Geologic Eon - Energy Education

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Geologic eon

A geologic eon is the largest unit of time for the geologic time scale (Figure 1). Geologic eons are also referred to as "eonothems" (the chronostratigraphic name) or simply "eons". Eons are hundreds, even thousands, of years in length. Eons are made up with shorter eras.[1]

Currently the eons are:[1]

  • Phanerozoic (the current eon)
  • Proterozoic (Precambrian)
  • Archean (Precambrian)
Figure 1. The ICS Chronostratigraphic Chart[2]

For Further Reading

  • Geologic time scale
  • Geologic era
  • Geologic period
  • Stratigraphy
  • Or explore a random page

References

  1. ↑ 1.0 1.1 International Commission on Stratigraphy."Chapter 9. Chronostratigraphic units" Accessed Nov.12, 2018 [Online]. Available: http://www.stratigraphy.org/upload/bak/chron.htm
  2. ↑ International Commission on Stratigraphy."International Chronostratigraphic Chart v2018" Accessed Nov.8, 2018 [Online]. Available: http://www.stratigraphy.org/index.php/ics-chart-timescale
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