Abstract
This study aims to realize a regional scale 3D geological model (3D-GM) of the Pays d’Auge Plateau (PAP), in Normandy, France, leading to the study of the Vaches Noires Cliffs (VNCs), a local coastal site. A 3D-GM is built using a 3D implicit method based on the integration of surface geology, cross sections, and elevation data. The geometry of the geological layers is characterized, leading to an estimation of the volume of each geological unit and of the water resource within the Cretaceous aquifer of the study site. A hydrogeological model of the VNCs is proposed and the role of clayey soils on the erosive process of the cliffs is considered. Lastly, potential applications of 3D-GM are discussed in the framework of further researches on coastal retreat in Normandy.
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