While we can't see deep into the Earth, geologists have a variety of neat tricks to create a picture of our Earth's layers. Just like a kid's jawbreaker, Earth consists of layers that differ in ...
Only the hottest, most buoyant mantle plumes draw from a primordial reservoir deep in Earth, a geochemist has concluded. Earth's mantle -- the layer between the crust and the outer core -- is home to ...
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