Neoarchean
Neoarchean
Hierarchy: | Precambrian Archean Neoarchean | ||||||||
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Classification: | Era (as per International Commission on Stratigraphy) | ||||||||
Top: | 2500 Ma | ||||||||
Base: | 2800 Ma | ||||||||
Preceeds: | Proterozoic Siderian | ||||||||
Follows: | Mesoarchean | ||||||||
GSSP: | Defined chronometrically | ||||||||
Fossil Record Data via PaleoBioDB Taxa Count Key First appearance Extinction First appearance and extinction Related precursors |
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Stabilization of most modern cratons; possible mantle overturn event. Insell Orogeny, 2650 ± 150 Ma. Abitibi greenstone belt in present-day Ontario and Quebec begins to form, stabilizes by 2600 Ma.
Geologic Events
Event Name | Type | Age | Area |
---|---|---|---|
Insel orogeny | Orogeny | 2650 ± 150 Ma | Antarctica |
Algoman/Kenoran orogeny (concludes) | Orogeny | ~2700 - ~2500 Ma | North America |
Pongola glaciation (concludes) | Glaciation Event | ~2900 - ~2780 Ma | Global |
Lopian orogeny (concludes) | Orogeny | ~2900 - ~2800 Ma | Europe |
Great Oxygenation Event (concludes) | Major Climatic Event | ~3500 - ~850 Ma | Global |
Overview of geological time
List all geological events