Type
Era
Age range
2800–2500 Ma
Paleoproterozoic
Siderian
Neoarchean
Mesoarchean
Early Karelian
Late Lopian
Middle Lopian
2,8002,7802,7602,7402,7202,7002,6802,6602,6402,6202,6002,5802,5602,5402,5202,500