From the journal Science</: Oceans of water trapped in Earth’s mantle.
From Northwestern University (h/t to Harold Ambler)
Water bound in mantle rock alters our view of the Earth’s composition
Researchers from Northwestern University and the University of New Mexico report evidence for potentially oceans worth of water deep beneath the United States. Though not in the familiar liquid form — the ingredients for water are bound up in rock deep in the Earth’s mantle — the discovery may represent the planet’s largest water reservoir.
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