The area in a 100km radius around Van Rhynsdorp nestles on the interface between five unique geological structures.
- Cape Supergroup.(The Bokkeveld and Cederberg sections)
- Karoo Supergruop.(The Ecca and Beaufordt sediments)
- Malmesbury Supergroup.(With granite intrutions)
- Namaqua-Natal Belt.
( Remnants of the coastal sediments deposited during the formation of the first Super Continent. Rhodinia)
- Gariep Belt.
(Remnants of the coastal sediments deposited during the formation of the second Super Continent, Pangea)