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In situ U-Pb, Sr and Nd isotopic analysis of loparite by LA-(MC)-ICP-MS

文献类型：期刊论文

作者Mitchell, Roger H.1; Wu, Fu-Yuan2; Yang, Yue-Heng2
刊名CHEMICAL GEOLOGY
出版日期2011-01-07
卷号280期号:1-2页码:191-199
关键词Loparite U-pb Ages Sr ANd Nd Isotopic Ratios Laser Ablation Peralkaline Syenites
ISSN号0009-2541
DOI10.1016/j.chemgeo.2010.11.008
文献子类Article
英文摘要This work describes the in situ analysis of loparite [(Na,REE)Ti2O6], a perovskite group mineral with extremely low Rb/Sr ratios and high rare earth contents, by LA-(MC)-ICP-MS for the determination of U-Pb ages together with Sr and Nd isotopic composition. The reliability of these data were validated by analysis of a loparite standard by TIMS solution methods. Data are given for loparite from the Lovozero and Khibiny peralkaline complexes of the Kola Alkaline Province (Russia). For Lovozero loparite the Tera-Wasserburg intercept age for 15 loparites analysed is 373 +/- 11 Ma, and the weighted Pb-207 corrected Pb-206/U-238 age is 373 +/- 2 Ma. For Khibiny loparite, the intercept age for 5 loparites analysed is 375 +/- 10 Ma, and the weighted Pb-207 corrected Pb-206/U-238 age is 374 +/- 3 Ma. The common Pb compositions for Lovozero and Khibiny loparites are identical i.e, Pb-207/Pb-206 = 0.898 +/- 0.009 and 0.898 +/- 0.007, respectively. The Sr-87/Sr-86 initial ratios of Lovozero loparite range from 0.703552 to 0.703682 (av. 0.703611), and epsilon Nd (t(370)) from + 3.8 to + 4.4 (av. + 4.0). The Sr-87/Sr-86 initial ratios of Khibiny loparite range from 0.703560 to 0.703871, and epsilon Nd (t(730)) from + 4.0 to + 4.8. Our data indicate that in situ LA-(MC)-ICP-MS analysis of loparite provides accurate and precise estimates of the intrusion ages and isotopic composition of peralkaline rocks. (C) 2010 Elsevier B.V. All rights reserved.
WOS关键词KHIBINA ALKALINE COMPLEX ; LA-MC-ICPMS ; KOLA-PENINSULA ; MASS-SPECTROMETRY ; COMPOSITIONAL VARIATION ; GEOLOGICAL-MATERIALS ; AGE-DETERMINATION ; PEROVSKITE-GROUP ; SM-ND ; RB-SR
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000287016400017
出版者ELSEVIER SCIENCE BV
资助机构Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Natural Science Foundation of China(49634019) ; Natural Science Foundation of China(49634019) ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Natural Science Foundation of China(49634019) ; Natural Science Foundation of China(49634019) ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Natural Science Foundation of China(49634019) ; Natural Science Foundation of China(49634019) ; Natural Sciences and Engineering Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada ; Natural Science Foundation of China(49634019) ; Natural Science Foundation of China(49634019)
源URL[http://ir.iggcas.ac.cn/handle/132A11/73695]  
专题中国科学院地质与地球物理研究所
通讯作者Mitchell, Roger H.
作者单位1.Lakehead Univ, Dept Geol, Thunder Bay, ON P7B 5E1, Canada
2.Chinese Acad Sci, State Key Lab Lithospher Evolut, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Mitchell, Roger H.,Wu, Fu-Yuan,Yang, Yue-Heng. In situ U-Pb, Sr and Nd isotopic analysis of loparite by LA-(MC)-ICP-MS[J]. CHEMICAL GEOLOGY,2011,280(1-2):191-199.
APA Mitchell, Roger H.,Wu, Fu-Yuan,&Yang, Yue-Heng.(2011).In situ U-Pb, Sr and Nd isotopic analysis of loparite by LA-(MC)-ICP-MS.CHEMICAL GEOLOGY,280(1-2),191-199.
MLA Mitchell, Roger H.,et al."In situ U-Pb, Sr and Nd isotopic analysis of loparite by LA-(MC)-ICP-MS".CHEMICAL GEOLOGY 280.1-2(2011):191-199.

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来源：地质与地球物理研究所

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