Age of Earth’s crust confirmed
![zircon from Jack Hills, Australia](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2014/02/Jack_Hills_zircon_free.png?fit=860%2C460&ssl=1)
Scientists have confirmed a contentious date of the Earth’s crust by tracking how decaying isotopes travel through zircon (shown), the Earth’s oldest mineral.
John Valley/Univ. of Wisconsin
Scientists have confirmed a contentious date of the Earth’s crust by tracking how decaying isotopes travel through zircon (shown), the Earth’s oldest mineral.
John Valley/Univ. of Wisconsin