KLEPEIS, Keith A.¹, INGRAM, Michael¹, MACLEOD, Douglas¹, WEBBER, Jeffrey¹ and STOWELL, Harold H.², (1)Geology, University of Vermont, Trinity Campus, Delehanty Hall, 180 Colchester Ave, Burlington, VT 05405, (2)Department of Geological Sciences, University of Alabama, Tuscaloosa, AL 35487, Keith.Klepeis@uvm.edu, Keith.Klepeis@uvm.edu

BETKA, Paul, Jackson School of Geosciences, University of Texas at Austin, Austin, TX 78722, 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 A., Geology, University of Vermont, Trinity Campus, Delehanty Hall, 180 Colchester Ave, Burlington, VT 05405, pmbetka@utexas.edu, pmbetka@utexas.edu

MOLINA GARZA, Roberto, Centro de Geociencias, UNAM, -Campus Juriquilla, Queretaro, Queretaro, 76230, Mexico, 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 Colorado University, 31C Hurst Hall, Gunnison, CO 81231 and IRIONDO, Alexander, Centro de Geociencias, Universidad Nacional Autonoma de Mexico, Boulevard Juriquilla 3001, Juriquilla, 76230, Mexico, rmolina@geociencias.unam.mx, rmolina@geociencias.unam.mx

PIGNOTTA, Geoffrey, Department of Geology, University of Wisconsin - Eau Claire, 105 Garfield Ave, Eau Claire, WI 54702 and NUSHART, Nathan, Department of Geology, University of South Florida, 4202 East Fowler Ave, SCA 528, Tampa, FL 33620, pignotgs@uwec.edu, pignotgs@uwec.edu

REGAN, Sean P., Department of Geosciences, University of Massachusetts, Amherst, 611 N Pleasant St, Amherst, MA 01003, WILLIAMS, Michael L., Department of Geosciences, University of Massachusetts, Amherst, 611 North Pleasant Street, 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 Earth and Planetary Sciences, University of New Mexico, 221 Yale Blvd NE, Albuquerque, NM 87131, 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, sregan@geo.umass.edu, sregan@geo.umass.edu

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, (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, ssouthwo@usgs.gov, ssouthwo@usgs.gov

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

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

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

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