Earth’s Largest Terrestrial Landslide (The Markagunt Gravity Slide of Southwest Utah): Insights from the Catastrophic Collapse of a Volcanic Field

David B. Hacker, Kent State University, Department of Geology, Kent, OH, United States, Robert F. Biek, Utah Geological Survey, Salt Lake City, United States and Peter D Rowley, Geologic Mapping Inc., New Harmony, UT, United States