Figure 5From: The significance of hydrothermal alteration zones for the mechanical behavior of a geothermal reservoirE -moduli and uniaxial compressive strength (UCS) of samples with different vein alteration grades. Data is taken from Valley and Evans ([2003]) who measured UCS and E-modulus for samples with different alteration grades. Alteration intensity is inversely correlated with E-modulus and UCS.Back to article page