John J. Clague
John Joseph Clague PhD FRSC OC (born 1946) is a Canadian authority in Quaternary and environmental earth sciences. He is a professor of earth sciences at Simon Fraser University and an emeritus scientist of the Geological Survey of Canada. Clague was the editor-in-chief of the Canadian Journal of Earth Sciences, president of the Canadian Geomorphology Research Group and vice president of International Union for Quaternary Research (INQUA). Clague is an expert in the science of the last 2 million years of earth geological history, and specializes in geological hazards, such as earthquakes, tsunamis, landslides, and floods. He has 35 years experience in surficial/terrain mapping, Quaternary stratigraphic investigations, engineering and environmental interpretations of surficial geological information, and natural hazard studies.