Geochemical effects of dynamic melting beneath ridges: Reconciling major and trace element variations in Kolbeinsey (and global) mid-ocean ridge basalt

• Published in: Journal of Geophysical Research: Solid Earth
• Main Authors: Devey, Colin W., Garbe-Schönberg, C.-Dieter, Stoffers, Peter, Chauvel, C., Mertz, D. F.
• Format: Article in Journal/Newspaper
• Language: English
• Published: AGU 1994
• Subjects: Kolbeinsey; Kolbeinsey Ridge; Iceland
• Online Access: https://oceanrep.geomar.de/id/eprint/3741/; https://oceanrep.geomar.de/id/eprint/3741/1/Devey_Geochemical%20effects.pdf; http://www.agu.org/pubs/crossref/1994/93JB03364.shtml; https://doi.org/10.1029/93JB03364

Zero-age basalts dredged from the Kolbeinsey Ridge directly north of Iceland are mafic quartz tholeiites (MgO 6-10 wt. %), strongly depleted in incompatible elements. Fractionation-corrected Na2O contents ('Na(sub 8)') are amongst the lowest found on the global ridge system, implying that...