The Statherian Period
The Statherian, meaning "stable, firm" is the final geologic period in the Paleoproterozoic Era and lasted from 1800 Ma to 1600 Ma (million years ago).
1899-12-30 00:00:00 - The Archiver
Instead of being based on stratigraphy, these dates are defined chronometrically.
During this period the first complex single-celled life appeared.
The period is characterized on most continents by either new platforms or final cratonization of fold belts.
The supercontinent Columbia formed at the beginning of this period.