Reconsidering the origins of isotopic variations in Ocean Island Basalts : insights from fine-scale study of Sao Jorge Island, Azores archipelago

• Main Authors: Millet, M. A., Doucelance, R., Baker, J. A., /Schiano, Pierre
• Format: Text
• Language: English
• Published: 2009
• Subjects: OIB; Isotope; Mantle plume; Mixing trends; Azores archipelago; Shallow-level interaction; Jorge Island; Mid-Atlantic Ridge; Ocean Island
• Online Access: https://www.documentation.ird.fr/hor/fdi:010046317

New major and trace element and Sr-Nd-Pb isotope data have been determined for 21 basaltic samples from Sao Jorge Island, Azores archipelago. Samples can be separated into two groups best identified in a plot of Pb-208/Pb-204 versus Pb-206/Pb-204 where they form two sub-parallel mixing arrays. Lavas...