Rubidium and cesium in the earth and the moon

Details Rubidium and cesium in the earth and the moon Rubidium and cesium in the earth and the moon

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993gecoa..57.3785j&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 57, no. 15, p. 3785-3792.

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1

Chemical Composition, Earth Mantle, Geochemistry, Lunar Composition, Cesium, Mass Distribution, Rubidium

Scientific paper

The purpose of the study is to provide an alternative perspective on both the mass balance issue and on the issue of secular change in the Rb-Cs ratio in the earth mantle. In particular, it is argued that the apparent secular change in the Rb/Cs ratio may be simply an artifact of alteration of older rocks through weathering and/or metamorphism subsequent to formation. It is also shown that there is not necessarily a need for a hidden, undepleted reservoir, and the consistency of this result with other mass calculations is explored. New methods for estimating the Rb/Cs ratio of the bulk silicate earth are suggested.

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