Researchers have detected a previously unknown layer of partially molten rock beneath Earth’s crust
Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. . The discovery could help scientists learn more about the movements of Earth’s tectonic plates, which not only create mountains and earthquakes, but also contributed to forming environments with the right chemical and physical conditions to support life on early Earth.
“But what we found is that even where the melt fraction is quite high, its effect on mantle flow is very minor.” In the mantle, convection, or the transfer of heat, takes place as hot, less dense material rises and cooler, denser material sinks. The researchers believe the presence of solid rocks and convection contribute to plate motion.
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