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Earth's deep water reservoir

A tiny sample of a mineral included in a diamond confirms predictions from high-pressure laboratory experiments that a water reservoir comparable in size to all the oceans combined is hidden deep in Earth's mantle. See Letter p.221

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Figure 1: A view of the deep Earth.

British Library/Robana via Getty

Figure 2: A diamond with a ringwoodite inclusion.

Richard Siemens/Univ. Alberta


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Correspondence to Hans Keppler.

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Keppler, H. Earth's deep water reservoir. Nature 507, 174–175 (2014).

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