G3Dv3.1 0108, occurrence of Fm van Wden

This layer gives the limits of prevention of the Formatie van Wende, 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该图层划定了文德地层（Formatie van Wende）的防控边界，其定义收录于《法兰德斯地下三维地质模型——版本3.1》。本三维地质模型系受法兰德斯环境规划局委托，依照弗拉芒政府与VITO签订的VLAKO管理协议编制完成。