Comparative Sr-Nd-Hf-Os-Pb isotope systematics of xenolithic peridotites from Yangyuan, North China Craton: Additional evidence for a Paleoproterozoic age
文献类型：期刊论文
| 作者 | Liu, Jingao1; Carlson, Richard W.2; Rudnick, Roberta L.1; Walker, Richard J.1; Gao, Shan3; Wu, Fu-yuan4 |
| 刊名 | CHEMICAL GEOLOGY
 |
| 出版日期 | 2012-11-25 |
| 卷号 | 332页码:1-14 |
| 关键词 | Sr Nd, Hf, Os and Pb isotopes Nd-Hf decoupling Melt addition/metasomatism Mantle peridotites Yangyuan North China Craton |
| ISSN号 | 0009-2541 |
| DOI | 10.1016/j.chemgeo.2012.09.013 |
| 文献子类 | Article |
| 英文摘要 | Concentrations of trace elements in orthopyroxenes and clinopyroxenes, and the Sr, Nd, Hf and Pb isotopic compositions of clinopyroxenes from 11 well-characterized spinel peridotite xenoliths carried in the similar to 30 Ma Yangyuan alkali basalts, North China Craton, reveal a complex history of chemical modification of the lithospheric mantle. The clinopyroxenes were separated from a suite of peridotites for which whole-rock Re-Os isotopic systematics have previously suggested a melt depletion event at similar to 1.8 Ga, and were chosen to span a range of rare earth element (REE) patterns with (La/Yb)(N)=0.13 to 8.2. Present-day isotopic compositions are highly variable: Sr-87/Sr-86=0.70229 to 0.70443, epsilon(Nd)=-0.6 to +24, Pb-206/Pb-204=15.74 to 19.08, and epsilon(Hf)=+13.5 to +167. Partial melting models indicate that the Yangyuan clinopyroxenes have light REE (LREE) abundances that are too high to be pristine residues of fractional melting, reflecting subsequent enrichment of the LREE, e.g., via melt addition. Ancient melt addition accounts for the decoupling observed between Nd and Hf isotopic data for most samples, although a few samples may also have been modified by recent melt addition, shortly before the entrainment of the xenoliths into the host basalt. |
| WOS关键词 | LITHOSPHERIC MANTLE BENEATH ; RE-OS ; LU-HF ; SM-ND ; ULTRAMAFIC XENOLITHS ; TECTONIC EVOLUTION ; MASS-SPECTROMETRY ; DEPLETED MANTLE ; SOMERSET ISLAND ; WYOMING CRATON |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000313767100001 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | NSF(EAR 0635671 ; NSF(EAR 0635671 ; 0911096) ; 0911096) ; NSF(EAR 0635671 ; NSF(EAR 0635671 ; 0911096) ; 0911096) ; NSF(EAR 0635671 ; NSF(EAR 0635671 ; 0911096) ; 0911096) ; NSF(EAR 0635671 ; NSF(EAR 0635671 ; 0911096) ; 0911096) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/84142]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Liu, Jingao |
| 作者单位 | 1.Univ Maryland, Dept Geol, College Pk, MD 20742 USA 2.Carnegie Inst Sci, Dept Terr Magnetism, Washington, DC 20015 USA 3.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jingao,Carlson, Richard W.,Rudnick, Roberta L.,et al. Comparative Sr-Nd-Hf-Os-Pb isotope systematics of xenolithic peridotites from Yangyuan, North China Craton: Additional evidence for a Paleoproterozoic age[J]. CHEMICAL GEOLOGY,2012,332:1-14. |
| APA | Liu, Jingao,Carlson, Richard W.,Rudnick, Roberta L.,Walker, Richard J.,Gao, Shan,&Wu, Fu-yuan.(2012).Comparative Sr-Nd-Hf-Os-Pb isotope systematics of xenolithic peridotites from Yangyuan, North China Craton: Additional evidence for a Paleoproterozoic age.CHEMICAL GEOLOGY,332,1-14. |
| MLA | Liu, Jingao,et al."Comparative Sr-Nd-Hf-Os-Pb isotope systematics of xenolithic peridotites from Yangyuan, North China Craton: Additional evidence for a Paleoproterozoic age".CHEMICAL GEOLOGY 332(2012):1-14. |
入库方式： OAI收割
来源：地质与地球物理研究所
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