2007 GSA Denver Annual Meeting (28–31 October 2007)

Session No. 126
Tuesday, 30 October 2007: 8:00 AM-12:00 PM

T15. Perspectives in Redox Geochemistry and Microbial Processes

 

Annette Summers Engel and Jennifer A. Roberts, Advocates
Paper #
Start Time
 
8:00 AM
Introductory Remarks
1
8:05 AM
ELECTROCHEMICAL DETERMINATIONS OF KEY REDOX SPECIES ASSOCIATED WITH MICROBIAL ACTIVITY
DRUSCHEL, Gregory K.1, ODURO, Harry1, EASTMAN, Danielle1, SMITH, Lydia1, BOYD, Eric2, MACALADY, Jennifer L.3 and GAMMONS, Christopher H.4, (1)Department of Geology, Univ of Vermont, Burlington, VT 05405, (2)Thermal Biology Institute, Montana State University, Bozeman, MT 59717, (3)Geosciences, Pennsylvania State University, University Park, PA 16802, (4)Geological Engineering, Montana Tech of The Univ of Montana, 1300 West Park Street, Butte, MT 59701, gdrusche@uvm.edu, gdrusche@uvm.edu
2
8:20 AM
COMBINED ISOTOPIC AND MOLECULAR EVIDENCE FOR DEVELOPMENT OF HIGHLY HETEROGENEOUS ZONES OF MICROBIAL ACTIVITY IN A GROUNDWATER UNDERGOING ENHANCED BIOREMEDIATION
CONRAD, Mark E.1, BRODIE, Eoin L.2, BILL, Markus1 and COLWELL, Frederick S.3, (1)Earth Sciences Division, Lawrence Berkeley National Laboratory, Mailstop 70A-4418, Berkeley, CA 94720, (2)Earth Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, (3)104 CEOAS Admin Bldg, Oregon State University, Corvallis, OR 97331-5503, MSConrad@lbl.gov, MSConrad@lbl.gov
3
8:35 AM
IMPROVED APPROACH TO CHARACTERIZE CHANGING KINETIC CONTROLS ON COMMON REDOX REACTIONS USING IN SITU PUSH-PULL TESTS
MCGUIRE, Jennifer, Geology, University of St. Thomas, 2115 Summit Ave, St. Paul, MN 55105-1080, PHANIKUMAR, Mantha, Department of Civil & Environmental Engineering, Michigan State Univ, East Lansing, MI 48824-1115 and KNEESHAW, Tara, Geology & Geophysics, Texas A&M University, 3115 TAMU, College Station, TX 77843-3115, jtmcguire@stthomas.edu, jtmcguire@stthomas.edu
4
8:50 AM
DETERMINATION OF HYDROLOGICAL CONTROLS ON BIOGEOCHEMICAL PROCESSES AT A WETLAND-AQUIFER INTERFACE USING MULTIVARIATE STATISTICS
BAEZ CAZULL, Susan1, MCGUIRE, Jennifer2, COZZARELLI, Isabelle3 and VOYTEK, Mary3, (1)Geology & Geophysics, Texas A&M University, 3115 TAMU, College Station, TX 77843-3115, (2)Geology, University of St. Thomas, 2115 Summit Ave, St. Paul, MN 55105-1080, (3)U.S. Geol Survey, 12201 Sunrise Valley Dr, Reston, VA 20192, cazull@gmail.com, cazull@gmail.com
5
9:05 AM
MODELING REDOX DISEQUILIBRIUM AND BIOGEOCHEMICAL BEHAVIOR OF METALS IN LAKE SEDIMENTS
SENGOR, S. Sevinc1, SPYCHER, Nicolas2, GINN, Tim R.3, GIKAS, Petros4, BARUA, Sutapa5, PEYTON, Brent5 and SANI, Rajesh6, (1)Civil & Environmental Engineering, Southern Methodist University, 1 Shields Avenue, Davis, CA 95616, (2)Earth Sciences Division, Lawrence Berkeley Laboratory, MS 90-1116, 1 Cyclotron Road, Berkeley, CA 94720, (3)Civil and Environmental Engineering, UC Davis, 1 Shields Avenue, Davis, CA 95616, (4)Civil & Environmental Engineering, UC Davis, 1 Shields Avenue, Davis, CA 95616, (5)Chemical and Biological Engineering, Montana State University, 306 Cobleigh Hall, Bozeman, MT 59717-3920, (6)Chemical and Biological Engineering, South Dakota School of Mines and Technology, 501 East St. Joseph Street, Rapid City, SD 57701-3995, ssengor@lyle.smu.edu, ssengor@lyle.smu.edu
6
9:20 AM
Withdrawn
7
9:35 AM
METHANOBACTIN-PROMOTED DISSOLUTION OF CU-SUBSTITUTED BOROSILICATE GLASS
KULCZYCKI, Ezra1, FOWLE, David1, KNAPP, Charles2, GRAHAM, David W.2 and ROBERTS, Jennifer A.3, (1)Geology, University of Kansas, Multidisciplinary Research Building, 2030 Becker Dr, Lawrence, KS 66047, (2)Civil Engineering and Geoscience, Newcastle University, Newcastle upon Tyne, NE1 7RU, United Kingdom, (3)Geology, University of Kansas, 1475 Jayhawk Blvd, Lindley Hall, Room 120, Lawrence, KS 66047, jenrob@ku.edu, jenrob@ku.edu
 
