This formation also contains evidence of the biggest known meteorite impact on earth [1].
2015 - Brown - Exploring the Evolution of Oxygen on the Early Earth: Constraining the Evolution of Oxidative Phosphorylation Through the Utilization of Uranium Isotopes https://earth.yale.edu/sites/default/files/files/Brown_Christian_Thesis.pdf ↩
Barberton geological field mapping report 2012 http://adammbedzi.yolasite.com/resources/Barberton%20Geological%20Field%20Mapping%202012.pdf ↩