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Metamorphic P-T paths of the Zanhuang amphibolites and metapelites: constraints on the tectonic evolution of the Paleoproterozoic Trans-North China Orogen

文献类型：期刊论文

作者Xiao, Ling-Ling1; Wu, Chun-Ming1; Zhao, Guo-Chun2; Guo, Jing-Hui3; Ren, Liu-Dong4
刊名INTERNATIONAL JOURNAL OF EARTH SCIENCES
出版日期2011-06-01
卷号100期号:4页码:717-739
关键词Amphibolite Metamorphic P-T path Metapelite North China Craton Zanhuang complex
ISSN号1437-3254
DOI10.1007/s00531-010-0522-5
文献子类Article
英文摘要Garnet-bearing metapelites and amphibolites are exposed in the south and middle parts of the Zanhuang complex, which is located in the central segment of the nearly NS-striking Trans-North China Orogen. These rocks preserve three metamorphic mineral assemblages forming at the prograde, peak and post-peak decompression stages. The prograde metamorphic stage (M(1)) is represented by mineral inclusions within garnet porphyroblasts, the peak metamorphic stage (M(2)) is represented by garnet rims and matrix minerals, whereas the retrograde stage (M(3)) is represented by amphibole + plagioclase symplectite rimming garnet porphyroblasts in the amphibolites and biotite + plagioclase symplectite rimming garnet porphyroblasts in the metapelites. All garnet porphyroblasts in the metapelites preserve prograde chemical zoning except for the ubiquitous, quite narrow zones from the underwent post-peak decompression. It has been determined through thermobarometric computation that the metamorphic conditions are 650-710A degrees C at 8.2-9.2 kbar for the M(1) (inclusion) assemblages, > 810A degrees C at > 12.5 kbar for the metamorphic peak M(2) (matrix) assemblages, and 660-680A degrees C at 4.4-4.5 kbar for the retrograde M(3) (symplectite) assemblages. These rocks are thus determined to have undergone metamorphism with clockwise P-T paths involving nearly isothermal decompression (ITD) segments, which is inferred to be related to the amalgamation of the Eastern and Western Blocks to form the coherent basement of the North China Craton along the Trans-North China Orogen in the late Paleoproterozoic (1.88-1.85 Ga).
WOS关键词HIGH-PRESSURE GRANULITES ; ZIRCON GEOCHRONOLOGY ; HENGSHAN COMPLEX ; GEOTECTONIC SIGNIFICANCE ; TAIHANG MOUNTAINS ; BASEMENT ROCKS ; SANGGAN AREA ; CENTRAL ZONE ; MAFIC DIKES ; CRATON
WOS研究方向Geology
语种英语
WOS记录号WOS:000290036300002
出版者SPRINGER
资助机构National Natural Science Foundation of China(40672129 ; National Natural Science Foundation of China(40672129 ; Hong Kong RGC GRF Grants(7066/07P ; Hong Kong RGC GRF Grants(7066/07P ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; 40730315) ; 40730315) ; 7063/06P ; 7063/06P ; 7053/08P) ; 7053/08P) ; National Natural Science Foundation of China(40672129 ; National Natural Science Foundation of China(40672129 ; Hong Kong RGC GRF Grants(7066/07P ; Hong Kong RGC GRF Grants(7066/07P ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; 40730315) ; 40730315) ; 7063/06P ; 7063/06P ; 7053/08P) ; 7053/08P) ; National Natural Science Foundation of China(40672129 ; National Natural Science Foundation of China(40672129 ; Hong Kong RGC GRF Grants(7066/07P ; Hong Kong RGC GRF Grants(7066/07P ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; 40730315) ; 40730315) ; 7063/06P ; 7063/06P ; 7053/08P) ; 7053/08P) ; National Natural Science Foundation of China(40672129 ; National Natural Science Foundation of China(40672129 ; Hong Kong RGC GRF Grants(7066/07P ; Hong Kong RGC GRF Grants(7066/07P ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; 40730315) ; 40730315) ; 7063/06P ; 7063/06P ; 7053/08P) ; 7053/08P)
源URL[http://ir.iggcas.ac.cn/handle/132A11/74093]  
专题中国科学院地质与地球物理研究所
通讯作者Wu, Chun-Ming
作者单位1.Chinese Acad Sci, Grad Sch, Coll Earth Sci, Beijing 100049, Peoples R China
2.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
4.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China
推荐引用方式
GB/T 7714		 Xiao, Ling-Ling,Wu, Chun-Ming,Zhao, Guo-Chun,et al. Metamorphic P-T paths of the Zanhuang amphibolites and metapelites: constraints on the tectonic evolution of the Paleoproterozoic Trans-North China Orogen[J]. INTERNATIONAL JOURNAL OF EARTH SCIENCES,2011,100(4):717-739.
APA Xiao, Ling-Ling,Wu, Chun-Ming,Zhao, Guo-Chun,Guo, Jing-Hui,&Ren, Liu-Dong.(2011).Metamorphic P-T paths of the Zanhuang amphibolites and metapelites: constraints on the tectonic evolution of the Paleoproterozoic Trans-North China Orogen.INTERNATIONAL JOURNAL OF EARTH SCIENCES,100(4),717-739.
MLA Xiao, Ling-Ling,et al."Metamorphic P-T paths of the Zanhuang amphibolites and metapelites: constraints on the tectonic evolution of the Paleoproterozoic Trans-North China Orogen".INTERNATIONAL JOURNAL OF EARTH SCIENCES 100.4(2011):717-739.

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来源：地质与地球物理研究所

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