Thanks to all who sent me the paper. Interesting stuff!
-------Mark Loewen Ph.D.Associate Professor LecturerDepartment of Geology and GeophysicsUniversity of UtahResident Research AssociateNatural History Museum of Utah301 Wakara WaySalt Lake City, Utah 84108-1214Cell: 801-891-6036Email: mloewen@nhmu.utah.edu