| 释义 |
Hadean aeon
基本英英
英Noun:the earliest eon in the history of the Earth from the first accretion of planetary materialaround 4；600 million years agountil the date of the oldest known rocksabout 3；800 million years ago；no evidence of life
Noun:
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 |