Figure F6. Hydraulic parameters for three characteristic lithofacies encountered in Ursa Basin. MTD = mass transport deposit. A. Porosity vs. effective stress based on experimental results of Long et al. (2008b). B. Permeability (k) vs. effective stress based on experimental results of Long et al. (2008b) and Schneider (2011). C. Uniaxial compressibility (mv) vs. effective stress based on Long et al. (2011), Long et al. (2008b), and Schneider (2011). D. Coefficient of consolidation (cv) vs. effective stress. cv is calculated from Equation 3. Equivalent hydrostatic depth (the depth for a pore pressure that is hydrostatic) is for a sediment bulk density of 2.0 g/cm3 and a water density of 1.023 g/cm3. A striking feature is that over the depth range of this model (1–100 m hydrostatic depth), the coefficient of consolidation for the mudstone lithofacies is constant and equal to 10–8 m2/s.
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