2D Geology
The Swiss Geological Survey’s geological maps currently form the nationwide dataset relating to the structure of the underground in Switzerland. The Swiss Geological Survey thus makes an important contribution to the exploration and sustainable use of underground space.
Geological mapping of the earth’s surface (e.g. information from outcrops, quarries, etc.) forms the main basis for the production of geological maps. Geological units are interpreted according to their composition, age and location and are depicted on a topographic map together with various graphic elements. In addition to field mapping, data from aerial photographs, digital elevation models, boreholes and geophysical measurements contribute to the creation of a high-quality geological map.
The Swiss Geological Survey produces geological maps at a scale of 1:25'000 (Geological Atlas of Switzerland 1:25'000) as a basis, for example, for natural hazard prevention, groundwater protection or construction projects. The geological overview map of Switzerland at a scale of 1:500'000 (GeoMaps 500) is a general representation of the rock types and formations in the Swiss subsurface. Various different special geological and tectonic maps at scales from 1:25'000 to 1:100'000 supplement the information given in the Geological Atlas of Switzerland 1:25'000 and the GeoMaps 500.
The Swiss Geological Survey provides 2D geological models (GeoCover) of the whole of Switzerland at a scale of 1:25'000. The vector datasets are based on the Geological Atlas of Switzerland and other base maps. Harmonised legends (implementation in progress) and a geological data model of Switzerland allow specific queries on individual rock types or rock units. 3D models of the underground can also be derived from these maps.