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Science 16 May 2008:
Vol. 320. no. 5878, pp. 883 - 884
DOI: 10.1126/science.1158378
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Perspectives

GEOCHEMISTRY:
The Origin of Alkaline Lavas

Yaoling Niu

Alkali-metal-rich lavas on ocean islands are produced from veins that form in oceanic mantle lithosphere as it ages.

Department of Earth Sciences, Durham University, Durham DH1 3LE, UK. E-mail: yaoling.niu{at}durham.ac.uk

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Science. ISSN 0036-8075 (print), 1095-9203 (online)