Noble gases in the Cameroon line and the He, Ne, and Ar isotopic compositions of high μ (HIMU) mantle

@inproceedings{Barfod1999NobleGI,
  title={Noble gases in the Cameroon line and the He, Ne, and Ar isotopic compositions of high μ (HIMU) mantle},
  author={Dan N. Barfod and Chris J Ballentine and Alex N. Halliday and J. Godfrey Fitton},
  year={1999}
}
Ultramafic xenoliths, basaltic lavas, and CO2 gases from the Cameroon line volcanic chain provide the first characterization of combined He, Ne, and Ar isotopes in a high-time-integrated 238U/2ø4pb = pt (HIMU) magmatic system. Helium isotopic compositions typically range from 5.0 to 6.7R,, with an average of 6.3. These values are indistinguishable from the 3He/4He of other HIMU locales (Austral Islands, St. Helena). Neon isotopic compositions for xenoliths and CO2 gases are mid-ocean ridge… CONTINUE READING

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