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The-1.87 Ga granulite facies metamorphism of the South Liaohe Group in the Jiao-Liao-Ji Belt and its tectonic implications

文献类型：期刊论文

作者Wang, Xiaohan3; Oh, Chang Whan3; Wang, Xinping2,3; Zhai, Mingguo1; Zhao, Lei1
刊名LITHOS
出版日期2021-07-01
卷号392页码:15
ISSN号0024-4937
关键词Jiao-Liao-Ji Belt South Liaohe Group Clockwise P-T path Granulite facies metamorphism Postcollisional activity
DOI10.1016/j.lithos.2021.106081
英文摘要To further understand the metamorphic evolution in the southern margin of the Jiao-Liao-Ji Belt in the Liaodong area, a detailed petrological and geochronological study was performed on representative metapelites from the South Liaohe Group. The peak metamorphic stage (M1) of the samples is represented by the mineral assemblage of garnet-biotite-plagioclase-sillimanite-quartz-magnetite in sample DD24-1 and garnet-biotite-plagioclase-ilmenite-quartz in sample DD24 & ndash;2. The post-peak metamorphic stage (M2) is indicated by the appearance of cordierite with the mineral assemblage of biotite-cordierite-garnet-plagioclase-K feldspar-sillimanite-quartzmagnetite-ilmenite in sample DD24-1. The P-T calculations using pseudosections and conventional geothermobarometry imply that the M1, M2 and final retrograde stage (M3) metamorphisms occurred at 865 & ndash;890 degrees C and 6.9 & ndash;9.2 kbar, 840 & ndash;860 degrees C and 5.3 & ndash;6.2 kbar, and 570 & ndash;670 degrees C and 3.3 & ndash;4 kbar, respectively. The zircon SHRIMP U & ndash;Pb age data show that M1 metamorphism occurred 1867 +/- 11 Ma and 1866 +/- 8 Ma for samples DD24-1 and DD24 & ndash;2, respectively. Together with previous studies, this study confirms that a low-P/T type granulite facies regional metamorphic event with a clockwise P-T path occurred in the South Liaohe and the Ji39;an groups during 1.87 & ndash;1.84 Ga. Together with the simultaneous postcollisional igneous activity in the South Liaohe and Ji39;an groups, the low-P/T type metamorphism indicates that postcollisional activity occurred in the South Liaohe and Ji39;an groups during 1.87 & ndash;1.84 Ga due to slab break off after the collision. Combined with the prevailing postcollisional activity in the Nangrim Massif on the Korean Peninsula, this study suggests that the Longgang Block in the North China Craton subducted under the Nangrim Massif on the Korean Peninsula. (c) 2021 Elsevier B.V. All rights reserved.
WOS关键词NORTH CHINA CRATON ; PRESSURE MAFIC GRANULITES ; P-T PATH ; U-PB ; EASTERN BLOCK ; PHASE-EQUILIBRIA ; METASEDIMENTARY ROCKS ; OROGENIC BELT ; DEFORMATION HISTORY ; PELITIC GRANULITES
资助项目National Research Foundation of Korea (NRF) - Korean government[NRF-2017R1A2B2011224] ; National Research Foundation of Korea (NRF) - Korean government[NRF-2017K1A1A2013180] ; Natural Natural Science Foundation of China[41890834]
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
出版者ELSEVIER
WOS记录号WOS:000680827100001
资助机构National Research Foundation of Korea (NRF) - Korean government ; National Research Foundation of Korea (NRF) - Korean government ; Natural Natural Science Foundation of China ; Natural Natural Science Foundation of China ; National Research Foundation of Korea (NRF) - Korean government ; National Research Foundation of Korea (NRF) - Korean government ; Natural Natural Science Foundation of China ; Natural Natural Science Foundation of China ; National Research Foundation of Korea (NRF) - Korean government ; National Research Foundation of Korea (NRF) - Korean government ; Natural Natural Science Foundation of China ; Natural Natural Science Foundation of China ; National Research Foundation of Korea (NRF) - Korean government ; National Research Foundation of Korea (NRF) - Korean government ; Natural Natural Science Foundation of China ; Natural Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/101916]  
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Oh, Chang Whan
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Shanxi Normal Univ, Sch Geog Sci, Linfen 041000, Shanxi, Peoples R China
3.Jeonbuk Natl Univ, Dept Earth & Environm Sci, Jeonju 54896, South Korea
推荐引用方式
GB/T 7714		 Wang, Xiaohan,Oh, Chang Whan,Wang, Xinping,et al. The-1.87 Ga granulite facies metamorphism of the South Liaohe Group in the Jiao-Liao-Ji Belt and its tectonic implications[J]. LITHOS,2021,392:15.
APA Wang, Xiaohan,Oh, Chang Whan,Wang, Xinping,Zhai, Mingguo,&Zhao, Lei.(2021).The-1.87 Ga granulite facies metamorphism of the South Liaohe Group in the Jiao-Liao-Ji Belt and its tectonic implications.LITHOS,392,15.
MLA Wang, Xiaohan,et al."The-1.87 Ga granulite facies metamorphism of the South Liaohe Group in the Jiao-Liao-Ji Belt and its tectonic implications".LITHOS 392(2021):15.

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来源：地质与地球物理研究所

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