Archean (4000 Ma)

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Representation and status

Color CMYK
0/100/0/0 (Commission for the Geological Map of the World)
Color RGB
R: 240 G: 4 B: 127
Rank
chronostratigraphic Eon
Validity
Unit is in Use
Status
valid formal name
Status discussion

Nomenclature

Deutsch
Archaikum
Français
Archéen
Italiano
Archeano
English
Archean (4000 Ma)
Origin of the Name
archeo (Latin): old (see also Grand Canyon, Colorado).
Historical Variants
Archean (Dana 1876), Archaikum = Urzeit (Roesli 1948), Archaean, Archæan, Archeozoic

Hierarchy and sequence

Subordinate units
Units at roof

Age

Age at top
  • Archean
Age at base
  • Archean

Geography

Type area
Grand Canyon (Colorado, USA)

  • Neoarchean (2800 Ma)

    Rank
    chronostratigraphy
    Status
    informal term
    Age
    Archean
    Show details

  • Mesoarchean (3200 Ma)

    Rank
    chronostratigraphy
    Status
    informal term
    Age
    Archean
    Show details

  • Paleoarchean (3600 Ma)

    Rank
    chronostratigraphy
    Status
    informal term
    Age
    Archean
    Show details

  • Eoarchean (4000 Ma)

    Rank
    chronostratigraphy
    Status
    informal term
    Age
    Archean
    Show details
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