth elements (LREE) and weak Eu anomalies (delta Eu = 0.3-0.8). However, the Mengsong two-mica monzogranites show a clear tetrad effect and contain pronounced negative Eu anomalies (delta Eu = 0.1-0.3). Geochemical compositions and mineral textures of two-mica monzogranites indicate that they are of highly fractionated type affinity. The two-mica monzogranites are characterized by negative epsilon(Hf) (t) values (-9.3 to -1.7) and epsilon(Nd) (t) values (-9.6 to -7.9), while the biotite monzogranites have lower epsilon(Hf) (t) values (-15.5 to -6.1) and epsilon(Nd) (t) values (-14.5 to -11.5). Isotopic compositions suggest that they were cogenetic and derived from partial melting of the lower crust. Our petrogenetic and zircon U-Pb age data support models that relate the Lincang and Mengsong granites to post-collisional magmatism in the Changning-Menglian Paleo-Tethys orogenic belt during the Middle to Late Triassic. We interpret the Mengsong pluton to represent highly fractionated melts from crystal mush reservoirs and the Lincang granites to be complementary residual.
WOS关键词A-TYPE GRANITES ; U-PB ; ISOTOPIC COMPOSITION ; TECTONIC EVOLUTION ; MAGMA RESERVOIRS ; LU-HF ; ORIGIN ; CHINA ; GENERATION ; INSIGHTS
资助项目National Nature Science Foundation of China[41888101] ; Science and Technology Foundation of Guizhou Province[[2011]2360] ; China Geological Survey[DD20190053]
WOS研究方向Geology
语种英语
出版者TAYLOR & FRANCIS INC
WOS记录号WOS:000583410900001
资助机构National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Science and Technology Foundation of Guizhou Province ; Science and Technology Foundation of Guizhou Province ; Science and Technology Foundation of Guizhou Province ; Science and Technology Foundation of Guizhou Province ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Science and Technology Foundation of Guizhou Province ; Science and Technology Foundation of Guizhou Province ; Science and Technology Foundation of Guizhou Province ; Science and Technology Foundation of Guizhou Province ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Science and Technology Foundation of Guizhou Province ; Science and Technology Foundation of Guizhou Province ; Science and Technology Foundation of Guizhou Province ; Science and Technology Foundation of Guizhou Province ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; Science and Technology Foundation of Guizhou Province ; Science and Technology Foundation of Guizhou Province ; Science and Technology Foundation of Guizhou Province ; Science and Technology Foundation of Guizhou Province ; China Geological Survey ; China Geological Survey ; China Geological Survey ; China Geological Survey
源URL[http://ir.iggcas.ac.cn/handle/132A11/98219]  
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Cong, Feng
作者单位1.Chengdu Ctr China Geol Survey, Chengdu, Peoples R China
2.Chinese Acad Sci, Inst Geochem, Guiyang, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
4.Yunnan Inst Geol Survey, Kunming, Yunnan, Peoples R China
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Cong, Feng,Wu, Fu-Yuan,Li, Wen-Chang,et al. Petrogenesis of the Late Triassic Mengsong strongly peraluminous granites in the southeastern Tibetan Plateau: highly fractionated from crystal mush[J]. INTERNATIONAL GEOLOGY REVIEW,2020:18.
APA Cong, Feng.,Wu, Fu-Yuan.,Li, Wen-Chang.,He, De-Feng.,Sun, Zai-Bo.,...&Zhao, Han.(2020).Petrogenesis of the Late Triassic Mengsong strongly peraluminous granites in the southeastern Tibetan Plateau: highly fractionated from crystal mush.INTERNATIONAL GEOLOGY REVIEW,18.
MLA Cong, Feng,et al."Petrogenesis of the Late Triassic Mengsong strongly peraluminous granites in the southeastern Tibetan Plateau: highly fractionated from crystal mush".INTERNATIONAL GEOLOGY REVIEW (2020):18.

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来源:地质与地球物理研究所

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