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Hesperian : what is it then?

A Martian Epoch!
The geology of the Planet Mars is divided into three main Epochs (or ages):

  • Amazonian 0Ga - 1.8Ga
  • Hesperian 1.8Ga - 3.5Ga
  • Noachian 3.5Ga - 4.6Ga
Ga = 1 Billion years

Image : Valles Marineris

It was during the upper Hesperian that layered deposits were put down in the Valles Marineris rift valley (pictured above).

Now you know.

 
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