Geological Fit

When the geology of eastern South America and West Africa was mapped it revealed that ancient rock outcrops (cratons) over 2,000 million years old were continuous from one continent to the other.


Geological Fit of Opposing Continental Coastlines
Geological fit of opposing
continental coastlines

Image: From OU S267 How The Earth Works: Block 2 How Plate Tectonics Works p10

Jigsaw fit  Tectonic fit