Fig. S7. Sedimentary geochemistry used to infer the provenance of Permian–Triassic marine sandstones related to the SE Gondwana active continental margin, South Island, New Zealand

Discriminant function analysis which uses multiple trace elements to distinguish between island-arc, continental rift, ocean-island and mid-oceanic ridge settings (Agrawal <i>et al</i>. 2008).