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Mihai Ducea is a professor of geology at the University of Arizona and also holds a courtesy appointment at the University of Bucharest. He received a Ph.D. at the California Institute of Technology. Ducea’s research is aimed at understanding the links between igneous and metamorphic petrologic processes and the tectonic evolution of continents. He is interested in continental margin processes and conducts fieldwork at various locations in the western North American Cordillera, the central Andes, the Carpathians, and southern Tibet. He runs a geochemical and radiogenic isotope laboratory at the University of Arizona. Ducea is a GSA Fellow who has published 31 papers in GSA journals (Geology, GSA Today, GSA Bulletin, Geosphere, and Lithosphere) over the past 16 years and has co-edited a GSA Memoir (2015) and a GSA Special Paper (2005).

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Peter Copeland is a professor in the Dept. of Earth and Atmospheric Sciences at the University of Houston. His research has focused primarily on thermochronology and its application to continental tectonics. He is the author of Communicating Rocks: Writing, Speaking, and Thinking about Geology (2012, Pearson). From 2001–2004, he was the co-editor of the Geological Society of America Bulletin.