Old, ∼2020 Ma Ga amphibolite facies Sperrgebiet Arc domain discovered.
Provided detritus for later ∼1.9 Ga Richtersveld Arc and younger rocks.
Post-Arc sedimentary sequence (<1700 Ma; Aurus Group) identified.
∼850 Ma meta-volcanic gneisses equated with Richtersveld Igneous Complex.
Pervasive fabrics are Pan-African in age formed during major sinistral transpressive phase of Gariep Orogeny.