The oldest eon, from the planet's formation to the appearance of the first solid continental crust in the rock record. Named for Hades: a young Earth of magma oceans and relentless impacts, hostile enough that almost nothing from it survived to be read today. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Facts
Start (Million Years Ago)Earth's formation; the conventional start of geologic time itself, so there is no older bound to date against. End (Million Years Ago) Key EventEarth's accretion and differentiation into core, mantle and crust; no confirmed rock record survives from most of this eon. 1 Connections
Has Geologic Rank
In Discipline
Source Geologic Time Scale (Wikipedia)
Precursor To
Sources
1. Geologic Time Scale (Wikipedia)
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