Archean
Archean is a universe in the geological age. The Archean began at the end of the late reign of the inner solar system (the isotopic dating of the lunar rock was determined to be 3.84 billion years ago), and the earth's rock began to exist steadily and could be retained until now. The Archean end of the massive oxidation event of 2.5 billion years ago, the methane-based reductive original Archean atmosphere transformed into oxygen-rich oxidative Proterozoic atmosphere and led to the first 300 million years of Earth's first Ice Age - Huron Ice Age. In the Archean period there are bacteria and low blue bacteria present. The Archean belongs to the Precambrian, the last universe is the ancient universe, the next universe is the Proterozoic. Archean includes the beginning of the ancient times, the ancient ancient times, the ancient Archean, the new Archean. ...