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Petrogenesis of Paleoproterozoic Liangcheng garnet granitoids in the Khondalite Belt, North China Craton

文献类型：期刊论文

作者Wang LuoJuan2; Guo JingHui1,3; Peng Peng1,3
刊名ACTA PETROLOGICA SINICA
出版日期2021-02-01
卷号37期号:2页码:375-390
关键词Garnet granitoid S-type granite Crustal anatexis Magma hybridization Crust-mantle interaction North China Craton
ISSN号1000-0569
DOI10.18654/1000-0569/2021.02.04
英文摘要a The voluminous garnet granitoids are distributed in the Liangcheng area of eastern Khondalite Belt, North China Craton. The Liangcheng garnet granitoids are parautochthonous granites that occur within granulite-facies metasediments, accompanied by Xuwujia gabbronorites. They are characterized by high modal proportion of garnet (5% similar to 15%, locally up to 25%) and the presence of orthopyroxene. The Liangcheng garnet granitoids were formed at high temperature (> 850 similar to 900 degrees C) and high pressure (8 similar to 10kbar), which is different from typical S -type granite. They are strongly peraluminous S -type granites (A/CNK = 1.1 similar to 1.6) with lower SiO2(55% similar to 75%) and higher MgO + FeOT (5% similar to 14%) contents than typical S -type granites. The addition of 20% similar to 40% restites (gametites) and gabbronorites to the anatectic melts could be responsible for the more mafic composition of the garnet granitoids. The Liangcheng garnet granitoids were formed at 1.93 similar to 1.92Ga, which are consistent with the emplacement of gabbronorites (1.93Ga) and the ultra -high temperature (UHT) metamorphism (1.92Ga) in the area, suggesting that garnet granitoids were produced by large-scale melting of metasedimentary rocks under UHT condition as a result of the mafic underplating. The voluminous high -temperature granitic magmas and UHT granulites reflect the UHT characteristic in the Jining-Liangcheng area.
WOS关键词LACHLAN FOLD BELT ; S-TYPE GRANITES ; HIGH TEMPERATURE METAMORPHISM ; SOUTH MOUNTAIN BATHOLITH ; SOURCE MATERIAL RESTITE ; ISOTOPIC MIXING MODEL ; U-PB ; PERITECTIC GARNET ; PHASE-EQUILIBRIA ; CARDIGAN PLUTON
WOS研究方向Geology
语种英语
WOS记录号WOS:000629649100004
出版者SCIENCE PRESS
源URL[http://ir.iggcas.ac.cn/handle/132A11/101019]  
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Wang LuoJuan
作者单位1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
2.Chinese Acad Geol Sci, Beijing 100037, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Wang LuoJuan,Guo JingHui,Peng Peng. Petrogenesis of Paleoproterozoic Liangcheng garnet granitoids in the Khondalite Belt, North China Craton[J]. ACTA PETROLOGICA SINICA,2021,37(2):375-390.
APA Wang LuoJuan,Guo JingHui,&Peng Peng.(2021).Petrogenesis of Paleoproterozoic Liangcheng garnet granitoids in the Khondalite Belt, North China Craton.ACTA PETROLOGICA SINICA,37(2),375-390.
MLA Wang LuoJuan,et al."Petrogenesis of Paleoproterozoic Liangcheng garnet granitoids in the Khondalite Belt, North China Craton".ACTA PETROLOGICA SINICA 37.2(2021):375-390.

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来源：地质与地球物理研究所

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