地质哲学博士

加州理工学院授予博士学位的主要目的是承认学术广度，研究深度以及独立有效地调查问题的能力，而不是为了在规定的居住期限内完成明确的学习课程。该学位的工作必须包括研究和准备描述该学位的论文，以及主要在科学或工程领域具有先进性的系统研究。此外，考生必须在口语和书面英语上都有清晰的自我表达能力。该学位课程的学生工作将由他们选择主要学科的部门来具体指导。
The PhD degree is conferred by Caltech primarily in recognition of breadth of scholarship, depth of research, and the power to investigate problems independently and efficiently, rather than for the completion of a definite course of study through a stated period of residence. The work for the degree must consist of research and preparation of a thesis describing it, and of systematic studies of an advanced character, primarily in science or engineering. In addition, candidates must possess clear self-expression in both oral and written English.Students' work for the degree will be specifically directed by the division in which they have selected their major subject.