Anthony R. Philpotts is Emeritus Professor of Geology and Geophysics at the University of Connecticut, a visiting fellow at Yale University, and an adjunct professor at the University of Massachusetts. He has over forty years of teaching experience. He has worked on Precambrian massif-type anorthosites, pseudotachylites, alkaline rocks, and liquid immiscibility in FeTi oxide systems and in tholeiitic magmas. He has been awarded the Peacock Memorial Prize of the Walker Mineralogical Club of Toronto and the Hawley Award of the Mineralogical Association of Canada. He has served as an editor for the Canadian Mineralogist and the Journal of the Canadian Institute of Mining and Metallurgy.
Jay J. Ague is the Henry Barnard Davis Memorial Professor of Earth and Planetary Sciences at Yale University, and the Curator-in-Charge of Mineralogy and Meteoritics at the Yale Peabody Museum of Natural History. He studies fluid flow, chemical reactions, mass transfer, and heat transfer in Earth's lithosphere, focusing on the metamorphic and igneous rocks comprising the deep roots of mountain belts. He has given the Daly Lecture for the American Geophysical Union and is a fellow of the Geological Society of America, the Geological Society of London, and the Mineralogical Society of America. He was the lead editor of the American Journal of Science (1998 to 2008), and has served on the editorial boards of Chemical Geology, Geology, and the Journal of Metamorphic Geology.