High 3He/4He ratios in peridotite xenoliths from SW Japan revisited: Evidence for cosmogenic 3He released by vacuum crushing

@inproceedings{Yokochi2005High3R,
  title={High 3He/4He ratios in peridotite xenoliths from SW Japan revisited: Evidence for cosmogenic 3He released by vacuum crushing},
  author={Reika Yokochi and Bernard Marty and Rapha{\"e}l Pik and Pete Burnard},
  year={2005}
}
[1] In isotope studies of magmatic systems, magmatic He is preferentially extracted by crushing minerals under vacuum, whereas cosmogenic and/or radiogenic He isotopes are released by mineral melting as they are produced and remain in the mineral's matrix. Interpretation of magma source composition or surface residence time depends on the assumption that vacuum crushing releases insignificant cosmogenic 3He. We reinvestigated the helium isotopic composition of olivines in xenoliths from… CONTINUE READING

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