Rhyacian Period

An age of high volcanism; possible early eukaryotes

The Rhyacian (2.3-2.1 Ga) is the second period of the Paleoproterozoic Era, occurring after the Siderian, and before the Orosirian.

Geologic Age

Eon / Era

What happened during this time?


Above: oldest evidence of a mobile organism from 2.1 Ga in Gabon

Above: Reconstruction of Diskagma


Additional Resources