Zircon LA-ICP-MS U-Pb dating and Lu-Hf isotopic system of Dongjiangkou, Zhashui, and Liyuantang granitoid intrusions, South Qinling belt, central China

	Zircon LA-ICP-MS U-Pb dating and Lu-Hf isotopic system of Dongjiangkou, Zhashui, and Liyuantang granitoid intrusions, South Qinling belt, central China
	Liu ChunHua 2; Wu CaiLai ; Gao YuanHong ; Lei Min ; Qin HaiPeng ; Li MingZe
刊名	ACTA PETROLOGICA SINICA
	2014
卷号	30 期号:8 页码:2402-2420
关键词	Granitoids Zircon U-Pb dating Lu-Hf isotopic system Dongjiangkou Zhashui Liyuantang Qinling
ISSN号	1000-0569
英文摘要	The Dongjiangkou, Zhashui, and Liyuantang granitoid intrusions occur near the Shang-Dan fault. Zircon U-Pb dating yielded the following crystallization ages: 246.8 +/- 2.5Ma for the Dongjiangkou granodiorite, 233.6 +/- 1.3Ma for the Zhashui granite, 956.1 +/- 4.5Ma for the Liyuantang quartz monzonite, and 203.6 +/- 2.2Ma for the Liyuantang granite. The accompanied zircon in situ Lu-Hf isotopic analysis gave two-stage Hf model ages (t(DM2)) of 1.4 similar to 1.6Ga, 1.0 similar to 1.3Ga, 1.0 similar to 1.3Ga, and 1.0 similar to 1.3Ga for these granitoids respectively. The closure of the Mian-Lue Ocean at about 250Ma was followed by the collision of the Yangtze Craton and North China Craton resulted in the formation of the Qirding orogenic belt, meanwhile, partial melting of crustal rocks took place during the subduction of the Yangtze plate and South Qinling massif and genrated the Early-Middle Triassic granitoids at 246.8 similar to 233.6Ma. Subsequently, at about 220Ma, the "Yangtze" slab was detached and induced upwelling of the asthenosphere. Widespread partial melting of the subducted continental crust and the upper lithosphere mantle produced adakitic and associated mafic inclusions in Late Triassic (199.0 similar to 224.8Ma).
学科主题	火成岩岩石学
WOS关键词	GEOLOGICAL SIGNIFICANCE ; AGES ; GEOCHEMISTRY ; ENCLAVES ; ELEMENTS ; PLUTONS ; ORIGIN ; NORTH ; NB/TA ; CRUST
WOS研究方向	Geology
语种	中文
出版者	SCIENCE PRESS
WOS记录号	WOS:000340023300021
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40588]
专题	中国地质科学院地质研究所
作者单位	1.Chinese Acad Geol Sci, Inst Geol, State Key Lab Continental Tecton & Dynam, Beijing 100037, Peoples R China 2.中国地质科学院地质研究所
推荐引用方式 GB/T 7714	Liu ChunHua,Wu CaiLai,Gao YuanHong,et al. Zircon LA-ICP-MS U-Pb dating and Lu-Hf isotopic system of Dongjiangkou, Zhashui, and Liyuantang granitoid intrusions, South Qinling belt, central China[J]. ACTA PETROLOGICA SINICA,2014,30(8):2402-2420.
APA	Liu ChunHua,Wu CaiLai,Gao YuanHong,Lei Min,Qin HaiPeng,&Li MingZe.(2014).Zircon LA-ICP-MS U-Pb dating and Lu-Hf isotopic system of Dongjiangkou, Zhashui, and Liyuantang granitoid intrusions, South Qinling belt, central China.ACTA PETROLOGICA SINICA,30(8),2402-2420.
MLA	Liu ChunHua,et al."Zircon LA-ICP-MS U-Pb dating and Lu-Hf isotopic system of Dongjiangkou, Zhashui, and Liyuantang granitoid intrusions, South Qinling belt, central China".ACTA PETROLOGICA SINICA 30.8(2014):2402-2420.