The elusive Hadean enriched reservoir revealed by 142Nd deficits in Isua Archaean rocks

Hanika Rizo (), Maud Boyet, Janne Blichert-Toft, Jonathan O’Neil, Minik T. Rosing and Jean-Louis Paquette
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Hanika Rizo: Clermont Université, Université Blaise Pascal, Laboratoire Magmas et Volcans, CNRS UMR 6524, IRD R 163, BP 10448, 63000 Clermont-Ferrand, France
Maud Boyet: Clermont Université, Université Blaise Pascal, Laboratoire Magmas et Volcans, CNRS UMR 6524, IRD R 163, BP 10448, 63000 Clermont-Ferrand, France
Janne Blichert-Toft: Laboratoire de Géologie de Lyon, Ecole Normale Supérieure de Lyon and Université Claude Bernard Lyon 1, CNRS UMR 5276, 69007 Lyon, France
Jonathan O’Neil: Clermont Université, Université Blaise Pascal, Laboratoire Magmas et Volcans, CNRS UMR 6524, IRD R 163, BP 10448, 63000 Clermont-Ferrand, France
Minik T. Rosing: Natural History Museum of Denmark and Nordic Center for Earth Evolution, University of Copenhagen, DK-1350 København, Denmark
Jean-Louis Paquette: Clermont Université, Université Blaise Pascal, Laboratoire Magmas et Volcans, CNRS UMR 6524, IRD R 163, BP 10448, 63000 Clermont-Ferrand, France

Nature, 2012, vol. 491, issue 7422, 96-100

Abstract: Excesses of 142Nd previously found in 3.7-billion-year-old rocks from Isua, southwest Greenland, imply their derivation from a depleted mantle formed in the Hadean eon; the signature of a complementary Hadean enriched reservoir is now reported in 3.4-billion-year-old mafic dykes found in Isua.

Date: 2012
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DOI: 10.1038/nature11565

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