GEOL 204 -- Historical Geology (4) Historical Geology is the second course in the geology sequence and builds upon the basic geologic principles introduced in 100-level courses. The first half of the course focuses on the methods and principles that geologist use to interpret Earth History; second half of the course focuses on Earth systems history (climate, oceans, atmosphere, geologic processes and life). Prerequisite: GEOL 101 or 103 or 125. Lab required. Formerly GEOL 104. Gen Ed: SP & LB credit. Fall and Spring.