Session No. 105 Monday, October 28, 2002

1:30 PM-5:30 PM, Colorado Convention Center: C209
T71. Feedback in Earth Systems: Determining System Response to Perturbation Through Observations and Modeling
J. Alcock and Lee Kump, Presiding
 Paper #Start Time
105-11:30 PM CYANOBACTERIAL EMERGENCE AT 2.8 GYA AND GREENHOUSE FEEDBACKS: SCHWARTZMAN, David W., Biology, Howard Univ, Washington, DC 20059, dws@scs.howard.edu and CALDEIRA, Ken, Climate and Carbon Cycle Group, Lawrence Livermore National Lab, 7000 East Ave., L-103, Livermore, CA 94550
105-21:50 PM RESERVOIR SIZE, RESIDENCE TIME, AND THE RATE OF ISOTOPIC CHANGE: EXAMINING THE BEHAVIOR OF MESOPROTEROZOIC MARINE SULFATE: KAH, L.C., Department of Geological Sciences, Univ of Tennessee, Knoxville, TN 37996, lckah@utk.edu, LYONS, T.W., Department of Geological Sciences, Univ of Missouri, Columbia, MO 65211, and FRANK, T.D., Department of Geosciences, Univ of Nebraska, Lincoln, NE 68588
105-32:05 PM MA\XIMUM AND MINIMUM OBLIQUITY CYCLES IN THE LATE CARBONIFEROUS ROCKY MOUNTAINS: SMITH, Linda S.S.1, OTTO-BLIESNER, Bette L.2, SHIELDS, Christine2, BRADLEY, Ester2, and AMMON, Casper2, (1) Fulbright Lecturer/Researcher, Katmandu, Nepal, smithlss@mos.com.np, (2) UCAR, Boulder, CO
105-42:20 PM FEEDBACK AND PHANEROZOIC ATMOSPHERIC CO2 AND O2: BERNER, Robert A., Geology and Geophysics, Yale Univ, 210 Whitney Ave, New Haven, CT 06520-8109, robert.berner@yale.edu.
105-52:40 PM BURNING EXPERIMENTS AND LATE PALEOZOIC HIGH O2 LEVELS: WILDMAN, Richard A. Jr1, ROBINSON, Jennifer M.2, ESSENHIGH, Robert H.3, HICKEY, Leo1, and BERNER, Robert A.1, (1) Geology and Geophysics, Yale Univ, P.O. Box 208109, New Haven, CT 06520-8109, richard.wildman@yale.edu, (2) Environmental Science, Murdoch Univ, South Street, Murdoch, 6150, Australia, (3) Mechanical Engineering, Ohio State Univ, 206 West 18th Avenue, Columbus, OH 43210
105-62:55 PM A LATE CRETACEOUS CHRONOLOGY OF LARGE, RAPID SEA-LEVEL CHANGES: GLACIOEUSTASY DURING THE GREENHOUSE WORLD: MILLER, Kenneth G.1, SUGARMAN, Peter2, BROWNING, James V.1, KOMINZ, Michelle A.3, HERNANDEZ, John C.1, OLSSON, Richard K.1, KATZ, Miriam E.1, and WRIGHT, James D.1, (1) Department of Geological Sciences, Rutgers, The State University of New Jersey, 610 Taylor Rd, Piscataway, NJ 08854-8066, kgm@rci.rutgers.edu, (2) New Jersey Geol Survey, PO Box 427, Trenton, NJ 08625, (3) Western Michigan Univ, 1187 Rood Hall, Kalamazoo, MI 49008-3805
105-73:10 PM SEAWATER STRONTIUM/CALCIUM RATIO INDICATES PLATE TECTONIC CONTROL ON THE EVOLUTION OF CARBONATE SEDIMENTATION: STEUBER, Thomas, Institute of Geology, Mineralogy and Geophysics, Ruhr Univ, Universitaetsstrasse 150, Bochum 44801 Germany, thomas.steuber@ruhr-uni-bochum.de.
 3:25 PM Break
105-83:40 PM CARBON ISOTOPE EXCURSIONS: FLUXES, FEEDBACKS AND FALLACIES: ARTHUR, Michael A. and KUMP, Lee R., Penn State Astrobiology Research Center and Department of Geosciences, Pennsylvania State Univ, University Park, PA 16802, arthur@geosc.psu.edu
105-93:55 PM FEEDBACK MECHANISMS IN THERMALLY ACTIVE MEDIUM DUE TO THE PRESENCE OF GRAVITY AND ATOMIC FORCES LEAD TO SELF-ORGANIZATION IN WEATHERING PROCESSES AS SEEN IN THE PIKES PEAK GRANITE, COLORADO: BLAIR, Robert W. Jr, Mountain Studies Institute, P.O. Box 426, Silverton, CO 81433, blair_r@fortlewis.edu.
105-104:10 PM DOWNSTREAM ADJUSTMENT OF CHANNEL WIDTH TO SPATIAL GRADIENTS IN RATES OF ROCK UPLIFT AT NAMCHE BARWA: MONTGOMERY, David R.1, FINNEGAN, Noah1, ANDERS, Alison1, and HALLET, Bernard2, (1) Earth & Space Sciences, Univ of Washington, PO Box 351310, Seattle, WA 98195-1310, dave@geology.washington.edu, (2) Quaternary Research Center, Univ of Washington, 19 Johnson Hall, University of Washington Box 351360, Seattle, WA 98195
105-114:30 PM VARIATION IN AQUIFER HYDRAULIC GRADIENT RELATED TO NEAR-DECADAL CLIMATE CHANGES: ROHE, Michael J.1, SMITH, Richard P.2, and MCLING, Travis2, (1) Applied Geosciences Department, Idaho National Engineering and Environmental Lab, P.O. Box 1625, Mail Stop 2107, Idaho Falls, ID 83415-2107, mil@inel.gov, (2) Geosciences Research Department, Idaho National Engineering and Environmental Lab, P.O. Box 1625, Mail Stop 2107, Idaho Falls, ID 83415-2107
105-124:45 PM POSITIVE FEEDBACK AT THE MINERAL-MICROBE-WATER INTERFACE: A FEW EXAMPLES: BRANTLEY, Susan L., LIERMANN, Laura, and SCHAPERDOTH, Irene, Geosciences, Penn State, Univ Pk, PA 16802, brantley@geosc.psu.edu
105-135:05 PM MULTIPLE STEADY STATES CREATED BY POSITIVE FEEDBACK AND THEIR EFFECTS ON SYSTEM RESPONSE TO PERTURBATION: ALCOCK, J., Environmental Sciences, Penn State Abington College, 1600 Woodland Rd, Abington, PA 19001, jea4@psu.edu.

Back to the 2002 Denver Annual Meeting (October 27-30, 2002)