The University of Arizona

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  • Vol 42, No 9 (2007) - Articles
    Osmium, tungsten, and chromium isotopes in sediments and in Ni-rich spinel at the K-T boundary: Signature of a chondritic impactor
    Abstract  PDF
  • Vol 41, No 8 (2006) - Articles
    Chronostratigraphy, composition, and origin of Ni-rich spinel from the Late Eocene Fuente Caldera section in Spain: One impact or more?
    Abstract  PDF