Earliest geochemical evidence of plate tectonics found in 3.8-billion-year-old crystal

Creative destruction: a thinner ocean plate sides under a continental plate, melting and recycling the ocean crust into the Earth’s interior and birthing volcanoes in this illustration of subduction, a consequence of modern plate tectonics. Credit: Nikolas Midttun A handful of ancient zircon crystals found in South Africa hold the oldest evidence of subduction, a … Read more