Influence of high marine Ca/SO4 ratio on alteration of submarine basalts at 2.41 Ga documented by triple O and Sr isotopes of epidote

• Published in: Precambrian Research
• Main Authors: Zakharov, D.O., Lundstrom, C.C., Laurent, Oscar, Reed, M.H., Bindeman, I.N.
• Other Authors: Université de Lausanne = University of Lausanne (UNIL), University of Oregon Eugene, University of Illinois at Urbana-Champaign Urbana, University of Illinois System, Géosciences Environnement Toulouse (GET), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2021
• Subjects: triple oxygen isotopes; marine sulfate; altered oceanic crust; epidote; mineral aqueous equilibrium modeling; [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry; [SDU.STU.PE]Sciences of the Universe [physics]/Earth Sciences/Petrography; [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology; Pacific; Reykjanes; Iceland; karelia*
• Online Access: https://hal.science/hal-03436606; https://hal.science/hal-03436606/document; https://hal.science/hal-03436606/file/MS_Zakharov_SrSr_17O_R2.pdf; https://doi.org/10.1016/j.precamres.2021.106164

International audience Over the course of Earth’s history, marine sulfate concentrations have been increasing in response to long-term atmospheric oxygenation. In contrast to modern oceans, where abundant sulfate precipitates in hot oceanic crust as anhydrite, Precambrian oceans contained much less...