The Palaeoproterozoic (∼2.06 Ga) Rooiberg Group, South Africa: Dominated by extremely high-grade lava-like and rheomorphic ignimbrites? New observations and lithofacies analysis

The ∼2.06 Ga Rooiberg Group of South Africa, related to the greater Bushveld Complex-forming event (Bushveld Large Igneous Province) appears to have been associated with some of the largest eruptions of silicic rocks in the Precambrian rock record. Despite extensive geochemical work that has been carried out on the voluminous silicic volcanic and intercalated sedimentary rocks, so far, a clear interpretation of the eruptional, transport and depositional mechanisms is still outstanding.