Huge amount of water in Earth’s mantle


Evidence [1][2][3][4] is growing for the theory [5] that claims that the amount of water in Earth’s “transition zone” (see the graphics above) is as much as the water contained in all oceans.

Why is this important? More water in the mantle may have implications for the mechanics of the plate tectonics. I highly recommend the tutorial Khan Academy video on plate tectonics.


[2] Chen, J.Inoue, T.Yurimoto, H. & Weidner, D. J. Effect of water on olivine- wadsleyite phase boundary in the (Mg,Fe)2SiO4 systemJ. Geophys. Res. Lett. 291875 (2002)

[3] Kohlstedt, D. L.Keppler, H. & Rubie, D. C. Solubility of water in the α, β and γ phases of (Mg,Fe)2SiO4Contrib. Mineral. Petrol. 123345357 (1996)

[4] Smyth, J. R. et al. Structural systematics of hydrous ringwoodite and water in Earth’s interior.Am. Mineral. 8814021407 (2003)

[5] Smyth, J. R. β-Mg2SiO4: a potential host for water in the mantle? Am. Mineral. 7210511055(1987)


About Suresh Emre

I have worked as a physicist at the Fermi National Accelerator Laboratory and the Superconducting Super Collider Laboratory. I am a volunteer for the Renaissance Universal movement. My main goal is to inspire the reader to engage in Self-discovery and expansion of consciousness.
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