The Bushveld Large Igneous Province
Rooiberg Group volcanics The Rooiberg Group volcanics, which are up to 3.5 km thick in the Loskop area, are preserved over an area of > 50,000 km2 (Schweitzer et al, 1995) and may even have exceeded 300 000 km3 (Twist and French, 1983) although in many areas the succession is extensively thinned or removed by erosion (Buchanan et al,