Geochronological and geochemical constraints on the petrogenesis of the. 2.6-2.5 Ga amphibolites, low- and high-Al TTGs in the Wangwushan area, southern North China Craton: Implications for the Neoarchean crustal evolution

doi:10.1016/j.precamres.2018.01.013

	Geochronological and geochemical constraints on the petrogenesis of the. 2.6-2.5 Ga amphibolites, low- and high-Al TTGs in the Wangwushan area, southern North China Craton: Implications for the Neoarchean crustal evolution
	Zhou, Yanyan 1; Zhao, Taiping 2; Sun, Qianying 2; Zhai, Mingguo 1,3
刊名	PRECAMBRIAN RESEARCH
	2018-04-01
卷号	307 页码:93-114
关键词	Amphibolite TTG Zircon U-Pb age Petrogenesis North China Craton
ISSN号	0301-9268
DOI	10.1016/j.precamres.2018.01.013
文献子类	Article
英文摘要	The crustal evolutionary processes of the North China Craton (NCC) during the late Neoarchean (ca. 2.6-2.5 Ga) are still under large debate. The systematic investigations of widespread ca. 2.6-2.5 Ga meta-volcanic basalts and TTG assemblages can provide a better understanding of tectonic evolution at this period. The Wangwushan Neoarchean amphibolites, high- and low-Al TTGs in southern NCC were formed at 2.57-2.52 Ga. The amphibolites are tholeiitic in composition. They have whole-rock epsilon(Nd)(t) values of -2.8 + 4.0 (T-DM1 = 3.7-2.6 Ga), and zircon epsilon(Hf)(t) values of +1.2-+7.2 (T-DM1 = 2.81-2.57 Ga), indicative of a depleted mantle source with involvement of older crustal materials. Their compositional spectrum accords with those in island-arc field, or straddles the boundary between MORB and island-arc fields, suggesting significant contributions from subduction zone-derived fluids during magma formation. The high-Al TTGs contain high Mg#, Cr and Ni contents, and (La/Yb)(N) and Sr/Y ratios, together with positive whole-rock epsilon(Nd)(t) values (-0.6- + 5.2) (T-DM2 = 2.95-2.48 Ga), indicating that they derived from partial melting of a subducted oceanic slab with older crustal materials. Their geochemical features are corresponding to 'slab-melt' identification criterion in an arc setting, and illustrate a deep source (> 45 km) with garnet amphibolite in the residue without rutile. The low-Al TTGs show low Mg# and (La/Yb)(N) ratios, negative Eu anomalies, relatively flat HREE (and Y) patterns. Their zircon epsilon(Hf)(t) (+ 2.2- + 8.8 and + 1.3- + 6.9) and whole-rock epsilon(Nd)(t) values (ca. +2.23) are positive. All the evidences support that the low-Al 'TTGs derived from a low degree partial melting of basaltic crust with the residue lack of garnet, consistent with a shallower depth (about < 30 km). It is likely that the underplated basaltic or high-Al magmas gave rise to re-melting newly formed lower crust to form the low-Al TTGs. Combined with ca. 2.52 Ga diorites and high-K granites in this area, which were formed in a subduction process and post-collisional setting, respectively, we propose that all of these igneous rocks record multi-stage processes in a convergent plate margin.
