Contact between the flow of lava (mostly basalt) from one of various fault that appear whem the Gondwana continent were split away to form the America and Africa. The basalt dyke, (black rock) are in contact with
granite (pinkish rock, to the left and the right side).
local: south side of the Mole beach.
Note that the basalt shows interdigitating characteristic on the east side (left).
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