An overview of the fundamental earth science processes responsible for the creation, transformation, and ongoing physical development of the Pacific Northwest. These processes are studied in the context of the building of the North American continent through tectonic forces and surface dynamics. Topics include: geologic time, tectonics, volcanology, seismology, stratigraphy, glaciation, erosion, paleontology, paleoclimatology, and environmental issues. Field trips and field studies are included.