University of Colorado Boulder

What you'll study

The PhD emphasises original research leading to a dissertation, supported by targeted coursework and practical training. Students typically take advanced classes in topics such as structural geology and tectonics, igneous and metamorphic petrology, sedimentology and stratigraphy, geochemistry and isotope systems, seismology and geophysics, hydrogeology, remote sensing and geographic information systems (GIS), and numerical methods for Earth sciences.

Core training often includes:

• Advanced coursework: a mix of graduate seminars and lecture courses tailored to the student’s research specialism.
• Qualifying examinations: written and/or oral exams that assess mastery of key concepts and readiness to pursue independent research.
• Research rotations or practicum: early-stage projects or collaborative work with faculty to refine research questions and methods.
• Field training: extensive fieldwork opportunities in the Rocky Mountains, Colorado Plateau and other regional sites, along with summer field courses and mapping projects.
• Laboratory and computational skills: hands-on training in geochemical analyses, petrography, mass spectrometry, high-resolution imaging, geochronology and high-performance computing for modelling.
• Teaching and communication: experience as a teaching assistant and training in scientific communication, grant writing and public outreach.

Students work closely with a faculty advisor and research group to design a programme of study that supports the dissertation. Interdisciplinary collaboration is common, with joint projects across institutes such as INSTAAR, and partnerships with federal laboratories and space-science programmes.

Entry requirements

Applicants are expected to hold a relevant bachelor’s degree (often with a strong honours component) or a master’s degree in geology, Earth sciences, geophysics, environmental science or a closely related field. Typical requirements include:

• Academic preparation: solid foundation in geology/earth science fundamentals, mathematics (calculus, linear algebra), and physics; prior coursework in field methods, geochemistry or geophysics is advantageous.
• Research experience: evidence of independent research or significant project work (undergraduate honours thesis, master’s thesis, lab experience or professional research).
• Supporting documents: academic transcripts, a statement of purpose outlining research interests, curriculum vitae, and letters of recommendation from academic or professional referees familiar with the applicant’s research potential.
• English language proficiency: for international applicants, acceptable TOEFL or IELTS scores as specified by the university if English-language qualifications are required.
• Standardised tests: GRE requirements vary; applicants should check the graduate admissions guidance for the most current policy.

Admission is competitive and research fit with potential faculty advisors is a key consideration. Many successful applicants arrive with demonstrated technical skills such as field mapping, laboratory techniques, programming or data analysis.

Career prospects

Graduates of the programme move into a wide range of careers where deep Earth-science expertise is required. Common paths include:

• Academic research and teaching: postdoctoral positions and faculty roles at universities and research institutions.
• Government science: research and applied roles in agencies such as geological surveys, environmental protection bodies and national laboratories.
• Energy and resources sector: exploration and research positions in oil and gas, geothermal energy, mining and mineral exploration, and subsurface storage projects.
• Environmental and engineering consulting: applied work on groundwater, geohazards, remediation, and land-use planning.
• Space and planetary science: research roles with space agencies and laboratories studying planetary geology and remote-sensing datasets.
• Science policy and non-profit sector: advisory, policy development and advocacy roles related to climate, natural hazards and resource management.

PhD graduates are valued for their technical skills in data analysis, modelling, field methods and instrumentation, as well as for project leadership and grant-writing abilities.

Why study at University of Colorado Boulder

CU Boulder offers a strong Earth-science environment with immediate access to the Rocky Mountains for fieldwork and natural laboratories for research in tectonics, volcanology, glaciology and sedimentary systems. The department maintains close interdisciplinary links with institutes and centres that broaden research opportunities, including institutes focused on atmospheric and environmental research and collaborations with federal agencies and space-science organisations.

Students benefit from a range of laboratory facilities and instrumentation, high-performance computing resources, and an active seminar series that connects graduate students with visiting scholars and industry partners. The programme’s emphasis on both rigorous field training and quantitative laboratory/computational methods prepares graduates for diverse scientific careers.

Funding support is commonly available through research and teaching assistantships, fellowships and project grants, enabling PhD candidates to focus on research while gaining professional training in teaching and science communication.