KLEPEIS, Keith¹, INGRAM, Michael¹, MACLEOD, Douglas¹, WEBBER, Jeffrey¹, and STOWELL, Harold², (1) Geology, University of Vermont, Trinity Campus, Delehanty Hall, 180 Colchester Ave, Burlington, VT 05405, kklepeis@uvm.edu, (2) Department of Geological Sciences, University of Alabama, Box 870338, Tuscaloosa, AL 35487

BETKA, Paul, Jackson School of Geosciences, University of Texas at Austin, Austin, TX 78722, pmbetka@utexas.edu, MOSHER, Sharon, Department of Geological Sciences, Jackson School of Geosciences, The University of Texas at Austin, 1 University Station C1100, Austin, TX 78712-0254, and KLEPEIS, Keith, Geology, University of Vermont, Trinity Campus, Delehanty Hall, 180 Colchester Ave, Burlington, VT 05405

MOLINA GARZA, Roberto, Centro de Geociencias, UNAM, -Campus Juriquilla, Queretaro, Queretaro, 76230, Mexico, rmolina@geociencias.unam.mx, GEISSMAN, J.W., Department of Geosciences, ROC 21, University of Texas at Dallas, 800 West Campbell Road, Richardson, TX 75080, WAWRZYNIEC, Timothy F., Department of Natural and Environmental Sciences, Western State College of Colorado, 31C Hurst Hall, Gunnison, CO 81231, and IRIONDO, Alexander, Centro de Geociencias, Universidad Nacional Autonoma de Mexico, Boulevard Juriquilla 3001, Juriquilla, 76230, Mexico

PIGNOTTA, Geoffrey and NUSHART, Nathan, Department of Geology, University of Wisconsin - Eau Claire, 105 Garfield Ave, Eau Claire, WI 54702, pignotgs@uwec.edu

REGAN, Sean P., Department of Geosciences, University of Massachusetts, Amherst, 611 N Pleasant St, Amherst, MA 01003, sregan@geo.umass.edu, WILLIAMS, Michael L., Dept. of Geosciences, University of Massachusetts, Amherst, 611 North Pleasant Street, 233 Morrill Science Center, Amherst, MA 01003, MAHAN, Kevin H., Department of Geological Sciences, University of Colorado at Boulder, 2200 Colorado Ave, Boulder, CO 80309, HOLLAND, Mark Edward, Department of Geosciences, University of Massachusetts, 611 North Pleasant Street, Amherst, MA 01003, LESLIE, S., Geological Sciences, University of Colorado, Boulder, 2200 Colorado Ave, Boulder, CO 80309-0399, and JERCINOVIC, Michael J., Department of Geosciences, Univ of Massachusetts, Amherst, MA 01003

SOUTHWORTH, Scott¹, MERSCHAT, Arthur¹, TOLLO, Richard P.², ALEINIKOFF, John N.³, STOKES, Rebecca⁴, SATKOSKI, Aaron M.⁵, and RANKIN, Douglas W.¹, (1) U.S. Geological Survey, MS 926A National Center, Reston, VA 20192-0001, ssouthwo@usgs.gov, (2) Geological Sciences Program, George Washington Univ, Washington, DC 20052, (3) U.S. Geological Survey, MS 963, Denver, CO 80225, (4) Geosciences, Indiana University, 1001 E 10th Street, Bloomington, IN 47401, (5) Earth Sciences, Syracuse University, 204 Heroy Geology Laboratory, Syracuse, NY 13244-1070

FARRAR, Stewart S., Geography and Geology, Eastern Kentucky University, 103 Roark, Richmond, KY 40475, stewart.farrar@eku.edu

VALENTINO, David W., Department of Earth Sciences, State University of New York at Oswego, Oswego, NY 13126, david.valentino@oswego.edu and CHIARENZELLI, Jeffrey R., Department of Geology, St. Lawrence University, Canton, NY 13617

MASSEY, Matthew A., Department of Geology, Marshall University, Huntington, WV 25755, mamass1@uky.edu

BAIRD, Graham B., Earth Sciences, University of Northern Colorado, Campus Box 100, Greeley, CO 80639, Graham.Baird@unco.edu