Archean
= Archean
{c}
{wiki}
The geological eon from about 4.0 to 2.5 billion years ago. <Continental crust> composition and tectonic processes varied during this interval.
= Archean
{c}
{wiki}
The geological eon from about 4.0 to 2.5 billion years ago. <Continental crust> composition and tectonic processes varied during this interval.