Non-subduction origin for 3.2 Ga high-pressure metamorphic rocks in the Barberton granitoid-greenstone terrane, South Africa

doi:10.1111/ter.12397

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

	Non-subduction origin for 3.2 Ga high-pressure metamorphic rocks in the Barberton granitoid-greenstone terrane, South Africa
	Wang, Hao1,2,3 ; Yang, Jin-Hui 1,2,3; Kroener, Alfred 4,5; Zhu, Yu-Sheng 1,2; Li, Rui 1,2,3
刊名	TERRA NOVA
	2019-08-01
卷号	31 期号:4 页码:373-380
ISSN号	0954-4879
DOI	10.1111/ter.12397
英文摘要	The occurrence of high-pressure (HP) garnet-bearing metamorphic rocks in the southern Barberton granitoid-greenstone terrane (BGGT), South Africa, has been proposed as a key indicator of the onset of modern plate tectonics at ca. 3.2 Ga. Here, we report new zircon/titanite U-Pb ages of garnet-bearing HP metamorphic rocks and associated granitoids in the BGGT that argue against such an interpretation. The results show that HP metamorphism occurred synchronously with granitoid magmatism in the Stolzburg domain, the supposed subducted plate, during two episodes at 3.4 and 3.2 Ga, and that these two episodes of magmatism occurred on both sides of the assumed suture zone, a feature that cannot easily be explained by the subduction model. In contrast, the coupled magmatism and metamorphism probably resulted from partial convective overturn (PCO), another viable mechanism for production and differentiation of continental crust during early Archean.
资助项目	National Natural Science Foundation of China[41490631] ; National Natural Science Foundation of China[41503026] ; National Natural Science Foundation of China[41521062]
WOS关键词	MOUNTAIN LAND ; CORE-COMPLEX ; BELT ; ZIRCON ; GROWTH ; EXHUMATION ; EVOLUTION ; PILBARA ; CRUST
WOS研究方向	Geology
语种	英语
出版者	WILEY
WOS记录号	WOS:000475470900007
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; 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/132A11/92962]
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	Wang, Hao
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Chinese Acad Geol Sci, Beijing SHRIMP Ctr, Inst Geol, Beijing, Peoples R China 5.Johannes Gutenberg Univ Mainz, Inst Geowissensch, Mainz, Germany
推荐引用方式 GB/T 7714	Wang, Hao,Yang, Jin-Hui,Kroener, Alfred,et al. Non-subduction origin for 3.2 Ga high-pressure metamorphic rocks in the Barberton granitoid-greenstone terrane, South Africa[J]. TERRA NOVA,2019,31(4):373-380.
APA	Wang, Hao,Yang, Jin-Hui,Kroener, Alfred,Zhu, Yu-Sheng,&Li, Rui.(2019).Non-subduction origin for 3.2 Ga high-pressure metamorphic rocks in the Barberton granitoid-greenstone terrane, South Africa.TERRA NOVA,31(4),373-380.
MLA	Wang, Hao,et al."Non-subduction origin for 3.2 Ga high-pressure metamorphic rocks in the Barberton granitoid-greenstone terrane, South Africa".TERRA NOVA 31.4(2019):373-380.