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Hadean

Hierarchy:Precambrian
 Hadean
Classification:Eon (as per International Commission on Stratigraphy)
Top:4000 Ma
Base:~4567 Ma
Preceeds:Archean Eoarchean
Primary Divisions:Early ImbrianNectarianBasin GroupsCryptic
FGDC code:>
The first geologic eon of the Earth, it begins with the formation of the earth and runs until 4 billion years ago.

It is characterised by heavy asteroid bombardment and, slowly, cooling of the surface and the build up of water on the surface of the Earth.

07679190014988600611678.jpg
An artistic conception of the early Earth, showing a surface pummeled by large impacts, resulting in extrusion of deep seated magma onto the surface. At the same time, distal portions of the surface could have retained liquid water. Credit: Simone Marchi/SwRI.
 

Geologic Events

Event NameTypeAgeArea
Naiper orogenyOrogeny4000 ± 200 MaAntarctica
Late Heavy Bombardment (concludes)Impact Event~4100 - ~3800 MaGlobal
First life (concludes)Evolutionary event~4280 - ~3500 MaGlobal
First oceans (concludes)Major Climatic Event~4410 MaGlobal


Overview of geological time

List all geological events
 
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