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Science 19 February 1965:
Vol. 147. no. 3660, pp. 858 - 860
DOI: 10.1126/science.147.3660.858
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Articles

Terrestrial Ratio of Potassium to Rubidium and the Composition of Earth's Mantle

Paul W. Gast 1

1 Department of Geology and Geophysics, University of Minnesota, Minneapolis

The ratios of potassium to rubidium determined for a series of oceanic volcanic rocks suggest that the K/Rb ratio of the upper mantle exceeds 1500. The similarity between this inferred K/Rb ratio for the mantle and that found in some achondritic meteorites suggests a similar overall composition for these materials.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Geochemical evolution of the suboceanic mantle.
G. N. HANSON (1977)
Journal of the Geological Society 134, 235-253
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Potassium, Rubidium, Strontium, Barium, and Rare-Earth Concentrations in Lunar Rocks and Separated Phases.
J. A. Philpotts, J. A. Philpotts, and C. C. Schnetzler (1970)
Science 167, 493-495
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Fractionation of Potassium/Rubidium by Amphiboles: Implications Regarding Mantle Composition.
S. R. Hart, S. R. Hart, and L. T. Aldrich (1967)
Science 155, 325-327
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Potassium:Rubidium Ratio in Ultramafic Rocks: Differentiation History of the Upper Mantle.
A. M. Stueber and V. R. Murthy (1966)
Science 153, 740-741
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Potassium, Rubidium, Strontium, Thorium, Uranium, and the Ratio of Strontium-87 to Strontium-86 in Oceanic Tholeiitic Basalt.
M. Tatsumoto, M. Tatsumoto, C. E. Hedge, and A. E. J. Engel (1965)
Science 150, 886-888
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