Scientists Found an Ancient Tectonic Plate Buried Deep Inside the Earth’s Mantle – ExtremeTech

Plate tectonics — the slow movement of the Earth’s continents across the globe, and their interactions with each other — is a relatively new discovery, having only been broadly accepted in the geologic community since the mid-1960s. In addition to studying the seven large plates that make up the major continents on Earth, some scientists study the remains of vanished plates that were subducted under the edge of a continent and driven down into the mantle. Now, one group studying northwest North…

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