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priscoan

/ˈprɪs.koʊ.ən/

翻译: 冥古宙是地球历史上最早的一个地质宙,大约从45.6亿年前地球形成开始,到约38亿年前最古老的已知岩石出现为止,这一时期没有生命存在的证据。

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noun

/ˈprɪs.koʊ.ən/C2formalscientific
  • zh冥古宙是地球历史上最早的一个地质宙,大约从45.6亿年前地球形成开始,到约38亿年前最古老的已知岩石出现为止,这一时期没有生命存在的证据。

A proper noun referring to the earliest eon in Earth's history, spanning from the initial formation of the planet about 4.6 billion years ago to the age of the oldest known rocks around 3.8 billion years ago, a period with no evidence of life.

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  1. Earliest geological eonC2formalscientific

    The earliest eon in Earth's history, spanning from the planet's initial formation about 4,600 million years ago until the appearance of the oldest known rocks around 3,800 million years ago, a period with no evidence of life.

    zh冥古宙

    • The Priscoan eon represents the dawn of our planet's geological timeline.
    • Rocks from the Priscoan eon are extremely rare and difficult to study.
    • Scientists theorize that the Earth's crust began to solidify during the Priscoan.

    同义词azoic