bn:00042441n
Noun Named Entity
Categories: All articles containing potentially dated statements, Hadean, Precambrian geochronology, Articles with short description
EN
Hadean  Hadean eon  Hadean time  Hadean aeon  Priscoan
EN
The earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks (about 3,800 million years ago); no evidence of life WordNet 3.0
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EN
The earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks (about 3,800 million years ago); no evidence of life WordNet 3.0 & Open English WordNet
The Hadean is a geologic eon of Earth history preceding the Archean. Wikipedia
First eon of geological time, beginning with the formation of the Earth about 4.6 billion years ago Wikidata
The eon before 4,000 Ma. Wiktionary
The geologic eon from about 4,600 to 3,800 million years ago; marked by the formation of the first rocks. Wiktionary
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