Fig. 3From: U–Pb zircon provenance of Triassic sandstones, western Swiss Alps: implications for geotectonic historyCompositional diagram of Vieux Emosson Formation and Late Carboniferous sandstones. Other Vieux Emosson Formation samples analysed in Wizevich et al. (2019) are contained within fields. Sandstones below the internal erosion surface (Fig. 2) plot as sub arkoses (n= 5) and those above the surface as arkoses (n= 4)Back to article page