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Metamorphic P-T path and geochronology of garnet-bearing amphibolite of the Inyoni Shear Zone, southwestern Barberton Greenstone Belt, South Africa

文献类型：期刊论文

作者Peng, Tao1; Wang, Guo-Dong1,2; Wang, Hao Y. C.1,3; Liu, Jia-Hui1; Zhang, Hui C. G.1; Chen, Hong-Xu1,4; Wu, Chun-Ming1
刊名PRECAMBRIAN RESEARCH
出版日期2019-02-01
卷号321页码:261-276
关键词Inyoni Shear Zone Barberton Greenstone Belt Amphibolite Geothermobarometry Pseudosection modeling Geochronology
ISSN号0301-9268
DOI10.1016/j.precamres.2018.12.021
英文摘要Geothermobarometry and phase equilibria modeling were conducted for garnet-bearing amphibolite of the Inyoni Shear Zone (ISZ), southwestern Barberton Greenstone Belt, South Africa. The prograde (M1), metamorphic peak (M2) and retrograde (M3) metamorphic P-T conditions were estimated to be similar to 560 degrees C/ similar to 8 kbar, 660-730 degrees C/7-9.5 kbar and 570-630 degrees C/5-6 kbar, respectively. The amphibolite records clockwise P-T paths, and the metamorphic peak P-T conditions belong to the medium P/T facies series. The retrograde segment of the P-T path documents near isothermal decompression which may reflect relative fast exhumation. The estimated apparent geotherm is 20-30 C/km. SIMS U-Pb dating of metamorphic zircon suggests that the metamorphism of the ISZ amphibolite have occurred during similar to 3.26-3.22 Ga, and the metamorphic peak might occur at similar to 3.24 Ga. Furthermore, Ar-40/Ar-39 dating of hornblende indicates that the cooling stage might occur at similar to 3.20 Ga. It is anticipated that the protolith of the amphibolite of the ISZ may have been involved in a subduction-like tectonic process along with the TTG plutons and was metamorphosed during 3.26-3.22 Ga, then uplifted from within the surrounding TTG plutons at similar to 3.20 Ga.
WOS关键词MINERAL EQUILIBRIA CALCULATIONS ; U-PB ; TERRANE SOUTH ; MOUNTAIN LAND ; CORE-COMPLEX ; LU-HF ; EVOLUTION ; CHINA ; ZIRCON ; CONSTRAINTS
资助项目Key Research Program of Frontier Sciences from the Chinese Academy of Sciences[QYZDJ-SSW-DQC036] ; National Natural Science Foundation of China[41730215]
WOS研究方向Geology
语种英语
WOS记录号WOS:000457657500016
出版者ELSEVIER SCIENCE BV
资助机构Key Research Program of Frontier Sciences from the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences from the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences from the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences from the Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/90523]  
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Wu, Chun-Ming
作者单位1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, POB 4588, Beijing 100049, Peoples R China
2.Linyi Univ, Coll Resources & Environm, Linyi 276000, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, POB 9825, Beijing 100029, Peoples R China
4.Chinese Acad Geol Sci, SinoProbe Ctr, 26 Baiwanzhuang St, Beijing 100037, Peoples R China
推荐引用方式
GB/T 7714		 Peng, Tao,Wang, Guo-Dong,Wang, Hao Y. C.,et al. Metamorphic P-T path and geochronology of garnet-bearing amphibolite of the Inyoni Shear Zone, southwestern Barberton Greenstone Belt, South Africa[J]. PRECAMBRIAN RESEARCH,2019,321:261-276.
APA Peng, Tao.,Wang, Guo-Dong.,Wang, Hao Y. C..,Liu, Jia-Hui.,Zhang, Hui C. G..,...&Wu, Chun-Ming.(2019).Metamorphic P-T path and geochronology of garnet-bearing amphibolite of the Inyoni Shear Zone, southwestern Barberton Greenstone Belt, South Africa.PRECAMBRIAN RESEARCH,321,261-276.
MLA Peng, Tao,et al."Metamorphic P-T path and geochronology of garnet-bearing amphibolite of the Inyoni Shear Zone, southwestern Barberton Greenstone Belt, South Africa".PRECAMBRIAN RESEARCH 321(2019):261-276.

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来源：地质与地球物理研究所

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