Researchers have found the oldest piece of the Earth’s crust that has been discovered yet, a 4.4 billion-year-old piece of zircon. The crystal helps confirm a theory about when the Earth’s crust formed and provides new insight into planet formation and how a planet can become habitable.
The research was led by John Valley, from the University of Wisconsin-Madison, and the crystal was pulled from the Jack Hills rock outcrop in Australia, an area well-known as a source for zircons. Valley and his team determined the mass of iron atoms in the zircon sample to determine the age and temperature history of the crystal.
Read more here.

Researchers have found the oldest piece of the Earth’s crust that has been discovered yet, a 4.4 billion-year-old piece of zircon. The crystal helps confirm a theory about when the Earth’s crust formed and provides new insight into planet formation and how a planet can become habitable.

The research was led by John Valley, from the University of Wisconsin-Madison, and the crystal was pulled from the Jack Hills rock outcrop in Australia, an area well-known as a source for zircons. Valley and his team determined the mass of iron atoms in the zircon sample to determine the age and temperature history of the crystal.

Read more here.

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