In northern China, scientists have found what may be the 2 billion-year-old birthmarks of Earth’s first supercontinent – Science X

Far beneath the city of Dongshen in northern China, we have discovered what may be the 2 billion-year-old birthmarks of Earth’s first supercontinent.
An ancient dipping structure in the planet’s crust appears to be a trace of an early collision between two continental masses like the one that created the Himalayasand may record the origin of the global system of plate tectonics that persists today.
When did plate tectonics begin?
The theory of plate tectonics is one of the key scientific adv…

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