Last Updated
：2025/11/20
Archaean
Adjective
not-comparable
Japanese Meaning
(地質学用語) 約38億年前から25億年前にかけてのエオアーキアン、パレオアーキアン、メソアーキアン、ネオアーキアンの時代を含む地質年代に関連し、大気中に酸素がほとんど存在せず、最初の大陸や海洋の形成、単純な生命の出現が特徴である期間に関するもの
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(geology) Of, or relating to the geologic eon from about 3,800 to 2,500 million years ago; comprises the Eoarchean, Paleoarchean, Mesoarchean and Neoarchean eras; marked by an atmosphere with little oxygen, the formation of the first continents and oceans and the emergence of simple life.
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Archaean
The research team discovered Archaean rock formations that contained some of the earliest evidence of microbial life.
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The research team discovered Archaean rock formations that contained some of the earliest evidence of microbial life.
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