释义 |
Hadean eon ThesaurusNoun | 1. | Hadean eon - 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 lifeHadean, Hadean aeon, Hadean time, Priscoan, Priscoan aeon, Priscoan eon | EncyclopediaSeeHadeanHadean eon Related to Hadean eon: Archean eon, Proterozoic eon, Phanerozoic eonSynonyms for Hadean eonnoun 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)Synonyms- Hadean
- Hadean aeon
- Hadean time
- Priscoan
- Priscoan aeon
- Priscoan eon
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