Amazon: a river coming together

Exploration · Neogene

Amazon: a river coming together

Miocene to present · drainage connectivity

An imagined reconstruction of ancient lowlands and drainage, not exact locations, scale or a single dated distribution.

Andean uplift, erosion, sedimentation and changing lowlands together reshaped Amazon drainage. This was not one giant river suddenly reversing. The diagram explains connectivity, not exact ancient channels or scale.