Analysis of the platinum-group elements in a particular type of ancient volcanic rock provides clues about Earth's early history as well as a fresh approach to understanding mantle dynamics.
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Arndt, N. Trickle-down geodynamics. Nature 460, 583–584 (2009). https://doi.org/10.1038/460583a
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DOI: https://doi.org/10.1038/460583a
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