Lunar geologic timescale

From Academic Kids

The lunar geologic timescale divides the history of Earth's Moon into six generally recognized geologic periods:

The values for these dates remain in some dispute, as the divisions are based on the dates when various significant lunar geological events occurred and it is difficult to pinpoint them exactly.

In many lunar highland regions, planetologists cannot currently distinguish between Nectarian and Pre-Nectarian materials. These deposits are called Pre-Imbrian age materials, which encompasses both time periods.

<timeline> ImageSize = width:800 height:100 PlotArea = left:15 right:15 bottom:20 top:5 AlignBars = early

Period = from:-4550 till:0 TimeAxis = orientation:horizontal ScaleMajor = unit:year increment:500 start:-4500 ScaleMinor = unit:year increment:100 start:-4500

PlotData=

align:center textcolor:black fontsize:8 mark:(line,black) width:25 shift:(0,-5)
text:Copernician from:-1100 till:0
text:Eratosthenian from:-3200 till:-1100
text:Upper_Imbrian from:-3800 till:-3200
text:Lower~Imbrian from:-3850 till:-3800 shift:(0,25)
text:Nectarian from:-3920 till:-3850 shift:(0,5)
from:start  till:-3920  text:Pre-Nectarian

</timeline> de:Lunare Zeitskala ja:月の地質年代尺度

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