At 2.9 Ga, Scientists Discover Ancient Traces of The Oldest Glaciers Ever Found

[Oxytropidoceras]

Scientists Discover Ancient Traces of The Oldest Glaciers Ever Found
by Clare Watson, Nature 12 July 2023

 

Science Alert article

 

PhysOrg article

 

The open access paper is:

 

Hofmann, A. and Bindeman, I.N., 2023. Earth's first glaciation at 2.9 Ga
revealed by triple oxygen isotopes. Geochemical Perspectives Letters, 26, pp.20-24.

 

Yours,

 

Paul H.