VERTICAL TECTONICS AND PLATE INTERIORS: EVIDENCE FROM THE US CONTINENTAL INTERIOR
VAN DER PLUIJM, Ben, Earth & Environmental Sciences, Univ of Michigan, 1100 N University Ave, Ann Arbor, MI 48109 and MARSHAK, Stephen, Department of Geology, University of Illinois at Urbana-Champaign, 3081 Natural History Building, 1301 W. Green St., Urbana, IL 61801