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P-T-t evolution of Neoarchaean to Paleoproterozoic pelitic granulites from the Jidong terrane, eastern North China Craton

文献类型：期刊论文

作者Lu, Jun-Sheng1; Zhai, Ming-Guo1; Lu, Lin-Sheng2; Zhao, Lei1
刊名PRECAMBRIAN RESEARCH
出版日期2017-03-01
卷号290页码:1-15
关键词Pelitic Granulites Clockwise P-t-t Paths Zircon U-pb Dating Neoarchean Collisional Event Jidong Terrane North China Craton
ISSN号0301-9268
DOI10.1016/j.precamres.2016.12.012
文献子类Article
英文摘要Four metamorphic mineral assemblages, formed at different metamorphic stages, are identified in pelitic granulites exposed in the Jidong terrane, east Hebei Province, North China Craton (NCC). Prograde mineral assemblages (M-1) are represented by biotite, plagioclase, quartz, and ilmenite, preserved as mineral inclusions within garnet porphyroblasts. Peak mineral assemblages (M-2), which are represented by the garnet cores, rutile, pseudomorphs of sillimanite after kyanite, and some matrix minerals, formed at P-T conditions of similar to 12-13 kbar/820-850 degrees C. Post-peak mineral assemblages (M-3), which consist of the inner rims of garnets and some matrix minerals, formed at P-T conditions of similar to 11 kbar/850 degrees C. The final retrograde mineral assemblages (M-4) are mainly represented by matrix biotite without rutile exsolution, and minor matrix plagioclase with relatively high anorthite content. High-resolution secondary ion mass spectrometry (SIMS) U-Pb dating of metamorphic zircons demonstrates that the pelitic granulites possibly reached the peak metamorphic stage at similar to 2.5 Ga. Younger metamorphic ages (2.41-2.45 Ga) possibly represent the cooling ages of the granulites. Accordingly, the pelitic granulites exposed in the Jidong terrane record clockwise P-T-t paths with sequential isothermal decompression (ITD) and isobaric cooling (IBC) segments, likely caused by a subduction-collision event during the late Neoarchean to early Palaeoproterozoic in the eastern NCC. (C) 2016 Elsevier B.V. All rights reserved.
WOS关键词HIGH-PRESSURE GRANULITES ; MINERAL EQUILIBRIA CALCULATIONS ; LIAO-JI BELT ; U-PB ; METAMORPHIC EVOLUTION ; ZIRCON GEOCHRONOLOGY ; KHONDALITE BELT ; HEBEI PROVINCE ; TECTONIC EVOLUTION ; MAFIC GRANULITES
WOS研究方向Geology
语种英语
WOS记录号WOS:000394475100001
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China(41502183 ; 41210003 ; 41530208) ; National Natural Science Foundation of China(41502183 ; 41210003 ; 41530208) ; National Natural Science Foundation of China(41502183 ; 41210003 ; 41530208) ; National Natural Science Foundation of China(41502183 ; 41210003 ; 41530208)
源URL[http://ir.iggcas.ac.cn/handle/132A11/53013]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者Lu, Jun-Sheng
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Chengdu Univ Technol, Coll Earth Sci, Chengdu 610059, Sichuan, Peoples R China
推荐引用方式
GB/T 7714		 Lu, Jun-Sheng,Zhai, Ming-Guo,Lu, Lin-Sheng,et al. P-T-t evolution of Neoarchaean to Paleoproterozoic pelitic granulites from the Jidong terrane, eastern North China Craton[J]. PRECAMBRIAN RESEARCH,2017,290:1-15.
APA Lu, Jun-Sheng,Zhai, Ming-Guo,Lu, Lin-Sheng,&Zhao, Lei.(2017).P-T-t evolution of Neoarchaean to Paleoproterozoic pelitic granulites from the Jidong terrane, eastern North China Craton.PRECAMBRIAN RESEARCH,290,1-15.
MLA Lu, Jun-Sheng,et al."P-T-t evolution of Neoarchaean to Paleoproterozoic pelitic granulites from the Jidong terrane, eastern North China Craton".PRECAMBRIAN RESEARCH 290(2017):1-15.

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来源：地质与地球物理研究所

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