This course covers thermodynamics and kinetics as applied to earth systems, over a range of conditions relevant to the Earth’s interior and its surface, with emphasis on the hydrosphere and lithosphere. The course examines speciation and phase stability in aqueous solutions, and pressure-temperature-composition relationships as applied to diagenesis, hydrothermal systems, metamorphism, and magmatism. Students will learn to use the software package Geochemist’s Workbench (GWB) to assist in constructing and understanding phase diagrams and reaction modeling.