DYNAMIC MELTING OF THE ICELAND PLUME

T R ELLIOTT, Chris Hawkesworth, K GRONVOLD

    Research output: Contribution to journalArticlepeer-review

    146 Citations (Scopus)

    Abstract

    Icelandic high-magnesia basalts show striking correlations between major element abundances and incompatible element and radiogenic isotope ratios. The most MgO-rich lavas have the most depleted incompatible element ratios and among the least radiogenic lead isotopes recorded in Atlantic mid-ocean-ridge basalts, highlighting a decoupling of the major and trace element characteristics expected of plume melts. This paradox can be explained by the process that mixes melts segregated from different depths of the melting column. The resulting model provides insight into the processes governing melt compositions at spreading ridges.

    Original languageEnglish
    Pages (from-to)201-206
    Number of pages6
    JournalNature
    Volume351
    Issue number6323
    Publication statusPublished - 16 May 1991

    Keywords

    • OCEAN RIDGE BASALTS
    • REYKJANES PENINSULA BASALTS
    • MID-ATLANTIC RIDGE
    • MANTLE EVOLUTION
    • BENEATH ICELAND
    • ISOTOPE RATIOS
    • FAMOUS AREA
    • MAGMA
    • LEAD
    • STRONTIUM

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