The chicken-and-egg problem of plate tectonics

Plate tectonics created our planet’s ocean basins and mountain ranges, yet scientists still puzzle over how it began. Now, a group of researchers have proposed that mantle plumes could have done the trick. Learn more in my story for Science.

Scientists say that a mantle plume could have created the world's first subduction zone, initiating plate tectonics. (Credit: Ewalde1 via Wikimedia Commons)
Scientists say that a mantle plume could have created the world’s first subduction zone, initiating plate tectonics. (Credit: Ewalde1 via Wikimedia Commons)
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