Revision History for USGS Scientific Investigations Report 2012-5176-B Manuel Nathenson, Michael A. Clynne, and L.J. Patrick Muffler Eruption Probabilities for the Lassen Volcanic Center and Regional Volcanism, Northern California, and Probabilities for Large Explosive Eruptions in the Cascade Range ----------------------------------------------------- Posted online at http://pubs.usgs.gov/sir/2012/5176/b/ September 25, 2012 -----------------------------------------------------