معرفی
Crayton J. Yapp is a Professor in the Department of Geological Sciences at Southern Methodist University. His research focuses on the critical zone interactions between the solid Earth, atmosphere, and biosphere, with an emphasis on stable isotope geochemistry and paleoclimatic proxies. He holds a Ph.D. in Geochemistry from the California Institute of Technology (Caltech), specializing in low-temperature geochemical systems.
Dr. Yapp's work examines goethite and hematite minerals as recorders of ancient environmental conditions, including CO2 levels, temperature, and biological activity. He investigates modern and ancient climate systems through isotopic analysis of land snail shells, urban CO2 dynamics, and pedogenic minerals. His teaching portfolio includes courses on Earth systems, isotope geochemistry, and thermodynamics of geological processes.
Research highlights include reconstructing Early Eocene CO2 concentrations (16x modern levels), analyzing Permian-Triassic soil CO2 dynamics, and developing models for urban and indoor CO2 fluxes. His studies bridge geochemical processes across timescales, from seconds to millions of years, with applications to climate modeling and environmental science.
- Education: Ph.D., Caltech (Stable Isotope Geochemistry)
- Courses Taught: GEOL 1301, GEOL 3353, GEOL 6338, GEOL 6371
- Key Research Themes: Critical zone dynamics, paleoclimate proxies, biogeochemical cycles, goethite carbonate components
Publications span over 15 years, with emphasis on isotopic analysis of pedogenic minerals, land snail shell applications, and CO2 mixing processes in urban environments. Collaborations include studies in North America, the Arctic, and the Canary Islands.
