期刊文献+

单颗粒锆石的20μm小斑束原位微区LA-ICP-MSU-Pb年龄和微量元素的同时测定 被引量:134

原文传递
导出
摘要 利用193nm LA-ICP-MS在20μm小斑束条件下对3个国际标准锆石样品和一个实验室内部的标准锆石样品进行了U-Pb年龄和20个微量元素的同时测定.测定结果显示,91500,GJ1和TEMORA1(TEM)三个国际标准锆石样品的206Pb/238U加权平均年龄分别为(1064.4±4.8)Ma(2σ,n=15),(603.2±2.4)Ma(2σ,n=15)和(418.2±2.4)Ma(2σ,n=11),其分析的单点相对偏差(2σ)均小于2.2%,加权平均年龄的相对偏差(2σ)均小于0.6%.这些年龄测定值与推荐值之间在误差范围内完全一致.一个实验室内部标准锆石样品SK10-2(来自辽东地区细粒辉长岩)的206Pb/228U加权平均年龄为(31.42±0.25)Ma(2σ,n=16),其单点相对偏差(2σ)为2.4%~5.7%,加权平均年龄的相对偏差(2σ)为0.80%,与Yuan等测定结果一致.利用相同的仪器测试条件对NIST612和NIST614中微量元素进行了测定,测定值与推荐值在误差范围内完全一致.在年龄测定的同时,采用NIST610作外标,对微量元素分布不均匀的91500和GJ1锆石中的微量元素进行了分析,91500的测定值基本落在文献提供的元素含量变化范围之内,GJ1锆石中Pb,Th和U含量的测定值也落在TIMS测定值之内.4个锆石样品平滑性的稀土元素球粒陨石标准化曲线表明,所获得的稀土元素之间的相对含量也是准确的.这些分析表明,本次研究所建立的LA-ICP-MS分析方法,在20μm激光斑束条件下,不仅可准确测定锆石的U-Pb年龄,而且可以同时较准确的获得锆石的微量元素组成.
出处 《科学通报》 EI CAS CSCD 北大核心 2007年第2期228-235,共8页 Chinese Science Bulletin
基金 国家自然科学基金(批准号:40472099) 国家自然科学基金委员会"创新研究群体科学基金"(批准号:40521001) 教育部长江学者和创新团队发展计划项目(编号:IRT0441) 教育部科学研究重大项目(编号:306021)资助
  • 相关文献

参考文献19

  • 1Wilde S A, Vally J W, Peck W H, et al. Evidence from detrital zircons for the existence of continental crust and oceans on the Earth 4.4 Gyr ago. Nature, 2001, 409:175--178
  • 2Watson E B, Harrison T M. Zircon thermometer reveals minimum melting condition on earlier Earth. Science, 2005, 308:841--844
  • 3Horn I, Rudnick R L, McDonough W F. Precise elemental and isotope ratio determination by simultaneous solution nebulization and laser ablation-ICP-MS: application to U-Pb geochronology. Chem Geol, 2000, 167:405--425
  • 4Bailard J R, Palin J M, Williams I S. Two ages of porphyry intrusion resolved for the super-giant Chuquicamata copper deposit of northern Chile by ELA-ICP-MS and SHRIMP. Geology, 2001, 29:383--386
  • 5Massimo T. In situ Pb geochronology of zircon with laser ablation-inductively coupled plasma-sector field mass spectrometry.Chem Geol, 2003, 199:159---177
  • 6Chang Z S, Jeffery D V, William C M, et al. U-Pb dating of zircon by LA-ICP-MS. Geochem Geophys Geosyst, 2006, 7(5): 1--14
  • 7Antonio S, Larry M H, Thomas C, et al. In situ petrographic thin section U-Pb dating of zircon, monazite, and titanite using laser ablation-MC-ICP-MS. Int J Mass Spectrom, 2006, 253:87--97
  • 8袁洪林,吴福元,高山,柳小明,徐平,孙德有.东北地区新生代侵入体的锆石激光探针U-Pb年龄测定与稀土元素成分分析[J].科学通报,2003,48(14):1511-1520. 被引量:612
  • 9Li X H, Liang X R, Sun M, et al. Geochronology and geochemistry of single-grain zircons: Simultaneous in-situ analysis of U-Pb age and trace elements by LAM-ICP-MS. Eur J Mineral, 2000, 12:1015--1024
  • 10Yuan H L, Gao S, Liu X M, et al. Accurate U-Pb age and trace element determinations of zircon by laser ablation-inductively coupled plasma mass spectrometry. Geostand Newsl, 2004, 28:353--370

二级参考文献22

  • 1宋彪,张玉海,万渝生,简平.锆石SHRIMP样品靶制作、年龄测定及有关现象讨论[J].地质论评,2002,48(S1):26-30. 被引量:1175
  • 2[1]Wilde S A, Valley J W, Peck W H, et al. Evidence from detrital zircons for the existence of continental crust and oceans on the Earth 4.4 Gyr ago. Nature, 2001, 409: 175~178
  • 3[2]Mojzsis S J, Harrison T M, Pidgeon R T. Oxygen-isotope evidence from ancient zircons for liquid water at the Earth's surface 4300 Myr ago. Nature, 2001, 409: 178~181
  • 4[3]Horn I, Rudnick R L, McDonough W F. Precise elemental and isotope ratio determination by simultaneous solution nebulization and laser ablation-ICP-MS: Application to U-Pb geochronology. Chem Geol, 2000, 167: 405~425
  • 5[4]Ballard J R, Palin J M, Williams I S, et al. Two ages of porphyry intrusion resolved for the super-giant Chuquicamata copper deposit of northern Chile by ELA-ICP-MS and SHRIMP. Geology, 2001, 29: 383~386
  • 6[5]Günther D, Frischknecht R, Heinrich C A, et al. Capabilities of an ArF 193 nm excimer laser for LAM-ICP-MS micro-analysis of geological materials. Journal of Analytical Atomic Spectrometry, 1997, 12: 939~944
  • 7[6]Kosler J, Fonneland H, Sylvester P, et al. U-Pb dating of detrital zircons for sediment provenance studies--a comparison of laser ablation ICPMS and SIMS techniques. Chemical Geology, 2002, 182: 605~618
  • 8[11]Li X H, Liang X, Sun M, et al. Geochronology and geochemistry of single-grain zircons: Simultaneous in-situ analysis of U-Pb age and trace elements by LAM-ICP-MS. Eur J Mineral, 2000, 12: 1015~1024
  • 9[12]Li X H, Liang X R, Sun M, et al. Precise 206Pb/238U age determination on zircons by laser ablation microprobe-inductively coupled plasma-mass spectrometry using continuous linear ablation. Chem Geol, 2001, 175: 209~219
  • 10[16]Gao S, Liu X M, Yuan H L, et al. Analysis of forty-two major and trace elements of USGS and NIST SRM Glasses by LA-ICPMS. Geostand Newsl, 2002, 22: 181~195

共引文献611

同被引文献2747

引证文献134

二级引证文献1528

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部