Masa-espektrometria bidezko prozedura analitiko berrien garapena Geokimika Isotopikoan eta haien aplikazioa presio altuko arroka metamorfikoen azterketan

The development of Isotope Geochemistry/Geochronology has triggered many technical improvements in the past decades and has revolutionised the potential information available on the tectonics of metamorphic belts. The University of the Basque Country UPV/EHU has acquired the specific analytical equipment, which has allowed the implementation and improvement of several of the worldwide most used geochronological methods. In the present work, techniques for Rb-Sr and Lu-Hf analysis by MC-ICP-MS, and Hf-Hf and U-Pb analysis by LA-ICP-MS have been developed. These techniques have been employed to date and trace the origin of high-pressure rocks from the Malpica-Tui and Cabo Ortegal Allochthonous Complexes of the NW Iberian Massif.