Analytical details:(a) All reported 143Nd/144Nd ratios are corrected to a JNdi value of 0.512115 (Tanaka et al., 2000, doi:10.1016/S0009-2541(00)00198-4) using bracketing standards.(b) S.E. = internal precision (2s level) on sample measurement(c) εNd based on present-day CHUR value 143Nd/144Nd = 0.512638 expressed in parts per 10,000 (Jacobsen and Wasserburg, 1980, doi:10.1016/0012-821X(80)90125-9).(d) External error based on the reproducibility of all JNdi standards measured during run.(f) εNd (t) were calculated using values from column (e) and CHUR values of 143Nd/144Nd 0.512638 and Sm/Nd 0.1966 from Jacobsen and Wasserburg (1980, doi:10.1016/0012-821X(80)90125-9).