Type
Era
Age range
1650–1350 Ma
Mesoproterozoic
Ectasian
Calymmian
Paleoproterozoic
Statherian
Middle Riphean
Early Riphean
Late Karelian
1,6601,6401,6201,6001,5801,5601,5401,5201,5001,4801,4601,4401,4201,4001,3801,3601,340