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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-Hui1,2,3; Kroener, Alfred4,5; Zhu, Yu-Sheng1,2; Li, Rui1,2,3
2019-08-01
Source PublicationTERRA NOVA
ISSN0954-4879
Volume31Issue:4Pages:373-380
AbstractThe 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.
DOI10.1111/ter.12397
Funding OrganizationNational 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
WOS KeywordMOUNTAIN LAND ; CORE-COMPLEX ; BELT ; ZIRCON ; GROWTH ; EXHUMATION ; EVOLUTION ; PILBARA ; CRUST
Language英语
Funding ProjectNational Natural Science Foundation of China[41490631] ; National Natural Science Foundation of China[41503026] ; National Natural Science Foundation of China[41521062]
Funding OrganizationNational 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
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000475470900007
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/92962
Collection岩石圈演化国家重点实验室
Corresponding AuthorWang, Hao
Affiliation1.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
First Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
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.
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