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Metamorphic evolution and SIMS zircon U-Pb geochronology of mafic granulite and amphibolite enclaves of the Pingyang trondhjemitic pluton, Fuping terrane, North China
Meng, Jie1; Peng, Tao1; Liu, Jia-Hui1; Zhang, Hui C. G.1; Wang, Guo-Dong1,2; Lu, Jun-Sheng3; Chen, Hong-Xu1; Wang, Hao Y. C.1; Zhang, Qian W. L.1; Wu, Chun-Ming1
2017-12-01
发表期刊PRECAMBRIAN RESEARCH
卷号303页码:75-90
文章类型Article
摘要The discrete mafic granulite and amphibolite enclaves within the Pingyang trondhjemitic pluton, Fuping metamorphic terrane, middle Trans-North China Orogen, ubiquitously record three stages of metamorphic assemblages. For the mafic granulite enclaves, the prograde metamorphic assemblage (M1) is represented by mineral inclusions (clinopyroxene + hornblende + plagioclase + quartz +/- apatite) preserved in the garnet porphyroblast, the metamorphic peak (M2) assemblage consists of garnet and matrix minerals of clinopyroxene + orthopyroxene + hornblende + plagioclase + quartz + magnetite +/- ilmenite +/- zircon, and the retrograde (M3) stage is represented by symplectite assemblage of orthopyroxene + plagioclase +/- clinopyroxene +/- hornblende +/- quartz rimming the garnet porphyroblast. The metamorphic P-T paths of the mafic granulite enclaves are defined to pass from 560-750 degrees C/6-9 kbar (M1) through 740-880 degrees C/11-14 kbar (M2) to 720-800 degrees C/6-8 (M3), indicative of a collisional orogenic process. The metamorphic P-T path of the amphibolite enclave experienced from 670-730 degrees C/9.3-11.8 kbar to 710-730 degrees C/3.9-5.5 kbar, further certify such metamorphic feature of an orogenic belt. SIMS U-Pb dating of zircons of the trondhjemitic gneiss yields the magmatic crystallization age of similar to 2.52 Ga, and both the trondhjemitic gneiss and the mafic granulite enclaves yield the metamorphic age of similar to 1.89-1.86Ga. Therefore, it can be concluded that the Fuping terrane was involved in the late Palaeoproterozoic subduction-collision-uplifting tectonic process caused by amalgamation of the Eastern and Western Blocks of the North China Craton along the Trans-North China Orogen. (c) 2017 Elsevier B.V. All rights reserved.
关键词Enclave P-t Path Pingyang Trondhjemitic Pluton Sims U-pb Dating Trans-north China Orogen Zircon
DOI10.1016/j.precamres.2017.02.014
收录类别SCI
语种英语
WOS记录号WOS:000423004300005
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/154330
专题海洋地质与环境重点实验室
作者单位1.Univ Chinese Acad Sci, Coll Earth Sci, POB 4588, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, POB 9825, Beijing 100029, Peoples R China
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Meng, Jie,Peng, Tao,Liu, Jia-Hui,et al. Metamorphic evolution and SIMS zircon U-Pb geochronology of mafic granulite and amphibolite enclaves of the Pingyang trondhjemitic pluton, Fuping terrane, North China[J]. PRECAMBRIAN RESEARCH,2017,303:75-90.
APA Meng, Jie.,Peng, Tao.,Liu, Jia-Hui.,Zhang, Hui C. G..,Wang, Guo-Dong.,...&Wu, Chun-Ming.(2017).Metamorphic evolution and SIMS zircon U-Pb geochronology of mafic granulite and amphibolite enclaves of the Pingyang trondhjemitic pluton, Fuping terrane, North China.PRECAMBRIAN RESEARCH,303,75-90.
MLA Meng, Jie,et al."Metamorphic evolution and SIMS zircon U-Pb geochronology of mafic granulite and amphibolite enclaves of the Pingyang trondhjemitic pluton, Fuping terrane, North China".PRECAMBRIAN RESEARCH 303(2017):75-90.
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