Figure 12. Model pore-water results using Equation 1. Case A represents a geothermal gradient of 50°C/km, an initial sediment ¹⁸O value of +0.0 PDB, an initial water ¹⁸O value of 0.5 SMOW, and a recrystallization rate of 1% per 5 m. Case B represents the same conditions with the exception of a geothermal gradient of 70^oC/km. Case C represents the same conditions as Case A, except that the initial oxygen isotopic composition of the water is +0.5 .