Petrogenesis of typical Mesozoic and Cenozoic volcanic rocks from the North China Craton: new evidence from Hf isotopic studies

	Petrogenesis of typical Mesozoic and Cenozoic volcanic rocks from the North China Craton: new evidence from Hf isotopic studies
	Yang YueHeng ; Zhang HongFu ; Xie LieWen ; Liu Ying ; Qi ChangShi ; Tu XiangLin
刊名	ACTA PETROLOGICA SINICA
	2006-06-01
卷号	22 期号:6 页码:1665-1671
关键词	Hf isotope Mesozoic Cenozoic volcanic rocks petrogenesis
ISSN号	1000-0569
文献子类	Article
英文摘要	High precision Hf isotopic data are firstly reported for the typical Mesozoic and Cenozoic volcanic rocks (alkaline basalts, tholeiites. and high-Mg andesites) from the North China Craton in this paper. The results show that these Mesozoic and Cenozoic volcanic rocks have completely different Hf isotopic compositions with a large range in epsilon(Hf) (t) values (-18.4 similar to 9. 6) with an excellently positive correlation between Hf and Nd isotopes. Among them, the Cenozoic Changle-Linqu and Late Cretaceous Jianguo (similar to 105 Ma) alkaline basalts possess very high Hf and Nd isotopic compositions (epsilon(Hf) (t) = 6.8 similar to 9.6; epsilon(Nd) (t) = 0.4 similar to 4. 9), indicating their derivation from the undifferentiated asthenospheric source. Early Cretaceous Fangcheng (125Ma) alkaline basalts and tholeiites have extremely low Hf and Nd isotopic ratios (epsilon(Hf)(t) = -15.6 similar to -18.4; epsilon(Nd) (t) = -12.8 similar to -14.4), representing their origination from an enriched sub-continental lithospheric mantle. Wulahada (142Ma) high-Mg andesites show relatively lower Hf and Nd isotopic ratios (epsilon(Hf)(t) = -2.1 similar to -2.6), implying a derivation from old refractory lithospheric mantle contaminated with melt fulid released from subducted crustal materials. Relatively larger variations in Hf isotopic compositions of basalts (epsilon(Hf) (t)/epsilon(Nd) (t) > 1 demonstrate that the Hf isotopes could be better tracer of mantle sources than the Nd isotopes.
WOS关键词	LITHOSPHERIC MANTLE ; CHEMICAL-SEPARATION ; TECTONIC EVOLUTION ; LU-HF ; ND ; BASALTS ; BENEATH ; ICPMS ; SM
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000239220800023
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/67038]
专题	中国科学院地质与地球物理研究所
通讯作者	Yang YueHeng
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Isotope Geochronol & Geochem, Guangzhou 510640, Peoples R China
推荐引用方式 GB/T 7714	Yang YueHeng,Zhang HongFu,Xie LieWen,et al. Petrogenesis of typical Mesozoic and Cenozoic volcanic rocks from the North China Craton: new evidence from Hf isotopic studies[J]. ACTA PETROLOGICA SINICA,2006,22(6):1665-1671.
APA	Yang YueHeng,Zhang HongFu,Xie LieWen,Liu Ying,Qi ChangShi,&Tu XiangLin.(2006).Petrogenesis of typical Mesozoic and Cenozoic volcanic rocks from the North China Craton: new evidence from Hf isotopic studies.ACTA PETROLOGICA SINICA,22(6),1665-1671.
MLA	Yang YueHeng,et al."Petrogenesis of typical Mesozoic and Cenozoic volcanic rocks from the North China Craton: new evidence from Hf isotopic studies".ACTA PETROLOGICA SINICA 22.6(2006):1665-1671.