Concordia diagrams (Tera–Wasserburg, ²³⁸U/²⁰⁶Pb vs. ²⁰⁷Pb/²⁰⁶Pb) and kernel density estimate (KDE) plots showing the distribution of U–Pb isotopic analyses for metasedimentary rocks: (A–B) PG21-04 micaschist; (C–D) PG20-01 paragneiss; (E) PG20-02 paragneiss; and (F) PG20-04 diatexite. In (A), (C), (E) and (F), grey circles indicate rim analyses; in (B) and (D), empty circles are excluded from the calculation of Concordia dates. Only analyses with less than 5 per cent discordance (²⁰⁶Pb/²³⁸U ÷ ²⁰⁶Pb/²⁰⁷Pb age × 100) are included in the KDE plots.