The processes responsible for the growth of Earth's first continents are enigmatic. The geochemical signature of 4-billion-year-old rocks discovered in Canada points to a key role for shallow magmatic processes above upwelling mantle rocks.
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© BJARKI REYR MR / ALAMY
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Kemp, A. A new recipe for old crust. Nature Geosci 7, 482–483 (2014). https://doi.org/10.1038/ngeo2176
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DOI: https://doi.org/10.1038/ngeo2176
