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Noachian

Noachian

9.9
Relating to an early time on Mars when many craters formed and water may have flowed
  • adjective
  • /noʊˈeɪkiən/
  • Specialized
translation icon : noéico
  • Geologists believe that the ancient landscapes formed during the Noachian epoch provide crucial insights into Mars's early climate.

Examples

  • The presence of ancient river valleys indicates that liquid water was likely abundant during the Noachian period on Mars.

  • " We're heading for the Noachian outcrops."

    Blog text (4)
  • By studying this relationship between the ancient Noachian Period terrain at Endeavour Crater, estimated to be 3.7 to 4.1 billion years old, and the dominant sedimentary rock layer the rover has studied for the first 7.5 years of its mission, the MER scientists are working to write the geologic story of the area.

    Blog text (4)
  • Recent studies suggest that the Noachian geological features on Mars were shaped by intense volcanic activity and water flow.

Compounds

Noachian deluge
  • Literature
9.9

A great flood in the Bible during Noah's time

Surface Forms

Noachian positive

Morphology

Noachian = Noah (semi-transparent) = Noach + ian

Formally derived from the name Noah + '-ian', but the technical geological sense (a Mars epoch) is specialized and not directly inferable by an average learner.

Etymology

Noachian uses the same parts, Noah and -ian, and researchers applied it to an early time on Mars because that age looks very old and shows signs of water, like a 'flooded' past. So on Mars, Noachian means the very early period when many impacts and ancient water shaped the surface.