Brian Frederick Windley
Contributor
Professor of Geology, University of Leicester, England. Author of The Evolving Continents.
Primary Contributions (10)
Archean Eon, the earlier of the two formal divisions of Precambrian time (about 4.6 billion to 541 million years ago) and the period when life first formed on Earth. The Archean Eon began about 4 billion years ago with the formation of Earth’s crust and extended to the start of the Proterozoic Eon…
READ MORE