1. 1 Norwegian Geotechnical Institute - NGI , Sandakerveien 140 , Oslo , Norway
2. 2 Institute of Rock Mechanics and Tunnelling , Graz University of Technology , Rechbauerstraße 12 , Graz , Austria
3. 3 GeoSphere Austria, Department of Geological Mapping , Neulinggasse 38 , Vienna , Austria
4. 4 Geologie und Grundwasser GmbH , Auer Welsbach Gasse 24 , Graz , Austria
5. 5 Institute of Mineralogy and Petrography , University of Innsbruck , Innrain 52 , Innsbruck , Austria