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News and Views
Nature 436, 1095-1096 (25 August 2005) | doi:10.1038/4361095a; Published online 24 August 2005
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Earth science: Helium not in store
William M. White1
Abstract
The ratio of helium isotopes in some oceanic volcanoes seemed to demand a reservoir of virgin primordial gas in the Earth's mantle. In fact, that might not be necessary — a relief for other geophysical models.
In the 4.5 billion years of its existence, Earth has been continually losing helium through the degassing of rocks from its interior as they melt during volcanic processes.
- William M. White is in the Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, New York 14853, USA.
Email: white@geology.geo.cornell.edu
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