It seems that there might be a lot water tied up in ringwoodite, deep in the Earth's Mantle. The latest issue of Nature finds some more oxygen and hydrogen tied up with iron. In this case, there is more oxygen than hydrogen, so the area at the core boundary could release free oxygen. The authors speculate that this might be involved in some of our planet's "oxygenation events."
Friday Cat Blogging - 28 April 2017
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