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Donald Davis is a Professor Emeritus in the Department of Earth Sciences at the University of Toronto. His research primarily focuses on geochronology, petrology, mineralogy, and Earth materials. Over the last 50 years, he has contributed significantly to the measurement of the true age of Earth and the processes shaping it. Working in the Jack Satterly Geochronology Laboratory, Davis specializes in precise measurements of geologic time using uranium-lead isotopic systems in minerals like zircon. His lab has been recognized for maintaining the world’s lowest contamination levels, enabling the analysis of minute samples. His work includes studying Earth's history, plate tectonics, the evolution of planets, and mass extinctions evidenced by the geologic record. Significant research outputs include dating ancient rocks and minerals, investigating the growth of continents, and exploring the dynamics of early solar systems. Davis’s research has implications for understanding Earth's developmental timeline, including impacts of geological events and climatic changes on biological evolution and mass extinctions.
Department of Sociology