Figures & data
Figure 1. Basement terranes within the Eastern Province of southern Zealandia, showing principally the Permian to Early Cretaceous accretionary wedge in Canterbury and Marlborough, South Island, New Zealand. B, Barretts Formation; MCD, MacDonald Downs locality, sample MCD1.
Figure 2. Geology of mid-Canterbury, New Zealand, showing Rakaia Terrane, Permian–Triassic basement, its Jurassic cover formations (Clent Hills Group and Wakaepa Formation) and overlying Late Cretaceous sedimentary and volcanic units. Sample locations discussed in text are shown.
Figure 3. Combined histogram/probability density diagrams of detrital 206Pb/238U zircon and 39Ar/40Ar muscovite ages from Jurassic sandstones in Canterbury: A, Wakaepa Formation, at Whitecliffs WKPA1 (zircon data); B, Clent Hills Group, Haast Creek HCX1 (zircon data); C, Clent Hills Group, Haast Creek HCX5 (muscovite data). Previously published detrital zircon age patterns for Rakaia Terrane sandstones in Canterbury: D, Lower Selwyn River SEL4 (Late Permian, Atomodesma locality); E, Pudding Hill Stream PUD1 (Late Triassic, Plicatula locality) (Pickard et al. Citation2000; Adams et al. Citation2007); F, Kaweka Terrane sandstone MCD1 (Jurassic) at MacDonald Downs (Adams et al. Citation2011). Ages > 600 Ma are stacked at the right-hand margin.
Figure 4. Combined histogram/probability density diagram of detrital 206Pb/238U zircon ages in Barretts Formation sandstone BARX1, Productus Creek, Southland.
