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Coupled 186Os and 187Os evidence for core-mantle interaction
1A. D. Brandon, R. J. Walker, J. W. Morgan, Isotope Geochemistry Laboratory, Department of Geology, University of Maryland, College Park, MD 20742, USA. J. W. Morgan, Department of Earth Resources, Colorado State University, Fort Collins, CO 80.
Science (New York, N.Y.)
|June 11, 1998
Summary
Osmium isotope analyses reveal that Hawaiian picritic lavas contain outer core material. This suggests some mantle plumes originate at the core-mantle boundary, distinguishable by their isotopic signatures.
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