By zapping single atoms of lead in a tiny zircon crystal from Australia, researchers have confirmed the crystal is the oldest rock fragment ever found on Earth — 4.4 billion years old.
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Confirmed: Oldest Fragment of Early Earth is 4.4 Billion Years Old
By zapping single atoms of lead in a tiny zircon crystal from Australia, researchers have confirmed the crystal is the oldest rock fragment ever found on Earth — 4.4 billion years old.
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