A student from another division at Caltech may, with the approval of the GPS division, elect a minor in any one of the major subjects areas: geology, geobiology, geochemistry, geophysics, planetary science, or environmental science and engineering.
Such a subject minor will include at least 45 units in courses at the 100 level or higher. Normally, a member of the division faculty affiliated with the minor will participate in the student's oral thesis defense.
