Hadean protocrust reworking at the origin of the Archean Napier Complex (Antarctica)

• Published in: Geochemical Perspectives Letters
• Main Authors: Guitreau, Martin, Boyet, M., Paquette, Jean-Louis, Gannoun, Abdelmouhcine, Konc, Z., Benbakkar, M., Suchorski, K., Hénot, J.-M.
• 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; Canada; East Antarctica; Gage; Gage Ridge; Greenland; Mount Sones; Napier; Antarc*; Antarctica
• Online Access: https://hal.uca.fr/hal-02399658; https://hal.uca.fr/hal-02399658/document; https://hal.uca.fr/hal-02399658/file/Guitreau%20M%20GPL%202019.pdf; https://doi.org/10.7185/geochemlet.1927

International audience The origin of the first continents is still poorly constrained due to the great scarcity of >3.7 Ga rocks. The Napier Complex (East Antarctica) hosts such rocks but the extreme metamorphic conditions it experienced have compromised most isotopic systematics. Here we have st...