An analysis of the distribution of helium-isotope ratios in oceanic extrusions from Earth's mantle seems to establish a connection with the spread of ages in continental crust. What mechanism might underlie this?
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Porcelli, D. When crust is bred. Nature 446, 863–864 (2007). https://doi.org/10.1038/446863a
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DOI: https://doi.org/10.1038/446863a
