No clear tectonic model exists for the Karoo sedimentary basin in South Africa, which is a possible host for Permian shale gas. The main aim of this proposed project is to create a 3D geological model of the Karoo Basin using geological information, magne tic and gravity data, and supplementary borehole and seismic data. This model will be used to investigate the tectonic environment of the Karoo, and the dynamic formation of the basin in terms of the flexural response on and off craton, and the possible f ormation of natural gas deposits.