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ScienceUpdated 15 min ago

Ancient rocks reveal when Earth's tectonic engine 'switched on'

Phys.org11 November 2026 at 5:40 am IST
Image: Phys.org

Scientists have identified a major turning point in Earth's geological history, when the processes shaping the planet's crust changed dramatically and began to resemble the plate tectonics we see today—about 2.5 billion years ago.

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