Dynamic melting of the Iceland plume

The most MgO-rich lavas have the most depleted incompatible element ratios and among the least radiogenic lead isotopes recorded in Atlantic mid-ocean-range basalts, highlighting a decoupling of the major and trace element characteristics expected of plume melts. A model provides insight into the pr...

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Bibliographic Details
Published in:Nature (London) 1991-05, Vol.351 (6323), p.201-206
Main Authors: Elliott, T. R, Hawkesworth, C. J, Grönvold, K
Format: Article
Language:English
Subjects:
Basalt
Crystalline rocks
Earth sciences
Earth, ocean, space
Exact sciences and technology
Geology
Igneous and metamorphic rocks petrology, volcanic processes, magmas
Isotope geochemistry
Isotope geochemistry. Geochronology
Marine
Plate tectonics
Trace elements
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Summary:The most MgO-rich lavas have the most depleted incompatible element ratios and among the least radiogenic lead isotopes recorded in Atlantic mid-ocean-range basalts, highlighting a decoupling of the major and trace element characteristics expected of plume melts. A model provides insight into the processes governing melt compositions at spreading ridges.
ISSN:0028-0836
1476-4687
DOI:10.1038/351201a0