At this time a divergent plate boundary was forming the Atlantic Ocean, southwest of Gondwana, heralding the earliest stages of the break-up of the Gondwanan supercontinent.

This was because orogenic loading in the south by the Gondwanide mountains from the early Triassic caused changes in position of the forebulge and foredeep in the foreland basin system.

[13] Outcrops and exposures of the Stormberg Group are found in several localities in Lesotho, and in the Free State, KwaZulu-Natal, and Eastern Cape provinces in South Africa.

The Stormberg Group is composed of three main geological formations that are found in numerous localities across Lesotho and in the Free State, KwaZulu-Natal, and Eastern Cape provinces in South Africa.

Some examples include the Tuli Basin in the northern parts of South Africa, Botswana, and Zimbabwe, and the Etjo Sandstone of Namibia.