Chinese Journal of Geochemistry

, Volume 12, Issue 2, pp 97–109 | Cite as

A study of REE and Pb, Sr and Nd isotopes in garnet-lherzolite xenoliths from Mingxi, Fujian Province

  • Huang Wankang
  • Wang Junwen
  • Basu A. R. 
  • Tatsumoto M. 


The REE and Pb, Sr, Nd isotopes in three xenoliths from limburgite and scoria-breccias, including spinel-lherzolite, spinel-garnet-lherzolite and phlogopite-gamet-lherzolite, were analysed. The REE contents of the xenoliths are 1.3 to 3.3 times those of the chondrites with their REE patterns characterized by weak LREE depletion. The143Nd/144Nd values of whole rocks and minerals range from 0.51306 to 0.51345 with εNd=+ 8.2− +15.8,206Pb/204 Pb < 18.673, and207Pb/204Pb < 15.574. All this goes to show that the upper mantle in Mingxi at the depth of 67–82 km is a depleted mantle of MORB type, with87Sr/86 Sr ratios 0.70237–0.70390. In Nd-Sr diagram the data points of whole rocks are all out of the mantle array, implying that the xenoliths from Mingxi have more radiogenic Sr isotopes than those of the mantle array.

Key words

garnet-Iherzolite xenolith REE Pb Sr Nd isotopes Mingxi 


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Copyright information

© Institute of Geochemistry, Chinese Academy of Sciences 1993

Authors and Affiliations

  • Huang Wankang
    • 1
  • Wang Junwen
    • 1
  • Basu A. R. 
    • 2
  • Tatsumoto M. 
    • 3
  1. 1.Institute of Geochemistry (Guangzhou Branch)Academia SinicaGuangzhou
  2. 2.Department of Geological SciencesUniversity of RochersterUSA
  3. 3.Branch of Isotope GeologyU. S. Geological SurveyDenverUSA

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