Fig. 4From: Mechanical zonation of rock properties and the development of fluid migration pathways: implications for enhanced geothermal systems in sedimentary-hosted geothermal reservoirsa X-ray diffraction (XRD) analysis of the core sample; b digital photography of core sample; c core-scale characterization; d scratch test unconfined compressive strength (UCS); e dynamic Poisson’s ratio (ν); f scratch toughness (Ks)Back to article page