Lithospheric structure of the Western Pyrenees- Cantabrian Mountains based on 3D modelling of gravity anomalies and geoid undulations: preliminary results

Resumen

The lithospheric structure of the contact zone between the Iberian and European plates inthe transition from the Western Pyrenees to the Cantabrian Mountains is investigated by 3D modellingof gravity anomalies and geoid undulations. The main target of this study is to gain insight intothe deep geometry of this plate boundary, especially into the topography of the lithosphere-asthenosphereboundary. The results, still preliminary, suggest that the lithospheric thickness is similar on theIberian and European sides, with a small and discontinuous lithospheric root in the contact zonebetween the two plates.