New Constraints on the Origin of the EM‐1 Component Revealed by the Measurement of the La‐Ce Isotope Systematics in Gough Island Lavas

• Published in: Geochemistry, Geophysics, Geosystems
• Main Authors: Boyet, M., Doucelance, R., Israel, C., Bonnand, P., Auclair, Delphine, Suchorski, K., Bosq, Chantal
• Other Authors: Laboratoire Magmas et Volcans (LMV), Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Institut de Recherche pour le Développement et la société-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Observatoire de Physique du Globe de Clermont-Ferrand (OPGC), Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS), ANR-10-LABX-0006,CLERVOLC,Clermont-Ferrand centre for research on volcanism(2010), ANR-16-IDEX-0001,CAP 20-25,CAP 20-25(2016)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2019
• Subjects: [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry; Gough; South Atlantic Ocean
• Online Access: https://uca.hal.science/hal-02156044; https://uca.hal.science/hal-02156044/document; https://uca.hal.science/hal-02156044/file/Boyet%20etal%20G3%202019.pdf; https://doi.org/10.1029/2019GC008228

International audience Hot spot lavas show a large diversity of isotope compositions resulting from the recycling ofsurface material into the convective mantle. Amongst the mantle end‐members, EM‐1 (enriched mantle)is widely debated and scenarios involving either old pelagic sediments subducted into...