Cihna sané  anyar punika nyinahang segarané minab sampun telas ngawit kawéntenanyané duk 4,4 Ga. Ri tatkala pangawit eon Archean, dane sareng sami sampun nangkebin wantah asibak gumine puniki.
Recent evidence suggests the oceans may have begun forming as early as 4.4 Ga. By the start of the Archean eon, they already covered much of the Earth.