G3Dv3.1 0314, isohypses of top Fm van Tielt and Hyon

This layer gives the isohypses of the top of the formations of Tielt and Hyon, as defined in the Geological 3D model of the Flemish subsurface - version 3.1. The Geological 3D model was drawn up in the framework of the management agreement of the Flemish government with VITO, under the name VLAKO, on behalf of the Flemish Environmental Planning Bureau.