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Era

Neoarchean

Archean

The fourth and final era of the Archean eon, spanning about 2.8 to 2.5 billion years ago and ending at the start of the Proterozoic. By this era plate tectonic activity may have resembled that of the modern Earth, and cyanobacteria driven photosynthesis was beginning the atmospheric changes that would culminate in the Great Oxidation Event early in the following eon. 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
Rank
Era 1
Start (Million Years Ago)
2800 1
End (Million Years Ago)
2500 1
Key Event
By the Neoarchean, plate tectonic activity may have been similar to that of the modern Earth. 1
Connections

Anticipated By

Mesoarchean, Eras

Has Geologic Rank

Geologic Era, Concepts

In Discipline

Geochronology, Disciplines
Sources
1. Wikipedia: Archean
Wikipedia
  • Lead section
    The Archean (IPA: ar-KEE-ən, also spelled Archaean or Archæan), in older sources sometimes called the Archaeozoic, is the second of the four geologic eons of Earth's history, preceded by the Hadean Eon and followed by the Proterozoic and the Phanerozoic.
  • Tectonics section
    By the Neoarchean, plate tectonic activity may have been similar to that of the modern Earth.
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