Mantle hotspot neon in basalts from the Northwest Lau Back-arc Basin

J. E. Lupton*, R. J. Arculus, L. J. Evans, D. W. Graham

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    20 Citations (Scopus)


    The neon isotope compositions of basalts from the Northwest Lau Back-arc Basin reflect three-component mixing between an ocean island basalt (OIB) mantle hotspot component, mid-ocean ridge basalt (MORB) mantle, and atmosphere. Our study confirms that a mantle hotspot signature is present in the neon isotopes of both the Rochambeau Rifts and the Northwest Lau Spreading Center (NWLSC), just as it is in the helium isotopes. Furthermore, the Ne isotope signature in the Rochambeau Rifts lava having the highest 3He/4He ratio (28 Ra) most closely resembles that observed previously in the highest 3He/4He lavas from Samoa. The coupled He-Ne isotope systematics are further evidence for incursion into this region of material derived from the Samoan mantle plume.

    Original languageEnglish
    Article numberL08308
    JournalGeophysical Research Letters
    Issue number8
    Publication statusPublished - 1 Apr 2012


    Dive into the research topics of 'Mantle hotspot neon in basalts from the Northwest Lau Back-arc Basin'. Together they form a unique fingerprint.

    Cite this