The American researchers concluded that in the mantle layer, that lies between the crust and the core, there are vast reserves of water, probably around three times the total volume of water of all oceans on the surface of our planet.
This reservoir of water, which seems to be stable over time, lies at a depth of 700 kms beneath the planet’s surface, in the intermediate zone between the upper and the lower mantle.
The researchers of the university of Mexico, estimate that water is molecularly trapped in a mineral called ringwoodite.Ringwoodite is a high-pressure polymorph of olivine (a magnesium iron silicate) that is formed at high temperatures and pressures of the Earth’s mantle.
The researchers believe that similar thing is happening around the world and are already planning to expand the study to other countries too.
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