NAGRA Opalinus Clay (…002 - Version 1
FEP 16.1.5 Evolution of regional stress regime

In northern Switzerland, the maximal horizontal stress is oriented NW-SE in the western part and N-S in the eastern part. Generally, a compressive stress field is observed in the Zürcher Weinland, with the maximal horizontal stress being approximately 30 % larger than both the minimal horizontal stress and the vertical stress. During the next one million years, no significant changes in the regional stress field are expected.