WOS关键词	U-PB AGES ; TRONDHJEMITE-GRANODIORITE TTG ; SUBDUCTION-ACCRETION COMPLEX ; UNDERPLATED BASALTIC CRUST ; GRANITE-GREENSTONE TERRANE ; EARLY CONTINENTAL-CRUST ; CENTRAL OROGENIC BELT ; SINO-KOREAN CRATON ; LIAO-JI BELT ; HF ISOTOPES
WOS研究方向	Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000427334700006
资助机构	National Natural Science Foundation of China(41572176 ; National Natural Science Foundation of China(41572176 ; National Natural Science Foundation of China(41572176 ; National Natural Science Foundation of China(41572176 ; Key Programs of National Natural Science Foundation of China(41530208) ; Key Programs of National Natural Science Foundation of China(41530208) ; Key Programs of National Natural Science Foundation of China(41530208) ; Key Programs of National Natural Science Foundation of China(41530208) ; Research Program of Chinese Academy of Sciences(81622000) ; Research Program of Chinese Academy of Sciences(81622000) ; Research Program of Chinese Academy of Sciences(81622000) ; Research Program of Chinese Academy of Sciences(81622000) ; 41573041) ; 41573041) ; 41573041) ; 41573041) ; National Natural Science Foundation of China(41572176 ; National Natural Science Foundation of China(41572176 ; National Natural Science Foundation of China(41572176 ; National Natural Science Foundation of China(41572176 ; Key Programs of National Natural Science Foundation of China(41530208) ; Key Programs of National Natural Science Foundation of China(41530208) ; Key Programs of National Natural Science Foundation of China(41530208) ; Key Programs of National Natural Science Foundation of China(41530208) ; Research Program of Chinese Academy of Sciences(81622000) ; Research Program of Chinese Academy of Sciences(81622000) ; Research Program of Chinese Academy of Sciences(81622000) ; Research Program of Chinese Academy of Sciences(81622000) ; 41573041) ; 41573041) ; 41573041) ; 41573041) ; National Natural Science Foundation of China(41572176 ; National Natural Science Foundation of China(41572176 ; National Natural Science Foundation of China(41572176 ; National Natural Science Foundation of China(41572176 ; Key Programs of National Natural Science Foundation of China(41530208) ; Key Programs of National Natural Science Foundation of China(41530208) ; Key Programs of National Natural Science Foundation of China(41530208) ; Key Programs of National Natural Science Foundation of China(41530208) ; Research Program of Chinese Academy of Sciences(81622000) ; Research Program of Chinese Academy of Sciences(81622000) ; Research Program of Chinese Academy of Sciences(81622000) ; Research Program of Chinese Academy of Sciences(81622000) ; 41573041) ; 41573041) ; 41573041) ; 41573041) ; National Natural Science Foundation of China(41572176 ; National Natural Science Foundation of China(41572176 ; National Natural Science Foundation of China(41572176 ; National Natural Science Foundation of China(41572176 ; Key Programs of National Natural Science Foundation of China(41530208) ; Key Programs of National Natural Science Foundation of China(41530208) ; Key Programs of National Natural Science Foundation of China(41530208) ; Key Programs of National Natural Science Foundation of China(41530208) ; Research Program of Chinese Academy of Sciences(81622000) ; Research Program of Chinese Academy of Sciences(81622000) ; Research Program of Chinese Academy of Sciences(81622000) ; Research Program of Chinese Academy of Sciences(81622000) ; 41573041) ; 41573041) ; 41573041) ; 41573041)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/82990]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhao, Taiping
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Guangdong, Peoples R China 3.Univ Chinese Acad Sci, Key Lab Computat Geodynam, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Yanyan,Zhao, Taiping,Sun, Qianying,et al. Geochronological and geochemical constraints on the petrogenesis of the. 2.6-2.5 Ga amphibolites, low- and high-Al TTGs in the Wangwushan area, southern North China Craton: Implications for the Neoarchean crustal evolution[J]. PRECAMBRIAN RESEARCH,2018,307:93-114.
APA	Zhou, Yanyan,Zhao, Taiping,Sun, Qianying,&Zhai, Mingguo.(2018).Geochronological and geochemical constraints on the petrogenesis of the. 2.6-2.5 Ga amphibolites, low- and high-Al TTGs in the Wangwushan area, southern North China Craton: Implications for the Neoarchean crustal evolution.PRECAMBRIAN RESEARCH,307,93-114.
MLA	Zhou, Yanyan,et al."Geochronological and geochemical constraints on the petrogenesis of the. 2.6-2.5 Ga amphibolites, low- and high-Al TTGs in the Wangwushan area, southern North China Craton: Implications for the Neoarchean crustal evolution".PRECAMBRIAN RESEARCH 307(2018):93-114.