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Definition for archaean (2 of 2)
Example sentences from the Web for archaean
Again we must refrain from following in detail the development of this new world of life which branches off in the Archaean ocean.The Story of Evolution|Joseph McCabe
They are known to be pre-Jurassic, but whether they are Palaeozoic or Archaean is uncertain.
It was laid down close to the igneous Archaean rocks when Mother Earth was in her girlhood and water first began to flow.Among the Forces|Henry White Warren
Their lithological characteristics and the total absence of all organic remains point to the Archaean period.
This place is about five hundred yards west of the bridge in an alcove in the Archaean Rock which forms the Canyon wall.I Married a Ranger|Dama Margaret Smith