Dr. Ketcham also works on the theory and practice of apatite fission-track (AFT) thermochronology, and deriving the thermal history of rocks (i.e. what temperatures they experienced at certain times in the past) from AFT, (U-Th)/He, and vitrinite data. He oversees the fission-track thermochronology laboratory. Ongoing projects range from gathering basic data to better understand fission-track behavior and improve how we make measurements and create interpretations, to applications in a range of geological environments, from metamorphic core complexes to the Grand Canyon.
Dr. Ketcham also conducts research on the nucleation and growth of porphyroblasts (large crystals that grow during metamorphism), combining computational models and geochemical observations test how well we really understand this fundamental geological process.
International Information: Countries of Academic Interest
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