Contrasting origins of the upper mantle revealed by hafnium and lead isotopes from the Southeast Indian Ridge

• Published in: Nature
• Main Authors: B. Hanan, Barry, Blichert-Toft, Janne, G. Pyle, Douglas, M. Christie, David
• Other Authors: Laboratoire de Sciences de la Terre (LST), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2004
• Subjects: [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry; Antarctic; Australian-Antarctic Discordance; Indian; Pacific; Southeast Indian Ridge; Antarc*
• Online Access: https://hal.science/hal-00102158; https://doi.org/10.1038/nature03026

The origin of the isotopic signature of Indian mid-ocean ridge basalts has remained enigmatic, because the geochemical composition of these basalts is consistent either with pollution from recycled, ancient altered oceanic crust and sediments, or with ancient continental crust or lithosphere. The ra...