Strontium and neodymium isotopes. (a) Measured in situ 87
Sr of carbonate phases (the grey area, see (b) for data) compared to age-corrected (20 Ma) measured whole-rock 87
Sr and 143
Nd from the greyschist, altered greyschist, and hydrothermal breccia. Published in-situ 87
Sr for epidote are plotted for comparison [11
]. (b) Individual in situ 87
Sr isotope data of the different types of carbonate phases from Akatore Creek and Bruce Rocks. The grey boxes represent the weighted average Sr isotope ratio with errors from each group of samples.