Abstract
SCHILLING1 has interpreted the chemistry of basalt lavas from the Reykjanes Ridge and Iceland, identifying two distinct upper mantle sources for these lavas, one of which rises in a primordial hot mantle plume beneath Iceland. I questioned2 this interpretation on the grounds that insufficient attention had been given to the possibility that the magmas were derived from a homogeneous source; the differences could arise from by fractional crystallisation during the ascent of the lava.
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References
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O'HARA, M. Is there an Icelandic mantle plume?. Nature 253, 708–710 (1975). https://doi.org/10.1038/253708a0
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DOI: https://doi.org/10.1038/253708a0
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