Archaean mantle heterogeneities

Jahn B.-M., Vidal P., and Tilton G. R. (1980) Archaean mantle heterogeneity evidence from chemical and isotopic abundances in Archaean igneous rocks. Phil. Trans. Roy. Soc. London A297, 353-364. 

McCulloch M. T. and Compston W. (1981) Sm-Nd age of Kambalda and Kanowna greenstones and heterogeneity in the Archaean mantle. Nature 294, 322-327. 

Generation of large-scale heterogeneities in the early Archaean mantle... 

Korsch, M. j. Gulson, B. L. 1986. Nd and Pb isotopic studies of an Archaean layered mafic-ultramafic complex. Western Australia, and implications for mantle heterogeneity. Geochimica et Cosmochimica Acta, 50, 1-10. 

Blichert-Toft, j. Albarede, F. 1994. Short-lived chemical heterogeneities in the Archaean mantle with implications for mantle convection. Science, 263, 1593-1596. 

McCulloch and Bennett (1994) pointed out that the existence of deeply buried mafic crust in the mantle is inconsistent with the very high temperatures of the early Archaean mantle and that any deeply buried crust would be rapidly homogenized back into the mantle. However, Bizzarro et al. (2000) dispute this and point out that, with respect to Hf-isotopes, the early to middle Archaean mantle was poorly mixed and much more heterogeneous than the modern mantle so that a mafic component could maintain its distinctiveness. 

Sun S.-S. and Nesbitt R. W. Chemieal heterogeneity of the Archaean mantle, composition of the Earth and mantle evolution. Earth Planet. Sci. Lett., 35, 1977, 429-48. 

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