Students in Saint Louis University's Ph.D. geoscience programs apply physics and chemistry to study Earth processes from the surface to the core. These studies prepare our graduates for diverse careers in government, industry, consulting, and academia. The Doctor of Philosophy in Geosciences requires a minimum of 48 credits of course work and exactly 12 credits of dissertation research. Up to 24 credits of coursework leading to a master's degree may count toward the credit requirement. SLU's geoscience Ph.D. program prepares students for careers in academic research, teaching, government or industrial research environments.