9:50 AM
Break
8
10:00 AM
INFLUENCE OF SPARTINA ALTERNIFLORA AND JUNCUS ROEMARIANUS ON SALTMARSH SEDIMENT PORE WATER AND SOLID PHASE GEOCHEMISTRY
KORETSKY, Carla M., GEOSCIENCES, WESTERN MICHIGAN UNIVERSITY, 1187 Rood Hall, 1903 West Michigan Ave, Kalamazoo, MI 49008, carla.koretsky@wmich.edu, carla.koretsky@wmich.edu
9
10:15 AM
SEPARATING THE HYDROLOGICAL AND BIOLOGICAL CONTROLS ON DENITRIFICATION IN THE STREAMBED OF A LOW-RELIEF COASTAL CATCHMENT
FLEWELLING, Samuel A.1, HERMAN, Janet S.2, HORNBERGER, George M.3 and MILLS, Aaron L.2, (1)Environmental Sciences, University of Virginia, PO BOX 400123, Charlottesville, VA 22904, (2)Department of Environmental Sciences, University of Virginia, P.O. Box 400123, Charlottesville, VA 22904, (3)Dept. of Civil and Environmental Engineering, Vanderbilt University, Nashville, TN 37240, saf5f@virginia.edu, saf5f@virginia.edu
10
10:30 AM
KINETIC CONTROLS ON SULFATE REDUCTION DESCRIBED USING IN SITU TECHNIQUES IN A WETLAND-AQUIFER SYSTEM
KNEESHAW, Tara1, MCGUIRE, Jennifer2, SMITH, Erik3, COZZARELLI, Isabelle4 and VOYTEK, Mary4, (1)Geology & Geophysics, Texas A&M University, 3115 TAMU, College Station, TX 77843-3115, (2)Geology, University of St. Thomas, 2115 Summit Ave, St. Paul, MN 55105-1080, (3)Department of Geology, 2115 Summit Ave, ST. Paul, MN 55105, (4)U.S. Geol Survey, 12201 Sunrise Valley Dr, Reston, VA 20192, tkneeshaw@geo.tamu.edu, tkneeshaw@geo.tamu.edu
11
10:45 AM
BIOGEOCHEMISTRY OF IRON OXIDATION IN A CIRCUMNEUTRAL FRESHWATER HABITAT
DUCKWORTH, Owen, Soil Science, North Carolina State University, Raleigh, NC 27695, HOLMSTRÖM, Sara, Natural and Environmental Sciences, Mid Sweden University, Sundsvall, SE-851 70, Sweden, PENA, Jasquelin, Department of Civil and Environmental Engineering, University of California-Berkeley, 140 Mulford Maill 3114, Berkeley, CA 94720, ZACHARIAS, Elizabeth, Integrative Biology, University of California-Berkeley, Berkeley, CA 94720 and SPOSITO, Garrison, Ecosystem Sciences, University of California, Mulford Hall MC 3114, Berkeley, CA 94720, owen_duckworth@ncsu.edu, owen_duckworth@ncsu.edu
12
11:00 AM
BIOLOGICAL AND GEOCHEMICAL INFLUENCES ON ARSENIC REDOX PROCESSES IN A GEOTHERMAL ENVIRONMENT
CHILDERS, Susan E., Geological Sciences, Univ of Idaho, 7th and Line, PO 443022, Moscow, ID 83844-3022, childers@uidaho.edu, childers@uidaho.edu
13
11:15 AM
EXOPOLYMERIC SUBSTANCES IN HYPERSALINE MICROBIAL MATS: THEIR POTENTIAL ROLE IN CALCIUM CARBONATE MINERALS PRECIPITATION
BRAISSANT, Olivier1, DUPRAZ, Christophe1, DECHO, Alan W.2, GLUNK, Christina3, PRZEKOP, Kristen M.1 and VISSCHER, Pieter T.4, (1)Marine Sciences/Geosciences, University of Connecticut, 1080 Shennecossett Road, Groton, CT 06340, (2)Arnold School of Public Health, University of South Carolina, 800 Sumter St. - SC-29208 Columbia, Columbia, SC SC-29208, (3)Institute of Geology and Hydrogeology, University of Neuchâtel, Rue Emile Argand 158, CH-2009 Neuchâtel - Switzerland, Neuchâtel, CH-2000, (4)Dept. Marine Sciences, Univ of Connecticut, 1084 Shennecossett Road, Groton, CT 06340, olivier.braissant@uconn.edu, olivier.braissant@uconn.edu
14
11:30 AM
CARBON AND SULFUR CYCLING IN CRETACEOUS COLD SEEPS RECORDED IN THE PARAGENESIS AND GEOCHEMISTRY OF DIAGENETIC CARBONATES
LYONS, Timothy W.1, SHAPIRO, Russell2, GILL, Benjamin1, BATES, Steve1, ANDERSON, Julia3, GILHOOLY, William1 and PARSONS-HUBBARD, Karla4, (1)Dept. of Earth Sciences, University of California, Riverside, CA 92521, (2)Geological and Environmental Sciences, California State University, Chico, Box 205, Chico, CA 95929-0205, (3)Dept. of Geosciences, Idaho State University, Pocatello, ID 83209, (4)Geology Dept, Oberlin College, Oberlin, OH 44074, timothyl@ucr.edu, timothyl@ucr.edu
15
11:45 AM
EVALUATING THE NATURE OF THE RISE OF ATMOSPHERIC OXYGEN USING LEAD ISOTOPE COMPOSITIONS FROM PALEOPROTEROZOIC SHALE SUITES
POLLACK, Gerald D.1, KROGSTAD, Eirik J.1 and BEKKER, Andrey2, (1)Geosciences, Georgia State University, 24 Peachtree Center Avenue SE, Atlanta, GA 30303, (2)Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Rd., N.W, Washington, DC 20015-1305, gpollack1@student.gsu.edu, gpollack1@student.gsu.edu
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