Zircon U-Pb dating, geochemistry and geological significance of the I type granites in Helong area, the eastern section of the southern margin of Xing-Meng Orogenic Belt.

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	Zircon U-Pb dating, geochemistry and geological significance of the I type granites in Helong area, the eastern section of the southern margin of Xing-Meng Orogenic Belt.
其他题名	Zircon U-Pb dating,geochemistry and geological significance of the I-type granites in Helong area,the eastern section of the southern margin of Xing-Meng Orogenic Belt
	Guan QingBin 1; Li ShiChao 1; Zhang Chao 2; Shi Yi 3; Li PengChuan 1
	2016
发表期刊	ACTA PETROLOGICA SINICA
ISSN	1000-0569
卷号	32 期号:9 页码:2690-2706
摘要	Petrography, geochemical data, LA-ICP-MS zircon U-Pb dating and Sr-Nd isotopic have been obtained from Bajiazi pluton and Yongxin pluton in Helong area, with the aim of constraining the tectonic nature of the eastern section of the southern margin of Xing-Meng Orogenic Belt. LA-ICP-MS zircon U-Pb age data indicate that the quartz diorites from Bajiazi pluton formed during the early period of Late Permian and monzogranites from Yongxin pluton formed during Middle Triassic. Furthermore, Bajiazi quartz diorites belong to calc-alkaline, metaluminous I-type granitoids with feature of Na2O content is higher than K2O. They also show strong enrichment in LREEs and LILEs (Cs, Ba, K and Sr), depletions in HREEs and HFSEs (Nb, Ta and P). Combined the Sr-Nd isotopic data indicate the primary magma for Bajiazi pluton could be mainly derived from partical melting of the mafic lower crust under the tectonic setting of subduction. The Yongxin monzogranites belong to high-K calc-alkaline, metaluminous-weakly peraluminous I type granitoids with features of rich in SiO2, Al2O, and K2O. They also show strong enrichment in LREEs and LILEs (Cs, K and Sr), depletions in HREEs and HFSEs (Nb, Ta, Ti and P). Combined the Sr-Nd isotopic data indicate the primary magma for Bajiazi pluton could be mainly derived from partical melting of the mafic lower crust under the tectonic setting of syn-collision. The emplacement timing of Bajiazi pluton and Yongxin pluton reflect the Paleo-Asian oceanic plate had been subducting beneath the eastern section of the northern margin of the North China Plate during the early period of Late Permian, and the collision between North China Plate and Khanka Massif took place at the Middle Triassic, which suggests that the Paleo-Asian Ocean closed is between the end of Late Permian and Early Triassic.
关键词	PERMIAN TECTONIC EVOLUTION ND-HF ISOTOPES VOLCANIC-ROCKS NORTH CHINA JILIN PROVINCE CALC-ALKALINE NE CHINA GEOCHRONOLOGY PETROGENESIS CONSTRAINTS Southern margin of Xing-Meng Orogenic Belt I-type granites Zircon U-Pb dating Geochemistry The Paleo-Asian Ocean
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:5789773
引用统计	被引频次：14[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/142176
专题	中国科学院金属研究所
作者单位	1.吉林大学 2.山东大学 3.中国科学院金属研究所
推荐引用方式 GB/T 7714	Guan QingBin,Li ShiChao,Zhang Chao,et al. Zircon U-Pb dating, geochemistry and geological significance of the I type granites in Helong area, the eastern section of the southern margin of Xing-Meng Orogenic Belt.[J]. ACTA PETROLOGICA SINICA,2016,32(9):2690-2706.
APA	Guan QingBin,Li ShiChao,Zhang Chao,Shi Yi,&Li PengChuan.(2016).Zircon U-Pb dating, geochemistry and geological significance of the I type granites in Helong area, the eastern section of the southern margin of Xing-Meng Orogenic Belt..ACTA PETROLOGICA SINICA,32(9),2690-2706.
MLA	Guan QingBin,et al."Zircon U-Pb dating, geochemistry and geological significance of the I type granites in Helong area, the eastern section of the southern margin of Xing-Meng Orogenic Belt.".ACTA PETROLOGICA SINICA 32.9(2016):2690-2706.