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Comment on “Steady-state 226Ra/ 230Th disequilibrium in mantle minerals: Implications for melt transport rates in island arcs” by M.D. Feineman and D.J. DePaolo [Earth Planet. Sci. Lett. 215 (2003) 339–355]
Journal article   Peer reviewed

Comment on “Steady-state 226Ra/ 230Th disequilibrium in mantle minerals: Implications for melt transport rates in island arcs” by M.D. Feineman and D.J. DePaolo [Earth Planet. Sci. Lett. 215 (2003) 339–355]

R George, M Reagan, S Turner, J Gill and B Bourdon
Earth and planetary science letters, Vol.228(3), pp.563-567
2004
DOI: 10.1016/j.epsl.2004.10.021

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Abstract

In summary, we commend F&D for exploring the possible role of diffusion in generating 226Ra excesses and we do not doubt that such processes occur. However, for the reasons outlined above, we consider this mechanism unlikely to be the principle origin of the large 226Ra excesses observed in low-K basalts and basaltic andesites at arc front volcanoes. © 2004 Elsevier B.V. All rights reserved.

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