Shallow level interactions and geochemistry of oceanic island basalt : implications on the acquisition of the isotopic fingerprints and on mantle topology

• Main Author: Millet, Marc-Alban
• Other Authors: Laboratoire Magmas et Volcans (LMV), Observatoire de Physique du Globe de Clermont-Ferrand (OPGC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), Université Blaise Pascal - Clermont-Ferrand II, Pierre Schiano
• Format: Doctoral or Postdoctoral Thesis
• Language: French
• Published: HAL CCSD 2007
• Subjects: mantle plume; shallow-level interactions; Azores; Cape Verde; endmember; common component; OIB; isotope; panache mantellique; Interactions de faibles profondeurs; Açores; Cap Vert; pôle de mélange; composant commun; [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology; [SDE.MCG]Environmental Sciences/Global Changes; Jorge Island
• Online Access: https://theses.hal.science/tel-00718419; https://theses.hal.science/tel-00718419/document; https://theses.hal.science/tel-00718419/file/2007CLF21794.pdf

Systematic measurements of Sr-Nd-Pb isotopic compositions in Oceanic Island Basalts (OIB) for 30 years have shown the complex nature of mantle sources. However, measured variations in these samples can be related either to variable proportions of the components present in the deep source of the basa...