J. Gregory Shellnutt is Chair Professor in the Department of Earth Sciences, National Taiwan Normal University. His research focuses on the geochemistry and geochronology of magmatic rocks from large igneous provinces, Precambrian mafic dyke swarms, the Central African Orogenic Belt, and the Appalachian Orogeny. He received the Young Scientist Medal from the Mineralogical Association of Canada and Academia Sinica (Taiwan), the National Science and Technology Council (Taiwan) Outstanding Research Award in 2015 and 2022, and the Ma Ting Ying and Wang Hanzhuo awards from the Geological Society of Taiwan. Greg is currently the Co-Editor-in Chief of Lithos, Co-Editor-in-Chief of Canadian Journal of Mineralogy and Petrology, Associate Editor of Journal of the Geological Society of India, and Associated Editor of Frontiers in Earth Sciences. Steven W. Denyszyn is an Assistant Professor with the Department of Earth Sciences at Memorial University of Newfoundland, Canada. Previous affiliations include the University of Toronto, the Berkeley Geochronology Center, and the University of Western Australia.

He primarily uses high-precision U-Pb geochronology to study the timing and rates of igneous processes, particularly large igneous provinces and magmatic ore deposits, as well as mass extinctions, paleocontinental reconstructions, and tectonics.