G3Dv3.1 0304, Bilzen top Fm isohypses

This layer gives the isohypes of the Bilzen Formation Summit, as defined in the Geological 3D model of the Flemish Subsoil – version 3.1. The Geological 3D model was drawn up under the Flemish Government’s management agreement with VITO, known as VLAKO, on behalf of the Flemish Planning Bureau for Environment本图层呈现了佛兰德斯地下土层地质三维模型（版本3.1）中定义的比尔岑组顶面等海拔等值线（isohypes）。该地质三维模型系依据佛兰芒政府与弗拉芒技术研究院（VITO）签订的VLAKO管理协议，受佛兰德斯环境规划局委托编制完成。