SHRIMP Zircon U-Pb Ages and Geochemical Characteristics of the;Neoproterozoic Granitoids in the Huangling Anticline and Its Tectonic;Setting

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	SHRIMP Zircon U-Pb Ages and Geochemical Characteristics of the;Neoproterozoic Granitoids in the Huangling Anticline and Its Tectonic;Setting
	Wei, Yunxu 5; Peng, Songbai ; Jiang, Xingfu ; Peng, Zhongqin ; Peng, Lianhong ; Li, Zhihong ; Zhou, Peng ; Zeng, Xiongwei
刊名	JOURNAL OF EARTH SCIENCE
	2012
卷号	23 期号:5 页码:659-675
关键词	Huangling anticline Yangtze plate Neoproterozoic granitoid SHRIMP zircon U-Pb dating geochemistry tectonic setting
ISSN号	015JQ
英文摘要	SHRIMP zircon U-Pb dating of the Neoproterozoic Maoping series (Sandouping (rock suite) granites exposed in the southern part of the Huangling anticline shows that the formation time of Sandouping biotite-hornblende tonalite intrusion, Jinpansi hornblende-biotite tonalite intrusion, and Longtanping monzogranite are 863 +/- 9, 842 +/- 10, and 844 +/- 10 Ma, respectively. Their geochemical features include A/CNK=0.98-1.06, from metaluminous to weakly peraluminous, delta=1.37-1.53, Sm/Nd=0.17-0.24, and Rb-N/Yb-N=1.1-3.62. These indicate that the granite rocks are supersaturated SiO2 calc-alkaline granitoids. The characteristic of Sr-Nd isotopic composition is that the values of epsilon(Nd)(t) and epsilon(Sr)(t) are -12.4 to -11.0 and 20.2-32.2, respectively. It also suggests that the material source of the granite rocks mainly originated from the crust, and they formed in a volcanic arc tectonic environment. These facts suggest that the occurrence of Neoproterozoic granitoids in the southern part of the Huangling anticline should be related to an arc environment along an active continental margin caused by southward subduction of oceanic crust beneath the northern Yangtze craton, and the formation age is not later than 863 Ma.
学科主题	火成岩岩石学
WOS关键词	SOUTH CHINA ; NORTHERN MARGIN ; YANGTZE CRATON ; RIFT MAGMATISM ; MANTLE ; PLUME ; RODINIA ; GEOCHRONOLOGY ; ROCKS ; DISCRIMINATION ; LITHOSPHERE
WOS研究方向	Geosciences, Multidisciplinary
语种	英语
出版者	This study was supported by the China Geological Survey Project (Nos.;1212010710715 and 1212011085340).
WOS记录号	WOS:000309442600003
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39472]
专题	中国地质调查局武汉地质调查中心
作者单位	1.Wuhan Ctr Geol Survey, Wuhan Inst Geol & Minerals Resources, Wuhan 430205, Peoples R China. 2.China Univ Geosci, Fac Earth Sci, Wuhan 430074, Peoples R China. 3.China Univ Geosci, Three Gorges Res Ctr Geohazard, Minist Educ, Wuhan 430074, Peoples R China. 4.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China. 5.中国地质调查局武汉地质调查中心
推荐引用方式 GB/T 7714	Wei, Yunxu,Peng, Songbai,Jiang, Xingfu,et al. SHRIMP Zircon U-Pb Ages and Geochemical Characteristics of the;Neoproterozoic Granitoids in the Huangling Anticline and Its Tectonic;Setting[J]. JOURNAL OF EARTH SCIENCE,2012,23(5):659-675.
APA	Wei, Yunxu.,Peng, Songbai.,Jiang, Xingfu.,Peng, Zhongqin.,Peng, Lianhong.,...&Zeng, Xiongwei.(2012).SHRIMP Zircon U-Pb Ages and Geochemical Characteristics of the;Neoproterozoic Granitoids in the Huangling Anticline and Its Tectonic;Setting.JOURNAL OF EARTH SCIENCE,23(5),659-675.
MLA	Wei, Yunxu,et al."SHRIMP Zircon U-Pb Ages and Geochemical Characteristics of the;Neoproterozoic Granitoids in the Huangling Anticline and Its Tectonic;Setting".JOURNAL OF EARTH SCIENCE 23.5(2012):659-675.