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archean

/ɑːrˈkiː.ən/

翻译: 指太古宙(Archaean Eon)的,即地球最早的地质年代之一;也泛指极其古老、原始或最初的事物。, 太古宙,地质年代中的一个宙,约在40亿至25亿年前,是地壳形成和早期生命出现的时期。

2 个条目

adjective

/ɑːrˈkiː.ən/formalscientific已废弃
  • zh指太古宙(Archaean Eon)的,即地球最早的地质年代之一;也泛指极其古老、原始或最初的事物。

An obsolete adjective referring to the earliest geological eon (the Archean Eon), or something belonging to that ancient time; now primarily used as a proper noun in geology.

  1. Geological eonC2formalscientific

    Relating to the Archean Eon, the second major division of Precambrian time, spanning from about 4 billion to 2.5 billion years ago, characterized by the formation of the Earth's earliest known rocks and the emergence of primitive life.

    zh太古宙

    • The Archean rocks in this region contain some of the oldest minerals on Earth.
    • Geologists study Archean formations to understand the early development of the planet's crust.
    • Fossil evidence from the Archean eon is extremely rare and difficult to find.

    同义词archaeanarchaeozoicarcheozoic

noun

/ɑːˈkiː.ən/C2formalscientific
  • zh太古宙,地质年代中的一个宙,约在40亿至25亿年前,是地壳形成和早期生命出现的时期。

A proper noun referring to a specific geological eon, the Archean Eon, which spans from about 4.0 to 2.5 billion years ago, representing the time when the Earth's crust formed and early life appeared.

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  1. Geological eonC2formalscientific

    The earlier of the two divisions of the Precambrian supereon, spanning from about 4 billion to 2.5 billion years ago, characterized by the formation of the Earth's crust and the appearance of the first life forms.

    zh太古宙

    • The Archean eon saw the formation of the first stable continents.
    • Fossils from the Archean are extremely rare due to metamorphism.
    • The atmosphere during the Archean was largely devoid of free oxygen.

    同义词archaeanarchaeozoicarcheozoic