Georadar Exploration of the Pilat Dune, France

The Pilat dune presents four principal paleosol (apparing at the surface) that have been dated by Carbon-14 analysis or Optical Stimulated Infrared Luminescence (OSIRL). Anyway, no quantitative information about the evolution of the paleosols within the dune is presented in literature. Here, we present our investigation of the internal structure of these paleosols by Ground Penetrating Radar (GPR) to explore the internal Pilat dune morphological properties. Three types of radar were used, with frequencies of 25 MHz, 100 MHz and 270 MHz, to get the best of both penetration and accuracy in paleosol visualisation.