What is "statherian"

The Statherian (; , meaning "stable, firm") is the final geologic period in the Paleoproterozoic Era and lasted from Mya to Mya (million years ago). Instead of being based on stratigraphy, these dates are defined chronometrically.

The period is characterized on most continents by either new platforms or final cratonization of fold belts.

By the beginning of the Statherian, the supercontinent Columbia had assembled.