Chinese Science Bulletin

, Volume 53, Issue 10, pp 1565–1573

In situ simultaneous determination of trace elements, U-Pb and Lu-Hf isotopes in zircon and baddeleyite

  • LieWen Xie
  • YanBin Zhang
  • HuiHuang Zhang
  • JingFeng Sun
  • FuYuan Wu
Articles Geochemistry

DOI: 10.1007/s11434-008-0086-y

Cite this article as:
Xie, L., Zhang, Y., Zhang, H. et al. Chin. Sci. Bull. (2008) 53: 1565. doi:10.1007/s11434-008-0086-y

Abstract

This paper describes a combined method of simultaneously measuring U-Pb and Lu-Hf isotopes as well as trace elements in Phalaborwa baddeleyite and 91500, GJ-1, TEMORA-1 and SK10-2 zircons by means of Neptune MC-ICPMS and Agilent Q-ICPMS connected to a 193 nm excimer laser ablation system. Material ablated by laser was carried in different proportions into Q-ICPMS for U-Pb isotopic and trace elemental and MC-ICPMS for Lu-Hf isotopic compositions. Experiments indicate that different proportions of ablated material for the Q-ICPMS and MC-ICPMS (6:4, 5:5 and 4:6 respectively) do not show any bias for the zircon/baddeleyite U-Pb age, Lu-Hf isotope and trace elemental compositions within analytical errors. Using 40–60 μm spot size, the obtained U-Pb ages of Phalaborwa baddeleyite, 91500, GJ-1, TEMORA and SK10-2 zircons are 2065±15 (2σ, n=20), 1063±6 (2σ, n=19), 613±6 (2σ, n=20), 416±5 (2σ, n=20) and 32.6±0.5 (2σ, n=20) Ma, respectively. The 176Hf/177Hf ratios are 0.281231±24 (2SD, n=20), 0.282310±35 (2SD, n=19), 0.282028±34 (2SD, n=20), 0.282687±34 (2SD, n=20) and 0.282752±53 (2SD, n=20), respectively. The obtained trace elemental compositions are identical to the reference values. Therefore, this kind of technique makes it possible to simultaneously obtain the U-Pb age, Lu-Hf isotopes and trace elemental compositions of zircon and baddeleyite, which could be an important tool in solving problems in earth sciences.

Keywords

U-Pb ageLu-Hf isotopestrace elementszirconin situ measurement

Copyright information

© Science in China Press and Springer-Verlag GmbH 2008

Authors and Affiliations

  • LieWen Xie
    • 1
  • YanBin Zhang
    • 1
  • HuiHuang Zhang
    • 1
  • JingFeng Sun
    • 1
  • FuYuan Wu
    • 1
  1. 1.State Key Laboratory of Lithospheric Evolution, Institute of Geology and GeophysicsChinese Academy of SciencesBeijingChina