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Publications in VIVO

Sepúlveda, Julio Assistant Professor


Research Areas research areas


research overview

  • Dr. Sepúlveda is a broadly trained geobiologist who uses organic and stable isotope geochemical tools to study the co-evolution of biology, biogeochemical cycles and climate. His research focuses on elucidating how microbial and biogeochemical processes respond to environmental perturbations in both contemporary (e.g., continental margins, marine oxygen minimum zones, soils, lakes, extreme environments) and ancient (glacial-interglacial transitions, greenhouse climates, extinction events) settings. More specifically, he achieves this by studying and validating the biogeochemical and isotopic information encoded in organic molecules (biomarkers) present in modern environments, and in their fossilized counterparts preserved in sedimentary records.


  • Organic and isotope biogeochemistry, lipid biomarkers as tracers for microbial processes and biogeochemical cycles, paleoenvironmental sciences, geobiology, CO2 forcing and climate change, co-evolution of climate and biology


selected publications


courses taught

  • GEOL 1060 - Global Change: An Earth Science Perspective
    Primary Instructor - Spring 2019
    Focuses on evidence for planetary warming, climate change, glacier and ice-sheet melting and sea level rise both now and in the recent past. Attempts to develop understanding of the interactions within the coupled Earth system that regulate such changes. Utilizes examples from the geological and instrumental records, and evaluates the global warming forecast. Degree credit not granted for this course and ATOC 1060.
  • GEOL 3040 - Global Change: The Recent Geological Record
    Primary Instructor - Fall 2018 / Fall 2019
    Geological records in lakes, oceans, deserts, and around glaciers indicate the significant changes in the global systems that have taken place over the last few hundred or thousand years. Explores the timing and nature of these changes. Department enforced prerequisites: any two-course sequence of natural science core courses.
  • GEOL 4700 - Special Geological Topics
    Primary Instructor - Spring 2019
    Studies in selected geological subjects of special current interest (for undergraduates). May be repeated up to 9 total credit hours within a term.
  • GEOL 5700 - Geological Topics Seminar
    Primary Instructor - Spring 2019
    Offers seminar studies in geological subjects of special current interest. Primarily for graduate students, as departmental staff and facilities permit. May be repeated up to 15 total credit hours provided that topics vary.


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