Field trips go to different parts of California in spring and in fall.
Students must bring a sleeping bag and tent, and pay a transportation and a commissary fee. Attendance at each lecture and one field trip is mandatory. Class will initially meet together, but after a few lectures, students will be assigned to a field trip of thirty students with one instructor per group. This course is restricted to freshmen only. It was formerly listed as Geology 39A. Harold C. Helgeson is a Professor of Geochemistry with the Department of Earth and Planetary Science.