Fig. S1. Permian–Triassic felsic tuffs in South Island, New Zealand: significance for oceanic and active continental margin subduction Alastair H.F. Robertson Romesh Palamakumbura Hamish Campbell 10.6084/m9.figshare.7745702.v1 https://geolsoc.figshare.com/articles/figure/Fig_S1_Permian_Triassic_felsic_tuffs_in_South_Island_New_Zealand_significance_for_oceanic_and_active_continental_margin_subduction/7745702 Major-element oxide variation plots for the Brook Street Terrane. (a) Fe<sub>2</sub>O<sub>3</sub> v. SiO<sub>2</sub>; (b) MnO v. SiO<sub>2</sub>; (c) MgO v. SiO<sub>2</sub>; (d) TiO<sub>2</sub> v. Al<sub>2</sub>O<sub>3</sub>; (e) TiO<sub>2</sub> v. MgO; (f) Fe<sub>2</sub>O<sub>3</sub> v. MgO; (g) MnO v. MgO; (h) CaO v. MgO; (i) K<sub>2</sub>O v. MgO. See text and the Supplementary field and petrographic information for explanation. 2019-02-20 12:13:07 K 2 O v TiO 2 v MgO Brook Street Terrane Fe 2 O 3 v SiO 2 MnO v al 2 O 3 margin subduction Major-element oxide variation plots Geology