Tracy K P GreggTracy K. P. Gregg is an Associate Professor of Geology and a member of the Volcanology Research Group at the State University of New York, Buffalo. She has studied volcanoes around the world, including in Iceland, Hawaii, and at the bottom of the ocen - the latter using the HOV Alvin. Her area of expertise is the study of lava flow emplacement around the Solar System, particularly on Mars, but she enjoys studying lava flows of any composition, in any tectonic setting, on any planet. She is the co-editor of two other volcanology books that focus on volcanic behaviors in the range of environments found in our Solar System. Read More Read Less