Magnesium part of Earth's magnetic field engine

Earth’s magnetic field, which arises from convective flows in the planet’s core, known as the geodynamo, has existed for at least 3.4 billion years, meaning that the field-generating processes must have existed for that long as well. But what exactly those processes have looked like throughout Earth’s history, particularly early on, has been poorly understood. In a new study, researchers suggest that magnesium mineral formation in the core is a previously unrecognized but important piece of the puzzle.

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Lucas Joel

Lucas Joel was EARTH's 2015 summer intern.

Joel (www.lvjwriting.com) is a freelance science journalist. He has a master's in paleontology from the University of California, Riverside, and is currently based in Boulder, Colo. 

Tuesday, April 26, 2016 - 06:00