Crustal reworking in the North China Craton at similar to 2.5Ga: evidence from zircon U-Pb age, Hf isotope and whole rock geochemistry of the felsic volcano-sedimentary rocks from the western Shandong Province

doi:10.1002/gj.2493

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

	Crustal reworking in the North China Craton at similar to 2.5Ga: evidence from zircon U-Pb age, Hf isotope and whole rock geochemistry of the felsic volcano-sedimentary rocks from the western Shandong Province
	Wang, Wei 1,2; Zhai, Mingguo 1; Wang, Shijin 3; Santosh, M.4,5; Du, Lilin 2; Xie, Hangqiang 2; Lv, Bin 1; Wan, Yusheng 2
刊名	GEOLOGICAL JOURNAL
	2013-09-01
卷号	48 期号:5 页码:406-428
关键词	zircon SHRIMP geochronology Hf isotopes geochemistry Taishan association Neoarchaean western Shandong Province
DOI	10.1002/gj.2493
文献子类	Review
英文摘要	The western Shandong Province (WSP) is one of the typical Neoarchaean granite-greenstone belts in the Eastern Block of the North China Craton (NCC) and is an important region to investigate the early Precambrian evolutionary history of the NCC. The Taishan association, consisting of a similar to 2.7Ga komatiite-tholeiite sequence and a similar to 2.5Ga felsic volcano-sedimentary sequence, is the major lithological assemblage in the WSP. In the Qixingtai area, the felsic volcano-sedimentary sequence, partly subjected to anatexis, is composed of hornblende gneiss, voluminous fine-grained biotite gneiss and biotite plagioclase gneiss. SHRIMP zircon dating shows that the protolith of the biotite plagioclase gneiss formed after ca. 2.53Ga. The tonalite intrusion into the volcanic protoliths of the fine-grained biotite gneiss and biotite plagioclase gneiss occurred at 2.52Ga. Our age data constrain the time of formation of the felsic volcano-sedimentary sequence in the Taishan area as 2.53-2.52Ga. The majority of zircons from the felsic volcano-sedimentary rocks have intermediate epsilon(Hf)(t) values (-1.2 to +2.1). The whole rock Nd isotopes of the Taishan felsic volcano-sedimentary rocks yield the epsilon(Nd)(t=2522Ma) values of +2.6 to -1.8 and T-DM2 ages 3.03-2.68Ga. These values indicate the pre-existing crust was reworked at the end of the Neoarchaean (similar to 2.5Ga). The Taishan felsic volcano-sedimentary rocks are rhyodacite-dacite and andesite in composition. These rocks and the tonalite display similar high SiO2 (65-72wt.%) and low MgO (1-2wt.%) content. In contrast, the minor andesites in the area have lower SiO2 (61-62wt.%) and higher MgO (5.3-6.3wt.%), suggesting more mantle contribution during their petrogenesis. However, the Mg-rich andesites have identical rare earth element and multi-element patterns with the rhyodacite-dacites and distinguish them from the Taishan sanukitoids. We suggest that the 2.53-2.52Ga felsic volcanics of the Taishan association are the products of partial melting of a subducted oceanic crust. The andesites were produced by minor modification of the ascending tonalite-trondhjemite-granodiorite-type magma by the mantle wedge. Our study indicates that (1) the tectonic regime of the WSP greenstone belt was dominated by an arc-subduction system at similar to 2.52Ga and (2) the 2.53-2.52Ga felsic volcano-sedimentary rocks and intrusive tonalite are the products of crustal reworking. The felsic volcano-sedimentary sequence of the Taishan association and other similar to 2.5Ga arc-like assemblages in the NCC provide important clues to understand the nature of the tectonothermal events at the end of the Neoarchaean. Copyright (c) 2013 John Wiley & Sons, Ltd.
WOS关键词	ABITIBI GREENSTONE-BELT ; NORTHEASTERN SUPERIOR PROVINCE ; TRONDHJEMITE-GRANODIORITE TTG ; NATURAL REFERENCE MATERIAL ; LATE ARCHEAN MAGMATISM ; CONTINENTAL-CRUST ; TECTONIC EVOLUTION ; TRACE-ELEMENT ; METAMORPHIC EVENTS ; LIAONING PROVINCE
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000323844900002
资助机构	973 programme(2012CB416606) ; 973 programme(2012CB416606) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; (41030316) ; (41030316) ; 973 programme(2012CB416606) ; 973 programme(2012CB416606) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; (41030316) ; (41030316)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/62522]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
作者单位	1.Chinese Acad Sci, State Key Lab Lithospher Evolut, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Beijing SHRIMP Ctr, Beijing, Peoples R China 3.Shandong Geol Survey Inst, Jinan, Peoples R China 4.Kochi Univ, Fac Sci, Div Interdisciplinary Sci, Kochi 780, Japan 5.Chinese Acad Sci, Sch Earth Sci & Resources, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Wang, Wei,Zhai, Mingguo,Wang, Shijin,et al. Crustal reworking in the North China Craton at similar to 2.5Ga: evidence from zircon U-Pb age, Hf isotope and whole rock geochemistry of the felsic volcano-sedimentary rocks from the western Shandong Province[J]. GEOLOGICAL JOURNAL,2013,48(5):406-428.
APA	Wang, Wei.,Zhai, Mingguo.,Wang, Shijin.,Santosh, M..,Du, Lilin.,...&Wan, Yusheng.(2013).Crustal reworking in the North China Craton at similar to 2.5Ga: evidence from zircon U-Pb age, Hf isotope and whole rock geochemistry of the felsic volcano-sedimentary rocks from the western Shandong Province.GEOLOGICAL JOURNAL,48(5),406-428.
MLA	Wang, Wei,et al."Crustal reworking in the North China Craton at similar to 2.5Ga: evidence from zircon U-Pb age, Hf isotope and whole rock geochemistry of the felsic volcano-sedimentary rocks from the western Shandong Province".GEOLOGICAL JOURNAL 48.5(2013):406-428.