A. Pongola Group (SE Transvaal, S Swaziland)

1.Insuzi subgroup (Approx. 3.0 Ga)

-Basic volcanics, mafic-felsic

-Sediments, shale

2. Mozaan Subgroup (younger)

a. Argillaceous and Arenacous Sediments

-Shale, conglomerates

-Cycle between muddy tidal flats and shallow shelf sands