Julio Sepúlveda

Join us

Interested in joining the new Organic and Isotope Geochemistry Group as a student or postdoc? Contact Prof. Julio Sepúlveda directly for current opportunities.


Current Courses

  • GEOL 4700/5700-008: Organic Geochemistry


    This course explores the “biomarker concept” as a tool to elucidate biogeochemical and climatic processes in natural systems through four fundamental questions: How can we characterize and classify organic molecules in complex, natural mixtures? What processes control the synthesis, preservation and destruction of organic matter in nature? How can we use lipid biomarkers to study biogeochemical processes in modern and ancient systems? How can biomarkers inform us about Earth’s past climate and biota?
  • GEOL 5700-030: Geological Topics Seminar: Lipid Biomarkers in the Geosciences


    Recent analytical advances in organic and stable isotope geochemistry have revolutionized the Earth Sciences by providing an ever-growing number of tools to study the complex interplay between biology, biogeochemistry, geology and climate at different time scales. This course for graduate students explores hot topics in lipid biomarker and compound-specific stable isotope research. Compared to the regular Organic Geochemistry class (GEOL 4700-003/5700-0044), this course will be conducted in seminar format with interspersed small background lectures, and with a stronger focus on specific applications in the Earth Sciences. We will read and discuss seminal and recent research papers that are expanding our understanding of how our planet works, and how it has changed since the emergence of life.
  • GEOL 3040: Global Change: The recent geological record


    This course for undergraduate students explores the science of global change with a focus on how the geological record can inform the study of future climate change. We discuss the basics of the global climate system, how the climate of our planet has changed over geological time scales due to natural processes, and how it has changed and will continue to change due to human impact. Students will learn: (a) How the climate system works; (b) What factors cause climate to change across different time scales; (c) How scientists use different archives (records) and tools (proxy or proxies) to study climate change in the past (paleo-climate); (d) How scientists use observations, models, and theory to make predictions about future climate change and its consequences for our planet