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Generation of early Archaean grey gneisses through melting of older crust in the eastern Kaapvaal craton, southern Africa

文献类型：期刊论文

作者Kroener, Alfred1,2; Hoffmann, J. Elis3; Xie, Hangqiang1; Munker, Carsten3; Hegner, Ernst4,5; Wan, Yusheng1; Hofmann, Axel6; Liu, Dunyi1; Yang, Jinhui7
刊名PRECAMBRIAN RESEARCH
出版日期2014-12-01
卷号255页码:823-846
关键词Grey gneiss Palaeoarchaean Kaapvaal craton Hf-Nd isotopes Zircon age Swaziland
ISSN号0301-9268
DOI10.1016/j.precamres.2014.07.017
文献子类Article
英文摘要We report zircon ages, Hf-in-zircon isotopes as well as whole-rock geochemistry and Hf-Nd isotopic systematics for Palaeoarchaean grey gneisses of the Ancient Gneiss Complex of Swaziland, the oldest components of the Kaapvaal craton, southern Africa. The Hf-in-zircon isotopic compositions in these compositionally heterogeneous, multicomponent, migmatitic gneisses are highly variable, even in the oldest zircons dating back to 3.66 Ga, suggesting growth of zircon from melts representing a mix of juvenile and anatectic material derived from differentiated continental crust of Eoarchean to late Hadean age. In contrast, the initial Nd and Hf whole-rock isotopic compositions are frequently not in agreement with the Hf-in-zircon data that mostly show approximately chondritic initial values for Nd and strongly radiogenic initial values for Hf. We consider it likely that both the Lu-Hf and Sm-Nd whole-rock isotopic systems were disturbed and partly reset during later episodes of partial melting and crustal reworking, most likely during a pervasive 3.2 Ga tectono-metamorphic event.
WOS关键词BARBERTON GREENSTONE-BELT ; TRONDHJEMITE-GRANODIORITE TTG ; EARLY EARTH DIFFERENTIATION ; HAFNIUM ISOTOPE EVIDENCE ; JACK HILLS ZIRCONS ; CONTINENTAL-CRUST ; WEST GREENLAND ; LU-HF ; U-PB ; NORTHWESTERN CANADA
WOS研究方向Geology
语种英语
WOS记录号WOS:000347660600005
出版者ELSEVIER SCIENCE BV
资助机构Deutsche Forschungsgemeinschaft (DFG)(KR590/94-1 ; Deutsche Forschungsgemeinschaft (DFG)(KR590/94-1 ; National Natural Science Foundation of China(41221002) ; National Natural Science Foundation of China(41221002) ; H04794/1-1) ; H04794/1-1) ; Deutsche Forschungsgemeinschaft (DFG)(KR590/94-1 ; Deutsche Forschungsgemeinschaft (DFG)(KR590/94-1 ; National Natural Science Foundation of China(41221002) ; National Natural Science Foundation of China(41221002) ; H04794/1-1) ; H04794/1-1) ; Deutsche Forschungsgemeinschaft (DFG)(KR590/94-1 ; Deutsche Forschungsgemeinschaft (DFG)(KR590/94-1 ; National Natural Science Foundation of China(41221002) ; National Natural Science Foundation of China(41221002) ; H04794/1-1) ; H04794/1-1) ; Deutsche Forschungsgemeinschaft (DFG)(KR590/94-1 ; Deutsche Forschungsgemeinschaft (DFG)(KR590/94-1 ; National Natural Science Foundation of China(41221002) ; National Natural Science Foundation of China(41221002) ; H04794/1-1) ; H04794/1-1)
源URL[http://ir.iggcas.ac.cn/handle/132A11/86594]  
专题中国科学院地质与地球物理研究所
通讯作者Kroener, Alfred
作者单位1.Chinese Acad Geol Sci, Beijing SHRIMP Ctr, Inst Geol, Beijing 100037, Peoples R China
2.Johannes Gutenberg Univ Mainz, Inst Geowissensch, D-55099 Mainz, Germany
3.Univ Cologne, Inst Geol & Mineral, D-50674 Cologne, Germany
4.Univ Munich, Dept Geo & Umweltwissensch, D-80333 Munich, Germany
5.Univ Munich, GeoBioctr LMU, D-80333 Munich, Germany
6.Univ Johannesburg, Dept Geol, Johannesburg, South Africa
7.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Kroener, Alfred,Hoffmann, J. Elis,Xie, Hangqiang,et al. Generation of early Archaean grey gneisses through melting of older crust in the eastern Kaapvaal craton, southern Africa[J]. PRECAMBRIAN RESEARCH,2014,255:823-846.
APA Kroener, Alfred.,Hoffmann, J. Elis.,Xie, Hangqiang.,Munker, Carsten.,Hegner, Ernst.,...&Yang, Jinhui.(2014).Generation of early Archaean grey gneisses through melting of older crust in the eastern Kaapvaal craton, southern Africa.PRECAMBRIAN RESEARCH,255,823-846.
MLA Kroener, Alfred,et al."Generation of early Archaean grey gneisses through melting of older crust in the eastern Kaapvaal craton, southern Africa".PRECAMBRIAN RESEARCH 255(2014):823-846.

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来源：地质与地球物理研究所

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