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Geological maps 1:500,000

The Last Glacial Maximum (LGM)

The map of “Switzerland during the Last Glacial Maximum (LGM), 1:500,000” shows the maximum extent of glaciation in Switzerland at the height of the last Ice Age about 24,000 years ago. It presents the latest results of research on the Ice Age in the form of a clear, high-quality map.

Switzerland during the Last Glacial Maximum (LGM) 1:500,000

Hydrogeological Maps of Switzerland

The Hydrogeological Map of Switzerland 1:500,000 comprises two sheets. The first sheet shows the various groundwater resources in Switzerland and provides productivity information. The second indicates the vulnerability of groundwater resources to possible contamination.

Hydrogeological Map of Switzerland 1:500,000

Geological Map of Switzerland 1:500,000

It provides an overview of the distribution of the uppermost rock strata occurring in Switzerland. Additionally, age and simplified tectonic assignment of the different types of rocks are given. It is an essential aid for education in the fields of environmental and earth sciences as well as natural hazards.

Geological Map of Switzerland 1:500,000

Tectonic Map of Switzerland 1:500,000

The Tectonic Map of Switzerland 1:500,000 displays the large-scale structural and tectonic units, which contribute to a better understanding of the geological buildup of the Alps.

Tectonic Map of Switzerland 1:500,000

Gravimetric Map of Switzerland 1:500,000 Bouguer Anomalies

The Bouguer gravity anomaly is defined as the difference between the gravity measured at a specific point on the Earth’s surface and a gravity value calculated at the same point assuming that the Earth’s crust is homogeneous. The map shows on the one hand the regional negative anomalies associated with the Alps and on the other hand the positive anomaly of the Sesia–Finero zone, which signifies an excess of mass at depth.