Statherian
The Statherian (IPAEng|stəˈθɪəriən, _el. "statheros", meaning "stable, firm") is the final
geologic period in thePaleoproterozoic Era and lasted from 1800 Ma to 1600 Ma (million years ago). Instead of being based onstratigraphy , these dates are defined chronometrically.During this period the first complex single-celled life appeared.
The period is characterized on most
continent s by either new platforms or finalcraton ization offold belt s.The
supercontinent Columbia formed at the beginning of this period.References
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