The East African Rift System is now generally regarded as a prime example of an early stage of continental separation. The alternative thesis, that it marks a Precambrian lineament affecting the whole of the lithosphere, has not been disproved and justifies further investigation. Recently published geological and geophysical observations support the alternative hypothesis of a resurgent Precambrian taphrogenic lineament extending 5000 km from the Afar triangle to the Orange River in South Africa.

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