Stratigraphy and provenance of Pliocene …
zone (TZ) 1 (unfoliated greywacke), TZ 2 (weakly foliated greywacke, or semischist), and TZ 3 and 4 (fully recrystallised and pervasively foliated schist) (Fig. 1) (Bishop 1972 scheme modified by Turnbull et al. 2001). The greywacke sequences on the northeast and southwest margins of the metamorphic belt have different primary compositions.