as a geochemistry major, you will learn to apply the principles of chemistry and geology to the study of the earth. the geochemistry major focuses on chemical principles, reactions, geologic problems, environmental contamination, pollution, site assessment, remediation, water quality, pollution monitoring, climate change, soils, resource exploration and the health effects of minerals. geochemistry graduates will have the skills to address issues ranging from water resources to issues of pollution and remediation. with a degree in geochemistry, students can choose to do graduate study in either chemistry or in geology.