Ancient rocks reveal when Earth's tectonic engine 'switched on'
Summary
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.
Description from Phys.
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Ancient rocks reveal when Earth's tectonic engine 'switched on'
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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