Effective global mixing of the highly siderophile elements into Earth’s mantle inferred from oceanic abyssal peridotites

• Published in: Geochimica et Cosmochimica Acta
• Main Authors: Paquet, Marine, Day, James M.D., Brown, Diana, B, Waters, Christopher, L
• Other Authors: Scripps Institution of Oceanography (SIO - UC San Diego), University of California San Diego (UC San Diego), University of California (UC)-University of California (UC), Institut de Physique du Globe de Paris (IPG Paris)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2021
• Subjects: Oceanic mantle; Peridotite; Highly siderophile elements; Os isotopes; Late accretion; Mantle convection; Heterogeneity; Oceanic mantle peridotite highly siderophile elements Os isotopes late accretion mantle convection heterogeneity; [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry; Antarctic; Hess; Indian; Mid-Atlantic Ridge; Pacific; Antarc*
• Online Access: https://hal.science/hal-04092171; https://hal.science/hal-04092171/document; https://hal.science/hal-04092171/file/Paquet-et-al_GCA_2022.pdf; https://doi.org/10.1016/j.gca.2021.09.033

Late accretion occurred through addition of massive impactors to Earth, leading to potential heterogeneity in the distribution of highly siderophile elements (HSE: Os, Ir, Ru, Pt, Pd, Re) within the mantle. Abyssal peridotites sample the presentday convecting mantle, which make them useful for exami...