Ancient crystals hold clues about why Earth's crust shattered like a crème brûlée 3.8 billion years ago - Livescience.com

The oldest evidence of tectonic plates are sealed in ancient crystals

Tiny crystals unearthed in South Africa contain evidence of a sudden transition on the planet's surface 3.8 billion years ago. These crystals, each no bigger than a grain of sand, show that around t… [+4586 chars]

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