The age and distribution of mantle heterogeneity along the Mid-Atlantic Ridge (31–41ºN)

• Main Authors: Laure Dosso A, Henri Bougault B, Charles Langmuir C, Claire Bollinger A, Olga Bonnier A
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 1999
• Subjects: Hayes; Mid-Atlantic Ridge; North Atlantic
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.501.9925; http://www.people.fas.harvard.edu/~langmuir/Papers/Dosso EPSL 99.pdf

New trace element and isotopic data for basalts from the mid-Atlantic ridge between 31 and 41ºN allow a better description of the geochemical gradient south of the Azores triple junction, and the systematics of mantle source heterogeneity. There is a long wavelength enrichment in incompatible trace...