Geological and tectonic controls in Spanish submarine landslides

Simposio sobre el Margen Ibérico Atlántico (9º. 2018. Coimbra, Portugal)Morphometric parameters of the submarine landslides reveal a relationship between the geological and tectonic controls where they have developed. Three main groups with significant differences between minimum or maximum bathymetry versus sphericity are defined: deep mid-ocean spreading ridges, volcanic islands and continental margins. While minimum bathymetry versus sphericity in continental margins show no significant association, deep mid-ocean spreading ridges show a positive association, with larger values of sphericity along the increasing values of minimum bathymetry. On the contrary, landslides in volcanic islands display a negative association of these variables, with lower values of sphericity associated with higher values of minimum bathymetry.Instituto Geológico y Minero de España, Españ