The middle to late Proterozoic Awasib Mountain terrain (AMT) comprises two major crustal components that are correlated with the Namaqualand Metamorphic Complex (NMC) and Sinclair Sequence, respectively. The Kairab Complex forms an important constituent of the early-stage crust of the AMT and comprises a mixed gneiss and amphibolite terrain. Volcano-sedimentary rocks within the latter have similar counterparts in the Garub Sequence of the NMC, while the younger AMT granitoid gneisses (Aunis Tonalite Gneiss and Khorasib Granite Gneiss) resemble several of the later NMC granitoids. In addition to lithostratigraphic similarities to the NMC, the early-stage crust of the AMT has undergone at least three episodes of deformation, the earliest of these being characterised by amphibolite grade metamorphism and migmatisation. The late-stage crust of the AMT is characterised by trough-hosted volcano-sedimentary successions (Urusib, Haiber Flats and Barby Formations) and a host of high-level intrusive rocks (Saffier and Haisib Intrusive Suites, Bushman Hill Quartz Diorite, and Awasib and Chowachasib Granites) which together bear a strong resemblance to lithologies in the middle part, or second cycle, of the Sinclair Sequence. In comparison to the Sinclair Sequence, late-stage AMT rocks are strongly deformed (four episodes of deformation) and metamorphosed (greenschist facies) as a result of events which pre-dated the Pan-African orogeny and appear to be closely related to tectonic (and possibly also magmatic) activity in the adjacent Central Zone of the NMC. South-west of the AMT, the even more highly deformed and metamorphosed Konipberg Formation may lie close to a palaeomargin of the Sinclair Sequence. Late bimodal dyke swarms represent the youngest magmatism in the AMT and may be correlated with similar dyke swarms in the Sinclair Sequence. The Aubures Formation, formerly part of the Sinclair Sequence, post-dates this late magmatism and therefore probably formed during early Pan-African rifting.