As noted by Wegner  in 1912, African and South American geological provinces and mineral belts reconstruct into systematic alignment (below). The  geologic strata are disposed and fractured about a suspected impact structure forming the Congo basin. Outboard rings of uplift and subsidence have the same dimensions as for the Chicxulub impact on the North American Plate. Kimberlite pipes and lamprohyre dikes with associated diamond occurrences display systematic geometry with respect a multi-ringed impact structure, suggesting impact-fracturing to mantle depths. The crustal fracture pattern through the basin region radiates outward toward the NNW, indicating the path of crustal compression from an oblique impact. The stratigraphic relationships are compatible with a Changhsingian impact at the end of the Paleozoic. The realigned position of South America is ghost-image with the Somali Plate. The impact may haven spurred spreading and formation of the Atlantic Ocean

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Current plate motions are shown below. Red vectors are proportionately scaled to emphasize relative horizontal velocity.
Overal plate motions in thsi region move away from the south Atlantic area.