HOGAN, John P., Geological Sciences and Engineering, Univ of Missouri - Rolla, 125 McNutt Hall, 1870 Miner Circle, Rolla, MO 65409-0410, LUX, Daniel R., Earth Sciences, Univ of Maine, 5790 Bryand Global Sciences Center, University of Maine, Orono, ME 04469, GIBSON, David, Department of Natural Sciences, University of Maine at Farmington, Preble Hall, 173 High Street, Farmington, ME 04938, HOOKS, Benjamin, Department of Geological Sciences, Univ of Maine, 5790 Bryand Global Sciences Center, Orono, ME 04469-5790 and O'DONNELL, Sean P., Geological Sciences and Engineering, University of Missouri-Rolla, 127 McNutt Hall, Rolla, MO 65409, jhogan@umr.edu, jhogan@umr.edu