What Cracked the Earth’s Outer Shell and Started its Plate Tectonics?

What Cracked the Earth’s Outer Shell and Started its Plate Tectonics?
By Evan Gough

Earth’s lithosphere is made up of seven large tectonic plates and a number of smaller ones. The theory of plate tectonics that describes how these plates move is about 50 years old. But there’s never really been an understanding of how this system developed, and how the Earth’s shell split into separate plates and started …

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July 25, 2020 at 05:00AM
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