Geology

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http://hdl.handle.net/1903/2243

Recent Submissions

  • Geodynamic implications of ophiolitic chromitites in the La Cabaña ultramafic bodies, Central Chile 

    González-Jiménez, José María; Barra, Fernando; Walker, Richard J.; Reich, Martin; Gervilla, Fernando (Taylor & Francis Group - International Geology Review, 2014)
    Chromitites (>80% volume chromite) hosted in two ultramafic bodies (Lavanderos and Centinela Bajo) from the Palaeozoic metamorphic basement of the Chilean Coastal Cordillera were studied in terms of their chromite ...
  • 182W and HSE constraints from 2.7 Ga komatiites on the heterogeneous nature of the Archean mantle 

    Puchtel, Igor S; Blichert-Toft, Janne; Touboul, Mathieu; Walker, Richard J. (Elsevier - Geochimica et Cosmochimica Acta, 2018)
    While the isotopically heterogeneous nature of the terrestrial mantle has long been established, the origin, scale, and longevity of the heterogeneities for different elements and isotopic systems are still debated. Here, ...
  • Combined Lithophile-Siderophile Isotopic Constraints on Hadean Processes Preserved in Ocean Island Basalt Sources 

    Peters, Bradley; Mundl-Petermeier, Andrea; Carlson, Richard; Walker, Richard; Day, James (American Geophysical Union - Geochemistry, Geophysics, Geosystems, 2021)
    Detection of Hadean isotopic signatures within modern ocean island basalts (OIB) has greatly influenced understanding of Earth's earliest history and long-term dynamics. However, a relationship between two isotopic tools ...
  • Crystallization histories of the group IIF iron meteorites and Eagle Station pallasites 

    Hilton, Connor; Ash, Richard; Walker, Richard (Wiley - Meteoritics & Planetary Science, 2020)
    The group IIF iron meteorites and Eagle Station pallasites (PES) have highly siderophile element abundances (HSE; Re, Os, Ir, Ru, Pt, and Pd) of metal that are consistent with formation in planetesimal cores by fractional ...
  • In search of late-stage planetary building blocks 

    Walker, Richard; Bermingham, Katherine; Liu, Jingao; Puchtel, Igor; Touboul, Mathieu (Elsevier - Chemical Geology, 2015)
    Genetic contributions to the final stages of planetary growth, including materials associated with the giant Moon forming impact, late accretion, and late heavy bombardment are examined using siderophile elements. Isotopic ...

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