Iron and magnesium isotope fractionation in oceanic lithosphere and sub-arc mantle: Perspectives from ophiolites

@inproceedings{Su2015IronAM,
  title={Iron and magnesium isotope fractionation in oceanic lithosphere and sub-arc mantle: Perspectives from ophiolites},
  author={Ben-Xun Su and Fang-zhen Teng and Yan Hu and Rendeng Shi and Mei-fu Zhou and Bin Zhu and Fan Liu and Xiao-Han Gong and Qi-Shuai Huang and Yan Xiao and Chen Chen and Yongsheng He},
  year={2015}
}
  • Ben-Xun Su, Fang-zhen Teng, +9 authors Yongsheng He
  • Published 2015
  • Geology
  • We present high-precision Fe and Mg isotopic data for the Purang ophiolite, southwestern Tibet, representing the first combined Fe and Mg isotopic study of the oceanic lithosphere hitherto. The δ56Fe and δ26Mg values of the ophiolitic peridotite, dunite and gabbro vary from −0.209 to 0.187‰ and from −0.28 to −0.14‰−0.14‰, respectively. The average δ56Fe of the peridotites is −0.030±0.143‰−0.030±0.143‰ (2SD, n=17n=17), a value indistinguishable from abyssal peridotites and chondrites, and lower… CONTINUE READING

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