Knowledge about rocks, their origin, and their distribution contributes to the solution of many geological problems. Petrology focuses on the systematic study of igneous and metamorphic rocks including techniques of hand-specimen identification and classification. Basic principles of phase equilibria and geochemistry are used to understand the origin and behavior of magmas, the crystallization of magma, the origin of rock textures, and metamorphism. The dynamic nature of metamorphism in response to changes in the geological environment, as well as the relationships among tectonic processes, magma generation and metamorphism are examined. Lecture and laboratory. Field trip in either GEOL 290 or GEOL 310. Writing option. Spring (Alternate years; Offered 2019-20)