G3Dv3.1 09, isohypses from top Devonian

This layer gives the isohypses of the top of the Devonian, 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.本图层展示了佛兰德斯地下地质三维模型（Geological 3D model，版本3.1）中所定义的泥盆系顶面等高线。该地质三维模型系受佛兰德斯环境规划局委托，依据佛兰德斯政府与VITO签订的管理协议，以VLAKO为项目名称编制完成。