Origin of a Mesozoic granite with A-type characteristics from the North China craton: highly fractionated from I-type magmas?

doi:10.1007/s00410-008-0373-2

	Origin of a Mesozoic granite with A-type characteristics from the North China craton: highly fractionated from I-type magmas?
	Jiang, Neng 1; Zhang, Shuangquan 2; Zhou, Wenge 3; Liu, Yongsheng 4
刊名	CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
	2009-07-01
卷号	158 期号:1 页码:113-130
关键词	Fractionation I-type granite A-type granite North China craton Lower crustal xenoliths
ISSN号	0010-7999
DOI	10.1007/s00410-008-0373-2
文献子类	Article
英文摘要	We report geochronological, geochemical and isotopic data for the Mesozoic Shangshuiquan granite from the northern margin of the North China craton. The granite is highly fractionated, with SiO(2) > 74%. Occurrence of annitic biotite, high contents of alkalis (K(2)O + Na(2)O), Rb, Y, Nb and heavy rare earth elements, high FeO(t)/MgO, low contents of CaO, Al(2)O(3), Ba, and Sr, and large negative Eu anomalies, makes it indistinguishable from typical A-type granites. A mantle-derived origin for the rocks of the granite is not favored because their high initial (87)Sr/(86)Sr (a parts per thousand yen0.706) and low epsilon(Nd) (t) (<-15) are completely different from either those of the lithospheric or asthenospheric mantle. In fact, their Sr-Nd isotopes fall within the range of Sr-Nd isotopic compositions of the Archean granulite terrains and are comparable to those of Mesozoic crustal-derived I-type granitoids in the region. Therefore, the Shangshuiquan granite is considered to be dominantly derived from partial melting of the ancient lower crust. Its parental magmas prove to be similar to I-type magmas and to have undergone extensive fractionation during its ascent. This is supported by the fact that some of the nearby Hannuoba feldspar-rich granulite xenoliths can be indeed regarded as the early cumulates in terms of their mineralogy, chemistry, Sr-Nd isotopes and zircon U-Pb ages and Hf isotopes. It is furthermore argued that some of highly fractionated granites worldwide, especially those with A-type characteristics and lacking close relationship with unfractionated rocks, may in fact be fractionated I-type granites. This suggestion can explain their close temporal and spatial associations as well as similar Sr-Nd isotopes with I-type granites. Our study also sheds new light on the petrogenesis of deep crustal xenoliths.
WOS关键词	SINO-KOREAN CRATON ; MANTLE INTERACTION BENEATH ; LOWER CRUSTAL XENOLITHS ; LACHLAN FOLD BELT ; U-PB AGE ; CONTINENTAL-CRUST ; TRACE-ELEMENT ; SOUTHEASTERN AUSTRALIA ; ISOTOPIC COMPOSITIONS ; GRANULITE XENOLITHS
WOS研究方向	Geochemistry & Geophysics ; Mineralogy
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000266079500007
资助机构	Ministry of Science and Technology, China(2006CB403504) ; Ministry of Science and Technology, China(2006CB403504) ; National Natural Science Foundation of China(40773024) ; National Natural Science Foundation of China(40773024) ; Ministry of Science and Technology, China(2006CB403504) ; Ministry of Science and Technology, China(2006CB403504) ; National Natural Science Foundation of China(40773024) ; National Natural Science Foundation of China(40773024) ; Ministry of Science and Technology, China(2006CB403504) ; Ministry of Science and Technology, China(2006CB403504) ; National Natural Science Foundation of China(40773024) ; National Natural Science Foundation of China(40773024) ; Ministry of Science and Technology, China(2006CB403504) ; Ministry of Science and Technology, China(2006CB403504) ; National Natural Science Foundation of China(40773024) ; National Natural Science Foundation of China(40773024)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/70287]
专题	中国科学院地质与地球物理研究所
通讯作者	Jiang, Neng
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing, Peoples R China 2.Univ Windsor, Dept Chem & Biochem, Windsor, ON N9B 3P4, Canada 3.Chinese Acad Sci, Inst Geochem, Guiyang, Peoples R China 4.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Neng,Zhang, Shuangquan,Zhou, Wenge,et al. Origin of a Mesozoic granite with A-type characteristics from the North China craton: highly fractionated from I-type magmas?[J]. CONTRIBUTIONS TO MINERALOGY AND PETROLOGY,2009,158(1):113-130.
APA	Jiang, Neng,Zhang, Shuangquan,Zhou, Wenge,&Liu, Yongsheng.(2009).Origin of a Mesozoic granite with A-type characteristics from the North China craton: highly fractionated from I-type magmas?.CONTRIBUTIONS TO MINERALOGY AND PETROLOGY,158(1),113-130.
MLA	Jiang, Neng,et al."Origin of a Mesozoic granite with A-type characteristics from the North China craton: highly fractionated from I-type magmas?".CONTRIBUTIONS TO MINERALOGY AND PETROLOGY 158.1(2009):113-130.