Neoarchean crustal evolution in western Shandong Province of the North China Craton: The role of 2.7-2.6 Ga magmatism

doi:10.1016/j.precamres.2016.09.010

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 > 中国科学院矿产资源研究重点实验室

	Neoarchean crustal evolution in western Shandong Province of the North China Craton: The role of 2.7-2.6 Ga magmatism
	Wang, Wei 1; Zhai, Ming-Guo 2; Wang, Shi-Jin 3; Santosh, M.4,5
刊名	PRECAMBRIAN RESEARCH
	2016-10-01
卷号	285 页码:170-185
关键词	Neoarchean Magmatism Crustal evolution North China Craton Western Shandong
DOI	10.1016/j.precamres.2016.09.010
文献子类	Article
英文摘要	The Neoarchean era is an important period for the formation of continental crust in the early earth. The North China Craton (NCC) records magmatism during 2.8-2.7 Ga and 2.6-2.5 Ga with the latter more extensive. However, the similar to 2.7 Ga rock assemblages are significantly different from those of the similar to 2.5 Ga rocks. Based on detailed field investigation, we present results of zircon geochronology by using SHRIMP and LA-ICP-MS techniques on the Shanggang pluton in the central belt of the western Shandong Province (WSP). The Shanggang pluton is composed of 2.71-2.69 Ga strongly deformed tonalite on the eastern and northern margins with the central part occupied by younger (2.67-2.65 Ga and 2.63-2.61 Ga) trondhjemite. Most zircon grains with apparent Pb-207/Pb-206 ages of 2.67-2.66 Ga in our samples have low Th/U ratios (0.05-0.20) resulted from low to moderate Th contents of 10-130 ppm and relatively higher U contents of 100-3000 ppm, consistent with those of anatectic zircons. Some of grains carry similar to 2.7 Ga inherited cores. Our study reveals that the crustal re-working event at 2.67-2.66 Ga might have been more widespread than currently known, although the 2.67-2.66 Ga zircons have positive epsilon(Hf)(t) values close to that of coeval depleted mantle (Wan et al., 2014). Together with data from previous studies, it is notable that more trondhjemite and even some granite were generated during 2.67-2.60 Ga. Relative to the older TTG suites (2.72-2.69 Ga), the younger ones (2.67-2.60 Ga) are dominated by trondhjemite. The compositional variations of TTG suites through the early to middle Neoarchean suggest that the 2.67-2.60 Ga magmatic and anatectic events should be related to the compositional differentiation of the Archean continental crust of the WSP. (C) 2016 Elsevier B.V. All rights reserved.
WOS关键词	HF ISOTOPE ANALYSIS ; SINGLE ZIRCON AGES ; U-PB GEOCHRONOLOGY ; LA-ICP-MS ; GREENSTONE-BELT ; ION MICROPROBE ; JUVENILE MAGMATISM ; TECTONIC EVOLUTION ; LIAONING PROVINCE ; SUPERIOR PROVINCE
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000386404500011
资助机构	National Natural Science Foundation(41430210 ; National Natural Science Foundation(41430210 ; 973 National Basic Research Program of China(2012CB416606) ; 973 National Basic Research Program of China(2012CB416606) ; Institute of Geology, CAGS(J1508) ; Institute of Geology, CAGS(J1508) ; 41302156) ; 41302156) ; National Natural Science Foundation(41430210 ; National Natural Science Foundation(41430210 ; 973 National Basic Research Program of China(2012CB416606) ; 973 National Basic Research Program of China(2012CB416606) ; Institute of Geology, CAGS(J1508) ; Institute of Geology, CAGS(J1508) ; 41302156) ; 41302156)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/53302]
专题	地质与地球物理研究所_中国科学院矿产资源研究重点实验室
作者单位	1.Chinese Acad Geol Sci, Inst Geol, 26 Baiwanzhuang Rd, Beijing 100037, Peoples R China 2.Chinese Acad Sci, Key Lab Mineral Resources, Beijing 100029, Peoples R China 3.Shandong Inst Geol Survey, 35 Jianzhuxincunnan Rd, Jinan 250013, Peoples R China 4.Univ Adelaide, Dept Earth Sci, Ctr Tecton Resources & Explorat, Adelaide, SA 5005, Australia 5.China Univ Geosci Beijing, Sch Earth Sci & Resources, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Wang, Wei,Zhai, Ming-Guo,Wang, Shi-Jin,et al. Neoarchean crustal evolution in western Shandong Province of the North China Craton: The role of 2.7-2.6 Ga magmatism[J]. PRECAMBRIAN RESEARCH,2016,285:170-185.
APA	Wang, Wei,Zhai, Ming-Guo,Wang, Shi-Jin,&Santosh, M..(2016).Neoarchean crustal evolution in western Shandong Province of the North China Craton: The role of 2.7-2.6 Ga magmatism.PRECAMBRIAN RESEARCH,285,170-185.
MLA	Wang, Wei,et al."Neoarchean crustal evolution in western Shandong Province of the North China Craton: The role of 2.7-2.6 Ga magmatism".PRECAMBRIAN RESEARCH 285(2016):170-185.