One of the central features of plate tectonics is the formation of new crust at mid-ocean ridges. Part of the spreading process that drives continents […]
Category: Earth science
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The missing 500 million: Cosmic bombardment melted Earth’s first crust
Earth is the only planet we know of with buoyant, silica-rich continents. But, despite decades of research, geologists still don’t agree on how they formed. […]