OK, here’s the background: As I understand it, the Amazon River at one time in the geologic past used to flow East to West, emptying somewhere near modern Peru or Ecuador. Then, the formation of the Andes Mountains blocked off the oulet, causing it to form a giant inland sea, which ultimately found another outlet, which was to the East.
In addition, as I understand it, it’s thought that in the distant past, when Africa and South America were one continent, that what is the modern Congo would have flowed into the modern Amazon–which would have made one MF of a river!
Anyway, the Orinoco meets the ocean in Northern Venezuela. In the distant geologic past–when SA and Africa were one island–that would have been somewhere in the modern Guinea/Sierra Leone/Liberia area. Is there any geologic evidence to suggest that the modern day Orinoco existed at that time, and the it had a flow thru Western Africa?
(And feel free to correct any misconceptions I might be under. I come here to learn.)