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Composition of Earth’s mantle revisited thanks to research at Argonne’s Advanced Photon Source | by Argonne National Laboratory
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Composition of Earth’s mantle revisited thanks to research at Argonne’s Advanced Photon Source

We live atop the thinnest layer of the Earth: the crust. Below is the mantle (red), outer core (orange), and finally inner core (yellow-white). The lower portion of the mantle is the largest layer – stretching from 400 to 1,800 miles below the surface. Research at Argonne’s Advanced Photon Source recently suggested the makeup of the lower mantle is significantly different from what was previously thought. Image by Johan Swanepoel/Shutterstock. Read more »

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Taken on June 17, 2014