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Clockwise P-T-t path of Paleoproterozoic metamorphism from the Dengfeng Complex, southern North China Craton

文献类型：期刊论文

作者Feng, Qiang1; Lu, Jun-Sheng1; Zhai, Ming-Guo1,2; Kong, Xu1; Liu, Gang1; Li, Yu -Ting1
刊名PRECAMBRIAN RESEARCH
出版日期2022-10-01
卷号381页码:24
关键词Metapelites Metamorphic P -T paths Zircons U-Pb geochronology Dengfeng Complex North China Craton
ISSN号0301-9268
DOI10.1016/j.precamres.2022.106846
英文摘要Garnet-bearing metapelites are widely distributed in the Dengfeng Complex situated in the southern segment of the North China Carton (NCC). Petrological studies indicate that garnet-bearing metapelites mainly comprise quartz, muscovite, chlorite, plagioclase, garnet and biotite, with minor ilmenite, zircon, and apatite. Garnet porphyroblasts show obvious growth zoning from the core to inner rim and they are separated by a prominent chemical discontinuity narrow edge. By pseudosection modeling calculations, the P-T conditions of sample 20DF17-C determined by the isopleths of XGrs and XPrp of the garnet core and inner rim are - 530 degrees C/6.7 kbar and - 560 degrees C/5.1 kbar, respectively; while the P-T conditions of sample 20DF24 determined by the isopleths of the garnet core and inner rim are - 530 degrees C/5.2 kbar and - 550 degrees C/4.5 kbar, respectively. LA-ICP-MS zircon U-Pb dating from the Dengfeng metapelites suggest that the maximum depositional age of their protoliths was - 2.52 Ga. These metapelites were affected by the hydrothermal event immediately after diagenesis. The age of - 1.92 Ga contributed to clockwise P-T paths containing decompression with slight heating segments, which occurred at the Paleoproterozoic and likely were related to a subduction-collision event in the NCC. Combined with the occurrence features of the amphibolites, TTG gneisses, metapelites and quartzites, we inferred that all the Dengfeng metapelites and Songshan Group involved a Paleoproterozoic orogenic event along the Trans-North China Orogen (TNCO)/Jinyu Mobile Belt (JMB).
WOS关键词U-PB ; TECTONIC EVOLUTION ; MAFIC GRANULITES ; GREENSTONE-BELT ; ZIRCON GROWTH ; GEOLOGICAL SIGNIFICANCE ; NEOARCHEAN MAGMATISM ; HENGSHAN COMPLEX ; PHASE-EQUILIBRIA ; LULIANG COMPLEX
资助项目National Nature Science Foundation of China ; [41890834] ; [41872195]
WOS研究方向Geology
语种英语
WOS记录号WOS:000895852900001
出版者ELSEVIER
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 ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/106967]  
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Lu, Jun-Sheng
作者单位1.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Peoples R China
2.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		 Feng, Qiang,Lu, Jun-Sheng,Zhai, Ming-Guo,et al. Clockwise P-T-t path of Paleoproterozoic metamorphism from the Dengfeng Complex, southern North China Craton[J]. PRECAMBRIAN RESEARCH,2022,381:24.
APA Feng, Qiang,Lu, Jun-Sheng,Zhai, Ming-Guo,Kong, Xu,Liu, Gang,&Li, Yu -Ting.(2022).Clockwise P-T-t path of Paleoproterozoic metamorphism from the Dengfeng Complex, southern North China Craton.PRECAMBRIAN RESEARCH,381,24.
MLA Feng, Qiang,et al."Clockwise P-T-t path of Paleoproterozoic metamorphism from the Dengfeng Complex, southern North China Craton".PRECAMBRIAN RESEARCH 381(2022):24.

入库方式： OAI收割

来源：地质与地球物理研究所

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