Fig. 8From: Predictability of properties of a fractured geothermal reservoir: the opportunities and limitations of an outcrop analogue studyHalf-circular diagrams showing the relation between fracture strike and apertures or thickness of fill, respectively. a Cleebourg, (a1–a4) fracture data from the Cleebourg outcrop with adjusted scale for improved readability and b Leistadt. Apertures from the eastern outcrops of Kammerforster and Riesenstein are not available. Rose diagrams scaled for mean aperture in 10° bins. The bold red lines show the direction of the regional maximum horizontal compressive stress (NW–SE to NNW–SSE; Heidbach et al. 2008)Back to article page