A decreasing trend in 142 Nd/ 144 Nd anomalies with time for the Greenland rocks, suggesting progressive convective homogenisation of fractionated mantle domains, has been proposed ( Bennett et al ., 2007 ; Rizo et al ., 2013 ).
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Hadean geodynamics inferred from time-varying <sup>142</sup>Nd/<sup>144</sup>Nd in the early Earth rock record.
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