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Metamorphic P-T-t path retrieved from metapelites in the southeastern Taihua metamorphic complex, and the Paleoproterozoic tectonic evolution of the southern North China Craton

文献类型：期刊论文

作者Lu, Jun-Sheng1; Zhai, Ming-Guo1; Lu, Lin-Sheng2; Wang, Hao Y. C.3; Chen, Hong-Xu3; Peng, Tao3; Wu, Chun-Ming3; Zhao, Tai-Ping4
刊名JOURNAL OF ASIAN EARTH SCIENCES
出版日期2017-02-01
卷号134页码:352-364
关键词Metapelites Metamorphic P-t Path Zircon U-pb Geochronology Biotite 40ar/39ar Dating Taihua Metamorphic Complex North China Craton
ISSN号1367-9120
DOI10.1016/j.jseaes.2016.12.001
文献子类Article
英文摘要The Taihua metamorphic complex in the southern part of the North China Craton is composed of tonalite-trondhjemite-granodiorite (TTG) gneisses, amphibolites, metapelitic gneisses, marbles, quartzites, and banded iron formations (BIFs). The protoliths of the complex have ages ranging from similar to 2.1 to similar to 2.9 Ga and was metamorphosed under the upper amphibolite to granulite facies conditions with NWW-SEE-striking gneissosity. Metapelitites from the Wugang area have three stages of metamorphic mineral assemblages. The prograde metamorphic mineral assemblage (M-1) includes biotite + plagioclase + quartz + ilmenite preserved as inclusions in garnet porphyroblasts. The peak mineral assemblage (M-2) consists of garnet porphyroblasts and matrix minerals of sillimanite + biotite + plagioclase + quartz + K-feldspar + ilmenite + rutile + pyrite. The retrograde mineral assemblage (M-3), biotite + plagioclase + quartz, occurs as symplectic assemblages surrounding embayed garnet porphyroblasts. Garnet porphyroblasts are chemically zoned. Pseudosection calculated in the NCKFMASHTO model system suggests that mantles of garnet porphyroblasts define high-pressure granulites facies P-T conditions of 12.2 kbar and 830 degrees C, whereas garnet rims record P-T conditions of 10.2 kbar and 840 degrees C. Integrating the prograde mineral assemblages, zoning of garnet porphyroblasts with symplectic assemblages, a clockwise metamorphic P-T path can be retrieved. High resolution SIMS U-Pb dating and LA-ICP-MS trace element measurements of the metamorphic zircons demonstrate that metapelites in Wugang possibly record the peak or near peak metamorphic ages of similar to 1.92 Ga. Furthermore, 40Ar/39Ar dating of biotite in metapelites suggests that the cooling of the Taihua complex may have lasted until similar to 1.83 Ga. Therefore, a long-lived Palaeoproterozoic metamorphic event may define a slow exhumation process. Field relationship and new metamorphic data for the Taihua metamorphic complex does not support the previous model in which the Tran-North China Craton (TNCO) was formed through the collision between the East and West blocks. (C) 2016 Elsevier Ltd. All rights reserved.
WOS关键词MINERAL EQUILIBRIA CALCULATIONS ; GARNET-BIOTITE GEOTHERMOMETER ; LA-ICP-MS ; U-PB ; HENAN PROVINCE ; ZIRCON AGES ; SYSTEM K2O-FEO-MGO-AL2O3-SIO2-H2O-TIO2-FE2O3 ; HENGSHAN-WUTAISHAN ; CRUSTAL ACCRETION ; GRANULITE-FACIES
WOS研究方向Geology
语种英语
WOS记录号WOS:000392767200025
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构973 program(2012CB416606) ; National Nature Science Foundation of China(41502183) ; Postdoctoral Science Foundation of China(2014M561052) ; 973 program(2012CB416606) ; National Nature Science Foundation of China(41502183) ; Postdoctoral Science Foundation of China(2014M561052) ; 973 program(2012CB416606) ; National Nature Science Foundation of China(41502183) ; Postdoctoral Science Foundation of China(2014M561052) ; 973 program(2012CB416606) ; National Nature Science Foundation of China(41502183) ; Postdoctoral Science Foundation of China(2014M561052)
源URL[http://ir.iggcas.ac.cn/handle/132A11/52920]  
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; Zhao, Tai-Ping
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, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式
GB/T 7714		 Lu, Jun-Sheng,Zhai, Ming-Guo,Lu, Lin-Sheng,et al. Metamorphic P-T-t path retrieved from metapelites in the southeastern Taihua metamorphic complex, and the Paleoproterozoic tectonic evolution of the southern North China Craton[J]. JOURNAL OF ASIAN EARTH SCIENCES,2017,134:352-364.
APA Lu, Jun-Sheng.,Zhai, Ming-Guo.,Lu, Lin-Sheng.,Wang, Hao Y. C..,Chen, Hong-Xu.,...&Zhao, Tai-Ping.(2017).Metamorphic P-T-t path retrieved from metapelites in the southeastern Taihua metamorphic complex, and the Paleoproterozoic tectonic evolution of the southern North China Craton.JOURNAL OF ASIAN EARTH SCIENCES,134,352-364.
MLA Lu, Jun-Sheng,et al."Metamorphic P-T-t path retrieved from metapelites in the southeastern Taihua metamorphic complex, and the Paleoproterozoic tectonic evolution of the southern North China Craton".JOURNAL OF ASIAN EARTH SCIENCES 134(2017):352-364.

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来源：地质与地球物理研究所

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