Essays about: "Hf-isotopes"

Found 2 essays containing the word Hf-isotopes.

  1. 1. U-Pb, O and Lu-Hf isotope ratios of detrital zircon from Ghana, West-African Craton : formation of juvenile, Palaeoproterozoic crust

    University essay from Lunds universitet/Geologiska institutionen

    Author : Bára Dröfn Kristinsdóttir; [2013]
    Keywords : Hf-Model ages; West African Craton; detrital zircon; Ghana; crustal growth; Earth and Environmental Sciences;

    Abstract : Detrital zircon were sampled from five rivers in Ghana and they were analysed in situ for U-Th-Pb, O and Lu-Hf isotopes. Based on the analyses, their U-Pb crystallisation ages, δ18O isotope ratio, εHf and Hf-model ages were determined. This provides information about the origin and crustal evolution of the Palaeoproterozoic bedrock in Ghana. READ MORE

  3. 2. Zircon U-Pb, Hf and O isotope constraints on the growth versus recycling of continental crust in the Grenville orogen, Ohio, USA

    University essay from Lunds universitet/Geologiska institutionen

    Author : Andreas Petersson; [2010]
    Keywords : zircon; U-Pb; geochronology; Hf-isotopes; O-isotopes; Grenville; crustal growth; North-American craton; zirkon; Hf-isotoper; O-isotopeer; kontinenttillväxt; nordamerikanska kratonen; Earth and Environmental Sciences;

    Abstract : Detta arbetet har hanterat sex olika borrkärnor från den Prekambriska berggrunden i Ohio, USA. Denna berggrund är täckt med 800 – 5000 meter av Paleozoiska avlagringar och på grund av detta vet vi väldigt lite om den. READ MORE