Eoarchean

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Eoarchean era

(millions of years ago)

<timeline> ImageSize = width:175 height:355 PlotArea = left:40 right:5 bottom:105 top:45 AlignBars = justify

Period = from:3500 till:3800 TimeAxis = orientation:vertical ScaleMajor = unit:year increment:100 start:3500 ScaleMinor = unit:year increment:25 start:3500

Colors =

 id:eon  value:rgb(1,0.7,1)  legend:Archaean_eon  # light purple
 id:era  value:rgb(1,1,0.7)  legend:Eoarchean_era   # light yellow
 id:period  value:rgb(1,0.7,0.7)  legend:Period  # light red
 id:black  value:black

Legend = left:15 top:60

BarData =

 bar:eon
 bar:era
 bar:period

PlotData=

 width:80 align:center textcolor:black mark:(line,black)

 bar:eon color:eon

 from:start  till:end  width:100
 at:3550  mark:none  text:Archaean~(2500-3800)

 bar:era color:era

 from:3600  till:3800  text:Eoarchean~(3600-3800)

 bar:period color:period

TextData =

 tabs:(25-left)

 pos:(15,350)
 text:"Preceded by:"
 text:^Hadean eon

 pos:(15,95)
 text:"Followed by:"
 text:^Paleoarchean era

</timeline> (expand)

The Eoarchean (IPA: /ˌiːəʊɑːˈkiːən/, also spelled Eoarchaean) is an era in the geologic timescale lasting from 3800 Ma to 3600 Ma (million years ago). It is the first part of the Archaean Eon, preceded by the Hadean eon. In chronostratigraphy, its zone rank is an erathem.