Isotope dilution concentration determinations are accurate to approx. 1% for Rb and Sr, and 0.5% for Sm and Nd. Total procedural blanks averaged apporx. 1 ng for Sr and 100 pg...
A Pa/Th value of 0.058 ± 0.014 was measured by Burckel et al. (2015) at 360 cm, that we discarded as an outlier with respect to the replicate measured at 360 cm and surrounding...
