World’s oldest known oxygen oasis discovered

Science news reports that
isotope geochemists from the University of Tübingen have discovered layers in South Africa’s Pongola Basin which bear witness to oxygen production by bacteria as early as 2.97 billion years ago. That makes the Basin the earliest known home to oxygen-producing organisms — known as an oxygen oasis. The study has been published in the latest Nature Geoscience.

READ MORE:https://www.sciencedaily.com/releases/2018/01/180118084202.htm