Jackson Purchase Historical Society will meet on Saturday, November 5, 2011, at 10:30 a.m. in the Weldon Public Library in downtown Martin, Tennessee. University of Tennessee at Martin Geology Professor Stan Dunagan will be speaking about “The New Madrid Seismic Zone: Then (1811-1812) and Now.” Dr. Dunigan grew up in Martin and attended public schools and the University of Tennessee at Martin. For many years his father Nick Dunagan held several administrative posts at University of Tennessee at Martin before becoming campus Chancellor. Dr. Dunagan graduated from the University of Tennessee at Martin in 1993 and later earned his Ph.D.…