Fig. 1

Geological overview maps: a Paleogeographic origin of the main tectonic units of the Alps. Orange square marks the location of Fig. 1b. Red and yellow lines indicate normal faults on top and base of eclogite-bearing units, respectively (1: Schneeberg Normal Fault; 2: normal fault in the Radenthein area; 3: Plankogel detachment; 4: basal shear zone in northern part of Saualpe and Koralpe ridge; 5: Wallner Shear Zone; 6: basal shear zone in Schober Mountains). b Tectonic subdivision of the Kreuzeck Mountains and its surrounding. Square indicates location of Fig. 2. F fault, SZ shear zone, R-T Ragga-Teuchl). The signs for fault and nappe boundary in the legend of Fig. 1a are also valid for Fig. 1b