In the new study, researchers sampled a different section of #rock from the belt and estimated its age using the previous two dating techniques — measuring how one radioactive element decays into another over time. The result: The rocks were about 4.16 billion years old.

#Earth formed about 4.5 billion years ago from a collapsing cloud of dust and gas soon after the solar system existed.

#geology

https://www.msn.com/en-us/science/earth-science/these-canadian-rocks-may-be-the-oldest-on-earth/ar-AA1HubbT