Evidence for primordial water in Earth’s deep mantle

Shaking out water's dusty origin Where did Earth's water come from? Lavas erupting on Baffin Island, Canada, tap a part of Earth's mantle isolated from convective mixing. Hallis et al. studied hydrogen isotopes in the lavas that help to “fingerprint” the origin of water from what coul...

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Bibliographic Details
Published in:Science
Main Authors: Hallis, Lydia J., Huss, Gary R., Nagashima, Kazuhide, Taylor, G. Jeffrey, Halldórsson, Sæmundur A., Hilton, David R., Mottl, Michael J., Meech, Karen J.
Other Authors: National Aeronautics and Space Administration
Format: Article in Journal/Newspaper
Language:English
Published: American Association for the Advancement of Science (AAAS) 2015
Subjects:
Baffin Island
Canada
Baffin
Online Access:http://dx.doi.org/10.1126/science.aac4834
https://www.science.org/doi/pdf/10.1126/science.aac4834
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Summary:Shaking out water's dusty origin Where did Earth's water come from? Lavas erupting on Baffin Island, Canada, tap a part of Earth's mantle isolated from convective mixing. Hallis et al. studied hydrogen isotopes in the lavas that help to “fingerprint” the origin of water from what could be a primordial reservoir. The isotope ratios for the Baffin Island basalt lavas suggest a pre-solar origin of water in Earth, probably delivered by adsorption onto dust grains. Science , this issue p. 795

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