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

doi:10.1016/j.precamres.2018.12.021

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	Metamorphic P-T path and geochronology of garnet-bearing amphibolite of the Inyoni Shear Zone, southwestern Barberton Greenstone Belt, South Africa
	Peng, Tao 1; Wang, Guo-Dong 1,2; Wang, Hao Y. C.1,3; Liu, Jia-Hui 1; Zhang, Hui C. G.1; Chen, Hong-Xu 1,4; Wu, Chun-Ming 1
刊名	PRECAMBRIAN RESEARCH
	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
DOI	10.1016/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.
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关键词	MINERAL EQUILIBRIA CALCULATIONS ; U-PB ; TERRANE SOUTH ; MOUNTAIN LAND ; CORE-COMPLEX ; LU-HF ; EVOLUTION ; CHINA ; ZIRCON ; CONSTRAINTS
WOS研究方向	Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000457657500016
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
内容类型	期刊论文
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.