Glacial weathering and the hafnium isotope composition of seawater, van de Flierdt, T.; Frank, M.; Lee, D. C.; Halliday, A. N. , Earth and Planetary Science Letters, Apr 30, Volume 198, Issue 1-2, p.167-175, (2002), Pii S0012-821x(02)00521-6 Abstract

Changes in erosion and ocean circulation recorded in the Hf isotopic compositions of North Atlantic and Indian Ocean ferromanganese crusts, Piotrowski, A. M.; Lee, D. C.; Christensen, J. N.; Burton, K. W.; Halliday, A. N.; Hein, J. R.; Gunther, D. , Earth and Planetary Science Letters, Sep 15, Volume 181, Issue 3, p.315-325, (2000) Abstract