2009 Portland GSA Annual Meeting (18-21 October 2009)

WILSON, Frederic H.¹, NORVELL, Nancy¹ and CHAPPELL, James R.², (1)Alaska Science Center, U.S. Geological Survey, 4210 University Dr, Anchorage, AK 99508, (2)Geosciences/GeologicResources Division, Colorado State Univ/National Park Service, 1201 Oak Ridge Drive, Suite 200, Fort Collins, CA 80525, fwilson@usgs.gov, fwilson@usgs.gov

SOUTHWORTH, Scott¹, TOLLO, Richard P.², ALEINIKOFF, John N.³, BAILEY, Christopher⁴, BURTON, William C.⁵, CRIDER, Ernest⁵, HACKLEY, Paul C.⁵, KUNK, Michael J.⁵, MUNDIL, Roland⁶, NAESER, Charles N.⁵, NAESER, Nancy⁵ and SMOOT, Joseph⁵, (1)U.S. Geological Survey, MS 926A National Center, Reston, VA 20192-0001, (2)Geological Sciences Program, George Washington University, Washington, DC 20052, (3)U.S. Geol. Survey, Denver, CO 80225, (4)Department of Geology, College of William & Mary, P.O. Box 8795, Williamsburg, VA 23187-8795, (5)U.S. Geological Survey, 926A National Center, Reston, VA 20192-0001, (6)Berkeley Geochronology Ctr, 2455 Ridge Rd, Berkeley, CA 94709-1211, ssouthwo@usgs.gov, ssouthwo@usgs.gov

CONDIT, Christopher D., Department of Geosciences, University of Massachusetts Amherst, Amherst, MA 01003, NATHAN, Stephan A., Dept. of Geosciences, Univ. Massachusetts, Amherst, MA 01003 and MABEE, Stephen B., Massachusetts Geological Survey, Univ. Massachusetts, 611 North Pleasant Street, Amherst, MA 01003, ccondit@geo.umass.edu, ccondit@geo.umass.edu

BLODGETT, Robert B., Geological Consultant, 2821 Kingfisher Drive, Anchorage, AK 99502 and ROHR, David M., Biology, Geology and Physical Sciences, Sul Ross State University, Alpine, TX 79832, RobertBBlodgett@yahoo.com, RobertBBlodgett@yahoo.com

KENWORTHY, Jason P. and LILLIE, Robert J., Department of Geosciences, Oregon State University, 104 Wilkinson Hall, Corvallis, OR 97331, Jason_Kenworthy@nps.gov, Jason_Kenworthy@nps.gov

TWEET, Justin S., Geologic Resources Division, National Park Service (through GeoCorps of America), 9149 79th Street South, Cottage Grove, MN 55016-2214, KENWORTHY, Jason P., Geologic Resources Division, National Park Service, 12795 West Alameda Parkway, PO Box 25287, Denver, CO 80225 and SANTUCCI, Vincent L., Chief Ranger, George Washington Memorial Parkway, McLean, VA 22101, jtweet.nps.paleo@gmail.com, jtweet.nps.paleo@gmail.com

SANTUCCI, Vincent L., Chief Ranger, George Washington Memorial Parkway, McLean, VA 22101, KENWORTHY, Jason P., Geologic Resources Division, National Park Service, 12795 W. Alameda Parkway, Denver, CO 80225 and MIMS, Alison L., Black Canyon of the Gunnison National Park and Curecanti National Recreation Area, 102 Elk Creek, Gunnison, CO 81230, vincent_santucci@nps.gov, vincent_santucci@nps.gov

PAVLIS, Terry, Geological Sciences, University of Texas at El Paso, 500 W. University Ave, El Paso, TX 79968, PAVLIS, Gary L., Department of Geological Sciences, Indiana University, Bloomington, IN 47405, ENKELMANN, Eva, Geology, Lehigh University, 31 Williams Dr, Bethlehem, PA 18015, GULICK, Sean S.P., Institute for Geophysics, University of Texas at Austin, J.J. Pickle Research Campus (ROC), 10100 Burnet Rd. (R2200), Austin, TX 78758-4445, KOONS, Peter, Department of Earth Sciences, University of Maine, 5790 Bryand Global Sciences, Orono, ME 04469 and STEEP, Research Group, U.Utah,U.Wash,U.Alaska,VirgTech,+above, nine institutions, 00000, tlpavlis@utep.edu, tlpavlis@utep.edu

URBANCZYK, Kevin, Earth & Physical Science, Sul Ross State University, Box C-139, Alpine, TX 79832, BENNETT, Jeffery, Rio Grande Wild and Scenic River, National Park Service, BBNP-ScRM, 266 Tecolote Drive, Big Bend National Park, TX 79834, BRAUCH, Billie, Rio Grande Wild and Scenic River, National Park Service, BBNP-ScRM, 1 Mesquite Road, Big Bend National Park, TX 79834, DYESS, Jonathan, Department of Geological Sciences, University of Minnesota Duluth, 1114 Kirby Dr, 229 Heller Hall, Duluth, MN 55812 and SCHWARTZ, Benjamin, Department of Biology, Texas State University- San Marcos, 206 FAB, Freeman Aquatic Station, 601 University Drive, San Marcos, TX 78666, kevinu@sulross.edu, kevinu@sulross.edu

MORGAN, Lisa A., U.S. Geological Survey, PO Box 25046, MS 966, Denver, CO 80225 and SHANKS, W.C. Pat, U.S. Geological Survey, 973 Federal Center, Denver, CO 80225, lmorgan@usgs.gov, lmorgan@usgs.gov

HUDSON, Mark R.¹, TURNER, Kenzie J.² and TREXLER, Charles C.², (1)U.S. Geological Survey, Box 25046, MS 980, Denver, CO 80225, (2)U.S. Geol Survey, Denver Federal Center, Denver, CO 80225, mhudson@usgs.gov, mhudson@usgs.gov